Polymer binder for composite reinforcement. RU patent 2495892.
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Composition to reinforce building structures / 2493337 Composition comprises glass or basalt roving in amount of 90-100 wt parts, impregnated with polymer binder based on epoxide-diane resin in the amount of 18÷20 wt parts. The polymer binder additionally contains a magnetic-susceptible metal-containing carbon nanostructure in the amount of 0.001÷1.5 wt parts. |
 Composite reinforcement / 2482248Invention relates to non-metal composite reinforcement, which is applied for reinforcement of monolithic and precast concrete structures, as joints between layers in multi-layer wall structures, for reinforcement of masonries from bricks and blocks, for reinforcement of concrete floors, for reinforcement and strengthening of soil beds for roads and highways. Composite reinforcement according to the version No. 1, comprises a polymer matrix and evenly arranged reinforcing longitudinal threads (bundles of threads) of low-module and high-module fibres. At the same time the ratio of polymer matrix area to area of thread bundles shall be at least 2. The polymer matrix is made of a thermoplastic structural polymer, which is dispersely reinforced with cut glass, basalt or carbon fibre with length of 0.5-5 mm with weight content of up to 30%. Reinforcing threads from low-module and high-module fibres are arranged evenly along cross section of reinforcement. Low-module fibres are threads or rovings from glass fibre and basalt fibre, and high-module ones are carbon and aramid threads. Application of thermoplastic structural polymers as binders makes it possible during local heating of the rod to make a bend at the necessary angle without reduction of composite strength in the area of the bend. For necessary adhesion with concrete on the rod surface there are ribs made by means of moulding in process of rod manufacturing. According to the version No. 2 the composite reinforcement of the clause No. 1 is additionally coated with a fire-resistant layer made of solid sodium glass, mixed with glass microspheres and/or thermally expanded graphite. |
 Method to manufacture non-metal reinforcement element with periodic surface and reinforcement element with periodic surface / 2482247Method to manufacture a reinforcement element with periodic surface includes placement of cords made of lengthy mineral fibres with thickness of 5-50 mcm and/or threads from them, in the form of a tape with density in the cord section equal to 2-20 K tex, they are arranged in longitudinal direction and twisted into a rope by single or double twisting. The reinforcement element is made in the form of a rope of tape cords. Cords are made of fibres with thickness of 5-50 mcm and/or threads from them, in the form of a tape with density in the cord section equal to 2-20 K tex, and tensile strength of 0.6-2.0 GPa. The area of rope section is not more than 1.2 nA, where n - number of cords, A - area of section of one cord. The rope may be twisted from cords impregnated with a polymer binder, or the twisted rope is impregnated with a cement or polymer binder, at the same time the area of twisted rope section shall not exceed the total area of cords by more than 20%. |
 Set of reinforcement for concrete and marks / 2469159Invention relates to a set of fibres for concrete with RF identification marks or any other type of marks, which may provide information "I am here", and to concrete or concrete structure comprising fibres with RF identification marks, for reinforcement or any other purposes. The invention also relates to the method for determination of type and quantity of fibres for production of fibre-reinforced concrete and to the method for determination of a type, content and/or distribution of fibres inside fibre-reinforced concrete with the help of RF identification marks. |
 Process line for manufacture of composite reinforcement / 2468161In a process line each creel bobbin has its tension device. Plate heating elements are installed in a heating unit. An impregnation device comprises a drum installed so that is part is in an impregnation bath, and a part is above the impregnation bath. From a roving stretching through the drum, excessive binder and foam are removed with a fairing. A winding device comprises a controller, connected with a bobbin drive, a faceplate drive and a photocell joined with a leash. A polymerisation unit comprises two sections of a thermal oil chamber, each section is arranged from connecting parts with oil heating elements. A pulling device is arranged of caterpillar type. A cutting tool in a cutting device is an abrasive wheel. |
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Composite reinforcing article / 2461588 Article has a bearing rod and a reinforcing winding made from fibre filler saturated with polymer binder. The polymer binder contains the following (wt %): epoxy resin 8-14, isomethyl tetrahydrophthalic anhydride 8-14, polymerisation accelerator 0.4-1.0 and a modifying additive - aromatic conjugated hydroxyphenylene 1.8-3.0. The fibre filler is made from mineral carbon fibre. |
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Method of making reinforcement elements / 2458215 Method to manufacture a reinforcement element for disperse reinforcement is carried out so that prior to cutting a thread-like material is twisted while a spindle rotates at 50 rpm, and drawing speed is 300 m/hr, coated with a polymer binder, and the polymer binder is hardened. Moreover, thread-like materials may be mineral or synthetic threads. Thread-like materials may have different geometric dimensions and strength properties. |
 Reinforcement element for prestressed concrete structures / 2455436Reinforcement element for prestressed concrete structures comprising a roving from continuous mineral fibres is arranged in the form of longitudinal lengthy basalt and/or carbon fibres assembled into a tape cord with thickness of not more than 2 mm while fibres have thickness of 5-50 mcm, or threads from them, with fibre density in the cord section equal to 2-10 K tex and tensile strength of 0.6-4.0 GPa. |
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Method to manufacture basalt reinforcement with die-rolled section / 2455435 Method includes the following: generation of a roving from fibres pulled from feeder dies, making a bundle from several rovings (number of rovings is determined by the required diameter of the reinforcement), which stretches via a disc (die) with a calibrated hole giving it a cylindrical shape), a basalt roving is wound onto a bundle (previously soaked in a resin with its subsequent polymerisation) helically with a sol-gel applied on it from metal oxides with thickness of 20-100 nm (aluminium, zirconium, titanium oxide). The roving is pulled via a bath with a sol-gel from metal oxides, which has length of 0.5-1.0 m. The speed of roving pulling via a bath with a sol-gel from metal oxides makes 20-40 m/s. |
 Composite reinforcement / 2436910Composite reinforcement includes load-carrying rod that is laminated and includes inner core and next layers; at that, layers have spiral winding; direction of windings on various layers can be various. Spiral windings can be single- or multi-turn. Outer layer of load-carrying rod or its part can be of other colour. External part of load-carrying rod can be provided with addition of fire retarders. |
 Nano-modified binder, method for production thereof and prepreg based thereon / 2489460Invention includes, pts.wt: bisphenol A based epoxy resin 60-80, polyepoxy novolac resin 20-40, nanodiamond mixture 0.025-0.1 and a hardener 80-110. The method of producing the binder involves preparing a suspension of the diamond mixture in a portion of the hardener; preparing a mixture of polyepoxy novolac resin, bisphenol A based epoxy resin and the remaining hardener and then adding the obtained mixture to said suspension. Also disclosed is a prepreg which is prepared from the binder. |
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Epoxide composition for making articles from polymer composite materials by vacuum infusion / 2488612 Invention relates to cold curing epoxide compositions and can be used in making structures, including large-sized structures, from polymer composite materials by vacuum infusion in engineering fields. The epoxide composition includes an epoxide base containing epoxy-diane resin, an active diluent and a curing system based on an amine curing agent and a surfactant, characterised by that the epoxy-diane resin used is a resin or a mixture of resins with molecular weight 340-430, the active diluent used has viscosity of up to 0.1 Pa·s, the amine curing agent is a mixture of a curing agent basedd on an aromatic amine and a cold curing catalyst, and the curing system further includes a heterocyclic imidazole-type compound and a nanomodifier. The technical result is preparation of a high-technology epoxy composition, curable without the need for additional heat and without a large exothermic effect, and characterised by improved physical and mechanical properties. |
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Cold curing epoxide composition / 2479601 Epoxide composition can be used as a saturating composition and an adhesive composition and for protective coatings of metal and concrete surfaces. The cold curing epoxide composition contains an epoxide base which includes an epoxy-diane resin having molecular weight of 340-540, an epoxy-urethane resin and a curing system which contains an aromatic amine and an imidazole-type heterocyclic compound. |
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Polymer composition / 2478672 Invention relates to polymer compositions based on epoxy resins and latent curing agents and can be used as epoxy filling compounds, binding materials for fibre-glass, adhesives, coatings and other purposes. The epoxy component used is a mixture of aromatic and aliphatic epoxy resins in ratio of 96:4 to 20:80. The latent curing agent used is polyisocyanate - a mixture of isomers 4,4'-2,2' and 4,2'-diphenyl methane diisocyanate and their homologues of tri- and tetraisocyanates, whose aromatic rings are bound by methylene bridges. The methylene bridges are blocked by a mixture which consists of ε-caprolactam (A), methylpyrazole (B) and benzyl alcohol (C) in ratio A:B:C from 90:9:1 to 10:80:10. Blocking is carried out by stirring the molten reaction mass at temperature of 60-140°C for 40-180 minutes with the ratio of the isocyanate and blocking components ranging from 76:24 to 60:40. The ratio of the epoxy and isocyanate components in the composition is as follows (pts.wt): mixture of epoxy resins - 100, curing agent - 10-50. |
 Benzoxazine siloxanes and heat-curable composition based thereon with epoxy resin / 2475507Invention relates to novel benzoxazine siloxanes of general formula , where R1 denotes trimethylsilyl, dimethylsilylpropyl-8-methoxy-N-R2-1,3-benzoxazine, pentamethylsiloxypropyl- N-1,3-benzoxazine; R2 denotes alkyl C1-C4, hydroxyethyl, phenyl; X denotes oxygen, methylene, isopropyl, hexafluoropropyl; m=0-8, n=0-32; at certain conditions, values of X, R1 and number links in benzoxazine siloxanes. Heat-curable compositions for heat-resistant adhesives, filling compounds and coatings are obtained from the benzoxazine siloxanes and epoxy resins. The composition contains (pts.wt) one or seven benzoxazine siloxane compounds in amount of 10-50; epoxy-diane or epoxy-phenol-formaldehyde resin in amount of 100-50; a curing agent - isomethyl tetrahydrophthalic anhydride in amount of 0-83; filler - boron or aluminium nitrides in amount of 0-15. |
 Epoxide compound / 2472820Invention is meant for gluing, sealing and repairing materials and articles for medical and household purposes, and materials used in closed and sealed premises. The epoxide compound contains the following (pts.wt): epoxy diane resin - 100, plasticiser - 1.5-20, curing agent - 10-100 and nanostructured bentonite powder which is intercalated with cerium ions (Ce3+) - 0.5-5. |
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Polymer composition / 2471830 Composition contains the following (pts.wt): epoxide oligomer 29-35, oligoamidoamide 4-7, hollow glass microspheres 25-33, ammonium phosphate 15-21.5, aliphatic amine 8-12, catalyst 0.5-1, rubber 3-6 and powdered filler 2.5-3.5. |
 Composition for forming threads and fibreglass tube having threads made using said composition / 2460746Invention relates to high-strength compositions which can be used in making articles from reinforced plastic, having surfaces which are exposed to intense wearing during operation, for example, when forming threaded joints of fibreglass tubes. The composition contains the following (pts.wt): epoxy binder (epoxy resin combined with a curing agent) 100, graphite 0-25.0, wollastonite 10.0-200.0 of the content of epoxy resin with graphite. |
 Polymer composition / 2458086Composition contains the following (pts.wt): epoxy resin ED-20 - 20-30; epoxy resin DEG-1 21-28; polyether - 12-20; filler - 17-25; hardener - stabilised liquid mixture of aliphatic and aromatic amines - 15-20; curing accelerator - either resorcin or hydroquinone or pyrocatechol 3-5, plasticiser - either a polyether based on diethylene glycol, butyl alcohol and maleic anhydride, or a polyether based on adipic acid, diethylene glycol and butyl alcohol. |
 Epoxy composite material / 2455323Invention relates to epoxy composite materials which can be used as coatings and binding materials. The epoxy composition consists of expoxy resin based on bis-phenol F, a polyanhydride type hardener and fullerene filler. The filler is either pure fullerene C60 or a mixture fullerenes C60/C70, with the following ratio of components, wt %: fullerene C60 or mixture of fullerenes C60/C70 0.01-5-0.1; epoxy composition - the balance up to 100. |
 Oil-filled rubber compositions / 2494124Invention relates to rubber compositions. The composition contains diene-based rubber and one polyether or polyglycol ether based on cycloaliphatic epoxide. The composition can contain filler and a vulcanising agent. Another version of the composition contains diene-based rubber and one polyether or polyglycol ether based on cycloaliphatic epoxide and one filling oil. The filling oil is selected from a group consisting of aromatic oil, aliphatic oil, naphthene oil and mixtures thereof. |
FIELD: chemistry.
SUBSTANCE: invention relates to epoxy binder for composite plastic and can be used in production of reinforcement with a composite periodic profile. The binder contains the following (pts. wt): epoxy-diane resin with weight ratio of epoxy groups of 20.0-24.0 - 100, aromatically conjugated hydroxy phenylene, combined with isomethyl tetrahydrophthalic anhydride in ratio of 9:1 - 85-90, diglycidyl ether of oligooxypropylene glycol with weight ratio of epoxy groups of 16-18% - 10-12, amine-type polymerisation accelerator - tridimethyl aminomethyl phenol or 2-methylimidazole or ethyl-2-methylimidazole - 0.3-3.0.
EFFECT: invention enables to obtain an article with high strength, elasticity and chemical resistance.
1 tbl, 3 ex
The invention relates to the epoxy binding for composite plastics - in particular, as a polymeric matrix for one-way glass in combination with of glass, basalt fibers and can be used in the production of composite armature periodic profile used for hardening of concrete with a bunch of asphalt, plaster, polymer and cement, as well as in the form of independent structures and products.
Known rod for the reinforcement of concrete (EN 2220049, publ. 27.12.2003, 32 17/04, 04 5/07), in which the bearing part of the rod and winding of glass fibres impregnated with alternately, binder containing epoxy- resin (base), anhydride - and- - (hardener) and triethanolamine (accelerator) in a ratio of components in the terminal together with winding, mass%: reinforcing filler 60-80; the rest of the binder. After impregnation wire through a bath of liquid binder and coating winding, conduct binder wire through the camera with infrared emitters and through the chamber thermostating during 180-240 C.
Specified rod for the reinforcement of concrete has insufficient: tensile strength - 1090 MPa and elasticity, which is determined by the parameters of its manufacturing and composition of the binder.
It is also known technical solution for a patent for invention (SU 1761903, 04 5/07), where rod made of beam roving and braid fastened with a polymeric binder. Polymeric binder derived from epoxy resin and hardener and accelerator of hardening in a ratio of components in reinforced plastic Mr., mass. parts: - basalt threads 40,5-69,2: epoxy resin ED-20 - 9-10; hardener 6-7; accelerator pack 606/2 - 0,3-0,4. Formed bunch of threads is subjected to heat treatment in the chamber annealing; impregnate binder; cure the binder rod produce when it passes through eight with IR radiators in the mode of stepwise heating and cooling.
The resulting terminal has a tensile strength of 1060 MPa and degree of polymerization of 82.3% that is insufficient quantities for the reinforcement of cement-concrete in an alkaline environment, especially when steaming products and structures.
It is also known technical solution for a patent for utility model (EN 77309, 04 5/07, publ. 20.10.2008 bul. №29)closest to the proposed technical at the decision, according to which (in an independent claim) for the reinforcement of concrete, it contains a suspension rod made of fibrous filler, impregnated polymer binder on the basis of epoxy resin, hardener, accelerator polymerization and winding, characterized in that the bearing rod reinforced at least one additional wiring, twisted at least one thread of fibrous filler, impregnated with polymer binding, and mass fraction of reinforcing wire harnesses not exceed 30% of the total mass of fibrous filler.
Polymeric binder for the closest analogue contains the product of the interaction of epoxy aliphatic resin TEG-1 with rubber with the following component ratio, mass%:
Fiberfill - 49,8-69,13;
Epoxy resin ED-20 - 17,1-27,6;
Hardener ISO- - 13,6-22,1;
Product of the interaction of epoxy aliphatic resin TEG-1 with rubber - 0,12-0,42;
Accelerator - pack 606/2 - 0,05-0,08.
As a fibrous filler use threads of basalt and glass fibers that before impregnation subjected to annealing in a special chamber, impregnate and Cand.
A disadvantage of known utility model for the closest analogue is low mechanical strength temporary resistance to break 1200-1300 MPa and young modulus 55000-71000 MPa. These disadvantages are connected with imperfection of structure of the rebar as on the composition of the polymer matrix and its redistribution and polymerization - structuring of a polymeric matrix in the structure of the valve with the formation of the surface of the polymer film. The negative effect on the properties of rod has also application in system binder anhydride ()who is able to crystallize in the preparation and impregnation and , draining and evaporate at temperatures speed polymerization of more than 200 degrees Celsius.
The technical purpose of the claimed invention is to improve the operational characteristics of composite products on the basis of the proposed polymeric binder.
The technical result consists in increasing the strength, elasticity and chemical resistance of composite reinforcement, made with the use of the proposed polymeric binder.
The technical result is achieved by a polymer binding agents for composite reinforcement, containing epoxy resin, hardener anhydride, accelerator polymerization of amino type, modifier, according to the invention as modifier contains ether , and advanced structuring mated , combined with anhydride in the ratio of 9:1, respectively, with the following component ratio, mass fractions:
- resin with a mass fraction of epoxy groups 20,0-24,0
100- mated , combined with anhydride
85-90- ether with mass fraction epoxy groups 16-18%
10-12accelerator amine type - , or 2,4,6-, or 2-Mei, or ethyl 2-Mei, or 2-Mei, or 4-ethyl 2-Mei
0,3-3,0The technical result is ensured by the fact that the claimed polymer binder contains structuring mated , combined with anhydride (). It was found experimentally that , combined with paired does not evaporate, not leaking and not crystallizes in for a long time after preparation binding and during operation of the composite products on its basis, at the expense of increase of operational characteristics of composite reinforcement on the basis of the proposed polymeric binder. When used in the basis of bending resin with a mass fraction of epoxy groups of more than 24.3% of the binder can contain crystals of individual ether that is not technologically; when the content of epoxy groups of less than 20% - viscosity becomes high, that requires heating of binder preparation and impregnation, increases in mass amount of air inclusions, which reduces productivity and indicators of the strength and water resistance of the valve. The number of mixture of paired with in the system of curing within 85-90 mass fractions of selected experimentally time of gelling at 180 C until you reach the desired reactivity. The ratio of the components 1 to 9 in a mixture of paired with established on the basis of the adequacy of arranging the influence of - the self-healing defective zones and chemical resistance, as well as compatibility with defining the absence of crystallization last without heating. component - ether with less than 10 parts by weight content not provide elongation cured binder not less than 4%, with more than 12 parts by weight requires an increase in the number of functional groups agents or accelerator, or modes manufacture, which is not desirable. Accelerators amine curing type picked as all accelerators of this type is empirically. Imidazoles - 2-Mei, ethyl 2-Mei, 4-ethyl 2-Mei - picked within 0.3 to 0.5 parts and or 2,4,6- - 2,0-3,0 when you run valve in the manufacture of prototypes. In private cases, the combined application of accelerators.
Polymeric binder receive as follows:
For the manufacture of bases of a binder in a vacuum reactor download estimated number of epoxy Dianova resins, such as the ED-20, modifier - ether , such as the brand BF-2, cover and include the mixing device. The mixing of components is carried out at a temperature of 60 C for 60 minutes. Then the contents of the reactor cooled naturally. Conduct sampling to determine the following parameters: viscosity, the mass fraction of nonvolatile substances, the content of the epoxy groups, their values are entered in the passport on the batch of resin.
For the manufacture of hardener for a binder in a vacuum reactor download estimated number of arranging paired , such as the brand 3 and anhydride (), cover and include the mixing device. The mixing of components is carried out at a temperature of 20 C for 60 minutes. Then the contents of the reactor defend within 60 minutes. Conduct sampling to determine the following parameters: viscosity, the mass fraction of nonvolatile substances, their values are entered in the passport on the lot hardener.
Then the basis of the binder and hardener in the estimated amount of combine, mix thoroughly, withstand 20-30 minutes to remove air pockets, ready binder is transferred to the production of composite products.
modifier, brand BF-2; production of LLC «microdin» Vladimir;
As arranging agent paired most appropriate to apply oligomer 3.
Oligomer -3 - mated with molecular weight respectively 300 and $ 400 Oligomer -3 represents the products of oxidative condensation of diatomic phenols or their homologues. 3 receive, for example, the condensation of at 240-250 C in the presence of concentrated sulfuric acid for 3-4 hours with distillation 10% of the mass. water.
ether with a mass fraction of epoxy groups of 16-18% in may use the marks BF (TU 2225-065-10488057-2011).
For example, given the following structures of the proposed polymeric binder, mass fractions:
the composition of the binder 1
epoxy resin
- 100 modifier - 11mated ,
combined with
anhydride
- 87,8accelerator polymerization
- 1,2.the composition of the binder 2
epoxy resin
- 100; modifier - 10;mated ,
combined with
anhydride
- 89;accelerator polymerization
- 1,0.the composition of the binder 3
epoxy resin
- 100; modifier - 10,4;mated ,
combined with
anhydride
and 88.8;
accelerator polymerization
- 0,8.Physico-mechanical, chemical and technological parameters of composite reinforcement, made on the basis of the proposed polymer binder in the table.
TableName of indicator
Composite reinforcement is made on the basis of polymeric binder
Composition 1 binder
Composition 2 binder
The 3-binder
1 Physical and mechanical:
1.1 modulus of static bending down fibres, MPa
1100 1200 11501.2 tensile modulus of elasticity
1449 1500 14701.3 Relative elongation before deformation, %
2,2 2,2 2,21.4 Module elasticity at bending, MPa
60000 75000 650001.5 Impact strength across the grain, kJ/m2
340 350 3401.6 Resistance to heating during 24 h, C
200 200 2002 Chemical:
2.1 water Absorption, %
0,2 0,2 0,282.2 (10% sodium hydroxide solution), %
4,96 4,96 5,002.3 Resistance to the action of sulfuric acid, %
0,28 0,2 0,282.4 Resistance to sea water, %
0,6 0,5 0,93 : Technology:
3.1 transport Speed (hardening), m/min
3,8 4,2 4,4According to the data given in the table, we can conclude that the composite reinforcement, produced on the basis of the proposed binder, has high strength, elasticity and chemical resistance.
Thus, the claimed invention allows to raise operating characteristics of our products on the basis of polymeric binder, in particular to increase their strength, elasticity and chemical resistance.
Polymeric binder for composite reinforcement, containing epoxy resin, hardener anhydride, accelerator polymerization of amino type, modifier, wherein as modifier contains ether , and advanced structuring mated , combined with anhydride in the ratio of 9:1 in the following ratio of components, parts by weight:
resin with a mass fraction of epoxy groups 20,0-24,0
100mated , combined with anhydride
85-90ether with a mass fraction of epoxy groups 16-18%
10-12accelerator amine type - or 2-Mei or ethyl 2-Mei
0,3-3,0