Rubber mixture

FIELD: chemistry.

SUBSTANCE: invention relates to a frost-resistant rubber mixture and can be used in motor car and industrial rubber industry to make sealing components used in mobile assemblies of mechanisms operating in low temperature conditions. The rubber mixture contains butadiene-nitrile rubber BNKS-18 AMN, butadiene-nitrile rubber SKN-18 PVC30, thiuram D, naphtham-2, factice, oxanol TS-100, technical carbon P 803, technical carbon T 900, technical carbon 324, zinc oxide, sulphur, stearine, wax ZVP, carboxyl, zincolet VV 222, trichloroethylphosphate.

EFFECT: invention improves technical characteristics of rubber - brittleness temperature range and ultimate elongation.

2 tbl

 

The invention relates to cold-resistant rubber compound and can be used in the automotive and rubber industry, for the manufacture of seals used in the moving parts of mechanisms, operating in conditions of low temperatures.

Known rubber compound containing natural rubber, zinc white, crumb, made from the bark of the cork oak, carbon technical grade P-514, carbon technical grade P-701, sulfur technical, acetonyl R, sulfenamide C, diafana OP, stearin. EN 2386650 IPC C08L 7/00, C08L 79/04, C08K 3/04, C08K 3/06, C08K 3/22, C08K 5/09, C08K 5/18, C08K 5/441, publ. 20.04.2010.

However, the use of oak bark considerably increases the cost of the rubber mixture and the rubber on its base has insufficient resistance to specific environments.

Known rubber compound, which comprises a nitrile butadiene rubber, sulfur, vulcanization accelerator, zinc oxide, carbon black, a plasticizer, an antioxidant and an inorganic filler - slag ferrography camerascamera. Options rubber mixture may include a mixture of butadiene and butadiene-styrene rubber, isoprene rubber, butadiene-styrene and a mixture of isoprene and butadiene rubbers, various plasticizers, additives and reclaim rubber tires. EN 2149165 MPK7 C08L 9/00, C08L 9/02, C08L 9/06, C08K 13/02, C08K 13/02, C08K3:04, C08K 3:06, C08K 3:10, C08K 3:22, C08K 3:36, C08K 5:01, C08K 5:40, C08K 5:44, publ. 20.05.2000.

The disadvantage of this rubber compound is a low temperature limit of fragility.

Known rubber mixture containing profinity butadiene-nitrile rubber in combination with a highly saturated gidrirovanny (degree of hydrogenation of from 93 to 99%) nitrile butadiene rubber containing nitrile of acrylic acid 18% - 0,30 MASC Advanced rubber compound contains sulfur, magnesium oxide, zinc oxide, carbon black P-803, carbon black P-514, dibutylsebacate, Proximo F, deafen OP, acetonyl. EN 2284337 IPC C08L 9/02, C08K 3/22, C08K 3/06, C08K 3/04, publ. 27.09.2006.

The disadvantages of this rubber are low relative elongation and brittle.

Known rubber compound comprising rubber, butadiene-nitrile brand BNX-AM, BNX-ANN, rubber, butadiene-nitrile hydrogenated brand BNCW 4030, grade Turban, sulfur, sulfenamid, altax, stearic acid, rosin, deburocratisation, white carbon, zinc, deafen OP, carbon black P-803, carbon black P-245, modifier RU-D, aramid, or nylon fiber. EN 2309962 IPC C08L 9/02, C08K 13/02, C08K 3/04, C08K 3/06, C08K 3/22, C08K 3/36, C08K 5/0, C08K 5/17, C08K 5/18 C08K 7/02 publ. 10.11.2007.

The disadvantages of this rubber are low relative lengthened the I-brittle transition temperature.

Known zeolite-resistant rubber mixture based on butadiene-nitrile rubber and mineral filler - zeolite, which includes sulfur, zinc oxide, N,N-diphenylguanidine, carbon P. In the rubber mixture is additionally injected polymer composition of ultra-high molecular weight polyethylene with natural zeolite in their mass ratio 10-30:0.5 to 2.0 in the amount of 10.5-of 32.0 parts by weight per 100 parts by weight of rubber. Natural zeolite is subjected to a preliminary mechanical activation. EN 2326903 IPC C08L 9/02, C08L 23/06, C08K 3/36, C08K 3/04, C08K 3/06, C08K 3/22, C08K 5/09, C08K 5/10, C08K 5/18, C08K 5/31 20.06.2008.

However, the mineral filler is injected into the mixture in the form of pre-prepared polymer compositions, which complicates the manufacture of rubber compounds. Also the disadvantage of this rubber compound is low relative elongation.

Closest to the technical essence is a rubber mixture based on butadiene-nitrile rubber containing sulphur, N,N'-diphenylguanidine, di-(2-benzothiazolyl)disulfide, zinc oxide, aldol-α-naphtylamine, N-(4-hydroxyphenyl)naphtylamine-2, N-(1,3-dimethylbutyl)-N'-phenylenediamine-1,4, carbon P with a specific surface area 12-18 m2/g, stearic acid, dibutyl phthalate, molybdenum disulfide, β-Sialon General formula Si6-xAlxOxN8-x. EN 2125068 MPC C08L 9/02, C08K 13/02 C0K 13/02, C08K 3:06, C08K 3:04, C08K 3:22, C08K 3:30, C08K 3:28

However, the known rubber compound has insufficient indicators for temperature limit of fragility and relative elongation at break.

The objective of the invention is to provide a frost-resistant rubber compound with improved technical characteristics, expanding the range of tools for this purpose.

The technical result is an improvement of the technical characteristics, namely temperature limit of fragility and relative elongation at break.

The technical result is achieved by the fact that the rubber mixture containing butadiene-nitrile rubber, sulfur, carbon black, saaristomeri component, zinc oxide and mineral filler according to the invention additionally contains technological additives: thiuram D, naphthas, 2-factis, oxanol CA-100, wax VIZ, Cinquale CENTURIES 222 and plasticizer trichlorethylene, and as nitrile butadiene rubber contains NBR BNKS-18 AMS and NBR SKN-18 PVC 30, as carbon - carbon P-803, technical carbon - T-900, carbon black - T-324; as steeringsteering component - stearin and as a mineral filler - carbosil, with the following ratio of components in mass

The NBR BNKS-18 AMS75,00
The NBR SKN-18 PVC 3025,00
Thiuram D3,00-4,00
Naphthas-22,00-3,00
Factis4,00-5,00
Oxanol CA-1004,00-5,00
Carbon P 80370,00-80,00
Carbon T 90030,00-40,00
Carbon 32410,00-20,00
Zinc oxide3,00-4,00
Sulfur0,3-0,5
Stearin1,00-2,00
Wax VIZ3,00-4,00
Carbosil50,00-60,00
Cinquale CENTURIES 2221.5 to 2.5
Trichloroethylphosphate40,00-5000

The distinction of the proposed solution is a new combination of known components used in various rubber compounds, and their new proportion, which allows to obtain a technical result, expressed in the increase of the temperature limit of fragility and relative elongation at rupture, thereby expanding the range of mixtures for this purpose. The use of different grades of rubber and carbon black cheapen the rubber mixture and make it more sophisticated.

The rubber mixture is produced by mixing the rubber and other components in the mill LB 320/150/150 the modes adopted for the mixture 1352 on THE 38005204-84 based on butadiene-nitrile rubber.

Examples of specific performance (the rubber compositions of the mixtures are given in table 1. Specifications are given in table 2

To obtain a rubber compound used the following materials:

The NBR brand BNKS-18 AMS - TU 38.30313-98; butadiene-nitrile rubber stamps SKN-18 PVC 30 - TU 38.40397-93; thiuram D (tetramethylthiuramdisulphide) - GOST 740-76; naphthas-2 (phenyl-2-naphtylamine) - GOST 39-79; carbon technical - GOST 7885-86; zinc white (zinc oxide) - GOST 202-92; technical sulfur - GOST 127.1-93; stearin - GOST 6484-84; wax VIZ - TU 381011290-90; Oksana CA-100 - TU 6-36-1029-90; factis - TR 81-13-2002; carbosil - TU 57-16-201-10968286-2006; TCHEPH (trichlorethyl the SFAT) - THE 6-06-241-92; Cinquale CENTURIES 222 - firm "Dunlop".

Synthetic nitrile butadiene rubber filled with polyvinyl chloride (PVC) brand SKN-18 PVC-30 (TU 38.103213-2006), obtained by joint coagulation nitrile butadiene latex with a latex of polyvinyl chloride. Briquettes from light yellow to dark brown.

Wax VIZ (TU 381011290-90) - stabilizer of physical activity for rubber General and special purpose. Is a mixture of refined petroleum products - higher hydrocarbons with the addition of paraffin. T melting point of 65°C.

Oxanol CA-100 (TU-6-3 6-1029-90) - surfactant, produced by oksietilirovannye primary alcohols fraction C16-C20received alumoorganic synthesis. CnH2n+2O(CH2CH2O)mH, where n=19÷20, m=100. Appearance: solid white scales. An aqueous solution with a mass fraction of drug 10% is a clear, almost colorless liquid.

Carbosil KS-20. THE 5716-201-10968286-2006, plays songs in a semi-active role filler. Fine black powder. The density of 2.25 to 2.35 g/cm3. The use of filler carbosil increases the ductility of the blends, which allows to reduce the share of plasticizers.

Cinquale CENTURIES 222 is a mixture of high molecular weight aliphatic esters of fatty acids. Application: used in polymer chemistry as those is technological additive, in the processing of polymers. Represents the flakes of white or pale cream color.

Has the following properties, softening temperature of 55+/-5°C; ash - (2 hours at 850°C) - 0,2 Max.%; specific gravity : 0.97 kg/m3.

40,00
Table 1
ComponentsThe compositions of the rubber composition (in wt. parts)
123the placeholder
The NBR BNX-75,0075,0075,00-
ANN
The NBR, SKN-1825,0025,0025,00-
PWHT
The NBR--100,00
the content of the acrylic nitrile
acid 17-23 wt.
Thiuram3,003,504,00-
Sulfur0,300,400,502,45-2,65
Stearin1,001,502,000,8-1,20
Zinc oxide3,003,504,007,40-7,60
Carbon black mark P 80370,0075,0080,00128-132
Carbon black Mar and T 900 30,0035,0040,00-
Carbon black brand 32410,0015,0020,00-
Naphthas-22,002,503,00-
Wax VIZ3,003,504,00-
Oxanol CA-1004,004,505,00-
Factis4,004,505,00-
Carbosil50,0055,0060,00-
Cinquale CENTURIES 2221,52,02,5-
Trichloroethylphosphate45,0050,00-
N,N'-Diphenylguanidine---0,20-0,30
Di(2-benzothiazolyl)disulfide---2,60-2,80
Aldol - naphthalamine---3,80-4,20
N-(4-Hydroxyphenyl)naphtylamine-2---0,90-1,10
N-(1,3-Dimethylbutyl)-N'----0,80-1,20
phenylenediamine-1,4
Dibutyl---18,0-22,0
Molybdenum disulfide---0,50-1,00
Sialon---0,50-2,00
Fluoroplast-4 MB---15,0-30,0

Table 2
The properties of the rubber compoundRubber mixture according to THE 380005204-84StructuresThe placeholder
123
The tensile strength, MPan/m*6,07,27,57,412-13,8
Elongation at break, %n/m 30035035035040-235
Hardness, units of Shor50-60555760-
Temperature limit fragilityn/in**-55-57-58-57-46--55
* - n/m - not less than
** - n/a - not above

From table 1 it follows that the combination of components in the inventive rubber mixture leads to improvement relative elongation at break and thermal limit fragility, which expands the range of mixtures of this assignment.

The rubber mixture containing butadiene-nitrile rubber, sulfur, carbon black, saaristomeri component, zinc oxide and mineral filler, characterized in that it further comprises technological additives: thiuram D, naphthas, 2-factis, oxanol CA-100, wax VIZ, Cinquale CENTURIES 222, and plasticizer - trichlorethylene, and as nitrile butadiene rubber contains NBR BNX-ANN and NBR SKN-18 PVC 30, as carbon - carbon P-803, carbon black - T-900, -the first carbon - T-324, as steeringsteering component - stearin and as a mineral filler - carbosil in the following ratio of components, parts by weight:

trichloroethylphosphate
the NBR BNKS-18 AMS75,0
the NBR SKN-18 PVC 3025,0
thiuram D3,0-4,0
naphthas-22,0-3,0
factis4,0-5,0
oxanol CA-1004,0-5,0
carbon black P-80370,0-80,0
carbon T-90030,0-40,0
carbon T-32410,0-20,0
zinc oxide3,0-4,0
sulfur0,3-0,5
wax VIZ3,0-4,0
carbosil50,0-60,0
Cinquale CENTURIES 2221.5 to 2.5
40,0-50,0



 

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21 cl, 6 tbl, 36 ex

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2 tbl, 5 ex

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FIELD: chemistry.

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4 tbl, 2 ex

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6 cl, 3 dwg, 5 ex

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1 cl, 7 ex, 1 tbl

FIELD: chemistry.

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13 cl, 1 dwg, 19 tbl, 14 ex

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FIELD: chemistry.

SUBSTANCE: rubber mixture contains the following in pts.wt: isoprene rubber 30-70 combined with butadiene rubber 30-70, hydrocarbon resin 0.5-3.0 combined with colophony 0.5-3.0, silane-modified talc 5-20, petroleum oil 4-10. The rubber mixture also contains the following in pts.wt: sulphur 1.2-1.8; zinc oxide 5; stearic acid 1-2; protective wax 2; N-isopropyl-N'-phenyl-n-phenylene diamine 1-2; polymerised 2,2,4-trimethyl-1,2-dihydroquinoline 2; N-cyclohexylthiophthalimide 0.2-0.3; benzoic acid 0.2-0.3; N-cyclohexyl-2-benzthiazolylsulphenamide 0.8-1.2 and technical carbon 40-50.

EFFECT: invention increases dynamic endurance of rubber in conditions where an industrial rubber article operates under pressure.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to acrylic rubber compositions which are used to make industrial rubber products, e.g., rubber hose, sealing articles, rubber vibration insulators etc. The composition contains carboxyl group-containing acrylic rubber, a diazabicycloalkene compound, a polyamine compound and a tertiary amine compound of formula (1), where each of R1, R2 and R3 independently denotes a substitute containing at least one saturated aliphatic hydrocarbon or an unsaturated aliphatic hydrocarbon with a linear structure, a branched structure or a cyclic structure, or a benzyl group. The polyamine compound is an aromatic polyamine of formula (2): H2N-Ph-M-Ph-NH2 (2) where M denotes O, S, SO2, CONH or O-R-O; R in O-R-O is Ph, Ph-Ph, Ph-SO2Ph, (CH2)m, m ranges from 3 to 5, Ph-CH2-C(CX3)2CH2-Pn, where X is H or F, or (CH2)C(CH3)2(CH2); Ph denotes a benzene ring.

EFFECT: good curing parameters and excellent combination of processability, mechanical properties of rubber and compression set of acrylic rubber compositions and curing products thereof.

9 cl, 5 tbl, 18 ex

FIELD: chemistry.

SUBSTANCE: curable rubber mixture contains natural or synthetic rubber, vulcanising substances, vulcanisation accelerators and activators, filler materials and other additives, as well as 0.5-2.0 pts.wt per 100 pts.wt composite antiageing agent rubber consisting of a powdered carrier - colloidal silica and a liquid alloy of antiageing agents obtained at 70-90°C, containing the following in pts.wt: 50-55 N-isopropyl-N-phenyl-n-phenylenediamine, 20-22 ε-caprolactam, 5-6 stearic acid, 20-22 boric acid in form of a melt obtained beforehand in ε-caprolactam at temperature 110-115°C. The alloy and the powdered carrier are in the following ratio in pts.wt: alloy of antiageing agents 55-60, colloidal silica 40-45.

EFFECT: invention increases thermal-oxidative resistance and ageing resistance in high humidity conditions.

6 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: the invention relates to car tires, to tire belt in particular. The tire belt contains a rubber composition based, at least, on a isoprene elastomer, reinforcing material, suturing system and anti-oxidant. The anti-oxidant contains 4,4'- bis(alkylamino)triphenylamine, corresponding to the formula: where R1 and R2 can be identical or different, each of them represents a branched or an unbranched alkyl residue comprising from 1 to 12 carbon atoms, or a cycloalkyl group comprising from 5 to 8 carbon atoms.

EFFECT: increases fatigue resistance and prevents crack formation in the tire belt.

15 cl, 2 dwg, 2 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: rubber mixture contains the following in wt %: BNKS-18AN rubber 34.51-38.48, sulphur 0.9-1.0, sulphenamide T 1.04-1.15, N,N-diphenyl guanidine 0.07-0.12, zinc oxide 1.04-1.15, diaphene FP 0.35-0.36, acetonanyl N 0.69-0.77, colophony 0.69-0.77, stearine 0.35-0.38, ultra-high molecular weight polyethylene modified with 7 wt % natural carbon-containing material - carbosil 5.76-15.50, technical carbon P-803 27.61-30.79, technical carbon P-324 6.9-7.76, dioctyl sebacate 10.35-11.54.

EFFECT: invention improves operational, wear-resistant and frost-resistant characteristics of composite material while simultaneously providing physical and mechanical characteristics and strength properties.

2 tbl

FIELD: chemistry.

SUBSTANCE: rubber mixture based on butadiene-nitrile rubber BNKS-18 is prepared. 2-5 pts.wt synthetic magnesium nano-spinel with particle size less than 100 nm is added to 10 pts.wt powdered ultra-high molecular weight polyethylene per 100 pts.wt rubber and then mixed for 2-3 minutes in a blade mixer. The obtained composition is added to the rubber mixture on rollers or rubber mixer. The rubber mixture also contains natural rubber, sulphur, N,N-diphenylguanidine, di-(2-benzothiazolyl)-disulphide, zinc oxide, aldol-α-naphthylamine, N-(4-hydroxyphenyl)-naphthylamine-2, N-(1,3-dimethylbutyl)-N-phenylenediamine-1,4, technical carbon P803, stearic acid, dibutyl phthalate.

EFFECT: invention enables to obtain rubber with given level of operational properties with high and stable complex of operational characteristics.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention can be used in machine-building to make wear-resistant rod packing and cylinders of hydraulic devices instead of rubber fabric chevron seals, as well as for articles for construction purposes in mining, oil and gas extraction and chemical industry. The rubber mixture based on cis-isoprene rubber SKI-3 - 100 pts.wt contains the following, pts.wt: ultra-high molecular weight polyethylene, modified 7 wt % carbonaceous material carbosil - 170, viscose fibre filler, saturated with latex-resorcinol-formaldehyde composition - banavis - 80, active technical carbon P-234 - 30, petroleum oil - softening agent - netoxol 5, zinc oxide - 5, stearic acid - 1, sulphur - 3, sulfonamide C 1.6, diaphene antiageing agent FP-1, antiozonant-acetonanil N - 1.

EFFECT: articles obtained from the rubber-polymer material have extremely high rigidity, frame structure, resistance to frictional forces, weak acid and alkaline solutions, while partially retaining elasticity, high hardness under intense wear conditions.

1 tbl

Polymer composition // 2482142

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry, particularly to production of rubber mixtures for use in making tyres for light and cargo-carrying cars. The polymer composition contains, wt %: isoprene rubber - 26.98-41.57, synthetic butadiene rubber - 3.10-8.98, non-oil filled butadiene styrene rubber - 12.41-17.97, ethylene-propylene ternary copolymer synthetic rubber - 4.96-6.00, curing agents: zinc oxide - 1.86-3.00, stearic acid - 1.24-1.79, tetramethylthiuram disulphide- 0.0991-0.1482, diphenylguanidine - 0.49-0.93, sulphur - 1.55-1.67, filler: silicic acid - 5.99-15.52, technical carbon N330 - 15.52-23.98, auxiliary ingredients: oil extender - 1.24-3.00, modifier - mixture of C50-C92 fullerenes - 0.0009-0.0018.

EFFECT: invention improves physical and mechanical properties of rubber, resistance to heat and atmospheric factors, frost resistance as well as fatigue strength of vulcanisates during dynamic loading.

1 tbl, 3 ex

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