CN103725014A - Silicone rubber for railway vehicle - Google Patents

Abstract

The invention discloses silicone rubber for a railway vehicle. The silicone rubber comprises the following raw materials in parts by weight: 91 to 100 parts of methyl vinyl silicone rubber, 1 to 2 parts of triadimenol, 2 to 3 parts of etidronic acid, 3 to 5 parts of adipic acid propylene glycol polyester, 1 to 2 parts of casein, 14 to 20 parts of precipitated white carbon black, 2 to 3 parts of ammonium polyphosphate, 3 to 5 parts of asbolane, 5 to 7 parts of light calcium carbonate, 6 to 10 parts of blanc fixe, 1 to 2 parts of beta-hydroxyl alkyl amide, 1 to 2 parts of antioxygen DSTP, 1 to 2 parts of potassium tripolyphosphate, 1 to 2 parts of peroxide bi (2,4-benzoyl dichloride), and 19 to 30 parts of composite fillers. The silicone rubber has good flame retardance and fire resistance, high surface strength, excellent physical property, strong abrasion resistance and crushing resistance and good stability.

Description

A kind of silicon rubber material used for rail vehicle

Technical field

The present invention relates generally to auto parts machinery field, relates in particular to a kind of silicon rubber material used for rail vehicle.

Background technology

Methyl vinyl silicone rubber high-and low-temperature resistance, can long term operation at-50-250 ℃, moistureproof, electrical insulating property, and resistance to electric arc, corona, ageing-resistant, ozone resistance, surface is viscosity and hydrophobic nature not, and compression set is little, resistance to saturation steam; Be widely used in the update of high-and low-temperature resistance sealed tube, packing ring, cylinder, button rubber roll, porcelain insulator.

Summary of the invention

The object of the invention is just to provide a kind of silicon rubber material used for rail vehicle.

The present invention is achieved by the following technical solutions:

A kind of silicon rubber material used for rail vehicle, it is comprised of the raw material of following weight parts:

Methyl vinyl silicone rubber 91-100, triadimenol 1-2,1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 2-3, hexanodioic acid propanediol polyester 3-5, casein food grade 1-2, precipitated silica 14-20, ammonium polyphosphate 2-3, asbolane 3-5, light calcium carbonate 5-7, ground barium sulfate 6-10, β-hydroxyalkyl amide 1-2, oxidation inhibitor DSTP1-2, Potassium tripolyphosphate 1-2, peroxidation two (2,4-dichloro-benzoyl) 1-2, compounded mix 19-30;

Described compounded mix is comprised of the raw material of following weight parts:

Attapulgite 60-70, asbolane 6-10, aluminium dihydrogen phosphate 2-3, high boron lime borate 2-3, tetrafluoroethylene 4-5, Xylo-Mucine 1-2, polyvinyl alcohol 3-4, water are appropriate;

Above-mentioned attapulgite is mixed with asbolane, after stirring, add polyvinyl alcohol, at 70-80 ℃, be uniformly mixed 15-20 minute, rising temperature is 90-100 ℃, adds tetrafluoroethylene, stirs 3-5 minute, be cooled to normal temperature, add aluminium dihydrogen phosphate, mix, add Xylo-Mucine, then add Xylo-Mucine weight 4-6 water doubly, mix to water dry, add the each raw material of residue, ball milling, sieves, and obtains described compounded mix.

A preparation method for silicon rubber material used for rail vehicle, comprises the following steps:

Above-mentioned methyl vinyl silicone rubber is dropped in kneader, the mixing 8-10min that uncaps, melting temperature is 100-110 ℃, adds except peroxidation two (2,4-dichloro-benzoyl) each raw material in addition, mixing 30-50 minute at 160-180 ℃, discharge, is cooled to below 50 ℃, join in mill, add the each raw material of residue, sulfuration, obtains described silicon rubber material used for rail vehicle.

Advantage of the present invention is:

Silicon rubber material used for rail vehicle of the present invention has good cigarette, the flame retardant resistance of pressing down, and surface strength is high, and physicals is superior, and wear-resistant crushing resistance is strong, good stability.

Embodiment

Embodiment 1

A kind of silicon rubber material used for rail vehicle, it by following weight parts (kilogram) raw material form:

Methyl vinyl silicone rubber 91-100, triadimenol 1-2,1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 2-3, hexanodioic acid propanediol polyester 3-5, casein food grade 1-2, precipitated silica 14-20, ammonium polyphosphate 2-3, asbolane 3-5, light calcium carbonate 5-7, ground barium sulfate 6-10, β-hydroxyalkyl amide 1-2, oxidation inhibitor DSTP1-2, Potassium tripolyphosphate 1-2, peroxidation two (2,4-dichloro-benzoyl) 1-2, compounded mix 19-30;

Described compounded mix is comprised of the raw material of following weight parts:

Attapulgite 60-70, asbolane 6-10, aluminium dihydrogen phosphate 2-3, high boron lime borate 2-3, tetrafluoroethylene 4-5, Xylo-Mucine 1-2, polyvinyl alcohol 3-4, water are appropriate;

Above-mentioned attapulgite is mixed with asbolane, after stirring, add polyvinyl alcohol, at 70-80 ℃, be uniformly mixed 15-20 minute, rising temperature is 90-100 ℃, adds tetrafluoroethylene, stirs 3-5 minute, be cooled to normal temperature, add aluminium dihydrogen phosphate, mix, add Xylo-Mucine, then add Xylo-Mucine weight 4-6 water doubly, mix to water dry, add the each raw material of residue, ball milling, sieves, and obtains described compounded mix.

A preparation method for silicon rubber material used for rail vehicle, comprises the following steps:

Above-mentioned methyl vinyl silicone rubber is dropped in kneader, the mixing 10min that uncaps, melting temperature is 110 ℃, adds except peroxidation two (2,4-dichloro-benzoyl) each raw material in addition, at 180 ℃ mixing 50 minutes, discharge, was cooled to below 50 ℃, join in mill, add the each raw material of residue, sulfuration, obtains described silicon rubber material used for rail vehicle.

Performance test:

Tensile strength: 11.7MPa;

Elongation at break: 392%;

Oil-proofness: 23 ℃ × 72h of 20# machine oil, elongation at break conservation rate 85.6%, tensile strength conservation rate 82.1%;

Ageing-resistant: 220 ℃, 720h, tensile strength conservation rate 83.1%, elongation at break conservation rate 81.2%.

Claims (2)

1. a silicon rubber material used for rail vehicle, is characterized in that what it was comprised of the raw material of following weight parts:

Methyl vinyl silicone rubber 91-100, triadimenol 1-2,1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 2-3, hexanodioic acid propanediol polyester 3-5, casein food grade 1-2, precipitated silica 14-20, ammonium polyphosphate 2-3, asbolane 3-5, light calcium carbonate 5-7, ground barium sulfate 6-10, β-hydroxyalkyl amide 1-2, oxidation inhibitor DSTP1-2, Potassium tripolyphosphate 1-2, peroxidation two (2,4-dichloro-benzoyl) 1-2, compounded mix 19-30;

Described compounded mix is comprised of the raw material of following weight parts:

Attapulgite 60-70, asbolane 6-10, aluminium dihydrogen phosphate 2-3, high boron lime borate 2-3, tetrafluoroethylene 4-5, Xylo-Mucine 1-2, polyvinyl alcohol 3-4, water are appropriate;

Above-mentioned attapulgite is mixed with asbolane, after stirring, add polyvinyl alcohol, at 70-80 ℃, be uniformly mixed 15-20 minute, rising temperature is 90-100 ℃, adds tetrafluoroethylene, stirs 3-5 minute, be cooled to normal temperature, add aluminium dihydrogen phosphate, mix, add Xylo-Mucine, then add Xylo-Mucine weight 4-6 water doubly, mix to water dry, add the each raw material of residue, ball milling, sieves, and obtains described compounded mix.

2. a preparation method for silicon rubber material used for rail vehicle as claimed in claim 1, is characterized in that comprising the following steps:

Above-mentioned methyl vinyl silicone rubber is dropped in kneader, the mixing 8-10min that uncaps, melting temperature is 100-110 ℃, adds except peroxidation two (2,4-dichloro-benzoyl) each raw material in addition, mixing 30-50 minute at 160-180 ℃, discharge, is cooled to below 50 ℃, join in mill, add the each raw material of residue, sulfuration, obtains described silicon rubber material used for rail vehicle.