CN103709469A - High-durability rubber apron material - Google Patents

Abstract

The invention discloses a high-durability rubber apron material which is prepared from the following raw materials in parts by weight: 20-30 parts of silicon rubber, 40-50 parts of nitrile-butadiene rubber, 5-10 parts of graphite powder, 2-4 parts of dioctyl terephthalate, 12-15 parts of diatomite, 12-14 parts of porcelain clay, 2-3 parts of PEG (Polyethylene glycol) 4000, 2-4 parts of Rhine wax, 1-2 parts of sulphur, 2-3 parts of polyamide fiber, 1-2 parts of ammonium polyphosphate and 23-28 parts of modified filler. The high-durability rubber apron material is uniform in mixing and good in compatibility; due to the addition of the porcelain clay and the modified filler, the high-durability rubber apron material is high in durability and long in service life.

Description

A kind of high-durability rubber enclosed material

Technical field

The present invention relates to rubber enclosed field, is exactly a kind of high-durability rubber enclosed material.

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 high-durability rubber enclosed material.

Above-mentioned purpose realizes by following scheme:

A kind of high-durability rubber enclosed material, it is characterized in that: it is that raw material by following weight parts makes: silicon rubber 20-30, paracril 40-50, Graphite Powder 99 5-10, dioctyl terephthalate 2-4, diatomite 12-15, china clay 12-14, PEG4000 2-3, Lay mattress wax 2-4, sulphur 1-2, tynex 2-3, ammonium polyphosphate 1-2, modified filler 23-28;

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

Kaolin 20-25, bamboo charcoal powder 1-2, 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 sodium hydroxide 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 high-durability rubber enclosed material, is characterized in that: preparation method is: get by weight silicon rubber, paracril fully mixing after, then according to weight part add other raw materials fully the mixing rubber unvulcanizate of obtaining after over cure, obtain product.

Beneficial effect of the present invention is: the present invention is mixing, and evenly consistency is good, adds china clay and modified filler, and weather resistance is high, long service life.

Embodiment

A kind of high-durability rubber enclosed material, it is that raw material by following weight kg makes: silicon rubber 30, paracril 50, Graphite Powder 99 5, dioctyl terephthalate 4, diatomite 12, china clay 12, PEG4000 3, Lay mattress wax 2, sulphur 2, tynex 3, ammonium polyphosphate 2, modified filler 28;

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

Kaolin 25, bamboo charcoal powder 2, silicon carbide 2, manganese naphthenate 1, magnesium oxide 1.6, epoxy oleum lini 3.3, tindioxide 2.3, sodium-acetate 3, zinc borate 1, Melamine 2.3, antimonous oxide 9, lead sulfate tribasic 1;

The preparation method of described modified filler is:

In the sodium hydroxide that is 20% in concentration by kaolin, silica powder, soak 6 hours, take out, dry, put into and dodge firing and at 930 ℃, dodges and burn 2 seconds, taking-up, puts into 15% acetic acid solution and soaks 5 hours, after filtration, deionized water wash 4 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 high-durability rubber enclosed material, preparation method is: get by weight silicon rubber, paracril fully mixing after, then according to weight part add other raw materials fully the mixing rubber unvulcanizate of obtaining after over cure, obtain product.

The present embodiment tensile strength is 21.2Mpa,

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 high-durability rubber enclosed material, it is characterized in that: it is that raw material by following weight parts makes: silicon rubber 20-30, paracril 40-50, Graphite Powder 99 5-10, dioctyl terephthalate 2-4, diatomite 12-15, china clay 12-14, PEG4000 2-3, Lay mattress wax 2-4, sulphur 1-2, tynex 2-3, ammonium polyphosphate 1-2, modified filler 23-28;

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

Kaolin 20-25, bamboo charcoal powder 1-2, 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 sodium hydroxide 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 high-durability rubber enclosed material according to claim 1, it is characterized in that: preparation method is: get by weight silicon rubber, paracril fully mixing after, according to weight part, add the abundant mixing rubber unvulcanizate of obtaining of other raw materials after over cure again, obtain product.