CN114874625A - High-temperature-resistant high-purity organic silica gel material - Google Patents
High-temperature-resistant high-purity organic silica gel material Download PDFInfo
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- CN114874625A CN114874625A CN202210600045.7A CN202210600045A CN114874625A CN 114874625 A CN114874625 A CN 114874625A CN 202210600045 A CN202210600045 A CN 202210600045A CN 114874625 A CN114874625 A CN 114874625A
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- 239000000463 material Substances 0.000 title claims abstract description 46
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000000741 silica gel Substances 0.000 title claims abstract description 19
- 229910002027 silica gel Inorganic materials 0.000 title claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 58
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 45
- 239000010703 silicon Substances 0.000 claims abstract description 45
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 22
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 17
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 16
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 16
- 229920001194 natural rubber Polymers 0.000 claims abstract description 16
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 15
- 239000003054 catalyst Substances 0.000 claims abstract description 15
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 14
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 14
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910000077 silane Inorganic materials 0.000 claims abstract description 13
- 239000004642 Polyimide Substances 0.000 claims abstract description 12
- 229920001721 polyimide Polymers 0.000 claims abstract description 12
- 229920000642 polymer Polymers 0.000 claims abstract description 11
- 229920005990 polystyrene resin Polymers 0.000 claims abstract description 11
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 10
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 10
- 229920013636 polyphenyl ether polymer Polymers 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 42
- 239000000203 mixture Substances 0.000 claims description 32
- 239000011265 semifinished product Substances 0.000 claims description 22
- 238000002360 preparation method Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 235000012239 silicon dioxide Nutrition 0.000 claims description 8
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical group [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 8
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 7
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 7
- 229920001955 polyphenylene ether Polymers 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 239000005046 Chlorosilane Substances 0.000 claims description 4
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 claims description 4
- 239000005055 methyl trichlorosilane Substances 0.000 claims description 4
- JLUFWMXJHAVVNN-UHFFFAOYSA-N methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 claims description 4
- GQIUQDDJKHLHTB-UHFFFAOYSA-N trichloro(ethenyl)silane Chemical compound Cl[Si](Cl)(Cl)C=C GQIUQDDJKHLHTB-UHFFFAOYSA-N 0.000 claims description 4
- ZOYFEXPFPVDYIS-UHFFFAOYSA-N trichloro(ethyl)silane Chemical compound CC[Si](Cl)(Cl)Cl ZOYFEXPFPVDYIS-UHFFFAOYSA-N 0.000 claims description 4
- 239000005050 vinyl trichlorosilane Substances 0.000 claims description 4
- 125000003277 amino group Chemical group 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 125000005188 oxoalkyl group Chemical group 0.000 claims description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 3
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 5
- 239000002253 acid Substances 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 5
- 239000006260 foam Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 229920002545 silicone oil Polymers 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229910002808 Si–O–Si Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-temperature-resistant high-purity organic silica gel material which comprises the following raw materials in parts by weight: 30% of silane, 15% of cross-linking agent, 10% of catalyst, 5% of silane coupling agent, 5% of defoaming agent, 25% of filler and 10% of reinforcing agent; according to the invention, the filler is arranged, the natural rubber, the natural latex and the polyimide polymer in the filler are used for modification, so that the integral extensibility of the organic silicon can be changed, the extensibility of the organic silicon is increased, the wear resistance of the organic silicon can be improved by using the polytetrafluoroethylene resin and the polyphenyl ether resin in the filler, the excellent lubrication and atmospheric aging resistance of the polytetrafluoroethylene resin can be improved, the aging degree of the organic silicon in long-term use can be improved by matching with the polyphenyl ether resin, the wear resistance of the organic silicon can be improved according to the change of the environment, and the stretchability, the wear resistance and the corrosion resistance of the organic silicon can be improved by preventing the polystyrene resin in the filler from being corroded by strong acid or strong base.
Description
Technical Field
The invention relates to the technical field of organic silica gel materials, in particular to a high-temperature-resistant high-purity organic silica gel material.
Background
The organic silicon is a high molecular elastomer with inorganic and organic properties, the main chain of the molecule is formed by alternately connecting silicon atoms and oxygen atoms (-Si-O-Si), and the side chain is a hydrocarbon or substituted hydrocarbon organic group connected with the silicon atoms and can be methyl, vinyl or other groups. The organosilicon material is widely applied to the industries of electronics, electrics, construction, machinery, metallurgy, automobiles, chemical engineering, textile, medical treatment and the like;
although the prior organosilicon material has high and low temperature resistance in application, after being cured, the wear resistance of the organosilicon tends to decline, and an elastic colloid is formed after curing, so that not only an aging condition but also a fracture phenomenon can occur in a long-term wear process;
and after the curing, the integral hardness of the organic silicon is also enhanced, the organic silicon is not easy to replace in application, the tensile strength is limited, and the phenomenon of fracture can also occur in forced stretching.
Therefore, a high-temperature-resistant high-purity organic silica gel material is provided to solve the problem.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant high-purity organic silicon rubber material, which solves the problems that the wear resistance is reduced and the hardness is enhanced after the organic silicon is cured at present.
In order to achieve the purpose, the invention provides the following technical scheme: a high-temperature-resistant high-purity organic silica gel material comprises the following raw materials in parts by weight:
30% of silane, 15% of cross-linking agent, 10% of catalyst, 5% of silane coupling agent, 5% of defoaming agent, 25% of filler and 10% of reinforcing agent.
Preferably, the silane is one of methyltrichlorosilane, ethyltrichlorosilane, vinyltrichlorosilane, and native chlorosilane.
Preferably, the silane coupling agent is one or more of a silicon alkoxide group, an oxoalkyl group, an amino group and a phenyl group.
Preferably, the catalyst is tetramethylammonium hydroxide.
Preferably, the defoaming agent comprises polydimethylsiloxane and silicon dioxide.
Preferably, the filler includes natural rubber, natural latex, polyimide polymer, polytetrafluoroethylene resin, polyphenylene ether resin, and polystyrene resin.
A high-temperature-resistant high-purity organic silica gel material comprises the following steps:
step 1: preparing raw materials: preparing required materials according to the proportion of 30% of silane, 15% of cross-linking agent, 10% of catalyst, 5% of silane coupling agent, 5% of defoaming agent, 25% of filler and 10% of reinforcing agent;
step 2: preparing an organosilicon semi-finished product mixture and a filler semi-finished product mixture: mixing silane and a reinforcing agent for reaction to obtain an organic silicon semi-finished product mixture, storing for later use, mixing a polyimide polymer, polytetrafluoroethylene resin, polyphenyl ether resin and polystyrene resin in the filler to obtain a filler semi-finished product mixture, and storing for later use;
and step 3: preparing modified filler: mixing and modifying the obtained semi-finished filler mixture, natural rubber and natural latex to obtain a finished filler;
and 4, step 4: completing the preparation: mixing the semi-finished organosilicon mixture with the finished filler, adding the cross-linking agent, the catalyst, the silane coupling agent and the defoaming agent, uniformly mixing, and keeping for 4 hours in an environment with the vacuum degree of less than 0.9MP and the temperature of 160 ℃ to obtain the organosilicon material.
Preferably, in step 1, after the material is prepared, the material is subjected to a second comparison to ensure that the material has no errors.
Preferably, in step 3, the preparation temperature of the organosilicon semi-finished product mixture and the filler semi-finished product mixture is 160-180 ℃, and the preparation vacuum degree is less than 0.9 MP.
Preferably, in step 3, the modified filler is prepared by ensuring that the filler semi-finished mixture and the natural rubber are completely mixed with the natural latex, and the environment temperature of the mixing process is 160 ℃, and the vacuum degree is less than 0.9MP in a vacuum state.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the filler is added into the organic silicon, and the natural rubber, the natural latex and the polyimide polymer in the filler are modified to change the integral extensibility of the organic silicon and increase the extensibility of the organic silicon, so that the difficulty in replacing the organic silicon in application can be reduced, and the phenomenon that the organic silicon is fractured when being stretched can be effectively avoided;
the filler is added into the organic silicon, the polytetrafluoroethylene resin and the polyphenyl ether resin in the filler are utilized, the wear resistance of the organic silicon can be improved, the good lubrication and atmospheric aging resistance of the polytetrafluoroethylene resin can improve the aging degree of the organic silicon in long-term use, the wear resistance of the organic silicon can be improved according to the change of the environment by matching with the polyphenyl ether resin, and the wear resistance of the organic silicon can be effectively improved, so that the durability of the organic silicon can be enhanced, and the service life of the organic silicon is longer;
finally, the corrosion resistance of the whole organic silicon can be improved by preventing the polystyrene resin in the filler from being corroded by strong acid or strong alkali.
Detailed Description
The present invention will now be described in more detail by way of examples, which are given by way of illustration only and are not intended to limit the scope of the present invention in any way.
In one aspect of the present invention, the present invention provides a technical solution: a high-temperature-resistant high-purity organic silica gel material comprises the following raw materials in parts by weight:
30% of silane, 15% of cross-linking agent, 10% of catalyst, 5% of silane coupling agent, 5% of defoaming agent, 25% of filler and 10% of reinforcing agent.
According to the embodiment of the invention, the silane is one of methyltrichlorosilane, ethyltrichlorosilane, vinyltrichlorosilane and the native chlorosilane, and according to the embodiment of the invention, the methyltrichlorosilane, the ethyltrichlorosilane, the vinyltrichlorosilane and the native chlorosilane are the common binders for preparing organosilicon, and no matter which one is selected for preparation, the organosilicon material can be prepared.
According to the embodiment of the invention, the silane coupling agent is one or more of alkoxy silicon group, oxoalkyl group, amino group and phenyl group, according to the embodiment of the invention, the silane coupling agent is used as a tackifier, so that the adhesion among all materials can be effectively improved, the stability of the whole cost of the organic silicon is enhanced, and the silane coupling agent can be used for improving the interface between inorganic matters and organic matters in the organic silicon, so that the performance of the material is improved, such as the physical property, the electrical property, the thermal property, the optical property and the like of the material.
According to the embodiment of the invention, the catalyst is tetramethylammonium hydroxide, and according to the embodiment of the invention, the tetramethylammonium hydroxide has strong basicity, can be used as a catalyst for dimethyl silicone oil, benzyl silicone oil, silicone diffusion pump oil, solvent-free silicon molding compound, silicone resin silicone rubber and the like in the aspect of organosilicon, and can be used as a catalyst for organosilicon.
According to the embodiment of the invention, the defoaming agent comprises polydimethylsiloxane and silicon dioxide, and according to the embodiment of the invention, the defoaming agent is formed by properly mixing two main components of polydimethylsiloxane and silicon dioxide, the defoaming agent using polydimethylsiloxane as a base material is an ideal defoaming agent in a defoaming system, the defoaming agent is insoluble in water and difficult to emulsify, the polydimethylsiloxane has lower surface performance than carbon chain hydrocarbon, the foam inhibition performance of the polydimethylsiloxane is poor and slow, the defoaming effect is enhanced by silicon dioxide particles, the silicon dioxide particles are brought to an air-water interface of foam by silicone oil and enter a foam liquid film, because of the hydrophobicity of the silicon dioxide particles, the contact angle between the silicon dioxide particles and foaming liquid drops of a surfactant is more than 90 degrees, thereby forcing the foaming liquid to be discharged from the surface of the solid hydrophobic particles, leading the local quick liquid discharge of the foam to cause the rupture, and generating good defoaming effect.
According to the embodiment of the invention, the filler comprises natural rubber, natural latex, polyimide polymer, polytetrafluoroethylene resin, polyphenylene ether resin and polystyrene resin, according to the embodiment of the invention, after the natural rubber, the natural latex, the polyimide polymer, the polytetrafluoroethylene resin, the polyphenylene ether resin and the polystyrene resin are modified, a mixture with high strength, high tensile strength and high wear resistance can be obtained, the natural rubber, the natural latex and the polyimide polymer have good tensile property, the bending strength of the polyimide can reach 345MPa, the bending modulus can reach 20GPa, the toughness of the organic silicon can be further improved by matching the good elasticity of the natural rubber and the natural latex, and the ageing resistance and the wear resistance of the polytetrafluoroethylene resin and the polyphenylene ether resin can be fundamentally enhanced, although the final polystyrene resin has the disadvantage of hardness, the improvement of natural rubber and natural latex can reduce the hardening strength, thereby reducing the disadvantage and retaining the advantage of being not corroded by strong acid or strong alkali
Method for preparing
In a second aspect of the invention, the invention provides a method of preparing the silicone material described above, the method comprising: preparing raw materials, preparing required materials according to the proportion of 30% of silane, 15% of cross-linking agent, 10% of catalyst, 5% of silane coupling agent, 5% of defoaming agent, 25% of filler and 10% of reinforcing agent, preparing an organosilicon semi-finished product mixture and a filler semi-finished product mixture, carrying out mixing reaction on silane and reinforcing agent to obtain an organosilicon semi-finished product mixture, storing for later use, mixing polyimide polymer, polytetrafluoroethylene resin, polyphenylene oxide resin and polystyrene resin in the filler to obtain a filler semi-finished product mixture, storing for later use, preparing modified filler, mixing and modifying the obtained filler semi-finished product mixture, natural rubber and natural latex to obtain finished filler, finally completing preparation, mixing the organosilicon semi-finished product mixture and the finished filler, adding the cross-linking agent, the catalyst, the silane coupling agent and the defoaming agent, and uniformly mixing, after being mixed evenly, the mixture is kept for 4 hours under the environment that the vacuum degree is less than 0.9MP and the temperature is 160 ℃, and then the organosilicon material is obtained.
The preparation method comprises the steps of firstly preparing raw materials for ensuring that the materials are not lacked and facilitating subsequent preparation operation, then preparing an organic silicon semi-finished product mixture and a filler semi-finished product mixture, and preparing a modified filler, wherein the preparation method is used for achieving the effect which can be achieved after the materials are originally mixed.
The filler is added into the organic silicon, and the natural rubber, the natural latex and the polyimide polymer in the filler are modified to change the integral extensibility of the organic silicon and increase the extensibility of the organic silicon, so that the difficulty in replacing the organic silicon in application can be reduced, and the phenomenon that the organic silicon is fractured when being stretched can be effectively avoided; the filler is added into the organic silicon, the polytetrafluoroethylene resin and the polyphenyl ether resin in the filler are utilized, the wear resistance of the organic silicon can be improved, the good lubrication and atmospheric aging resistance of the polytetrafluoroethylene resin can improve the aging degree of the organic silicon in long-term use, the wear resistance of the organic silicon can be improved according to the change of the environment by matching with the polyphenyl ether resin, and the wear resistance of the organic silicon can be effectively improved, so that the durability of the organic silicon can be enhanced, and the service life of the organic silicon is longer; finally, the corrosion resistance of the whole organic silicon can be improved by preventing the polystyrene resin in the filler from being corroded by strong acid or strong alkali.
According to the embodiment of the invention, the material is prepared and then is subjected to secondary comparison to ensure that the material has no error.
According to the embodiment of the invention, the preparation temperature of the organic silicon semi-finished product mixture and the filler semi-finished product mixture is 160-.
According to the embodiment of the invention, the preparation of the modified filler must ensure that the semi-finished filler mixture and the natural rubber are completely mixed with the natural latex, and the environment temperature of the mixing process is 160 ℃, and the vacuum degree is less than 0.9MP when the mixing process is also carried out in a vacuum state. According to the embodiment of the invention, the modified filler is prepared at the ambient temperature of 160 ℃, so that the situation that the preparation progress needs to be slowed down by secondary heating in the later period of solidification can be avoided, and in addition, the modified filler is prepared in a vacuum state, so that the oxidation phenomenon of the material can be avoided, and the material can be kept in an original state after being mixed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A high-temperature-resistant high-purity organic silica gel material is characterized in that: the raw materials are as follows:
30% of silane, 15% of cross-linking agent, 10% of catalyst, 5% of silane coupling agent, 5% of defoaming agent, 25% of filler and 10% of reinforcing agent.
2. The high-temperature-resistant high-purity organic silica gel material as claimed in claim 1, characterized in that: the silane is one of methyltrichlorosilane, ethyltrichlorosilane, vinyltrichlorosilane and the local chlorosilane.
3. The high-temperature-resistant high-purity organic silica gel material as claimed in claim 1, characterized in that: the silane coupling agent is one or more of alkoxy silicon group, oxo alkyl group, amino group and phenyl group.
4. The high-temperature-resistant high-purity organic silica gel material as claimed in claim 1, characterized in that: the catalyst is tetramethyl ammonium hydroxide.
5. The high-temperature-resistant high-purity organic silica gel material as claimed in claim 1, characterized in that: the anti-foaming agent comprises polydimethylsiloxane and silicon dioxide.
6. The high-temperature-resistant high-purity organic silica gel material as claimed in claim 1, characterized in that: the filler includes natural rubber, natural latex, polyimide polymer, polytetrafluoroethylene resin, polyphenylene ether resin, and polystyrene resin.
7. The preparation method of the high-temperature-resistant high-purity organic silica gel material according to any one of claims 1 to 6 is characterized in that: the method comprises the following steps:
step 1: preparing raw materials: preparing required materials according to the proportion of 30% of silane, 15% of cross-linking agent, 10% of catalyst, 5% of silane coupling agent, 5% of defoaming agent, 25% of filler and 10% of reinforcing agent;
step 2: preparing an organosilicon semi-finished product mixture and a filler semi-finished product mixture: mixing silane and a reinforcing agent for reaction to obtain an organic silicon semi-finished product mixture, storing for later use, mixing a polyimide polymer, polytetrafluoroethylene resin, polyphenyl ether resin and polystyrene resin in the filler to obtain a filler semi-finished product mixture, and storing for later use;
and step 3: preparing modified filler: mixing and modifying the obtained semi-finished filler mixture, natural rubber and natural latex to obtain a finished filler;
and 4, step 4: completing the preparation: mixing the semi-finished organosilicon mixture with the finished filler, adding the cross-linking agent, the catalyst, the silane coupling agent and the defoaming agent, uniformly mixing, and keeping for 4 hours in an environment with the vacuum degree of less than 0.9MP and the temperature of 160 ℃ to obtain the organosilicon material.
8. The high-temperature-resistant high-purity organic silica gel material as claimed in claim 6, wherein: in step 1, after the material is prepared, the material is compared for the second time, so that no error exists in the material.
9. The high-temperature-resistant high-purity organic silica gel material as claimed in claim 6, wherein: in step 3, the preparation temperature of the organosilicon semi-finished product mixture and the filler semi-finished product mixture is 160-180 ℃, and the preparation vacuum degree is less than 0.9 MP.
10. The high-temperature-resistant high-purity organic silica gel material as claimed in claim 6, wherein: in step 3, the preparation of the modified filler must ensure that the semi-finished filler mixture, the natural rubber and the natural latex are completely mixed, the environment temperature in the mixing process is 160 ℃, and the vacuum degree is less than 0.9MP when the mixture is in a vacuum state.
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| CN109880374A (en) * | 2019-02-28 | 2019-06-14 | 国网河南省电力公司新野县供电公司 | A kind of high-temperature-resisting silicon rubber material and preparation method thereof |
| CN110511570A (en) * | 2019-09-19 | 2019-11-29 | 安徽立信橡胶科技有限公司 | A kind of high temperature resistant and radiation hardness silastic material |
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- 2022-05-30 CN CN202210600045.7A patent/CN114874625A/en active Pending
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