FIELD: method for production of epoxypolymer solution useful sealing material in building industry.
SUBSTANCE: claimed epoxypolymer solution contains (mass parts): epoxydyanic resin 100; polyethylene polyamine 15; plasticizer 50; filler 200. Waste from epoxide resin production is used as plasticizer, and waste from haydite production is used as filler. Epoxypolymer solution of present invention is useful, for example as sealing and waterproofing material in rebuilding of damaged concrete and reinforced concrete constructions.
EFFECT: epoxypolymer solution with improved operating characteristics and reduced cost.
5 tbl, 8 dwg
The invention is used in construction as the sealing and waterproofing material, as well as the restoration of damaged areas of the concrete elements and concrete structures.
For similar were taken polymeration (RF patent No. 2022943). The composition of the polymer composition including by weight: epoxy resin ED-20 - 100 hardener polyethylenepolyamine (Pepa) - 10...15, filler (waste) - 100...110.
The disadvantages of this material are:
- high cost due to the large consumption of epoxy binder;
the brittleness and low fracture toughness of the cured material.
As the prototype was made of epoxy-phenolic polymeration book Y.A. Sokolov Modified epoxy adhesives and coatings in construction / Wasallowed, E.M. Gottlieb. - M.: stroiizdat, 1990. - S-150). The composition of the epoxy-phenolic polimerrastvora, including mass: epoxy resin ED-20 - 100, phenolic mixture - 100, hardener PEPA - 10, the filler (silica sand ground) - 400.
The disadvantages of this material are:
- content in the composition of complex (substituted) phenol, which is environmentally unsafe, considering the possibility of its selection;
- the need for additional grinding of the filler leads to a rise in the cost of material.
Was the goal of the project to develop otati environmentally safe construction and repair epoxy mortar, with high performance and lower cost.
The composition of the epoxy polimerrastvora includes: a base component (binder), filler, plasticizer and hardener. As a binder used epoxy resin grade ED-20 (GOST 10587-84). Cost reduction was achieved due to the use as component (filler and plasticizer) developed epoxy solution for disposal of industrial productions. As the filler used clay litter - waste production of expanded clay softener - uterine epoxy resin (ITU-I, grade B) - waste production of epoxy resins JSC “Kotovsky LKZ” (Grotowski, Tambov region). Curing was performed using polyethylenepolyamine (PEPA) (TU 2413-357-00203447-99) at room temperature and atmospheric pressure.
ITU-I (STP 6-21-700-1.24-93) is a technology of industrial waste and is a solution of the mixture of resins and products dehydrochlorinating in toluene-butanol or toluene, isolated from the mother liquor from the production of epoxy resins: ED-20, e-40, e-K, e-23. Uterine resin ITU-I must comply with the requirements and standards specified in table 1.
|Table 1 - Regulatory requirements for iziko-chemical indicators of ITU-I|
|No. p.p||Name of indicator||Standards STF 6-21-700-1.24-93|
|Grade a||Brand B|
|1||Appearance||Homogeneous transparent liquid||Homogeneous transparent liquid|
|2||Mass fraction -%||45...50||Not more than 50|
|3||Color R-RA by iodometric scale, mg of iodine is not darker||7||-|
|4||Mass fraction of epoxy groups%||10...15||4...15|
|5||Mass fraction of chlorine ion,%, max||0,0035||-|
|6||Mass fraction of total chlorine,%, no more||0,3||-|
|7||The purity of the resin solution||Loading must be clean, presence of a single x-impurity, not more than 10 per 1 sq DM||-|
|8||Srvc. the viscosity of the resin solution in the viscometer VZ-246 with dia. nozzle 4 mm||13...15||Not more than 100|
|9||the pH of aqueous extract||6...7||-|
Assessing the impact of the degree of filling and plasticization on f is Zico-mechanical properties of epoxy resin ED-20 was carried out according to the results of short-term tests for compression and lateral bending at room (20° C) and elevated (40 and 60°C) temperatures. Calculation of the composition of the composites were performed in parts by weight (including weight) of epoxy resin ED-20, the mass of which was taken as 100. The results of the tests are presented in tables 2, 3 and figure 1...6.
|Table 2 - effect of the number of expanded clay crumbs on the physico-mechanical properties of ED-20|
|Quantity of clay, including mass||Har-ka||20°||40°||60°|
|0||σ,MPa||to 89.9||of 56.4||20,8||14,5||7,9||8,6|
|Table 3 - Effect of plasticizer ITU on the physico-mechanical properties of ED-20|
|Number of ITU, including mass||Har-ka||20°||40°||60°|
|E, MPa||853||-||248||-||of 89.1||-|
|ε,%||5,64||the 4.7||14,5||4,81||12,1||to 5.21|
|ε,%||7,8||equal to 4.97||19,3||5,11||10,8||of 5.29|
Studies have shown that the use of part epoxy composite waste clay as filler allows you to replace the traditional fillers, specially manufactured, without impairing the material (table 2 and figure 1, 2), which significantly reduces its cost.
With the introduction of the plasticizer is to reduce the viscosity of the binder and improve the conditions of the processing composition. However, reduced strength and stiffness of the composite at room and at elevated temperatures tested (table 3 and Fig. 3, 4).
Based on the criterion of minimum cost of polimerrastvora while maintaining high physical-mechanical features, the istics of the boundary conditions was chosen as the content of the plasticizer in the amount of 50 and 100 hours mass ED-20. The introduction of plasticizer over 100 hours weight is impractical due to the significant reduction in the strength characteristics of the composites. The test results presented in table 4 and in Fig. 5...8.
Table 4 - Influence of the number of filler and plasticizer on the mechanical properties of the ED-20
|The composition of the composite, including mass||Har-ka||20°||40°||60°|
|350||σ,MPa||8,3||the 9.7||3,93||4,76||of 2.26||2,66|
|300||σ,MPa||11,1||7,3||5,69||to 4.52||4,13||to 2.57|
|ε,%||3,59||1,26||there is a 10.03||3,15||10,5||5,01|
From the above dependencies (Fig. 5...8) shows that the best set of physical and mechanical properties has a composition containing 50 p.m. by weight of plasticizer ITU and 200 hours on the weight of filler.
The authors propose the following structure of polimerrastvora, including by weight:
epoxy resin ED-20 - 100;
- hardener PEPA - 15;
the plasticizer (uterine epoxy ITU-I) - 50;
- filler (waste clay) - 200±25.
We offer epoxy polymeration has:
- lower cost compared to similar due to its composition of waste production;
satisfactory physical and technical characteristics (table 5);
environmental safety is.
Polymeration, including epoxy Dianova resin, amine curing agent, and a mineral filler and a plasticizer, characterized in that it contains as a mineral filler clay chips - waste production of expanded clay, and as a plasticizer - uterine epoxy - waste production of epoxy resins with the following content of components, including mass:
Epoxy Dianova resin ED-20 100
The polyethylenepolyamine 15
The plasticizer (waste epoxy resins) 50
Filler (waste clay) 200
FIELD: building industry, in particular waterproofing composition useful as waterproofing material to seal corrugation and road crack.
SUBSTANCE: claimed contains (mass parts): epoxy dianic resin 100; polyethylene polyamine 5-1`0; oil residue 10-30; bottoms from aniline production comprising 15-80 mass parts of aniline 5-20; and gravel 300-600. Mass ratio of polyethylene polyamine and bottoms from aniline production is 1:(0.5-4). Oil residue consists from hydrocarbon cuts with boiling point from 2930C to 4700C.
EFFECT: waterproofing composition with increased adhesion to concrete surface.
5 ex, 1 tbl
FIELD: insulation materials.
SUBSTANCE: method of preparing insulation compound, which can be used for impregnating and pouring high- and low-voltage components of electrical and radio equipment, transformers, and throttle valves, comprises mixing at temperature 50-60°C resin having molecular weight 1000-6000 with phosphorus-containing modifier, in particular triglycidyl phosphate or diglycidyl methyl phosphate, or diglycidyl methyl phosphonate, after which is added stoichiometric amount of hardener, in particular 4,4'-diaminodiphenylmethane or 4,4'-diaminodiphenyl sulfone, or 4,4'-diaminodiphenyl oxide.
EFFECT: reduced viscosity of compound, enhanced insulation and electric-strength properties, and simplified preparation procedure.
2 tbl, 17 ex
FIELD: building industry, in particular waterproofing composition.
SUBSTANCE: claimed composition contains (mass parts): epoxy dianic resin 100; polyethylene polyamine 5-10; oil sludge 10-30; still liquor from aniline production containing 15-80 mass parts of aniline 5-20. Mass ratio of polyethylene polyamine and said still liquor is 1:(0.5-4). Oil sludge contains hydrocarbon fractions with boiling point from 2930C to 4700C. Composition of present invention is useful as waterproofing material for plugging of corrugations and road cracks.
EFFECT: waterproofing composition of improved adhesion to concrete surface.
5 ex, 1 tbl
FIELD: corrosion protection.
SUBSTANCE: protective ground paint for painting coiled metal and electrochemical protection of bridges, power lines, and other long term-use metallic structures contains, wt %: epoxide resin 9.0-29.0, polyamide resin 3.0-9.5, pigment 23.0-36.0, zinc nanoparticle preparation 3.0-5.0, filler 13.0-23.2, and solvent - the balance. Zinc nanoparticle preparation is introduced in the form of (0.4-4)x·10-3 M solution in isooctane.
EFFECT: enhanced protective properties.
2 tbl, 4 ex
FIELD: hydraulic insulating materials for hydraulic insulation and corrosion prevention of concrete, metal and reinforced concrete structural surfaces.
SUBSTANCE: claimed composition contains: butadiene-styrene thermoelastomer, diepoxy resin, filler (carbon black), solvent (toluene), pigment filler, containing aluminum and iron hydroxides and additionally indene-coumarone resin, waterproofing agent (liquid polymethylsiloxane), and stabilizer.
EFFECT: composition with high adhesion to concrete and metal surface and improved strength.
FIELD: composite materials.
SUBSTANCE: invention relates to composite materials that can be used as heat-protecting coatings in structures of various-type articles. Coating represents a composite material containing reinforcing filler and binder at their weight ratio 1:(0.4-0.5). The former is made from threads with linear density 52-58 tex based on poly-ε-caproamide fibers coated with continuous layer of tetrafluoroethylene/vinylidene fluoride copolymer filled with carbon black at weight ratio 1:(0.6-0.8). Epoxide binder is composed of, wt parts: 3,3'-dichloro-4.4'-diaminodiphenylmetane tetraglycidyl ether 100, 3,3'-dichloro-4.4'-diaminodiphenylmetane 30-60, 1,2-bis(hydroxymethyl)carborane or tris(dimethyldiaminomethyl)phenol 0.5-2.0.
EFFECT: raised effective enthalpy of coating so providing heat blocking effect and weakening thermal radiation effect owing to reflection and dissipation of emission of supplied convective heat stream when blowing gaseous destruction products into border layer.
6 dwg, 2 tbl, 6 ex
FIELD: military industry, in particular tank artillery.
SUBSTANCE: invention relates to epoxy composition useful as adhesive for fast joining parts from polyamide material. Claimed composition contains (wt %): epoxy diatomaceous resin 64.8-68.4; polyethylene polyamine 9.0-11.0; epoxy aliphatic resin 6.5-8.5; dioctyl phthalate 6.5-8.5; zinc oxide 3.5-5.5; aerosil-380 2.1-3.5.
EFFECT: adhesive composition of improved persistence, wide range of working temperatures and high sorption resistance to nitroethers.
2 tbl, 6 ex
FIELD: recovery of plastics or other constituents of waste materials.
SUBSTANCE: method includes heat processing of used tires and industrial rubber articles in recirculating pyrolysis gases in a reactor at 200-500°C and separating the pyrolysis products in a separation apparatus. The pyrolysis products, C1-C4 hydrocarbons, are fed to the bottom section of the reactor from the separation apparatus. The flue gases outflow from the furnace of the reactor, flow through the heat exchanger mounted inside the reactor in order to heat the recirculating gases and material to be processed, and are fed to the hopper for heating grinded material.
EFFECT: reduced power consumption.
2 cl, 1 dwg, 1 tbl