CN103724729A - Anti-fatigue rubber seal ring - Google Patents

Abstract

The invention discloses an anti-fatigue rubber seal ring. The anti-fatigue rubber seal ring is prepared from the following raw materials by weight: 80-90 parts of acrylonitrile-butadiene rubber, 5-10 parts of rubber smoked sheet, 8-10 parts of neoprene, 1-2 parts of oxidized polyethlene wax, 5-7 parts of thermoplastic styrene-butadiene rubber, 1-2 parts of sulphur, 1.2-2 parts of accelerant TMTD (Tetramethylthiuram Disulfide), 1-2 parts of carbon fiber, 2-4 parts of calcium stearate, 1.2-2.5 parts of dimethyl trimethylsilylmethyl phosphonate, 1-3 parts of crosslinker TAIC (Triallyl Isocyanurate), 28-33 parts of modified filler, 1-2 parts of antioxidant RD, 0.1-0.2 part of antioxidant NBC (N,N-dibutyldithiocarbamate), 2-3 parts of cashew shell oil, 1-3 parts of triethyl citrate and 1.0-1.5 parts of stearic acid.

Description

A kind of fatigue-resisting rubber sealing-ring

Technical field

The present invention relates to rubber enclosed field, is exactly a kind of fatigue-resisting rubber sealing-ring.

Background technology

The circular cowling that rubber seal apron is comprised of one or several part, be fixed on lasso of bearing or packing ring and contact or form narrow labyrinth clearance with another lasso or packing ring, prevent that lubricating oil from spilling and foreign object is invaded, the rubber elastomer (butyronitrile, viton, silica gel, natural gum and other rubber) of take is main raw, strengthening cloth (nylon, glass fiber, Nomex (Nomex nylon) and other extraordinary cloth of strengthening) is skeleton, can select different elastomericss and skeleton to be processed into the rubber diaphragm of different thickness according to customer requirement.

Summary of the invention

The object of the present invention is to provide a kind of fatigue-resisting rubber sealing-ring.

Above-mentioned purpose realizes by following scheme:

A kind of fatigue-resisting rubber sealing-ring, it is characterized in that: it is that raw material by following weight parts makes: paracril 80-90, smoke sheet rubber 5-10, chloroprene rubber 8-10, oxidized polyethlene wax 1-2, thermoplastic styrene butadiene rubber 5-7, sulphur 1-2, Vulcanization accelerator TMTD 1.2-2, carbon fiber 1-2, calcium stearate 2-4, trimethylsilyl dimethyl methyl phosphonate 1.2-2.5, linking agent TAIC 1-3, modified filler 28-33, anti-aging agent RD 1-2, antioxidant NBC 0.1-0.2, cashew nut shell oil 2-3, triethyl citrate 1-3, stearic acid 1.0-1.5;

Described modified filler is made by the raw material of following weight part:

Kaolin 20-25, silica powder 5-12, silicon carbide 1-2, manganese naphthenate 1-2, magnesium oxide 1-2, epoxy oleum lini 2.5-3.5, tindioxide 1-3, sodium-acetate 1-3, zinc borate 1-2, Melamine 1.5-2.3, antimonous oxide 6-12, lead sulfate tribasic 1-2;

The preparation method of described modified filler is:

In the hydrogen peroxide that is 10-20% in concentration by kaolin, silica powder, soak 4-6 hour, take out, dry, put into sudden strain of a muscle firing and at 880-950 ℃, dodge burning 2-4 second, take out, the acetic acid solution of putting into 10-15% soaks 3-6 hour, after filtration, deionized water wash 3-4 time, dries, be added to the water, add again epoxy oleum lini, zinc borate, sodium-acetate, Melamine, stir, obtain slurry, spraying is dried to obtain dried powder, then mixes and get final product with surplus stock.

Described a kind of fatigue-resisting rubber sealing-ring, is characterized in that: get by weight paracril, chloroprene rubber fully mixing after, more fully the mixing rubber unvulcanizate of obtaining is after over cure according to weight part, to add other raw materials, reprocessing moulding obtains product.

Beneficial effect of the present invention is: the sealing-ring that the present invention produces has good heat-proof aging, tear-resistant, anti-dynamic fatigue property, long service life, economic environmental protection.

Embodiment

A kind of fatigue-resisting rubber sealing-ring, it is that raw material by following weight kg makes: paracril 83, smoke sheet rubber 7, chloroprene rubber 10, oxidized polyethlene wax 1, thermoplastic styrene butadiene rubber 7, sulphur 1, Vulcanization accelerator TMTD 1.7, carbon fiber 1, calcium stearate 3.4, trimethylsilyl dimethyl methyl phosphonate 1.8, linking agent TAIC 1, modified filler 30, anti-aging agent RD 1, antioxidant NBC 0.2, cashew nut shell oil 2.3, triethyl citrate 3, stearic acid 1.5;

Described modified filler is made by the raw material of following weight kg:

Kaolin 25, silica powder 7, silicon carbide 1.5, manganese naphthenate 1.2, magnesium oxide 1, epoxy oleum lini 2.9, tindioxide 3, sodium-acetate 3, zinc borate 1, Melamine 1.8, antimonous oxide 12, lead sulfate tribasic 2;

The preparation method of described modified filler is:

In the hydrogen peroxide that is 17% in concentration by kaolin, silica powder, soak 6 hours, take out, dry, put into and dodge firing and at 930 ℃, dodges and burn 4 seconds, taking-up, puts into 15% acetic acid solution and soaks 6 hours, after filtration, deionized water wash 3 times, dries, be added to the water, add again epoxy oleum lini, zinc borate, sodium-acetate, Melamine, stir, obtain slurry, spraying is dried to obtain dried powder, then mixes and get final product with surplus stock.

Described a kind of fatigue-resisting rubber sealing-ring, get by weight paracril, chloroprene rubber fully mixing after, more fully the mixing rubber unvulcanizate of obtaining is after over cure according to weight part, to add other raw materials, reprocessing moulding obtains product.

The present embodiment tensile strength is 16.6Mpa,

The present embodiment, in 80 ° of C thermostatic baths, is placed 720 hours, below before and after test, changes in hardness 10 is spent; Cold-hot shock test: the present embodiment is made to sealing-ring and be placed under-20 ° of C and 100 ° of C conditions each 1 hour, and in 200 cycles, its changes in hardness is below 15 degree.

High temperature resistant test: 125 ° of C*164h, outward appearance without distortion, contraction, crackle, be clamminess and separate out phenomenon.

Claims (2)

1. a fatigue-resisting rubber sealing-ring, it is characterized in that: it is that raw material by following weight parts makes: paracril 80-90, smoke sheet rubber 5-10, chloroprene rubber 8-10, oxidized polyethlene wax 1-2, thermoplastic styrene butadiene rubber 5-7, sulphur 1-2, Vulcanization accelerator TMTD 1.2-2, carbon fiber 1-2, calcium stearate 2-4, trimethylsilyl dimethyl methyl phosphonate 1.2-2.5, linking agent TAIC 1-3, modified filler 28-33, anti-aging agent RD 1-2, antioxidant NBC 0.1-0.2, cashew nut shell oil 2-3, triethyl citrate 1-3, stearic acid 1.0-1.5;

Described modified filler is made by the raw material of following weight part:

Kaolin 20-25, silica powder 5-12, silicon carbide 1-2, manganese naphthenate 1-2, magnesium oxide 1-2, epoxy oleum lini 2.5-3.5, tindioxide 1-3, sodium-acetate 1-3, zinc borate 1-2, Melamine 1.5-2.3, antimonous oxide 6-12, lead sulfate tribasic 1-2;

The preparation method of described modified filler is:

In the hydrogen peroxide that is 10-20% in concentration by kaolin, silica powder, soak 4-6 hour, take out, dry, put into sudden strain of a muscle firing and at 880-950 ℃, dodge burning 2-4 second, take out, the acetic acid solution of putting into 10-15% soaks 3-6 hour, after filtration, deionized water wash 3-4 time, dries, be added to the water, add again epoxy oleum lini, zinc borate, sodium-acetate, Melamine, stir, obtain slurry, spraying is dried to obtain dried powder, then mixes and get final product with surplus stock.

2. a kind of fatigue-resisting rubber sealing-ring according to claim 1, it is characterized in that: get by weight paracril, chloroprene rubber fully mixing after, fully the mixing rubber unvulcanizate of obtaining is after over cure according to weight part, to add other raw materials again, and reprocessing moulding obtains product.