CN104292841A - Special high-insulativity compounded silicon rubber sealing gasket for metal film capacitors - Google Patents

Abstract

The invention relates to a special high-insulativity compounded silicon rubber sealing gasket for metal film capacitors, which is composed of the following components in parts by weight: 80 parts of methyl vinyl unvulcanized rubber, 10 parts of methyl silicon resin, 10 parts of silica white, 0.5 part of silane coupling agent, 10 parts of carbon fiber, 10 parts of kieselguhr, 2 parts of magnesium carbonate, 0.5 part of gypsum, 1 part of boric acid solution, 2 parts of xylitol, 1.5 parts of glycerol triacetate, 1.5 parts of chlorinated paraffin, 2.5 parts of glass fiber, 5 parts of industrial plasticine, 0.5 part of asbestos, 2 parts of stearyl alcohol, 1.5 parts of nano boron fiber and 10 parts of modified corn starch. The sealing gasket is simple in components and simple in preparation technique; the improved corn starch is added to enhance the insulativity and extrudability of the rubber; and the vulcanized product has the advantages of favorable physical properties, lower toxic or side effect, lower environmental pollution, favorable mechanical properties and favorable processability.

Description

Metal film capacitor special height insulation melting silicone rubber gasket

Technical field

The present invention relates to rubber item technical field, be specifically related to a kind of metal film capacitor special height insulation melting silicone rubber gasket.

Background technology

Silicon rubber, point heat vulcanization type, room temperature vulcanized two kinds, wherein room temperature vulcanized divides again polycondensation reaction type and addition reaction-type.High temperature silicone rubber is mainly for the manufacture of various silastic product, and room temperature silicon rubber then mainly uses as caking agent, Embedding Material or mould.Heat vulcanization type consumption is maximum, and heat vulcanization type divides again methyl silicone rubber, methyl vinyl silicone rubber, methyl vinyl phenyl silicon rubber, and other also have eyeball silicon rubber, trifluoropropyl siloxane etc.In numerous synthetic rubber, silicon rubber is outstanding person wherein.It has tasteless nontoxic, is not afraid of high temperature and the feature resisting severe cold, and " keeping cool ", " remaining calm " when 300 degrees Celsius and subzero 90 degrees Celsius, still do not lose original intensity and elasticity.Silicon rubber also has good electrical insulating property, oxytolerant resistance to deterioration, fast light resistance to deterioration and mildew resistance, chemical stability etc.Owing to being provided with the performance of these excellences, silicon rubber is made extensively to have played vital role in modern medicine.

Electrical condenser, usually referred to as electric capacity, is one of a large amount of electronic component used in electronics, be widely used in circuit every aspects such as straight-through friendship, coupling, bypass, filtering, resonant tank, energy transformation, controls.Electrical condenser is made up of housing, capacitor core, end cap and connection terminal, capacitor casing is built with steeping medium, steeping medium is generally vegetables oil or mineral oil, the sealing position of electrical condenser is equipped with gasket or sealing-ring, because the Working environment of electrical condenser varies, some electrical condensers needs to work under rugged environment, and electrical condenser gasket needs high temperature resistant, insulation, cold-resistant, acid and alkali-resistance, salt spray resistance etc. have different requirement.

Summary of the invention

Technical problem to be solved by this invention be to provide a kind of physicals good, prepare simple metal film capacitor special height insulation melting silicone rubber gasket.

Technical problem to be solved by this invention realizes by the following technical solutions:

A kind of metal film capacitor special height insulation melting silicone rubber gasket, is made up of the component of following parts by weight: Methyl-ethylenvinyl gum 80 parts, methyl silicon resin 10 parts, white carbon black 10 parts, silane coupling agent 0.5 part, 10 parts, carbon fiber, 10 parts, diatomite, 2 parts, magnesiumcarbonate, 0.5 part, gypsum, boric acid solution 1 part, Xylitol 2 parts, Vanay 1.5 parts, clorafin 1.5 parts, 2.5 parts, glass fibre, 5 parts, industrial plasticine, 0.5 part, asbestos, stearyl alcohol 2 parts, nanometer boron fibre 1.5 parts and modified corn starch 10 parts.

Above-mentioned modified corn starch is made up of the component of following mass fraction: W-Gum 80 parts, xanthan gum 5 parts, 5 parts, N.F,USP MANNITOL, stearic acid 5 parts, matrine 3 parts, Esterified Enzyme composite bacteria liquid 5 parts, selenium yeast 0.5 part, pitch 2 parts, Glyceryl Behenate 2 parts, catechin 0.5 part, defoamer 0.5 part, 2 parts, xylogen, sodium lignosulfonate 2 parts, emulsifying agent 2 parts, 1 part, oxidation inhibitor, 100 parts, water;

The preparation method of above-mentioned modified corn starch is as follows:

1) be placed in baking oven by W-Gum, toast at 125 DEG C of temperature, baking time is 35 seconds, and the thickness of W-Gum in baking oven is 1cm;

2) the corn dry starch after baking is cooled to normal temperature, then put into reach in freezer and close freezing 24 hours, freezing temp is-6 DEG C;

3) freezing complete after, the W-Gum freezed is put into stainless steel heating tank, and add xanthan gum, N.F,USP MANNITOL, stearic acid, matrine, Esterified Enzyme composite bacteria liquid, selenium yeast, pitch, Glyceryl Behenate, catechin, defoamer, xylogen, sodium lignosulfonate, emulsifying agent, oxidation inhibitor and water, then stainless steel heating tank is closed;

4) heated raw material by stainless steel heating tank, heat while stirring, its stirring velocity controls at 120 revs/min, after being heated with stirring to 90 DEG C-165 DEG C, stops heating, and continues to stir 60-65 minute;

5) by the starch milk suction after heated and stirred on the freezing bed of stainless steel, to keep under 0 DEG C of-2 DEG C of condition refrigeration 24 hours, make its crystallization retrogradation, make water molecules from starch, analyse drench out;

6) by step 5) in analyse drench water molecules after starch block be placed on 60 DEG C of drying in oven, make its moisture content within 10%, and cross 120 mesh sieves, must modified corn starch be become.

The Meteorological Act white carbon black of described white carbon black to be specific surface area be 200 ㎡/g.

Described methyl silicon resin average molar mass is the concentration of 3000/mol, Si-OH base is 2.3mol/kg, softening temperature 81 DEG C.

Another object of the present invention is to provide a kind of method preparing metal film capacitor special height insulation melting silicone rubber gasket, and method steps is as follows:

1) in Methyl-ethylenvinyl gum, methyl silicon resin, diatomite, industrial plasticine, asbestos, gypsum and white carbon black is added successively, evenly mixing in kneader, in 18 DEG C of process 3 hours;

2) silane coupling agent, carbon fiber, magnesiumcarbonate, boric acid solution, Xylitol, Vanay, clorafin, glass fibre, stearyl alcohol, nanometer boron fibre and modified corn starch is added again, evenly mixing in kneader, in 150 DEG C of process 6 hours, be mixed with sizing material;

3) sizing material hot-press vulcanization under 170 DEG C of conditions is made the thick test piece of 2mm for 10 minutes, under 200 DEG C of conditions, twice sulfuration passes through mould extrusion moulding in 4 hours in an oven.

The invention has the beneficial effects as follows: instant component is simple, preparation technology is simple, W-Gum is improved by adding, the insulating property of sizing material can be improved, improve it extrudability, and the physicals of vulcanized article is good, reduces its toxic side effect and the pollution to environment, has good mechanical property and processing characteristics.

Embodiment

The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.

Embodiment 1

A kind of metal film capacitor special height insulation melting silicone rubber gasket, be made up of the component of following parts by weight: Methyl-ethylenvinyl gum 80 kilograms, methyl silicon resin 10 kilograms, white carbon black 10 kilograms, silane coupling agent 0.5 kilogram, 10 kilograms, carbon fiber, 10 kilograms, diatomite, 2 kilograms, magnesiumcarbonate, 0.5 kilogram, gypsum, boric acid solution 1 kilogram, Xylitol 2 kilograms, Vanay 1.5 kilograms, clorafin 1.5 kilograms, 2.5 kilograms, glass fibre, industry 5 kilograms, plasticine, 0.5 kilogram, asbestos, stearyl alcohol 2 kilograms, nanometer boron fibre 1.5 kilograms and modified corn starch 10 kilograms.

Above-mentioned modified corn starch is made up of the component of following weight: W-Gum 80 kilograms, xanthan gum 5 kilograms, 5 kilograms, N.F,USP MANNITOL, stearic acid 5 kilograms, matrine 3 kilograms, Esterified Enzyme composite bacteria liquid 5 kilograms, selenium yeast 0.5 kilogram, pitch 2 kilograms, Glyceryl Behenate 2 kilograms, catechin 0.5 kilogram, defoamer 0.5 kilogram, 2 kilograms, xylogen, sodium lignosulfonate 2 kilograms, emulsifying agent 2 kilograms, 1 kilogram, oxidation inhibitor, 100 kilograms, water; It is 201210335099.1 that Esterified Enzyme composite bacteria liquid in embodiment is selected from Jin Yu Anhui, the Anhui Province biotechnology development corporation, Ltd. production patent No.;

The preparation method of above-mentioned modified corn starch is as follows:

1) be placed in baking oven by W-Gum, toast at 125 DEG C of temperature, baking time is 35 seconds, and the thickness of W-Gum in baking oven is 1cm;

2) the corn dry starch after baking is cooled to normal temperature, then put into reach in freezer and close freezing 24 hours, freezing temp is-6 DEG C;

3) freezing complete after, the W-Gum freezed is put into stainless steel heating tank, and add xanthan gum, N.F,USP MANNITOL, stearic acid, matrine, Esterified Enzyme composite bacteria liquid, selenium yeast, pitch, Glyceryl Behenate, catechin, defoamer, xylogen, sodium lignosulfonate, emulsifying agent, oxidation inhibitor and water, then stainless steel heating tank is closed;

4) heated raw material by stainless steel heating tank, heat while stirring, its stirring velocity controls at 120 revs/min, after being heated with stirring to 90 DEG C-165 DEG C, stops heating, and continues to stir 60-65 minute;

5) by the starch milk suction after heated and stirred on the freezing bed of stainless steel, to keep under 0 DEG C of-2 DEG C of condition refrigeration 24 hours, make its crystallization retrogradation, make water molecules from starch, analyse drench out;

6) by step 5) in analyse drench water molecules after starch block be placed on 60 DEG C of drying in oven, make its moisture content within 10%, and cross 120 mesh sieves, must modified corn starch be become.

Another object of the present invention is to provide a kind of method preparing metal film capacitor special height insulation melting silicone rubber gasket, and method steps is as follows:

1) in Methyl-ethylenvinyl gum, methyl silicon resin, diatomite, industrial plasticine, asbestos, gypsum and white carbon black is added successively, evenly mixing in kneader, in 18 DEG C of process 3 hours;

2) silane coupling agent, carbon fiber, magnesiumcarbonate, boric acid solution, Xylitol, Vanay, clorafin, glass fibre, stearyl alcohol, nanometer boron fibre and modified corn starch is added again, evenly mixing in kneader, in 150 DEG C of process 6 hours, be mixed with sizing material;

3) sizing material hot-press vulcanization under 170 DEG C of conditions is made the thick test piece of 2mm for 10 minutes, under 200 DEG C of conditions, twice sulfuration passes through mould extrusion moulding in 4 hours in an oven.

More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (2)

1. a metal film capacitor special height insulation melting silicone rubber gasket, it is characterized in that, be made up of the component of following parts by weight: Methyl-ethylenvinyl gum 80 parts, methyl silicon resin 10 parts, white carbon black 10 parts, silane coupling agent 0.5 part, 10 parts, carbon fiber, 10 parts, diatomite, 2 parts, magnesiumcarbonate, 0.5 part, gypsum, boric acid solution 1 part, Xylitol 2 parts, Vanay 1.5 parts, clorafin 1.5 parts, 2.5 parts, glass fibre, 5 parts, industrial plasticine, 0.5 part, asbestos, stearyl alcohol 2 parts, nanometer boron fibre 1.5 parts and modified corn starch 10 parts;

Above-mentioned modified corn starch is made up of the component of following mass fraction: W-Gum 80 parts, xanthan gum 5 parts, 5 parts, N.F,USP MANNITOL, stearic acid 5 parts, matrine 3 parts, Esterified Enzyme composite bacteria liquid 5 parts, selenium yeast 0.5 part, pitch 2 parts, Glyceryl Behenate 2 parts, catechin 0.5 part, defoamer 0.5 part, 2 parts, xylogen, sodium lignosulfonate 2 parts, emulsifying agent 2 parts, 1 part, oxidation inhibitor, 100 parts, water; The preparation method of above-mentioned modified corn starch is as follows:

1) be placed in baking oven by W-Gum, toast at 125 DEG C of temperature, baking time is 35 seconds, and the thickness of W-Gum in baking oven is 1cm;

2) the corn dry starch after baking is cooled to normal temperature, then put into reach in freezer and close freezing 24 hours, freezing temp is-6 DEG C;

3) freezing complete after, the W-Gum freezed is put into stainless steel heating tank, and add xanthan gum, N.F,USP MANNITOL, stearic acid, matrine, Esterified Enzyme composite bacteria liquid, selenium yeast, pitch, Glyceryl Behenate, catechin, defoamer, xylogen, sodium lignosulfonate, emulsifying agent, oxidation inhibitor and water, then stainless steel heating tank is closed;

4) heated raw material by stainless steel heating tank, heat while stirring, its stirring velocity controls at 120 revs/min, after being heated with stirring to 90 DEG C-165 DEG C, stops heating, and continues to stir 60-65 minute;

5) by the starch milk suction after heated and stirred on the freezing bed of stainless steel, to keep under 0 DEG C of-2 DEG C of condition refrigeration 24 hours, make its crystallization retrogradation, make water molecules from starch, analyse drench out;

6) by step 5) in analyse drench water molecules after starch block be placed on 60 DEG C of drying in oven, make its moisture content within 10%, and cross 120 mesh sieves, must modified corn starch be become.

2. prepare a method for the special height insulation of metal film capacitor described in claim 1 melting silicone rubber gasket, it is characterized in that:

1) in Methyl-ethylenvinyl gum, methyl silicon resin, diatomite, industrial plasticine, asbestos, gypsum and white carbon black is added successively, evenly mixing in kneader, in 18 DEG C of process 3 hours;

2) silane coupling agent, carbon fiber, magnesiumcarbonate, boric acid solution, Xylitol, Vanay, clorafin, glass fibre, stearyl alcohol, nanometer boron fibre and modified corn starch is added again, evenly mixing in kneader, in 150 DEG C of process 6 hours, be mixed with sizing material;

3) sizing material hot-press vulcanization under 170 DEG C of conditions is made the thick test piece of 2mm for 10 minutes, under 200 DEG C of conditions, twice sulfuration passes through mould extrusion moulding in 4 hours in an oven.