CN103725015A - Seal ring material for automobile engine - Google Patents

Abstract

The invention discloses a seal ring material for an automobile engine. The seal ring material comprises the following raw materials by weight: 94-100 parts of methylethylene silicon rubber, 20-30 parts of ethylene propylene diene monomer rubber, 7-10 parts of tailings, 2-3 parts of copper naphthenate, 1-2 parts of N, N- diethyl aniline, 2-4 parts of polybenzimidazole, 1-2 parts of sodium silicate, 1-2 parts of 2,6-butylated hydroxytoluene, 1-2 parts of polyvinylpyrrolidone, 10-16 parts of potash feldspar powder, 6-10 parts of light calcium carbonate, 2-3 parts of aluminum hydroxide, 1-2 parts of an accelerant M, 0.6-1 part of an accelerant TMTD (Tetramethylthiuram Disulfide), 0.8-1 part of sulphur, 1-2 parts of an anti-aging agent AW and 21-30 parts of composite filler. The seal ring material for the automobile engine has high performance of resisting high and low temperatures, oil, solvents and chemicals. The pollution to environments is reduced, and the production cost is lowered.

Description

A kind of motor car engine sealing-ring material

Technical field

The present invention relates generally to automobile shock field, relates in particular to a kind of motor car engine sealing-ring material.

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 motor car engine sealing-ring material.

The present invention is achieved by the following technical solutions:

A kind of motor car engine sealing-ring material, it is comprised of the raw material of following weight parts:

Methyl vinyl silicone rubber 94-100, terpolymer EP rubber 20-30, mine tailing 7-10, copper naphthenate 2-3, N, N-Diethyl Aniline 1-2, polybenzimidazole 2-4, water glass 1-2,2,6 ditertiary butyl p cresol 1-2, polyvinylpyrrolidone 1-2, feldspar in powder 10-16, light calcium carbonate 6-10, aluminium hydroxide 2-3, captax 1-2, Vulcanization accelerator TMTD 0.6-1, sulphur 0.8-1, antioxidant A W1-2, compounded mix 21-30;

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 sealing-ring material for motor car engine, comprises the following steps:

Above-mentioned methyl vinyl silicone rubber and terpolymer EP rubber are mixed to join in mill and are plasticated, the roller temperature of mill is 40-50 ℃, the time of plasticating is 6-10 minute, adds the each raw material except captax, Vulcanization accelerator TMTD, sulphur, mixing 10-20 minute at 110-120 ℃, discharge, be cooled to, below 50 ℃, join in mill, add the each raw material of residue, sulfuration, obtains described motor car engine sealing-ring material.

Advantage of the present invention is:

The high-low temperature resistant of sealing-ring material for motor car engine of the present invention, oil resistant, resistance to solvent and chemical resistance are good, have reduced the pollution to environment, have reduced production cost.

Embodiment

Embodiment 1

A kind of motor car engine sealing-ring material, it by following weight parts (kilogram) raw material form:

Methyl vinyl silicone rubber 100, terpolymer EP rubber 30, mine tailing 10, copper naphthenate 3, N, N-Diethyl Aniline 2, polybenzimidazole 4, water glass 1,2,6 ditertiary butyl p cresol 2, polyvinylpyrrolidone 1, feldspar in powder 16, light calcium carbonate 10, aluminium hydroxide 2-3, captax 2, Vulcanization accelerator TMTD 0.6, sulphur 0.8, antioxidant A W1, compounded mix 30;

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

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

Above-mentioned attapulgite is mixed with asbolane, after stirring, add polyvinyl alcohol, at 80 ℃, be uniformly mixed 20 minutes, rising temperature is 100 ℃, adds tetrafluoroethylene, stirs 5 minutes, 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 sealing-ring material for motor car engine, comprises the following steps:

Above-mentioned methyl vinyl silicone rubber and terpolymer EP rubber are mixed to join in mill and are plasticated, the roller temperature of mill is 50 ℃, the time of plasticating is 10 minutes, adds the each raw material except captax, Vulcanization accelerator TMTD, sulphur, at 120 ℃ mixing 20 minutes, discharge, be cooled to, below 50 ℃, join in mill, add the each raw material of residue, sulfuration, obtains described motor car engine sealing-ring material.

Performance test:

Tensile strength: 13.5MPa;

Elongation at break: 398%;

Oil-proofness: 23 ℃ × 72h of 20# machine oil, elongation at break conservation rate 82.1%, tensile strength conservation rate 82.3%;

Ageing-resistant: 220 ℃, 720h, tensile strength conservation rate 82.7%, elongation at break conservation rate 82.1%.

Claims (2)

1. a motor car engine sealing-ring material, is characterized in that what it was comprised of the raw material of following weight parts:

Methyl vinyl silicone rubber 94-100, terpolymer EP rubber 20-30, mine tailing 7-10, copper naphthenate 2-3, N, N-Diethyl Aniline 1-2, polybenzimidazole 2-4, water glass 1-2,2,6 ditertiary butyl p cresol 1-2, polyvinylpyrrolidone 1-2, feldspar in powder 10-16, light calcium carbonate 6-10, aluminium hydroxide 2-3, captax 1-2, Vulcanization accelerator TMTD 0.6-1, sulphur 0.8-1, antioxidant A W1-2, compounded mix 21-30;

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 sealing-ring material for motor car engine as claimed in claim 1, is characterized in that comprising the following steps:

Above-mentioned methyl vinyl silicone rubber and terpolymer EP rubber are mixed to join in mill and are plasticated, the roller temperature of mill is 40-50 ℃, the time of plasticating is 6-10 minute, adds the each raw material except captax, Vulcanization accelerator TMTD, sulphur, mixing 10-20 minute at 110-120 ℃, discharge, be cooled to, below 50 ℃, join in mill, add the each raw material of residue, sulfuration, obtains described motor car engine sealing-ring material.