CN114231037A - Liquid conductive silicone rubber and preparation method thereof - Google Patents
Liquid conductive silicone rubber and preparation method thereof Download PDFInfo
- Publication number
- CN114231037A CN114231037A CN202111320605.5A CN202111320605A CN114231037A CN 114231037 A CN114231037 A CN 114231037A CN 202111320605 A CN202111320605 A CN 202111320605A CN 114231037 A CN114231037 A CN 114231037A
- Authority
- CN
- China
- Prior art keywords
- portions
- silicone rubber
- silicone oil
- mixture
- liquid conductive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 28
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title description 9
- 229920002545 silicone oil Polymers 0.000 claims abstract description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000011231 conductive filler Substances 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 10
- 239000001257 hydrogen Substances 0.000 claims abstract description 10
- 239000003112 inhibitor Substances 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000006229 carbon black Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 7
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 claims description 6
- SCPWMSBAGXEGPW-UHFFFAOYSA-N dodecyl(trimethoxy)silane Chemical compound CCCCCCCCCCCC[Si](OC)(OC)OC SCPWMSBAGXEGPW-UHFFFAOYSA-N 0.000 claims description 4
- 150000002431 hydrogen Chemical class 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 3
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000003431 cross linking reagent Substances 0.000 abstract 1
- 239000012763 reinforcing filler Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000004944 Liquid Silicone Rubber Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 125000003698 tetramethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000002699 waste material Substances 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
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 liquid conductive silicone rubber which comprises the following raw materials in parts by weight: 20 to 30 portions of gas phase white carbon black, 90 to 110 portions of vinyl-terminated silicone oil, 37.4 to 50.8 portions of surface treating agent, 200 to 240 portions of conductive filler, 5 to 11 portions of hydrogen-containing silicone oil, 0.15 to 0.3 portion of inhibitor and 0.1 to 0.3 portion of catalyst. According to the invention, the vinyl-terminated silicone oil is used as a base adhesive, the hydrogen-containing silicone oil is used as a cross-linking agent, the fumed silica is used as a reinforcing filler, and the surface treating agent, the conductive filler, the catalyst and the inhibitor are added, so that the fumed silica can be modified by the surface treating agent, the compatibility among the fumed silica, the vinyl-terminated silicone oil and the conductive filler is good, and the components can be uniformly mixed, so that the obtained liquid conductive silicone rubber has good sealing property, and meets the performance requirements of the electromagnetic shielding material. Therefore, the liquid conductive silicone rubber composed by the formula can be used for preparing electromagnetic shielding materials.
Description
Technical Field
The invention relates to the technical field of silicone rubber preparation, in particular to liquid conductive silicone rubber and a preparation method thereof.
Background
Compared with the common mixing conductive silicone rubber, the liquid conductive silicone rubber has the advantage of simple and convenient preparation process, and can be divided into single-component and double-component liquid conductive silicone rubber from the aspect of additive type, when the double-component silicone rubber is used, the two components need to be mixed together in proportion, and are used immediately and cannot be recycled, so that waste is easily caused, the cost is increased, and the single-component liquid silicone rubber has simple dispensing equipment, is convenient to use and can be recycled in production, so that the single-component silicone rubber better meets the production requirements. However, the single-component silicone rubber still has the defect of poor sealing performance, and cannot meet the performance requirements of the electromagnetic shielding material.
Disclosure of Invention
In view of the problems in the prior art, the liquid conductive silicone rubber disclosed by the invention is characterized by comprising the following raw materials in parts by weight: 20 to 30 portions of gas phase white carbon black, 90 to 110 portions of vinyl-terminated silicone oil, 37.4 to 50.8 portions of surface treating agent, 200 to 240 portions of conductive filler, 5 to 11 portions of hydrogen-containing silicone oil, 0.15 to 0.3 portion of inhibitor and 0.1 to 0.3 portion of catalyst.
In a preferred embodiment of the present invention, the surface treatment agent includes one or more of gamma-glycidoxypropyltrimethoxysilane, hexamethyldisilazane, dodecyltrimethoxysilane, vinyltriethoxysilane, and tetramethyltetravinylsiloxane.
The invention discloses a preparation method of liquid conductive silicone rubber, which is characterized by comprising the following steps:
s1, weighing the raw materials according to the weight part ratio of the claim 1 for later use;
s2, adding hydrogen silicone oil into the vinyl-terminated silicone oil weighed in the step S1 to obtain a mixture A;
s3, adding fumed silica and a surface treating agent into the mixture A prepared in the step S2 after uniformly stirring to obtain a mixture B;
s4, adding a conductive filler, a catalyst and an inhibitor into the mixture A prepared in the step S3, and uniformly stirring to obtain a mixture C;
s5, cooling the mixture C prepared in the step S4 to obtain a finished product
In a preferred embodiment of the present invention, in the step S3, the temperature needs to be heated to 40 to 50 ℃ during the stirring process.
In a preferred embodiment of the present invention, the uniform stirring speed in the steps S3 and S4 is 80 to 120 r/min.
In a preferred embodiment of the present invention, the uniform stirring speed in the steps S3 and S4 is 80 to 120 r/min.
The invention has the beneficial effects that: according to the liquid conductive silicone rubber, the fumed silica is modified by the surface treating agent, so that the compatibility between the fumed silica and the colloid is increased, the fumed silica can be rapidly and uniformly dispersed in the colloid through high-speed stirring in a short time, and the production efficiency is greatly improved. The liquid conductive silicone rubber prepared by the preparation method has good conductivity and good sealing property, and can be used in the field of sealing of dispensing electromagnetic shielding rubber.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The liquid conductive silicone rubber comprises the following raw materials in parts by weight: 25 to 30 portions of gas phase white carbon black, 100 to 110 portions of vinyl-terminated silicone oil, 39 to 42.5 portions of surface treating agent, 220 to 230 portions of conductive filler, 8 to 10 portions of hydrogen-containing silicone oil, 0.19 to 0.22 portion of inhibitor and 0.15 to 0.25 portion of catalyst.
Wherein the surface treating agent comprises gamma-glycidoxypropyltrimethoxysilane and dodecyltrimethoxysilane.
The preparation method of the liquid conductive silicone rubber comprises the following steps:
the method comprises the following steps: weighing the raw materials according to the weight part ratio for later use;
step two: adding hydrogen silicone oil into the vinyl-terminated silicone oil weighed in the step one to obtain a mixture A;
step three: adding the fumed silica and the surface treating agent into the mixture A prepared in the second step after uniformly stirring to obtain a mixture B;
step four: adding a conductive filler, a catalyst and an inhibitor into the mixture A prepared in the third step, and uniformly stirring to obtain a mixture C;
step five: and cooling the mixture C prepared in the step S4 to obtain a finished product.
Specifically, in the third step, the temperature needs to be heated to 40-50 ℃ in the stirring process.
Specifically, the uniform stirring speed in the third step and the fourth step is 100 r/min.
Specifically, the cooling temperature in the fifth step is 25-30 ℃.
Example 2
The liquid conductive silicone rubber comprises the following raw materials in parts by weight: 20 to 26 portions of gas phase white carbon black, 90 to 100 portions of vinyl-terminated silicone oil, 40.5 to 48.8 portions of surface treating agent, 200 to 220 portions of conductive filler, 6 to 8 portions of hydrogen-containing silicone oil, 0.25 to 0.29 portion of inhibitor and 0.18 to 0.21 portion of catalyst.
Wherein the surface treating agent comprises hexamethyldisilazane, dodecyl trimethoxy silane and tetramethyl tetravinyl siloxane.
The preparation method of the liquid conductive silicone rubber comprises the following steps:
the method comprises the following steps: weighing the raw materials according to the weight part ratio for later use;
step two: adding hydrogen silicone oil into the vinyl-terminated silicone oil weighed in the step one to obtain a mixture A;
step three: adding the fumed silica and the surface treating agent into the mixture A prepared in the second step after uniformly stirring to obtain a mixture B;
step four: adding a conductive filler, a catalyst and an inhibitor into the mixture A prepared in the third step, and uniformly stirring to obtain a mixture C;
step five: and cooling the mixture C prepared in the step S4 to obtain a finished product.
Specifically, in the third step, the temperature needs to be heated to 40-43 ℃ in the stirring process.
Specifically, the uniform stirring speed in the third step and the fourth step is 110 r/min.
Specifically, the cooling temperature in the fifth step is 26-30 ℃.
Parts not described in detail herein are prior art.
Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The liquid conductive silicone rubber is characterized by comprising the following raw materials in parts by weight: 20 to 30 portions of gas phase white carbon black, 90 to 110 portions of vinyl-terminated silicone oil, 37.4 to 50.8 portions of surface treating agent, 200 to 240 portions of conductive filler, 5 to 11 portions of hydrogen-containing silicone oil, 0.15 to 0.3 portion of inhibitor and 0.1 to 0.3 portion of catalyst.
2. The liquid conductive silicone rubber according to claim 1, wherein: the surface treating agent comprises one or more of gamma-glycidoxypropyltrimethoxysilane, hexamethyldisilazane, dodecyltrimethoxysilane, vinyltriethoxysilane and tetramethyltetravinylsiloxane.
3. The method for preparing a liquid conductive silicone rubber according to claim 1 or 2, comprising the steps of:
s1, weighing the raw materials according to the weight part ratio of the claim 1 for later use;
s2, adding hydrogen silicone oil into the vinyl-terminated silicone oil weighed in the step S1 to obtain a mixture A;
s3, adding fumed silica and a surface treating agent into the mixture A prepared in the step S2 after uniformly stirring to obtain a mixture B;
s4, adding a conductive filler, a catalyst and an inhibitor into the mixture A prepared in the step S3, and uniformly stirring to obtain a mixture C;
s5, cooling the mixture C prepared in the step S4 to obtain a finished product.
4. The method for preparing a liquid conductive silicone rubber according to claim 3, characterized in that: in the step S3, the temperature needs to be heated to 40-50 ℃ in the stirring process.
5. The method for preparing a liquid conductive silicone rubber according to claim 3, characterized in that: the uniform stirring speed in the steps S3 and S4 is 80-120 r/min.
6. The method for preparing a liquid conductive silicone rubber according to claim 3, characterized in that: the cooling temperature in the step S5 is 20-30 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111320605.5A CN114231037A (en) | 2021-11-09 | 2021-11-09 | Liquid conductive silicone rubber and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111320605.5A CN114231037A (en) | 2021-11-09 | 2021-11-09 | Liquid conductive silicone rubber and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114231037A true CN114231037A (en) | 2022-03-25 |
Family
ID=80748836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111320605.5A Pending CN114231037A (en) | 2021-11-09 | 2021-11-09 | Liquid conductive silicone rubber and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114231037A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864174A (en) * | 2010-06-22 | 2010-10-20 | 吴江朗科化纤有限公司 | Method for preparing liquid silicon rubber |
| CN103030976A (en) * | 2012-12-27 | 2013-04-10 | 成都拓利化工实业有限公司 | Single-component heat-curing liquid silicone rubber and preparation method thereof |
| CN110003664A (en) * | 2019-04-15 | 2019-07-12 | 深圳市威富通讯技术有限公司 | Liquid conductive silastic and its preparation method and application |
| CN112048184A (en) * | 2020-09-15 | 2020-12-08 | 沅陵县成瑞祥粉体材料科技有限公司 | Low-temperature-resistant mixing silicone rubber |
-
2021
- 2021-11-09 CN CN202111320605.5A patent/CN114231037A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864174A (en) * | 2010-06-22 | 2010-10-20 | 吴江朗科化纤有限公司 | Method for preparing liquid silicon rubber |
| CN103030976A (en) * | 2012-12-27 | 2013-04-10 | 成都拓利化工实业有限公司 | Single-component heat-curing liquid silicone rubber and preparation method thereof |
| CN110003664A (en) * | 2019-04-15 | 2019-07-12 | 深圳市威富通讯技术有限公司 | Liquid conductive silastic and its preparation method and application |
| CN112048184A (en) * | 2020-09-15 | 2020-12-08 | 沅陵县成瑞祥粉体材料科技有限公司 | Low-temperature-resistant mixing silicone rubber |
Non-Patent Citations (1)
| Title |
|---|
| 肖建斌，等: "导电硅橡胶配方的优化设计", 《特种橡胶制品》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104877138B (en) | A kind of silicones with adhesive property and preparation method thereof | |
| TWI711642B (en) | Epoxy modified polysiloxane resin and its manufacturing method, curable composition and electronic part | |
| CN111154453B (en) | Heat-resistant single-component addition type organic silicon adhesive and preparation method thereof | |
| CN107189445A (en) | One kind is used for highly conductive liquid silicon rubber composition of injection moulding and preparation method thereof | |
| WO2018121048A1 (en) | Heat-resistant packaging adhesive for high-power led and manufacturing method thereof | |
| CN107513367B (en) | Dealcoholized storage-resistant RTV electronic coating adhesive and preparation method thereof | |
| DE60124128D1 (en) | PROCESS FOR PREPARING ORGANIC SILICATE POLYMER | |
| CN104559915B (en) | Single-component addition type silicone rubber sealant and preparation method thereof | |
| CN114231037A (en) | Liquid conductive silicone rubber and preparation method thereof | |
| CN109628059A (en) | A kind of stainless steel silicone sealant and preparation method thereof | |
| CN106867024B (en) | A kind of Abietyl modified organosilane cross-linking agent of dealcoholized type room temperature vulcanized silicone rubber and preparation method thereof | |
| JPS58108220A (en) | Epoxy resin composition for encapsulation of semiconductor | |
| CN110330654B (en) | Methyl vinyl silicone rubber and application thereof | |
| CN112457808A (en) | Low-warpage high-adhesion liquid mold sealing adhesive for gallium nitride power device and preparation method | |
| CN114958007A (en) | Liquid silicone rubber and preparation method thereof | |
| JPH11124487A (en) | Cyanic acid ester-maleimide liquid resin composition and sealed semiconductor device | |
| CN107236503A (en) | A kind of LED casting glues and preparation method thereof | |
| JPH09216933A (en) | Epoxy resin composition and sealed semiconductor device | |
| WO2018121047A1 (en) | Nanoscale electronic chip packaging material and preparation method therefor | |
| JPH0386725A (en) | Production of insulator and production of semiconductor device | |
| JPS59197421A (en) | Curable epoxy resin composition | |
| CN106317882A (en) | High-heat-conductivity silicone rubber thermal interface material containing magnetic metal fiber for LED and preparation method | |
| CN113462163B (en) | Dealcoholized high-strength transparent flowing silicone rubber and preparation method thereof | |
| CN114605961B (en) | Bi-component sealant and preparation method and application thereof | |
| CN110922599B (en) | Bisphenol S hybrid silicon resin and synthetic method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220325 |
|
| RJ01 | Rejection of invention patent application after publication |