CN103724834A - Electrical insulation sealing ring - Google Patents

Abstract

The invention discloses an electrical insulation sealing ring, which comprises the following raw materials in parts by weight: 95-100 parts of ethylene-propylene-diene monomer 4045m, 1-2 parts of cyanurotriamide, 1-2 parts of zirconium dioxide, 4-6 parts of ditetradecyl carbon alcohol ester, 11-14 parts of potassium feldspar powder, 1-2 parts of triethoxyvinylsilane, 6-8 parts of chlorcosane, 4-5 parts of polyethylene wax micro powder, 1-2 parts of tetrabutylammonium bromide, 7-10 parts of attapulgite, 2-3 parts of carbowax 1000, 0.9-1.2 parts of 2.4-dichloro benzoyl peroxide, 1-2 parts of disulfide isopropyl xanthate, 1-2 parts of an antiager A and 17-30 parts of composite filler. The electrical insulation sealing has excellent electric insulativity, heat resistance and corrosion resistance and can be widely applied to various automobile fittings.

Description

A kind of electrical isolation sealing-ring

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Technical field

The present invention relates generally to auto parts machinery field, relates in particular to a kind of electrical isolation sealing-ring.

Background technology

Ethylene-propylene rubber(EPR) is ageing-resistant, electrical insulation capability and ozone resistance outstanding, and can be in a large number oil-filled and fill carbon black, goods price be lower, and ethylene-propylene rubber(EPR) chemical stability is good, and wear resistance, elasticity, oil-proofness and styrene-butadiene rubber(SBR) are approaching.The purposes of ethylene-propylene rubber(EPR) is very extensive, can be used as the component of tyre side, adhesive tape and the inner tube of a tyre and automobile, can also make electric wire, cable sheathing and high pressure, ultra-high voltage insulating material.Also can manufacture and the light goods such as footwear, sanitary product.

Summary of the invention

The object of the invention is just to provide a kind of electrical isolation sealing-ring.

The present invention is achieved by the following technical solutions:

A kind of electrical isolation sealing-ring, it is comprised of the raw material of following weight parts:

Terpolymer EP rubber 4045m 95-100, trimeric cyanamide 1-2, zirconium dioxide 1-2, two ten four carbon alcohols ester 4-6, feldspar in powder 11-14, vinyltriethoxysilane 1-2, clorafin 6-8, polyethylene wax micro mist 4-5, Tetrabutyl amonium bromide 1-2, attapulgite 7-10, cetomacrogol 1000 2-3,2.4-dichlorobenzoperoxide 0.9-1.2, dithiodiisopropyl xanthate 1-2, antioxidant A 1-2, compounded mix 17-30;

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

Black earth 40-46, oyster shell powder 5-7, medical stone powder 4-6, butyl polyacrylate 2-3, sodium metnylene bis-naphthalene sulfonate 2-3, barium metaborate 2-3, Terpineol 350 1-2, water are appropriate;

Above-mentioned black earth is calcined to 1-2 hour at 600-700 ℃, after cooling discharging, grind into powder, above-mentioned sodium metnylene bis-naphthalene sulfonate is joined in 3-4 times of water, after stirring, add oyster shell powder, medical stone powder, be heated to 60-70 ℃, insulated and stirred 10-12 minute, add barium metaborate, continue to be stirred to water dry, be cooled to normal temperature, mix with above-mentioned black earth powder after treatment, add the each raw material of residue, ball milling, sieves, and obtains described compounded mix.

A preparation method for electrical isolation sealing-ring, comprises the following steps:

Above-mentioned terpolymer EP rubber 4045m is mixed with attapulgite, put into Banbury mixer and refine glue 10-25 time; Add the each raw material except 2.4-dichlorobenzoperoxide, dithiodiisopropyl xanthate, mixing to 95-100 ℃, binder removal, be cooled to below 50 ℃, drop in mill, add the each raw material of residue, thin-pass 3-5 time, obtains described electrical isolation sealing-ring.

Advantage of the present invention is:

Electrical isolation sealing-ring of the present invention has good electrical insulating property, and heat-resisting, good corrosion resistance can be widely used in various auto parts machineries.

Embodiment

Embodiment 1

A kind of electrical isolation sealing-ring, it by following weight parts (kilogram) raw material form:

Terpolymer EP rubber 4045m 100, trimeric cyanamide 1, zirconium dioxide 1, two ten four carbon alcohols esters 6, feldspar in powder 14, vinyltriethoxysilane 1, clorafin 8, polyethylene wax micro mist 4, Tetrabutyl amonium bromide 2, attapulgite 10, cetomacrogol 1000 3,2.4-dichlorobenzoperoxide 1.2, dithiodiisopropyl xanthate 1, antioxidant A 2, compounded mix 30;

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

Black earth 46, oyster shell powder 7, medical stone powder 4, butyl polyacrylate 3, sodium metnylene bis-naphthalene sulfonate 2, barium metaborate 2, Terpineol 350 2, water are appropriate;

Above-mentioned black earth is calcined 1 hour at 700 ℃, after cooling discharging, ground into powder, above-mentioned sodium metnylene bis-naphthalene sulfonate is joined in 4 times of water, after stirring, add oyster shell powder, medical stone powder, be heated to 70 ℃, insulated and stirred 12 minutes, add barium metaborate, continue to be stirred to water dry, be cooled to normal temperature, mix with above-mentioned black earth powder after treatment, add the each raw material of residue, ball milling, sieves, and obtains described compounded mix.

A preparation method for electrical isolation sealing-ring, comprises the following steps:

Above-mentioned terpolymer EP rubber 4045m is mixed with attapulgite, put into Banbury mixer and refine glue 25 times; Add the each raw material except 2.4-dichlorobenzoperoxide, dithiodiisopropyl xanthate, mixing to 100 ℃, binder removal, is cooled to below 50 ℃, drops in mill, adds the each raw material of residue, and thin-pass 3 times, obtains described electrical isolation sealing-ring.

Performance test:

Tensile strength at yield: 13.6Mpa;

Elongation at break: 308%;

150 ℃ × 24h × 25% compression set: 10.2%;

500000 pressure 7 Mpa normal temperature long duration tests: pass through;

500000 pressure 7 Mpa high temperature long duration tests: pass through;

150 ℃ × 70h air oven aging test:

Tensile strength at yield reduced rate: 4.6%, elongation at break reduced rate: 7.3%.

Claims (2)

1. an electrical isolation sealing-ring, is characterized in that what it was comprised of the raw material of following weight parts:

Terpolymer EP rubber 4045m 95-100, trimeric cyanamide 1-2, zirconium dioxide 1-2, two ten four carbon alcohols ester 4-6, feldspar in powder 11-14, vinyltriethoxysilane 1-2, clorafin 6-8, polyethylene wax micro mist 4-5, Tetrabutyl amonium bromide 1-2, attapulgite 7-10, cetomacrogol 1000 2-3,2.4-dichlorobenzoperoxide 0.9-1.2, dithiodiisopropyl xanthate 1-2, antioxidant A 1-2, compounded mix 17-30;

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

Black earth 40-46, oyster shell powder 5-7, medical stone powder 4-6, butyl polyacrylate 2-3, sodium metnylene bis-naphthalene sulfonate 2-3, barium metaborate 2-3, Terpineol 350 1-2, water are appropriate;

Above-mentioned black earth is calcined to 1-2 hour at 600-700 ℃, after cooling discharging, grind into powder, above-mentioned sodium metnylene bis-naphthalene sulfonate is joined in 3-4 times of water, after stirring, add oyster shell powder, medical stone powder, be heated to 60-70 ℃, insulated and stirred 10-12 minute, add barium metaborate, continue to be stirred to water dry, be cooled to normal temperature, mix with above-mentioned black earth powder after treatment, add the each raw material of residue, ball milling, sieves, and obtains described compounded mix.

2. a preparation method for electrical isolation sealing-ring as claimed in claim 1, is characterized in that comprising the following steps:

Above-mentioned terpolymer EP rubber 4045m is mixed with attapulgite, put into Banbury mixer and refine glue 10-25 time; Add the each raw material except 2.4-dichlorobenzoperoxide, dithiodiisopropyl xanthate, mixing to 95-100 ℃, binder removal, be cooled to below 50 ℃, drop in mill, add the each raw material of residue, thin-pass 3-5 time, obtains described electrical isolation sealing-ring.