CN104446164A - Cement resistor sealing material formula - Google Patents
Cement resistor sealing material formula Download PDFInfo
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- CN104446164A CN104446164A CN201310429467.3A CN201310429467A CN104446164A CN 104446164 A CN104446164 A CN 104446164A CN 201310429467 A CN201310429467 A CN 201310429467A CN 104446164 A CN104446164 A CN 104446164A
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- Prior art keywords
- cement
- resistor
- sealing material
- powder
- silicone resin
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Abstract
The invention discloses a cement resistor sealing material formula, which belongs to the field of new material. The formula includes methyl silicone resin, a curing agent, quartz sand, quartz powder, talcum powder, xylene, silicone resin, calcium-magnesium powder, ethanol, and modified organic silicon resin. The cement sealing material formula provided in the invention can be used in sealing resistors with ceramic housings, large power aluminium housings and super large power aluminium housings.
Description
technical field
The invention belongs to field of new, particularly relate to a kind of cement resistor envelope material formula.
Background technology
Cement resistor is a kind of power-type ceramic shell resistor introducing China from Japan along with the process of colour TV production domesticization, the production domesticization of colour TV components and parts the eighties.This type of resistor is insulated type, encapsulates with cement encapsulating compound.Initial stage is supporting because ceramic shell cement resistor is mainly colour television set, and according to SJ3272-90 " resistor safety requirements " requirement, this type resistor requires fire-retardant.Therefore the encapsulating compound for the encapsulation of such resistor also must have flame retardant properties.Cement encapsulating compound is namely succeeded in developing in the case.
In recent years, ceramic shell cement resistor had been widely used in all kinds of electric power, electronics, and along with the growth of product production, kind, cement encapsulating compound is also widely used.Make all kinds of cement encapsulating compound base-materials also from initial methyl silicon resin a kind of develop into present good multiple.Along with the variation of cement encapsulating compound, the advantages such as cement encapsulating compound valency of fine quality is low in addition, encapsulating products intensity is good, insulation strength is high, wet fastness is good, fire-retardant, in recent years, the encapsulation of each eka-aluminum shell and super high power type resistor with aluminum shell also adopts cement encapsulating compound to encapsulate.
Summary of the invention
Object of the present invention encapsulates formula, for the encapsulation of each eka-aluminum shell and super high power type resistor with aluminum shell for providing a kind of cement resistor.
The present invention is achieved in the following ways: formula comprises methyl silicon resin, solidifying agent, quartz sand, silica powder, talcum powder, dimethylbenzene, silicone resin, dry powder, ethanol, modified organic silicone resin.
Beneficial effect of the present invention is: cement encapsulating compound formula provided by the invention can be used for the encapsulation of ceramic shell, high-power aluminium shell and super high power type resistor with aluminum shell.
Embodiment
Embodiment 1
Methyl silicon resin 500g
Solidifying agent 20g
Quartz sand 1000g
Silica powder 1500g
Talcum powder 500g
Dimethylbenzene is appropriate
Methyl silicon resin is faint yellow to deep yellow uniform liquid, has degree of crosslinking high rigidity high, have excellent electric property after Cheng Mo, heat-resisting, resistance to oxidation, moistureproof, effect such as fire-retardant grade.Have SAR-9 based resin in base-material, its thinner used should be: toluene or dimethylbenzene.In order to reduce production cost, reducing benzene class toxicity and also can consider to use lacquer thinner.Industrial lacquer thinner composition As butanols 5%, toluene 21%, dimethylbenzene 5%, N-BUTYL ACETATE 15%.In order to strengthen quartz sand potting compound intensity, the ratio of dimethylbenzene can be strengthened.
Good with the cement encapsulating compound suspension of this formulated, be easy to technological operation, encapsulating products surfacing, consistence is good, and encapsulating compound cured strength is high.But shortcoming makes solvent with dimethylbenzene not only price is higher and dimethylbenzene has harm to human body, encapsulating face burnt hair.Product has venting event after adding rated output load, and encapsulating face turns to be yellow, the outside unnecessary encapsulating compound of product not easy to clean, and the solidifying agent used in formula has corrosion to resistance alloy line and resistor leading-out end.
Embodiment 2
Silicone resin 1000g
Quartz sand 3000g
Silica powder 1000g
Talcum powder 600 g
Dry powder 1500g
Industrial spirit is appropriate
The cement encapsulating compound of this kind of formulated is good, the easy handling of suspension not only, and encapsulating face is smooth, and the outside unnecessary encapsulating compound of product is easier to cleaning, and product encapsulating face is pure white.The solvent not only low but also environmental protection of price is done with industrial spirit, harmless.And product adds after rated output load without obvious venting event.Shortcoming is that after product adds rated output load, encapsulating face turns to be yellow, and after encapsulating compound solidification, hardness is not high.
Embodiment 3
Silicone resin 5000g
Quartz sand 4500g
Silica powder 4000g
Talcum powder 1500g
Appropriate amount of ethanol
Feature: environmental protection; Nontoxic; Colourless; High temperature resistant; Organic solvent-resistant soaks and is applicable to cement resistor filling and sealing machine, wire-wound resistor Jin Tu.
The cement encapsulating compound suspension of this kind of formulated is good, easy handling, and encapsulating face is smooth, pure white.Nontoxic with ethanol as solvent, be conducive to environment protection.The rear hardness of encapsulating compound solidification is high, organic solvent-resistant soaks.Product adds after rated output load without venting event, without encapsulating face yellowing phenomenon.Shortcoming is the more difficult cleaning of the outside unnecessary encapsulating compound of product; Cost is high.Be applicable to the encapsulation of high-power aluminum casing resistor.
Embodiment 4
Modified organic silicone resin 5000g
Quartz sand 4500g
Silica powder 4000g
Talcum powder 1500g
Appropriate amount of ethanol
Feature: environmental protection; Nontoxic; Colourless; High temperature resistant; Be applicable to cement resistor embedding.
The product surface of the cement encapsulating compound encapsulation of this kind of formulated is smooth; Great thermotolerance; Cost is low.But the shortcoming existed is: cause package strength poor because solids content is low; The hard internal defect in surface; Poor solvent resistance; Encapsulating face has cut; Anti-knocking property are poor.But be still a kind of cement encapsulating compound ideal at present for the encapsulation of small power cement resistor.
Drying conditions: be slowly warming up to 150 DEG C; Toasting one hour can complete drying.
Embodiment 5
Silicon cement 2800g
Quartz sand 5800g
Appropriate amount of ethanol
The product strength of the cement encapsulating compound encapsulation of this kind of formulated is good; Envelope material good integrity, without meal in envelope material; Anti-knocking property are good; Withstand voltage, solvent resistance is good; Moderate cost.But surface is brightless; Appearance poor.Also be a kind of cement encapsulating compound ideal at present.
Claims (1)
1. a cement resistor envelope material formula, is characterized in that: formula comprises methyl silicon resin, solidifying agent, quartz sand, silica powder, talcum powder, dimethylbenzene, silicone resin, dry powder, ethanol, modified organic silicone resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310429467.3A CN104446164A (en) | 2013-09-22 | 2013-09-22 | Cement resistor sealing material formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310429467.3A CN104446164A (en) | 2013-09-22 | 2013-09-22 | Cement resistor sealing material formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104446164A true CN104446164A (en) | 2015-03-25 |
Family
ID=52893014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310429467.3A Pending CN104446164A (en) | 2013-09-22 | 2013-09-22 | Cement resistor sealing material formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104446164A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504837A (en) * | 2016-11-30 | 2017-03-15 | 广东福德电子有限公司 | A kind of mouth-sealing method of aluminum casing resistor end face |
| CN111056772A (en) * | 2019-12-09 | 2020-04-24 | 广东意杰科技有限公司 | High-strength cement resistance encapsulating material and processing technology thereof |
-
2013
- 2013-09-22 CN CN201310429467.3A patent/CN104446164A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504837A (en) * | 2016-11-30 | 2017-03-15 | 广东福德电子有限公司 | A kind of mouth-sealing method of aluminum casing resistor end face |
| CN111056772A (en) * | 2019-12-09 | 2020-04-24 | 广东意杰科技有限公司 | High-strength cement resistance encapsulating material and processing technology thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |