CN102898999A - Sealant for electrical heating tubes - Google Patents
Sealant for electrical heating tubes Download PDFInfo
- Publication number
- CN102898999A CN102898999A CN201210436051XA CN201210436051A CN102898999A CN 102898999 A CN102898999 A CN 102898999A CN 201210436051X A CN201210436051X A CN 201210436051XA CN 201210436051 A CN201210436051 A CN 201210436051A CN 102898999 A CN102898999 A CN 102898999A
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- China
- Prior art keywords
- parts
- pipe fitting
- electrically heated
- sealant
- heated pipe
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- 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.)
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Abstract
The invention discloses sealant for electrical heating tubes. The sealant comprises the following components in part by weight: 40 to 75 parts of vinyl silicone oil, 0.5 to 5 parts of hydrogen-containing silicone oil, 3 to 18 parts of epoxy organic silicon resin, 12 to 35 parts of heat conducting padding, 1 to 5 parts of fumed silica, 0.01 to 0.1 part of chloroplatinic acid catalyst, and 0.01 to 0.1 part of acetenyl cyclohexanol. The sealant has the advantages that the toughness and the high-temperature resistance of the sealant are obviously improved, the sealant is particularly applicable to the sealing of the electrical heating tubes, good sealing performance is ensured for long-term use, the performance of the electrical heating tubes is improved, and the service life of the electrical heating tubes is prolonged. After the sealant is used for sealing the electrical heating tubes, the water-resisting pressure of a gum layer reaches 1.6 MPa, the cold insulation resistance reaches 5*10<9> omega, the working hot insulation resistance reaches 10<8> omega, the insulation dielectric strength reaches 2KV/min, a cold leakage current and a leakage current after a water pressure and sealing test are less than 0.5mA, and the normal service life is more than 10,000 hours.
Description
Technical field
The present invention relates to a kind of seal gum, particularly a kind of seal gum for the electrically heated pipe fitting.
Background technology
The electrically heated pipe fitting opening part of the parts such as electric heater need to carry out encapsulation process, with resistance wire and the heat conductive filler of protection metal tube inside, guarantees stopping property and the conductivity of electrically heated pipe fitting.Usually adopt the organic silica gel sealing, but be under the condition of high temperature during owing to the work of electrically heated pipe fitting, because the high thermal resistance of organic silica gel is unstable, the organic silica gel that if things go on like this solidifies can become fragile, easy to crack, cause electrically heated pipe fitting bad seals, inefficacy, thereby affect its performance, work-ing life.
Summary of the invention
Goal of the invention: for the problems referred to above, the purpose of this invention is to provide a kind of seal gum that is specifically designed to the electrically heated pipe fitting, have good toughness, resistance to elevated temperatures, adapt to sealing demand and the use state of electrically heated pipe fitting.
Technical scheme: a kind of seal gum for the electrically heated pipe fitting, it comprises following component also by weight ratio:
40～75 parts of vinyl silicone oils
0.5～5 part of containing hydrogen silicone oil
3～18 parts of epoxy silicone resins
12～35 parts of heat conductive fillers
1～5 part of aerosil
0.01～0.1 part of chloroplatinic acid catalyst
0.01～0.1 part of ethynylcyclohexanol.
Best, described vinyl silicone oil is 50～70 parts.
Best, described containing hydrogen silicone oil is 1～3 part.
Best, described epoxy silicone resin is 5～15 parts.
Best, described heat conductive filler is 15～30 parts.
Best, described aerosil is 2～4 parts.
Best, described chloroplatinic acid catalyst is 0.03～0.08 part, described ethynylcyclohexanol is 0.03～0.08 part.
The viscosity of described vinyl silicone oil is 500～20000mPas.
Described containing hydrogen silicone oil contain hydrogen number at 0.3～0.8%wt.
Described heat conductive filler is mica powder or silica powder, and its particle size values is 1000 orders.
Beneficial effect: compared with prior art, advantage of the present invention is that toughness and the resistance to elevated temperatures of seal gum significantly improves, and is specially adapted to the sealing to the electrically heated pipe fitting, guarantees the stopping property of life-time service, improves the performance and used life of electrically heated pipe fitting.After using the sealing glue sealed electric heating tube mouth of pipe, the water pressure resistance of glue-line can reach 1.6MPa, and cold insulation resistance reaches 5*10
9Ω, the work hot insulation resistance reaches 10
8Ω, dielectric strength reaches 2KV/min, and Leakage Current is less than 0.5mA after cold conditions Leakage Current and hydraulic pressure and the seal test, and normal service life was above 10000 hours.
Embodiment
Below in conjunction with specific embodiment, further illustrate the present invention, should understand these embodiment only is used for explanation the present invention and is not used in and limits the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
Embodiment 1: a kind of seal gum for the electrically heated pipe fitting, it comprises vinyl silicone oil 60g, containing hydrogen silicone oil 3g, epoxy silicone resin 10g, 1000 order mica powder 22g, aerosil 3.5g, chloroplatinic acid catalyst 0.04g, ethynylcyclohexanol 0.04g.After each component weighing, high speed dispersion is until evenly mix.
Embodiment 2: a kind of seal gum for the electrically heated pipe fitting, it comprises vinyl silicone oil 55.6g, containing hydrogen silicone oil 2g, epoxy silicone resin 13g, 1000 order mica powder 19.5g, aerosil 4g, chloroplatinic acid catalyst 0.03g, ethynylcyclohexanol 0.03g.After each component weighing, high speed dispersion is until evenly mix.
Embodiment 3: a kind of seal gum for the electrically heated pipe fitting, it comprises vinyl silicone oil 52g, containing hydrogen silicone oil 1.8g, epoxy silicone resin 9.2g, 1000 order mica powder 15g, aerosil 2.6g.Chloroplatinic acid catalyst 0.03g, ethynylcyclohexanol 0.03g.After each component weighing, high speed dispersion is until evenly mix.
Embodiment 4: a kind of seal gum for the electrically heated pipe fitting, it comprises vinyl silicone oil 68g, containing hydrogen silicone oil 2.7g, epoxy silicone resin 13.9g, 1000 order silica powder 30g, aerosil 3.8g.Chloroplatinic acid catalyst 0.05g, ethynylcyclohexanol 0.05g.After each component weighing, high speed dispersion is until evenly mix.
Embodiment 5: a kind of seal gum for the electrically heated pipe fitting, it comprises vinyl silicone oil 43.8g, containing hydrogen silicone oil 1.2g, epoxy silicone resin 7.6g, 1000 order silica powder 16g, aerosil 2.2g.Chloroplatinic acid catalyst 0.07g, ethynylcyclohexanol 0.07g.After each component weighing, high speed dispersion is until evenly mix.
Embodiment 6: a kind of seal gum for the electrically heated pipe fitting, it comprises vinyl silicone oil 63.3g, containing hydrogen silicone oil 2.9g, epoxy silicone resin 14.8g, 1000 order silica powder 26g, aerosil 3.5g.Chloroplatinic acid catalyst 0.08g, ethynylcyclohexanol 0.08g.After each component weighing, high speed dispersion is until evenly mix.
After seal gum of the present invention is used in the electric heating tube sealing, detects, test work-ing life through the water test, insulation, the water pressure resistance of glue-line can reach 1.6MPa, and cold insulation resistance reaches 5*10
9Ω, the work hot insulation resistance reaches 10
8Ω, dielectric strength reaches 2KV/min, and Leakage Current is less than 0.5mA after cold conditions Leakage Current and hydraulic pressure and the seal test, and normal service life was above 10000 hours.
Claims (10)
1. seal gum that is used for the electrically heated pipe fitting is characterized in that: it comprises following component and by weight ratio:
40～75 parts of vinyl silicone oils
0.5～5 part of containing hydrogen silicone oil
3～18 parts of epoxy silicone resins
12～35 parts of heat conductive fillers
1～5 part of aerosil
0.01～0.1 part of chloroplatinic acid catalyst
0.01～0.1 part of ethynylcyclohexanol.
2. a kind of seal gum for the electrically heated pipe fitting according to claim 1, it is characterized in that: described vinyl silicone oil is 50～70 parts.
3. a kind of seal gum for the electrically heated pipe fitting according to claim 1, it is characterized in that: described containing hydrogen silicone oil is 1～3 part.
4. a kind of seal gum for the electrically heated pipe fitting according to claim 1, it is characterized in that: described epoxy silicone resin is 5～15 parts.
5. a kind of seal gum for the electrically heated pipe fitting according to claim 1, it is characterized in that: described heat conductive filler is 15～30 parts.
6. a kind of seal gum for the electrically heated pipe fitting according to claim 1, it is characterized in that: described aerosil is 2～4 parts.
7. a kind of seal gum for the electrically heated pipe fitting according to claim 1, it is characterized in that: described chloroplatinic acid catalyst is 0.03～0.08 part, described ethynylcyclohexanol is 0.03～0.08 part.
8. a kind of seal gum for the electrically heated pipe fitting according to claim 1 and 2, it is characterized in that: the viscosity of described vinyl silicone oil is 500～20000mPas.
9. it is characterized in that according to claim 1 or 3 described a kind of seal gums for the electrically heated pipe fitting: described containing hydrogen silicone oil contain hydrogen number at 0.3～0.8%wt.
10. a kind of seal gum for the electrically heated pipe fitting according to claim 1 or 5, it is characterized in that: described heat conductive filler is mica powder or silica powder, its particle size values is 1000 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436051XA CN102898999A (en) | 2012-11-06 | 2012-11-06 | Sealant for electrical heating tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210436051XA CN102898999A (en) | 2012-11-06 | 2012-11-06 | Sealant for electrical heating tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102898999A true CN102898999A (en) | 2013-01-30 |
Family
ID=47571495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210436051XA Pending CN102898999A (en) | 2012-11-06 | 2012-11-06 | Sealant for electrical heating tubes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102898999A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419723A (en) * | 2015-12-24 | 2016-03-23 | 平湖阿莱德实业有限公司 | Cross-linkable single-component heat-conductive dispensing-able glue |
| CN106085212A (en) * | 2016-06-15 | 2016-11-09 | 安徽弘美电器有限公司 | A kind of electrical water heater electric adds the insulating coating of heat pipe |
| CN109880583A (en) * | 2019-01-10 | 2019-06-14 | 北京康美特科技股份有限公司 | A kind of heat conduction organosilicon adhesive and its solidfied material and LED element |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100063310A1 (en) * | 2004-07-02 | 2010-03-11 | Knepper Jeffrey A | Functionalized silicon compounds |
| CN102492391A (en) * | 2011-11-28 | 2012-06-13 | 上海化工研究院 | Monocomponent addition type silicone rubber packaging glue with strong cohesiveness and preparation method thereof |
-
2012
- 2012-11-06 CN CN201210436051XA patent/CN102898999A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100063310A1 (en) * | 2004-07-02 | 2010-03-11 | Knepper Jeffrey A | Functionalized silicon compounds |
| CN102492391A (en) * | 2011-11-28 | 2012-06-13 | 上海化工研究院 | Monocomponent addition type silicone rubber packaging glue with strong cohesiveness and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419723A (en) * | 2015-12-24 | 2016-03-23 | 平湖阿莱德实业有限公司 | Cross-linkable single-component heat-conductive dispensing-able glue |
| CN105419723B (en) * | 2015-12-24 | 2018-04-10 | 平湖阿莱德实业有限公司 | A kind of crosslinkable one pack system heat conduction can dispensing |
| CN106085212A (en) * | 2016-06-15 | 2016-11-09 | 安徽弘美电器有限公司 | A kind of electrical water heater electric adds the insulating coating of heat pipe |
| CN109880583A (en) * | 2019-01-10 | 2019-06-14 | 北京康美特科技股份有限公司 | A kind of heat conduction organosilicon adhesive and its solidfied material and LED element |
| CN109880583B (en) * | 2019-01-10 | 2021-06-22 | 北京康美特科技股份有限公司 | Heat-conducting organic silicon adhesive, cured product thereof and LED element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130130 |