CN103665888A - Method for preparing fire-resistant conductive silicone rubber - Google Patents
Method for preparing fire-resistant conductive silicone rubber Download PDFInfo
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- CN103665888A CN103665888A CN201310620337.8A CN201310620337A CN103665888A CN 103665888 A CN103665888 A CN 103665888A CN 201310620337 A CN201310620337 A CN 201310620337A CN 103665888 A CN103665888 A CN 103665888A
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- silicon rubber
- resistant conductive
- conductive silicon
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Abstract
The invention discloses a method for preparing fire-resistant conductive silicone rubber. The method comprises the steps as follows: acetylene black is pretreated firstly, then raw silicone rubber is mixed with other additives, and the temperature is adjusted for kneading. According to the method, the silicone rubber can be resistant to the high temperature of 360 DEG C, the tensile strength can be up to 8.5 MPa, the tearing strength is 33 N/mm, the volume resistivity can be up to 50 omega.cm, the silicone rubber is free from deformation and embrittlement in case of fire for a long time, physical properties of the silicone rubber are not changed, and the good flame retardant effect can be realized.
Description
Technical field
The present invention relates to silicon rubber technical field, particularly relate to a kind of method of preparing fire-resistant conductive silicon rubber.
Background technology
Along with silicon rubber is applied more and more wider in people's life, the sufficient utilization that the good thermotolerance that silicon rubber itself has, low temperature resistant, insulativity, antidetonation, resistance to compression, resistance to abrasion all obtain, but, silicon rubber itself is not fire-resistant, easily there is to meet when in use fiery combustion problem, there is very large hazardness, as spark coil just requires not only have electroconductibility, and to there is the resistivity against fire of metalloid, general conductive silicon rubber does not reach this requirement at present, and method of the present invention can overcome above application limitations.
Summary of the invention
Object of the present invention is exactly to provide a kind of method of preparing fire-resistant conductive silicon rubber for the defect of above-mentioned existence.Silicon rubber ability 360 celsius temperatures of the present invention, tensile strength can reach 8.5MPa, and tear strength is 33N/mm, volume specific resistance can reach 50 Ω cm, meet fire indeformable, not embrittlement for a long time, guarantee that the physicals of silicon rubber does not change, can play good flame retardant effect.
A kind of method and technology scheme of preparing fire-resistant conductive silicon rubber of the present invention is to comprise the following steps:
(1) after being mixed, Shawinigan black, hydroxy silicon oil and the water that accounts for Shawinigan black weight 1% add tablets press to make Shawinigan black particle;
(2) raw-silastic continuously is put into kneader, white carbon black is added in batches, centre adds methyl-silicone oil, mediates built-in temperature 130-140 ℃;
(3) be warmed up to 170-180 ℃, add successively liquid silastic, calcium carbonate, Shawinigan black particle, wilkinite, zirconium white, aluminium hydroxide, Magnesium Stearate, STRUCTURE DEPRESSION agent, containing the silane coupling agent of vinyl;
(4) cool to 130-140 ℃, stir 2-3 minute, finally add platinum complex, obtain fire-resistant conductive silicon rubber.
Each composition is by weight:
Raw-silastic continuously 100
White carbon black 15-20
Calcium carbonate 5-7
Shawinigan black 13-15
Wilkinite 5-8
Zirconium white 1-2
Aluminium hydroxide 5-8
Magnesium Stearate 0.5-1
Platinum complex 0.2-0.5
STRUCTURE DEPRESSION agent 16-18
Liquid silastic 5-10
Silane coupling agent 1-3 containing vinyl
Hydroxy silicon oil 1-2
Methyl-silicone oil 10-15.
Raw-silastic continuously is methyl vinyl silicone rubber.
In step (1), Shawinigan black particle diameter is 0.5-0.8mm.
Platinum complex is ethylene methacrylic radical siloxane coordination platinum complex.
STRUCTURE DEPRESSION agent is at least one in pregnancy basic ring three silazane, Diphenylsilanediol, aminomethyl phenyl diethoxy silane.
Silane coupling agent containing vinyl is that vinyl molar fraction is the methyl ethylene organopolysiloxane of 0.03-0.05%.
Methyl-silicone oil is that the polymerization degree is the methyl-silicone oil of 1000CS.
Beneficial effect of the present invention is: silicon rubber preparation method of the present invention, and its conduction raw material Shawinigan black, through pre-treatment, forms particle, and tap density increases, and does not play dirt, easily disperses.Liquid silastic can be used as adhesive aid simultaneously, makes rubber bound good, and mechanical property is high, and silicon rubber of the present invention has advantages of high thermal conductivity, electroconductibility and resistivity against fire, because it has good thermal conductivity, therefore can bear larger conductive current.Silicon rubber ability 360 celsius temperatures of the present invention, tensile strength can reach 8.5MPa, and tear strength is 33N/mm, volume specific resistance can reach 50 Ω cm, meet fire indeformable, not embrittlement for a long time, guarantee that the physicals of silicon rubber does not change, can play good flame retardant effect.
embodiment:
In order to understand better the present invention, with specific examples, describe technical scheme of the present invention in detail below, but the present invention is not limited thereto.
Embodiment 1
A kind of method of preparing fire-resistant conductive silicon rubber of the present invention, comprises the following steps:
(1) after being mixed, Shawinigan black, hydroxy silicon oil and the water that accounts for Shawinigan black weight 1% add tablets press to make Shawinigan black particle;
(2) raw-silastic continuously is put into kneader, white carbon black is added in batches, centre adds methyl-silicone oil, mediates built-in temperature 130-140 ℃;
(3) be warmed up to 170-180 ℃, add successively liquid silastic, calcium carbonate, Shawinigan black particle, wilkinite, zirconium white, aluminium hydroxide, Magnesium Stearate, STRUCTURE DEPRESSION agent, containing the silane coupling agent of vinyl;
(4) cool to 130-140 ℃, stir 2-3 minute, finally add platinum complex, obtain fire-resistant conductive silicon rubber.
Each composition is by weight:
Methyl vinyl silicon kautschuk 100
White carbon black 18
Calcium carbonate 6
Shawinigan black 14
Wilkinite 6
Zirconium white 1
Aluminium hydroxide 6
Magnesium Stearate 0.6
Ethylene methacrylic radical siloxane coordination platinum complex 0.3
STRUCTURE DEPRESSION agent 17
Liquid silastic 8
Silane coupling agent 2 containing vinyl
Hydroxy silicon oil 2
The polymerization degree is the methyl-silicone oil 13 of 1000CS.
In step (1), Shawinigan black particle diameter is 0.5-0.8mm.
STRUCTURE DEPRESSION agent is pregnancy basic ring three silazane, Diphenylsilanediol, aminomethyl phenyl diethoxy silane mixture.
Silane coupling agent containing vinyl is that vinyl molar fraction is the methyl ethylene organopolysiloxane of 0.03-0.05%.
Silicon rubber ability 360 celsius temperatures of the present invention, tensile strength can reach 8.5MPa, and tear strength is 33N/mm, volume specific resistance can reach 50 Ω cm, meet fire indeformable, not embrittlement for a long time, guarantee that the physicals of silicon rubber does not change, can play good flame retardant effect.
Embodiment 2
A kind of method of preparing fire-resistant conductive silicon rubber of the present invention, comprises the following steps:
(1) after being mixed, Shawinigan black, hydroxy silicon oil and the water that accounts for Shawinigan black weight 1% add tablets press to make Shawinigan black particle;
(2) raw-silastic continuously is put into kneader, white carbon black is added in batches, centre adds methyl-silicone oil, mediates built-in temperature 130-140 ℃;
(3) be warmed up to 170-180 ℃, add successively liquid silastic, calcium carbonate, Shawinigan black particle, wilkinite, zirconium white, aluminium hydroxide, Magnesium Stearate, STRUCTURE DEPRESSION agent, containing the silane coupling agent of vinyl;
(4) cool to 130-140 ℃, stir 2-3 minute, finally add platinum complex, obtain fire-resistant conductive silicon rubber.
Each composition is by weight:
Methyl vinyl silicon kautschuk 100
White carbon black 20
Calcium carbonate 7
Shawinigan black 13
Wilkinite 5
Zirconium white 2
Aluminium hydroxide 8
Magnesium Stearate 1
Ethylene methacrylic radical siloxane coordination platinum complex 0.2
STRUCTURE DEPRESSION agent 16
Liquid silastic 5
Silane coupling agent 3 containing vinyl
Hydroxy silicon oil 1
The polymerization degree is the methyl-silicone oil 10 of 1000CS.
In step (1), Shawinigan black particle diameter is 0.5-0.8mm.
STRUCTURE DEPRESSION agent is pregnancy basic ring three silazane, Diphenylsilanediol, aminomethyl phenyl diethoxy silane mixture.
Silane coupling agent containing vinyl is that vinyl molar fraction is the methyl ethylene organopolysiloxane of 0.03-0.05%.
Silicon rubber ability 360 celsius temperatures of the present invention, tensile strength can reach 8.5MPa, and tear strength is 33N/mm, volume specific resistance can reach 50 Ω cm, meet fire indeformable, not embrittlement for a long time, guarantee that the physicals of silicon rubber does not change, can play good flame retardant effect.
Embodiment 3
A kind of method of preparing fire-resistant conductive silicon rubber of the present invention, comprises the following steps:
(1) after being mixed, Shawinigan black, hydroxy silicon oil and the water that accounts for Shawinigan black weight 1% add tablets press to make Shawinigan black particle;
(2) raw-silastic continuously is put into kneader, white carbon black is added in batches, centre adds methyl-silicone oil, mediates built-in temperature 130-140 ℃;
(3) be warmed up to 170-180 ℃, add successively liquid silastic, calcium carbonate, Shawinigan black particle, wilkinite, zirconium white, aluminium hydroxide, Magnesium Stearate, STRUCTURE DEPRESSION agent, containing the silane coupling agent of vinyl;
(4) cool to 130-140 ℃, stir 2-3 minute, finally add platinum complex, obtain fire-resistant conductive silicon rubber.
Each composition is by weight:
Methyl vinyl silicon kautschuk 100
White carbon black 15
Calcium carbonate 5
Shawinigan black 15
Wilkinite 8
Zirconium white 1
Aluminium hydroxide 5
Magnesium Stearate 0.5
Ethylene methacrylic radical siloxane coordination platinum complex 0.4
STRUCTURE DEPRESSION agent 18
Liquid silastic 10
Silane coupling agent 1 containing vinyl
Hydroxy silicon oil 2
The polymerization degree is the methyl-silicone oil 15 of 1000CS.
In step (1), Shawinigan black particle diameter is 0.5-0.8mm.
STRUCTURE DEPRESSION agent is pregnancy basic ring three silazane, Diphenylsilanediol, aminomethyl phenyl diethoxy silane mixture.
Silane coupling agent containing vinyl is that vinyl molar fraction is the methyl ethylene organopolysiloxane of 0.03-0.05%.
Silicon rubber ability 360 celsius temperatures of the present invention, tensile strength can reach 8.5MPa, and tear strength is 33N/mm, volume specific resistance can reach 50 Ω cm, meet fire indeformable, not embrittlement for a long time, guarantee that the physicals of silicon rubber does not change, can play good flame retardant effect.
Claims (8)
1. a method of preparing fire-resistant conductive silicon rubber, is characterized in that, comprises the following steps:
(1) after being mixed, Shawinigan black, hydroxy silicon oil and the water that accounts for Shawinigan black weight 1% add tablets press to make Shawinigan black particle;
(2) raw-silastic continuously is put into kneader, white carbon black is added in batches, centre adds methyl-silicone oil, mediates built-in temperature 130-140 ℃;
(3) be warmed up to 170-180 ℃, add successively liquid silastic, calcium carbonate, Shawinigan black particle, wilkinite, zirconium white, aluminium hydroxide, Magnesium Stearate, STRUCTURE DEPRESSION agent, containing the silane coupling agent of vinyl;
(4) cool to 130-140 ℃, stir 2-3 minute, finally add platinum complex, obtain fire-resistant conductive silicon rubber.
2. a kind of method of preparing fire-resistant conductive silicon rubber according to claim 1, is characterized in that, each composition is by weight:
Raw-silastic continuously 100
White carbon black 15-20
Calcium carbonate 5-7
Shawinigan black 13-15
Wilkinite 5-8
Zirconium white 1-2
Aluminium hydroxide 5-8
Magnesium Stearate 0.5-1
Platinum complex 0.2-0.5
STRUCTURE DEPRESSION agent 16-18
Liquid silastic 5-10
Silane coupling agent 1-3 containing vinyl
Hydroxy silicon oil 1-2
Methyl-silicone oil 10-15.
3. a kind of method of preparing fire-resistant conductive silicon rubber according to claim 2, is characterized in that, raw-silastic continuously is methyl vinyl silicone rubber.
4. a kind of method of preparing fire-resistant conductive silicon rubber according to claim 2, is characterized in that, in step (1), Shawinigan black particle diameter is 0.5-0.8mm.
5. a kind of method of preparing fire-resistant conductive silicon rubber according to claim 2, is characterized in that, platinum complex is ethylene methacrylic radical siloxane coordination platinum complex.
6. a kind of method of preparing fire-resistant conductive silicon rubber according to claim 2, is characterized in that, STRUCTURE DEPRESSION agent is at least one in pregnancy basic ring three silazane, Diphenylsilanediol, aminomethyl phenyl diethoxy silane.
7. a kind of method of preparing fire-resistant conductive silicon rubber according to claim 2, is characterized in that, the silane coupling agent that contains vinyl is that vinyl molar fraction is the methyl ethylene organopolysiloxane of 0.03-0.05%.
8. a kind of method of preparing fire-resistant conductive silicon rubber according to claim 2, is characterized in that, methyl-silicone oil is that the polymerization degree is the methyl-silicone oil of 1000CS.
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| CN201310620337.8A CN103665888A (en) | 2013-11-29 | 2013-11-29 | Method for preparing fire-resistant conductive silicone rubber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104327513A (en) * | 2014-10-08 | 2015-02-04 | 安徽奥丰汽车配件有限公司 | Heat conduction mixing silicon rubber through combination of alumina and magnesium carbonate |
| CN104761908A (en) * | 2014-12-29 | 2015-07-08 | 广东阿尔派新材料股份有限公司 | Shielding rubber applied to plug type shielding detachable connector and preparation method thereof |
| CN104868422A (en) * | 2015-06-01 | 2015-08-26 | 金海新源电气江苏有限公司 | Flame-retardant waterproof bus groove and manufacturing process thereof |
| CN104934909A (en) * | 2015-06-01 | 2015-09-23 | 金海新源电气江苏有限公司 | Light fireproof high-strength cable bridge and machining method therefor |
| CN115029002A (en) * | 2022-07-06 | 2022-09-09 | 昆山堃烨电子科技有限公司 | Preparation method of conductive silicone rubber |
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| CN101531789A (en) * | 2009-04-20 | 2009-09-16 | 宝胜科技创新股份有限公司 | Radiation-resistant halogen-free low smoke flame retardant insulating material for cables of nuclear power plants and preparation method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104327513A (en) * | 2014-10-08 | 2015-02-04 | 安徽奥丰汽车配件有限公司 | Heat conduction mixing silicon rubber through combination of alumina and magnesium carbonate |
| CN104761908A (en) * | 2014-12-29 | 2015-07-08 | 广东阿尔派新材料股份有限公司 | Shielding rubber applied to plug type shielding detachable connector and preparation method thereof |
| CN104868422A (en) * | 2015-06-01 | 2015-08-26 | 金海新源电气江苏有限公司 | Flame-retardant waterproof bus groove and manufacturing process thereof |
| CN104934909A (en) * | 2015-06-01 | 2015-09-23 | 金海新源电气江苏有限公司 | Light fireproof high-strength cable bridge and machining method therefor |
| CN104934909B (en) * | 2015-06-01 | 2017-10-13 | 金海新源电气江苏有限公司 | A kind of light-weight refractory high-strength cable bridge and its processing method |
| CN104868422B (en) * | 2015-06-01 | 2017-10-13 | 金海新源电气江苏有限公司 | Fire-resistant waterproof bus duct and its manufacturing process |
| CN115029002A (en) * | 2022-07-06 | 2022-09-09 | 昆山堃烨电子科技有限公司 | Preparation method of conductive silicone rubber |
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Application publication date: 20140326 |