CN105400005A - Composite rubber material good in heat conduction insulating performance - Google Patents

Abstract

The invention discloses a composite rubber material good in heat conduction insulating performance. The composite rubber material good in heat conduction insulating performance is prepared from, by weight, 4-5 parts of epoxy acetyl methyl linoleate, 2-3 parts of ethylene thiourea, 1-2 parts of an antioxidant-1010, 24-27 parts of polyacrylonitrile, 12-13 parts of graphite, 3-4 parts of coal ash micro beads, 0.7-1 part of sodium lauryl sulfate, 42-55 parts of liquid nitrile rubber, 0.6-1 part of methacrylic acid, 52-60 parts of nitrile rubber, 20-25 parts of butadiene styrene rubber, 3-4 parts of trichloropropylphosphate, 4-5 parts of polyvinyl alcohol, 2-3 parts of methyl silicone oil, 16-20 parts of nanomesoporous molecular sieve, 7-9 parts of carbon fibers, 13-15 parts of fluorapatite and 0.3-0.4 part of zinc borate. The rubber material has good oil resistance, heat resistance, insulating performance and flame retardance and is resistant to tearing, and meanwhile, the rubber material is low in cost, good in practicability and worthy of popularization.

Description

The composite rubber material that a kind of heat conductive insulating is good

Technical field

The present invention relates to field of rubber technology, particularly relate to the composite rubber material that a kind of heat conductive insulating is good.

Background technology

Elastomeric material is a kind of macromolecular material that can recover rapidly deformation under gross distortion, and it is one of important foundation industry of national economy, daily, medically provides light industry rubber product for indispensable in people's daily life; For the heavy industry such as digging, traffic, building, machinery, electronics and new industry provide various rubber production unit or rubber components, apply very extensive.In recent years, developing rapidly of rubber industry, has higher requirement to rubber item, elastomeric material must towards functionalization, become more meticulous and the future development of diversification.Traditional single elastomeric material can not meet the service requirements developed rapidly completely.Rubber belongs to elastomerics and lacks crystallizing power, and Intermolecular Forces is little, and free volume is large, so its intensity, hardness, the performance such as wear-resisting and tired are not high, so to rubber through reinforcement, will improve its performance.The strengthening agent that rubber industry is the most traditional is carbon black and white carbon black always, although have certain strengthening action, but these two kinds of strengthening agents all have very low volume density, when adding in rubber, very easily producing and flying upward, processing pollution weight, long processing time simultaneously, mixing energy consumption is large, and black-reinforced goods are single black, and these two kinds of strengthening agents are difficult to give goods higher hardness, better resistance to ventilation property etc.

Graphite is a kind of stratified material, there is excellent lubricity, under stripping state, have very high shape factor, graphite is one of material that specific tenacity is the highest, and has unique functional performance, as electroconductibility and thermal conductivity etc., and cost is low, the strongthener as rubber can improve its tribological property, but the Van der Waals force owing to having between the inert nature of graphite material itself and synusia thereof, directly join in rubber and can greatly reduce its mechanical property, reduce work-ing life.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides the composite rubber material that a kind of heat conductive insulating is good.

The present invention is achieved by the following technical solutions:

The composite rubber material that heat conductive insulating is good, is made up of the raw material of following weight part: epoxy acetyl linolenic acid methyl esters 4-5, ethylene thiourea 2-3, antioxidant 1010 1-2, polyacrylonitrile 24-27, graphite 12-13, fly ash micro-sphere 3-4, sodium lauryl sulphate 0.7-1, liquid acrylonitrile butadiene rubber 42-55, methacrylic acid 0.6-1, paracril 52-60, styrene-butadiene rubber(SBR) 20-25, trichloropropyl phosphate 3-4, polyvinyl alcohol 4-5, methyl-silicone oil 2-3, nano mesoporous molecular screen 16-20, carbon fiber 7-9, fluorapatite 13-15, zinc borate 0.3-0.4.

The composite rubber material that described a kind of heat conductive insulating is good, be made up of following concrete steps:

(1) polyvinyl alcohol, nano mesoporous molecular screen, carbon fiber and fluorapatite are added deionized water according to solid-to-liquid ratio 1:2-3 to mix well, then add zinc borate be heated to boiling under constantly stirring, after dope to be formed, after drying, grinding is for subsequent use;

(2) polyacrylonitrile is added in dimethyl sulphoxide solution, carry out stirring to pulp, concentration controls at 16-18%, add methacrylic acid mixing and stirring again, the drying in vacuum drying oven by graphite and fly ash micro-sphere, adds deionized water according to solid-to-liquid ratio 1:5-7, add sodium lauryl sulphate continuation ultrasonic agitation more even, getting its supernatant liquor is added in polyacrylonitrile solution, stirred at ambient temperature 2-3h, and after filtration, standing and defoaming, spinning, carbonization obtain polyacrylonitrile composite fiber;

(3) by after short for obtained for step (3) conjugated fibre cutting and step (1) product, the liquid acrylonitrile butadiene rubber prepared mix, the calcium chloride water adding 1wt% again flocculates, through washing and in air dry oven under 50-70 ° of C dry 24-30h, cooling after for subsequent use;

(4) paracril and styrene-butadiene rubber(SBR) are added in Banbury mixer, be warming up to 90-100 ° of C, with the speed banburying 3-5min of 100-200r/min, add product, ethylene thiourea and methyl-silicone oil prepared by step (3), be warming up to 120-140 ° of C, with the speed banburying 10-15min of 400-600r/min, then add all the other surplus materialss with the speed banburying 5-7min of 200-400r/min, thin-pass 4-6 time, obtains elastomeric material.

Advantage of the present invention is: it is high that the present invention's employing has specific tenacity, heat conduction, conduction and the good graphite of Wear vesistance are as strongthener, because being directly added in rubber and greatly can reducing mechanical property, reduce work-ing life, graphite is added in the spinning solution of polyacrylonitrile by the present invention, pass through spinning, oxidation, the mode of charing obtains the polyacrylonitrile carbon fiber of mineral carbon load, its surface is attached to by liquid acrylonitrile butadiene rubber, prevent excessive gathering, then blendedly coprecipitatedly rubber master batch is obtained, the mixing elastomeric material obtained has excellent intensity with rubber again, fatigue resistance, heat conduction, anti-attrition, the characteristic such as corrosion-resistant, the treated nano mesoporous molecular screen added, carbon fiber and fluorapatite effectively can improve the heat conduction of elastomeric material, insulativity, high thermal resistance, effect such as high-strength grade, elastomeric material of the present invention has good oil resistant, heat-resisting, insulation, fire-retardant, tear-resistant, cost is low simultaneously, practicality is good, be worthy to be popularized.

Embodiment

The composite rubber material that heat conductive insulating is good, is made up of the raw material of following weight part (kilogram): epoxy acetyl linolenic acid methyl esters 4, ethylene thiourea 2, antioxidant 1010 1, polyacrylonitrile 24, graphite 12, fly ash micro-sphere 3, sodium lauryl sulphate 0.7, liquid acrylonitrile butadiene rubber 42, methacrylic acid 0.6, paracril 52, styrene-butadiene rubber(SBR) 20, trichloropropyl phosphate 3, polyvinyl alcohol 4, methyl-silicone oil 2, nano mesoporous molecular screen 16, carbon fiber 7, fluorapatite 13, zinc borate 0.3.

The composite rubber material that described a kind of heat conductive insulating is good, be made up of following concrete steps:

(1) polyvinyl alcohol, nano mesoporous molecular screen, carbon fiber and fluorapatite are added deionized water according to solid-to-liquid ratio 1:2 to mix well, then add zinc borate be heated to boiling under constantly stirring, after dope to be formed, after drying, grinding is for subsequent use;

(2) polyacrylonitrile is added in dimethyl sulphoxide solution, carry out stirring to pulp, concentration controls 16%, add methacrylic acid mixing and stirring again, the drying in vacuum drying oven by graphite and fly ash micro-sphere, adds deionized water according to solid-to-liquid ratio 1:5, add sodium lauryl sulphate continuation ultrasonic agitation more even, getting its supernatant liquor is added in polyacrylonitrile solution, stirred at ambient temperature 2h, and after filtration, standing and defoaming, spinning, carbonization obtain polyacrylonitrile composite fiber;

(3) by after short for obtained for step (3) conjugated fibre cutting and step (1) prepare product, liquid acrylonitrile butadiene rubber mixing, then the calcium chloride water adding 1wt% flocculates, through washing and in air dry oven under 50 ° of C dry 24h, cooling is rear for subsequent use;

(4) paracril and styrene-butadiene rubber(SBR) are added in Banbury mixer, be warming up to 90 ° of C, with the speed banburying 3min of 100r/min, add product, ethylene thiourea and methyl-silicone oil prepared by step (3), be warming up to 120 ° of C, with the speed banburying 10min of 400r/min, then add all the other surplus materialss with the speed banburying 5min of 200r/min, thin-pass 4 times, obtains elastomeric material.

The elastomeric material prepared according to embodiment carries out performance test to it, and result is as follows:

Hardness (A): 52, tensile strength (MPa): 3.3,100% stress at definite elongation (MPa): 1.6, elongation at break (%): 465, setafter break (%): 5, tear strength (KN/m): 31.3, frictional coefficient: 0.6, volume wear (mm3): 6.6.

Claims (2)

1. the composite rubber material that heat conductive insulating is good, it is characterized in that, be made up of the raw material of following weight part: epoxy acetyl linolenic acid methyl esters 4-5, ethylene thiourea 2-3, antioxidant 1010 1-2, polyacrylonitrile 24-27, graphite 12-13, fly ash micro-sphere 3-4, sodium lauryl sulphate 0.7-1, liquid acrylonitrile butadiene rubber 42-55, methacrylic acid 0.6-1, paracril 52-60, styrene-butadiene rubber(SBR) 20-25, trichloropropyl phosphate 3-4, polyvinyl alcohol 4-5, methyl-silicone oil 2-3, nano mesoporous molecular screen 16-20, carbon fiber 7-9, fluorapatite 13-15, zinc borate 0.3-0.4.

2. the composite rubber material that a kind of heat conductive insulating is good according to claim 1, is characterized in that, is made up of following concrete steps:

(1) polyvinyl alcohol, nano mesoporous molecular screen, carbon fiber and fluorapatite are added deionized water according to solid-to-liquid ratio 1:2-3 to mix well, then add zinc borate be heated to boiling under constantly stirring, after dope to be formed, after drying, grinding is for subsequent use;

(2) polyacrylonitrile is added in dimethyl sulphoxide solution, carry out stirring to pulp, concentration controls at 16-18%, add methacrylic acid mixing and stirring again, the drying in vacuum drying oven by graphite and fly ash micro-sphere, adds deionized water according to solid-to-liquid ratio 1:5-7, add sodium lauryl sulphate continuation ultrasonic agitation more even, getting its supernatant liquor is added in polyacrylonitrile solution, stirred at ambient temperature 2-3h, and after filtration, standing and defoaming, spinning, carbonization obtain polyacrylonitrile composite fiber;

(3) by after short for obtained for step (3) conjugated fibre cutting and step (1) product, the liquid acrylonitrile butadiene rubber prepared mix, the calcium chloride water adding 1wt% again flocculates, through washing and in air dry oven under 50-70 ° of C dry 24-30h, cooling after for subsequent use;

(4) paracril and styrene-butadiene rubber(SBR) are added in Banbury mixer, be warming up to 90-100 ° of C, with the speed banburying 3-5min of 100-200r/min, add product, ethylene thiourea and methyl-silicone oil prepared by step (3), be warming up to 120-140 ° of C, with the speed banburying 10-15min of 400-600r/min, then add all the other surplus materialss with the speed banburying 5-7min of 200-400r/min, thin-pass 4-6 time, obtains elastomeric material.