CN109867960A - Antistatic silica gel - Google Patents
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- CN109867960A CN109867960A CN201910076233.2A CN201910076233A CN109867960A CN 109867960 A CN109867960 A CN 109867960A CN 201910076233 A CN201910076233 A CN 201910076233A CN 109867960 A CN109867960 A CN 109867960A
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Abstract
The present invention relates to silica gel technical fields, it is easy impacted problem under the high temperature conditions for the antistatic performance of silica gel, provide a kind of antistatic silica gel, the technical solution is as follows: the component including following mass fraction: 80-100 parts of silicon rubber, silicon rubber includes one of methyl silicone rubber, methyl vinyl silicone rubber and methyl phenyl vinyl silicone rubber or a variety of；1-2 parts of vulcanizing agent；0.5-1 parts of antistatic agent, antistatic agent is alkyl amino acid metal salt；0.5-0.8 parts of zinc stearate.By the way that alkyl amino acid metal salt is added as antistatic agent, be conducive to enhance the antistatic performance of silica gel, so that silica gel is not easy to inhale ash, so that silica gel product more cleaning, beauty in use, make silica gel be more suitable for using in electrostatic environment simultaneously, is conducive to the use scope for expanding silicon rubber.
Description
Technical field
The present invention relates to silica gel technical fields, more specifically, it relates to a kind of antistatic silica gel.
Background technique
Using silica gel as the processing and fabricating product of main raw material(s), referred to as silica gel product.With the technological progress of silica gel industry,
The quality of domestic silica gel product has increases substantially, and currently, silica gel in China using very extensive, hold by quantity and kind
Continuous to increase, application field is constantly widened, and China has become the most potential market of silica gel product.
But it is more demanding to electrostatic under many workplaces, it is generally the case that existing silica gel product generally by
Polyethers filler is added in silica gel product to enhance the antistatic performance of silica gel, still, polyethers is easy to decompose at high temperature, is easy
Therefore the antistatic performance for influencing silica gel product still has improved space.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of antistatic silica gel, there is antistatic
The stable advantage of performance.
To achieve the above object, the present invention provides the following technical scheme that
A kind of antistatic silica gel, the component including following mass fraction:
80-100 parts of silicon rubber, the silicon rubber includes methyl silicone rubber, methyl vinyl silicone rubber and aminomethyl phenyl
One of vinylsiloxane rubber is a variety of；
1-2 parts of vulcanizing agent；
0.5-1 parts of antistatic agent, the antistatic agent is alkyl amino acid metal salt；
0.5-0.8 parts of zinc stearate.
By adopting the above technical scheme, by the way that alkyl amino acid metal salt is added as antistatic agent, be conducive to enhance silica gel
Antistatic performance so that silica gel is not easy to inhale ash, so that silica gel product more cleaning, beautiful in use, together
When make silica gel be more suitable for using in electrostatic environment, be conducive to expand silica gel use scope；Make by using zinc stearate
For release agent, advantageously reduce silica gel materials in die cavity with the adhesive force of mold so that silica gel is easier to demould, thus favorably
In raising production efficiency；Meanwhile the ester group on zinc stearate is easy to be anti-with the amino generation aminolysis on alkyl amino acid metal salt
It answers, generates amide groups, since the polarity of amide groups is stronger, there is stronger hydrogen bond association ability, thus amide groups has relatively by force
Stability, and amide groups have stronger heat-resisting ability, thus be conducive to improve antistatic agent high temperature resistance so that
The antistatic performance of silica gel is more stable；In addition, the ester group on zinc stearate occurs with the amino on alkyl amino acid metal salt
Aminolysis reaction also helps entangled to each other between molecule, is conducive to form reticular structure between molecule, to be conducive to enhance
The tensile strength of silica gel is conducive to extend the service life of silica gel so that silica gel is not easily susceptible to cracking.
The present invention is further arranged to: the vulcanizing agent is isocyanates.
By adopting the above technical scheme, by using isocyanates as vulcanizing agent, isocyanates is easy and alkyl amino acid
The active hydrogen of amino on metal salt reacts, be conducive to it is intermolecular entangled to each other to form reticular structure, thus favorably
The service life of silica gel is conducive to extend so that silica gel is not easily susceptible to cracking in the tensile strength of enhancing silica gel.
The present invention is further arranged to: further include the component of following mass fraction:
3-4 parts of polyimides.
By adopting the above technical scheme, be conducive to improve using the high temperature resistance of polyimides by the way that polyimides is added
The high temperature resistance of silica gel, so that the antistatic performance of silica gel under the high temperature conditions is more stable；Meanwhile having on polyimides
The extremely strong amide groups of polarity, the active hydrogen of the amino on amide groups are easy to react with isocyanates, meanwhile, amide groups is also
It is easy to form hydrogen bond with the amide groups that zinc stearate and alkyl amino acid reacting metal salt generate, to be conducive between molecule
It is entangled to each other to form reticular structure, and then be conducive to improve silica gel tensile strength be conducive to so that silica gel is not easily susceptible to cracking
Extend the service life of silica gel.
The present invention is further arranged to: further include the component of following mass fraction:
5-6 parts of vulcanization accelerator.
By adopting the above technical scheme, by the way that vulcanization accelerator, the advantageous sulfurization for promoting vulcanizing agent, so that vulcanization is added
Time shortens, and the dosage of vulcanizing agent is advantageously reduced, so that the physical property of silica gel improves.
The present invention is further arranged to: the vulcanization accelerator is zinc oxide.
By adopting the above technical scheme, by the way that zinc oxide is added as vulcanization accelerator, zinc oxide has very big surface area,
With good dispersibility and good adsorptivity, thus the vulcanization, activation and reinforcement anti-aging that may advantageously facilitate silica gel are made
With so that the tearing-resistant performance of silica gel and wear-resisting property improve.
The present invention is further arranged to: further include the component of following mass fraction:
4-5 parts of containing hydrogen silicone oil.
By adopting the above technical scheme, by be added containing hydrogen silicone oil, containing hydrogen silicone oil under the catalysis of alkyl amino acid metal salt,
It is easy crosslinking film forming, so that Silica Surface waterproof membrane easy to form, and then be conducive to improve the waterproof performance of silica gel, so that
Silica gel is not easy to be corroded, and is conducive to extend the service life of silica gel.
The present invention is further arranged to: further include the component of following mass fraction:
3-4 parts of diphenyl silanediol.
By adopting the above technical scheme, by the way that diphenyl silanediol is added as silica gel structure controlling agent, silicon is advantageously reduced
The structuring phenomenon of glue, so that the processing performance of silica gel improves；Meanwhile the stronger silicone hydroxyl containing polarized on silanol, silicone hydroxyl
It is easy to form hydrogen bond with amide groups, to be conducive to be crosslinked between molecule to form reticular structure mutually, so that the stretching of silica gel
Enhanced strength, and then it is conducive to extend the service life of silica gel.
The present invention is further arranged to: further include the component of following mass fraction:
40-50 parts of white carbon black.
By adopting the above technical scheme, by be added white carbon black be used as reinforcing agent, be conducive to enhancing silica gel tensile strength with
And compression strength, so that silica gel is not easily susceptible to cracking, to be conducive to extend the service life of silica gel；Meanwhile white carbon black is main
Ingredient is silica, and silica surface is easy water suction and forms the stronger silicone hydroxyl of polarity, and the silicone hydroxyl on white carbon black surface holds
Easily with the silicone hydroxyl and amide groups formation hydrogen bond on diphenyl silanediol, be conducive to be crosslinked mutually between molecule netted to be formed
Structure, and then be conducive to improve the tensile strength of silica gel, so that the service life of silica gel extends.
In conclusion the invention has the following advantages:
1. being conducive to the antistatic performance for enhancing silica gel by the way that alkyl amino acid metal salt is added as antistatic agent, making
Silica gel is obtained to be not easy to inhale ash, so that silica gel product more cleaning, beauty in use, while silica gel is more suitable for
It is used in electrostatic environment, is conducive to the use scope for expanding silica gel；
2. by using zinc stearate as release agent, advantageously reduce silica gel materials in die cavity with the attachment of mold
Power, so that silica gel is easier to demould, to be conducive to improve production efficiency；
3. the ester group on zinc stearate is easy that aminolysis reaction occurs with the amino on alkyl amino acid metal salt, amide is generated
Base has stronger hydrogen bond association ability since the polarity of amide groups is stronger, thus amide groups has stronger stability, and
Amide groups has stronger heat-resisting ability, to be conducive to improve the high temperature resistance of antistatic agent, so that preventing for silica gel is quiet
Electrical property is more stable；
4. the amino on ester group and alkyl amino acid metal salt on zinc stearate occurs aminolysis reaction and also helps molecule
Between it is entangled to each other, be conducive to form reticular structure between molecule, thus be conducive to enhance silica gel tensile strength so that silicon
Glue is not easily susceptible to cracking, and is conducive to extend the service life of silica gel.
Specific embodiment
With reference to embodiments, invention is further described in detail.
In following embodiment, vulcanizing agent uses the article No. of Guangzhou Tai Rong Chemical Co., Ltd. for the isocyanic acid of PM-200
Ester.
In following embodiment, zinc stearate uses the zinc stearate of the model PLB of vast and boundless million Chemical Co., Ltd.s in Guangzhou.
In following embodiment, polyimides uses Suzhou to hide the trade mark for joining plasticizing Co., Ltd as the liquid polyamides Asia of GY-2
Amine.
In following embodiment, vulcanization accelerator use the article No. of Shenzhen Zhu Hai Chemical Co., Ltd. for 07 zinc oxide.
In following embodiment, containing hydrogen silicone oil uses Chengdu Xiang along the hydrogeneous of the model xs-202D of organosilicon Co., Ltd
Silicone oil.
In following embodiment, diphenyl silanediol is using Hubei at the diphenyl silanediol of Sai Chuan Science and Technology Ltd..
In following embodiment, white carbon black uses the article No. of Henan Dong Sen chemical products Co., Ltd for the white carbon black of 451-9.
Embodiment 1
A kind of antistatic silica gel, the component including following mass fraction:
Silicon rubber 80kg；Vulcanizing agent 1kg；Antistatic agent 0.5kg；Zinc stearate 0.5kg.
In the present embodiment, silicon rubber uses methyl silicone rubber.
In the present embodiment, antistatic agent uses dodecylamino Sodium Dicarboxylic Acid.
Antistatic silica gel the preparation method is as follows:
(1) silicon rubber 80kg, antistatic agent 0.5kg, zinc stearate 0.5kg are added in kneader, in 160 DEG C of condition
Under, it stirs evenly to form mixture；
(2) after the mixture in step 1 is agglomerating, 80min is mediated, is discharged after filtering；
(3) using the sizing material after discharging in step (2) as base rubber, it is equal that addition vulcanizing agent 1kg, packet roller in packet roller machine are placed in
It is even, vulcanize 15min under conditions of 160 DEG C to get antistatic silica gel.
Embodiment 2
A kind of antistatic silica gel, the component including following mass fraction:
Silicon rubber 90kg；Vulcanizing agent 1.5kg；Antistatic agent 0.7kg；Zinc stearate 0.7kg.
In the present embodiment, silicon rubber uses methyl vinyl silicone rubber.
In the present embodiment, antistatic agent uses sodium dodecyl aminopropionitrile.
Antistatic silica gel the preparation method is as follows:
(1) silicon rubber 90kg, antistatic agent 0.7kg, zinc stearate 0.7kg are added in kneader, in 160 DEG C of condition
Under, it stirs evenly to form mixture；
(2) after the mixture in step 1 is agglomerating, 80min is mediated, is discharged after filtering；
(3) using the sizing material after discharging in step (2) as base rubber, addition vulcanizing agent 1.5kg, packet roller in packet roller machine are placed in
Uniformly, vulcanize 15min under conditions of 160 DEG C to get antistatic silica gel.
Embodiment 3
A kind of antistatic silica gel, the component including following mass fraction:
Silicon rubber 100kg；Vulcanizing agent 2kg；Antistatic agent 1kg；Zinc stearate 0.8kg.
In the present embodiment, silicon rubber uses methyl phenyl vinyl silicone rubber.
In the present embodiment, antistatic agent uses dodecylamino sodium acetate.
Antistatic silica gel the preparation method is as follows:
(1) silicon rubber 100kg, antistatic agent 1kg, zinc stearate 0.8kg are added in kneader, in 160 DEG C of condition
Under, it stirs evenly to form mixture；
(2) after the mixture in step 1 is agglomerating, 80min is mediated, is discharged after filtering；
(3) using the sizing material after discharging in step (2) as base rubber, it is equal that addition vulcanizing agent 2kg, packet roller in packet roller machine are placed in
It is even, vulcanize 15min under conditions of 160 DEG C to get antistatic silica gel.
Embodiment 4
A kind of antistatic silica gel, the component including following mass fraction:
Silicon rubber 90kg；Vulcanizing agent 1.5kg；Antistatic agent 0.7kg；Zinc stearate 0.7kg；Polyimides 3kg；Vulcanization promotees
Into agent 5kg；Containing hydrogen silicone oil 4kg；Diphenyl silanediol 3kg；White carbon black 40kg.
In the present embodiment, silicon rubber uses methyl silicone rubber.
In the present embodiment, antistatic agent uses dodecylamino Sodium Dicarboxylic Acid.
Antistatic silica gel the preparation method is as follows:
(1) in kneader be added silicon rubber 90kg, antistatic agent 0.7kg, zinc stearate 0.7kg, polyimides 3kg,
Containing hydrogen silicone oil 4kg, diphenyl silanediol 3kg, white carbon black 40kg stir evenly to form mixture under conditions of 160 DEG C；
(2) after the mixture in step 1 is agglomerating, 80min is mediated, is discharged after filtering；
(3) it using the sizing material after discharging in step (2) as base rubber, is placed in packet roller machine and vulcanizing agent 1.5kg, vulcanization is added
Promotor 5kg, packet roller is uniform, vulcanizes 15min under conditions of 160 DEG C to get antistatic silica gel.
Embodiment 5
A kind of antistatic silica gel, the component including following mass fraction:
Silicon rubber 90kg；Vulcanizing agent 1.5kg；Antistatic agent 0.7kg；Zinc stearate 0.7kg；Polyimides 3.5kg；Vulcanization
Promotor 5.5kg；Containing hydrogen silicone oil 4.5kg；Diphenyl silanediol 3.5kg；White carbon black 45kg.
In the present embodiment, silicon rubber uses methyl vinyl silicone rubber.
In the present embodiment, antistatic agent uses sodium dodecyl aminopropionitrile.
Antistatic silica gel the preparation method is as follows:
(1) silicon rubber 90kg, antistatic agent 0.7kg, zinc stearate 0.7kg, polyimides are added in kneader
3.5kg, containing hydrogen silicone oil 4.5kg, diphenyl silanediol 3.5kg, white carbon black 45kg stir evenly to be formed under conditions of 160 DEG C
Mixture；
(2) after the mixture in step 1 is agglomerating, 80min is mediated, is discharged after filtering；
(3) it using the sizing material after discharging in step (2) as base rubber, is placed in packet roller machine and vulcanizing agent 1.5kg, vulcanization is added
Promotor 5.5kg, packet roller is uniform, vulcanizes 15min under conditions of 160 DEG C to get antistatic silica gel.
Embodiment 6
A kind of antistatic silica gel, the component including following mass fraction:
Silicon rubber 90kg；Vulcanizing agent 1.5kg；Antistatic agent 0.7kg；Zinc stearate 0.7kg；Polyimides 4kg；Vulcanization promotees
Into agent 6kg；Containing hydrogen silicone oil 5kg；Diphenyl silanediol 4kg；White carbon black 50kg.
In the present embodiment, silicon rubber uses methyl phenyl vinyl silicone rubber.
In the present embodiment, antistatic agent uses dodecylamino sodium acetate.
Antistatic silica gel the preparation method is as follows:
(1) in kneader be added silicon rubber 90kg, antistatic agent 0.7kg, zinc stearate 0.7kg, polyimides 4kg,
Containing hydrogen silicone oil 5kg, diphenyl silanediol 4kg, white carbon black 50kg stir evenly to form mixture under conditions of 160 DEG C；
(2) after the mixture in step 1 is agglomerating, 80min is mediated, is discharged after filtering；
(3) it using the sizing material after discharging in step (2) as base rubber, is placed in packet roller machine and vulcanizing agent 1.5kg, vulcanization is added
Promotor 6kg, packet roller is uniform, vulcanizes 15min under conditions of 160 DEG C to get antistatic silica gel.
Comparative example 1
A kind of antistatic silica gel, the component including following mass fraction:
Silicon rubber 90kg；Vulcanizing agent 1.5kg；Antistatic agent 0.7kg；Zinc stearate 0.7kg.
In the present embodiment, silicon rubber uses methyl vinyl silicone rubber.
In the present embodiment, antistatic agent uses N- (3- dodecyloxy -2- hydroxypropyl) ethanol amine.
Antistatic silica gel the preparation method is as follows:
(1) silicon rubber 90kg, antistatic agent 0.7kg, zinc stearate 0.7kg are added in kneader, in 160 DEG C of condition
Under, it stirs evenly to form mixture；
(2) after the mixture in step 1 is agglomerating, 80min is mediated, is discharged after filtering；
(3) using the sizing material after discharging in step (2) as base rubber, addition vulcanizing agent 1.5kg, packet roller in packet roller machine are placed in
Uniformly, vulcanize 15min under conditions of 160 DEG C to get antistatic silica gel.
Comparative example 2
A kind of antistatic silica gel, the component including following mass fraction:
Silicon rubber 90kg；Vulcanizing agent 1.5kg；Zinc stearate 0.7kg.
In the present embodiment, silicon rubber uses methyl vinyl silicone rubber.
Antistatic silica gel the preparation method is as follows:
(1) silicon rubber 90kg, zinc stearate 0.7kg are added in kneader and stir evenly shape under conditions of 160 DEG C
At mixture；
(2) after the mixture in step 1 is agglomerating, 80min is mediated, is discharged after filtering；
(3) using the sizing material after discharging in step (2) as base rubber, addition vulcanizing agent 1.5kg, packet roller in packet roller machine are placed in
Uniformly, vulcanize 15min under conditions of 160 DEG C to get antistatic silica gel.
The detection data of each embodiment is shown in Table 1, and the detection data of each comparative example is shown in Table 2.
Experiment 1
Antistatic silicon is detected according to GB1410-89 " solid insulating material volume resistivity and surface resistivity test method "
The surface resistivity (Ω) of glue at normal temperature and the surface resistivity (Ω) at a temperature of 200 DEG C.
Table 1
Table 2
| Comparative example 1 | Comparative example 2 | |
| Resistivity at room temperature | 10000000 | 10000 |
| High-temperature resistivity | 1000000 | 1000 |
It can be obtained according to the data comparison of embodiment 1-3 in table 1 and comparative example 1 in table 2, be all made of alkyl in embodiment 1-3
Amino acid metal salt uses polyethers antistatic agent N- (3- dodecyloxy -2- hydroxyl third as antistatic agent in comparative example 1
Base) ethanol amine, and embodiment 1-3 is consistent with the resistivity at room temperature of comparative example 1, but the high-temperature resistivity in comparative example 1 is significantly low
In the high-temperature resistivity of embodiment 1-3, illustrate to be conducive to improve silica gel as antistatic agent by using metal alkyl salt
The heat-resisting quantity of antistatic performance, so that the antistatic performance of silica gel is more stable.By using metal alkyl salt as
Antistatic agent and stearic acid release agent zinc cooperate, and the ester group in zinc stearate is easy to occur with the amino in metal alkyl salt
Aminolysis reaction generates amide groups, since amide groups has stronger polarity, has stronger hydrogen bond association ability, thus amide
Base generally has stronger stability, and generally has preferable high temperature resistance, to be conducive to improve the resistance to of antistatic agent
High-temperature behavior, so that antistatic agent is not easy decomposition failure under the high temperature conditions, so that the antistatic performance of silica gel is more
Stablize.
It can be obtained according to the data comparison of embodiment 1-3 in table 1 and comparative example 2, the component ratio comparative example 2 in embodiment 1-3
In component increased antistatic agent newly, and the resistivity at room temperature in comparative example 2 is significantly less than embodiment 1-3's, and comparative example 2
The rate of descent of high-temperature resistivity is also much higher than embodiment 1-3's, illustrates to be conducive to the silica gel of enhancing by the way that antistatic agent is added
Antistatic performance so that silica gel is not easy to inhale ash, so that be conducive to silica gel product keeps beautiful, cleaning in use.
It can be obtained according to the data comparison of embodiment 1-3 in table 1 and embodiment 4-6, the component ratio embodiment 1- of embodiment 4-6
3 component has increased polyimides, vulcanization accelerator, containing hydrogen silicone oil, diphenyl silanediol and white carbon black newly, and embodiment 4-6
High-temperature resistivity and resistivity at room temperature it is almost unchanged, the high-temperature resistivity of embodiment 1-3 slightly decreases, and explanation passes through
Polyimides, vulcanization accelerator, containing hydrogen silicone oil, diphenyl silanediol and white carbon black is added, silica gel can improved to a certain degree
The high temperature resistance of antistatic performance, so that the antistatic performance of silica gel is more stable.By the way that polyimides is added, be conducive to mention
The high temperature resistance of high silica gel, so that silica gel antistatic performance is more stable under the high temperature conditions；Promoted by the way that vulcanization is added
Into agent, containing hydrogen silicone oil, diphenyl silanediol and white carbon black, be conducive to the physical property for enhancing silica gel, so that silica gel is more steady
It is fixed, to be conducive to improve the high temperature resistance of the antistatic agent in silica gel, so that the antistatic agent in silica gel is in hot conditions
Under it is more stable.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of antistatic silica gel, it is characterized in that: including the component of following mass fraction:
80-100 parts of silicon rubber, the silicon rubber includes methyl silicone rubber, methyl vinyl silicone rubber and methyl phenyl vinyl
One of base silicon rubber is a variety of；
1-2 parts of vulcanizing agent；
0.5-1 parts of antistatic agent, the antistatic agent is alkyl amino acid metal salt；
0.5-0.8 parts of zinc stearate.
2. antistatic silica gel according to claim 1, it is characterized in that: the vulcanizing agent is isocyanates.
3. antistatic silica gel according to claim 1 to 2, it is characterized in that: further including the component of following mass fraction:
3-4 parts of polyimides.
4. antistatic silica gel according to claim 1 to 2, it is characterized in that: further including the component of following mass fraction:
5-6 parts of vulcanization accelerator.
5. antistatic silica gel according to claim 4, it is characterized in that: the vulcanization accelerator is zinc oxide.
6. antistatic silica gel according to claim 1 to 2, it is characterized in that: further including the component of following mass fraction:
4-5 parts of containing hydrogen silicone oil.
7. antistatic silica gel according to claim 1 to 2, it is characterized in that: further including the component of following mass fraction:
3-4 parts of diphenyl silanediol.
8. antistatic silica gel according to claim 1 to 2, it is characterized in that: further including the component of following mass fraction:
40-50 parts of white carbon black.
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| CN110776749A (en) * | 2019-12-10 | 2020-02-11 | 江苏方时远略科技咨询有限公司 | Heat-conducting anti-static silica gel product and micro injection molding process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110776749A (en) * | 2019-12-10 | 2020-02-11 | 江苏方时远略科技咨询有限公司 | Heat-conducting anti-static silica gel product and micro injection molding process thereof |
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