A kind of high heat conduction tenacity acrylic's ester rubber
Technical field
The present invention relates to a kind of acrylate rubber, be specifically related to one and there is high heat conduction, elastomeric acrylate rubber
Glue.
Background technology
Acrylate rubber refers to acrylate for main monomer through elastomer obtained by copolymerization, and its main chain is saturated carbon
Chain, side base is polar ester groups, and it has the performances such as excellent heat-resisting, ageing-resistant, oil resistant, resistance to ozone, uvioresistant, mechanical property
Being better than fluorubber and silicone rubber with processing characteristics, its heat-resisting, resistance to ag(e)ing and oil resistivity are better than nitrile rubber, and it is widely used in
In various high temperature, resistance to oil environment.
Acrylate rubber is when being used as loading structure packing ring under hot conditions, and, heat conductivity, elasticity heat-resisting to it have
Very high request, existing product is all difficult to life-time service, needs frequently to change.The present invention is directed to this problem carried out in detail
Research, finally give and there is excellent heat conducting, heat-resisting, elastic acrylate rubber, can high temperature, heavy burden machinery in use
Make packing ring, use the cycle long.
Summary of the invention
Goal of the invention: the present invention provides a kind of high heat conduction tenacity acrylic's ester rubber, it has good heat conductivity, resistance to
Hot and elastic, can meet high temperature, heavy burden machinery in be used as the demand of packing ring.
The present invention provide acrylate rubber by combed acrylate rubber 100 weight portion, elastomer 20-40 weight portion,
Compatilizer 3-6 weight portion, plasticizer 2-8 weight portion, toughener 15-35 weight portion, coupling agent 3-5 weight portion, vulcanizing agent 1-3 weight
Amount part, pigment 0-5 weight portion and compounded mix 36-80 weight portion composition.
Present invention uses combed acrylate rubber and polyurethane nano microsphere toughener.Acrylic rubber is as elasticity
Body, in the polymerized segment that its side chain graft is certain, forms comb structure, serves the buffering between main chain section, receive external force
Extruding, side chain section folds, buffers.
The combed acrylate rubber of described combed acrylate rubber more preferably lateral chain grafting polyester resin,
Polyester resin preferably comprises Merlon segment, and Merlon, as segment, which raises resistance to elevated temperatures and improves, but content is too
Promoting further of low resistance to elevated temperatures is inconspicuous, and content is the highest, can cause elastic reduction, therefore Merlon segment accounts for total polyester
Resin quality is most preferably 30-50%.
Using polyurethane nano microsphere toughener further, it is dispersed in acrylate rubber, and polyurethane nano microsphere rises
Having arrived good cushioning effect, external force peptizaiton is excellent, and effect is much better than other kinds of toughener.
Combed acrylate rubber and polyurethane nano microsphere with the use of, reached stress dispersion to greatest extent.
Toughener is preferably polyester resin grafted polyurethane Nano microsphere further, makes polyurethane nano microsphere gather with matrix side chain graft
The combed acrylate rubber of ester resin reaches high compatibility.
Described elastomer is SEBS, SBS, SIS or SEPS, and the use of elastomer further increases wilfulness, in order to realize
It is the most identical with matrix, adds suitably to peer.Consider the resistance to elevated temperatures of elastomer further, therefore most preferably
SEBS、SEPS。
Another important performance of the present invention is resistance to elevated temperatures, and it is quickly derived based on by heat, therefore described being combined is filled out
Material is CNT and spherical aluminium sesquioxide, and weight ratio is 3-5:1.CNT and spherical aluminium sesquioxide formed " point-
Line " connect, the coupling agent added in component makes contacting of filler and acrylate rubber, CNT and spherical aluminium sesquioxide
More stable, heat conductivity is more preferably.
As further preferably, CNT nano silver wire filling carbon nano-pipe.
Silver is as a kind of high-thermal conductive metal, and nano silver wire is filled in CNT, and heat is quickly formed at CNT
Space in pass to, affected less by outer acrylate rubber, it is possible to achieve heat quickly passes to, this is simple silver nanoparticle
Line, CNT are beyond one's reach.
Described vulcanizing agent is polyamine vulcanizing agent, preferably diethylenetriamine, triethylene tetramine, TEPA, 1,6-
Hexamethylene diamine.
Described coupling agent is amino silicane coupling agent, can be A-1100, A-1110,1-1120, A-1130, KBM-602,
South big-42, southern big-73.
Described pigment is Chinese white, red pigment, black pigment, blue pigment, viridine green, silver, gold
Pigment, gray paint and mixture thereof.Pigment carries out mixture according to actual color.
Technique effect: multicomponent is selected and combined by the present invention, be specially use combed acrylate rubber with
Polyurethane nano microsphere toughener coordinates, and plasticizer and elastomer are to use to improve elasticity so that it is be adapted to high answering
The dispersion of power, weighs effective;Use the proportioning of nano silver wire filling carbon nano-pipe and spherical aluminium sesquioxide special ratios, real
Show high heat conduction;Further preferably combed acrylate rubber and the polyester resin grafted polyurethane of lateral chain grafting polyester resin is received
Meter Wei Qiu improves again elasticity;The selection of SEBS and SEPS can also improve resistance to elevated temperatures.The combination of above-mentioned each component and use
Amount selection is to there is mutual synergism between specific selection, each component, improves heat conductivity, high temperature resistant and elastic, its
It is much better than the simple superposition of independent component.
Detailed description of the invention
Principle and feature to the present invention are described below, and example is only intended to explain the present invention, is not intended to
Limit the scope of the present invention.
Embodiment 1:
A kind of high heat conduction tenacity acrylic's ester rubber, consisting of the combed acrylate rubber of lateral chain grafting polyester resin
100 weight portions, elastomer SEBS 40 weight portion, compatilizer 6 weight portion, plasticizer 7 weight portion, toughener polyester resin are grafted
Polyurethane nano microsphere 25 weight portion, coupling agent 4 weight portion, vulcanizing agent 2 weight portion, pigment 2 weight portion and compounded mix 50 weight
Amount part, wherein in the combed acrylate rubber of lateral chain grafting polyester resin, Merlon segment accounts for total polyester resin quality 30%,
Compounded mix is nano silver wire filling carbon nano-pipe and spherical aluminium sesquioxide, and weight ratio is 4:1.
After each component mix homogeneously, can use after sulfuration.High heat conduction tenacity acrylic's ester rubber becomes through molding
Circular gasket.
Embodiment 2:
A kind of high heat conduction tenacity acrylic's ester rubber, consisting of the combed acrylate rubber of lateral chain grafting polyester resin
100 weight portions, elastomer SEBS 30 weight portion, compatilizer 5 weight portion, plasticizer 6 weight portion, toughener polyester resin are grafted
Polyurethane nano microsphere 30 weight portion, coupling agent 3 weight portion, vulcanizing agent 3 weight portion, pigment 1 weight portion and compounded mix 60 weight
Amount part, wherein in the combed acrylate rubber of lateral chain grafting polyester resin, Merlon segment accounts for total polyester resin quality 50%,
Compounded mix is nano silver wire filling carbon nano-pipe and spherical aluminium sesquioxide, and weight ratio is 4:1.
After each component mix homogeneously, can use after sulfuration.High heat conduction tenacity acrylic's ester rubber becomes through molding
Circular gasket.
Embodiment 3:
In embodiment 1, the combed acrylate rubber of lateral chain grafting polyester resin replaces with the side chain graft without Merlon segment
The combed acrylate rubber of polyester resin.
Embodiment 4:
In embodiment 1, toughener polyester resin grafted polyurethane Nano microsphere replaces with the polyurethane nano microsphere without grafting.
Embodiment 5:
In embodiment 1, nano silver wire filling carbon nano-pipe replaces with CNT.
Comparative example 1:
In embodiment 1, the combed acrylate rubber of lateral chain grafting polyester resin replaces with non-combed acrylate rubber.
Comparative example 2:
In embodiment 1, the combed acrylate rubber of lateral chain grafting polyester resin replaces with the combed third of lateral chain grafting polyester resin
Olefin(e) acid ester rubber, wherein in the combed acrylate rubber of lateral chain grafting polyester resin, Merlon segment accounts for total polyester resin matter
Amount 80%.
Comparative example 3:
In embodiment 1, toughener polyester resin grafted polyurethane Nano microsphere replaces with neoprene.
Comparative example 4:
In embodiment 1, nano silver wire filling carbon nano-pipe replaces with nano silver wire.
Comparative example 5:
Spherical aluminium sesquioxide in embodiment 1 replaces with needle-like aluminium sesquioxide.
Embodiment is as follows with comparative example component and performance test synopsis:
Contrasted by above-mentioned experimental data, it is found that the structure of acrylic resin, grafting material, toughener kind and structure, fill out
Material kind all creates decisive influence to final products, and there is impact each other, is to interact, non-single effect,
This combination and impact the most do not appear in the newspapers.