CN1053619A - The preparation method of organosilicon rubber emulsion - Google Patents
The preparation method of organosilicon rubber emulsion Download PDFInfo
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- CN1053619A CN1053619A CN 90100436 CN90100436A CN1053619A CN 1053619 A CN1053619 A CN 1053619A CN 90100436 CN90100436 CN 90100436 CN 90100436 A CN90100436 A CN 90100436A CN 1053619 A CN1053619 A CN 1053619A
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- silicone rubber
- rubber
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- organosilicon
- emulsion
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Abstract
A kind of glass wool that can be used as be coated with gum forming, the vulcanization of rubber, the releasing agent of aspect such as plastics forming and die cast metal, electric wire processing, the organosilicon rubber emulsion its preparation method of the release agent of aspects such as sheet processing is: earlier organo-silicone rubber or contain the organo-silicone rubber solution of a small amount of solvent and emulsifier aqueous solution joins the paste that mixing in static mixer and the colloidal mill all changes into water-in-oil-type together, then this paste thin up, under 20 ℃ to 40 ℃ condition, mechanical stirring 2 to 3 hours obtains the uniform and stable organosilicon rubber emulsion of oil-in-water-type.This method is suitable for big mould rule and produces.
Description
The invention relates to the preparation method of organosilicon rubber emulsion, specifically be meant the two-step emulsification method of the organo-silicone rubber of molecular weight 10,000 to 700,000 by static mixer, colloidal mill coupling and one section machinery emulsification, it is evenly dispersed in the water, makes the preparation method of organosilicon rubber emulsion.
As everyone knows and since organo-silicone rubber have good heatproof, anti-oxidant, not volatile, nontoxic, to characteristics such as had no corrosive effect on metals, And and it and most of rubber plastic do not dissolve each other, especially its anti-adhesion performance is splendid, thereby it is general to have many uses.But when organic silicon rubber is used as releasing agent, release agent or other coating; using method often bothers; need earlier organo-silicone rubber is dissolved in 95～90% organic solvent such as toluene, dimethylbenzene, the gasoline or petrol ether etc. with 5～10% concentration; smear then or be sprayed on the base material; after treating solvent evaporates; form organic silicon rubber thin layer, can play the demoulding or antiseized effect.This using method not only bothers, and owing to used a large amount of organic solvents, thereby produced toxic and harmful, and polluted environment, endanger HUMAN HEALTH ， And and also caused fire alarm easily.
For the ease of using, the usage quantity that reduces or remove from solvent wishes to have the organosilicon rubber emulsion of a kind of " with water for oil ".But in existing technology, can only prepare the organic silicone oil emulsion with general machinery emulsification method, GB1 for example, 191,289 described methods are after the end capped methyl-silicone oil of trimethyl silyl, emulsifying agent such as polyoxyethylene octylphenol ether and a spot of water are mixed in a container earlier, pour into and be ground in the three-roller when being white in color pasty state, the organo-siloxane emulsion of oil-in-water-type is made in thin up, stirring.This method is difficult to the emulsification organo-silicone rubber.This is that surface tension is low because the organo-silicone rubber molecular weight is big, and hydrophobicity is extremely strong, so be difficult for it is dispersed in the water uniformly and stably with general machinery emulsification method, makes organosilicon rubber emulsion.Simultaneously, because the equipment that common mechanical emulsification is used is pressure-even pulp crusher mostly, two roller machine or three-rollers so yield poorly, are not suitable for scale operation.
The objective of the invention is to be difficult to of the coupling of emulsive organo-silicone rubber,, lack usefulness or, prepare a kind of organosilicon rubber emulsion easy to use without organic solvent through the effect of strong shearing force by static mixer and colloidal mill.
Organosilicon rubber emulsion of the present invention prepares by following method: at first organo-silicone rubber or contain the organo-silicone rubber solution of a small amount of solvent and emulsifier aqueous solution joins together and mixes the paste that all changes into water-in-oil-type in static mixer and the colloidal mill, then this paste thin up, mechanical stirring is 2 to 3 hours under 20 ℃ to 40 ℃ condition, obtains the uniform and stable organosilicon rubber emulsion of oil-in-water-type.The used proportioning of the present invention is all calculated by weight percentage.Used organo-silicone rubber consumption is 5～35%, and the emulsifying agent consumption is 2～10%, and consumption of organic solvent is 0～30%, and the consumption of water adds to 100%.
The molecular weight of used organo-silicone rubber is 10,000 to 700,000 among the present invention, and it comprises the organo-silicone rubber of methyl silicone rubber, methyl vinyl silicone rubber, α, omega end hydroxyl room temperature vulcanized silicone rubber, methyl block room temperature vulcanized silicone rubber, phenyl siloxane rubber and so on.
Used emulsifying agent can be that nonionic surface active agent comprises alkylphenol polyoxyethylene among the present invention, the nonionic surface active agent of C12-18 high fatty alcohol Soxylat A 25-7 and so on also can be the cationic surfactant that cationic surfactant comprises alkyl benzyl halogenation ammonium and so on.
Used organic solvent is gasoline, sherwood oil among the present invention.
Method of the present invention is applicable to that also emulsification viscosity is 50 to 1,000,000mm
2The organic silicone oil of/S.
Method of the present invention has not only solved the emulsification problem of organo-silicone rubber, and equipment is simple, and the emulsifying power height is easy to operate, is fit to scale operation.Owing to use no or little organic solvent; thereby significantly reduced toxic and harmful when using; reduce environmental pollution; improved the labour protection condition; and; easy to use with the organosilicon rubber emulsion that method of the present invention is produced, its release property and non-stick property are much higher than the organic silicone oil emulsion, so result of use is also very remarkable.
The product of producing with method of the present invention can be used for the releasing agent that glass wool is coated with aspects such as gum forming, the vulcanization of rubber, plastics forming and die cast metal, the release agent of aspects such as electric wire processing, sheet processing, the coating of speciality polymer thin-film material etc.
Following embodiment will further specify method of the present invention.
Embodiment 1
Component consumption %(weight)
Methyl silicone rubber (molecular weight 500,000) 8.75
Gasoline (120
*) 26.25
Alkylphenol polyoxyethylene 3
Fatty alcohol-polyoxyethylene ether 2
Water 60
8.75% methyl silicone rubber (molecular weight 500,000) is dissolved in 26.25% gasoline, join in static mixer and the colloidal mill with the aqueous solution of 3% alkylphenol polyoxyethylene and 2% fatty alcohol-polyoxyethylene ether and to mix homogenizing, under its strong shear action, get the paste of water-in-oil-type, then this paste is added water to 100% dilution, under 25 ° ± 5 ℃, mechanical stirring 2 hours obtains the organosilicon rubber emulsion of oil-in-water-type.Ambient-temp-stable six months.
Embodiment 2
Component consumption %(weight)
Methyl block room temperature vulcanized silicone rubber
(molecular weight 1-3 ten thousand) 13.3
Alkyl benzyl halogenation aqueous ammonium 4
Water 82.7
13.3% methyl block room temperature vulcanized silicone rubber joined in static mixer and the colloidal mill with 4% alkyl halide aqueous ammonium mix homogenizing, after treating into the paste of water-in-oil-type, taking-up adds water to 100% dilution, 25 ° ± 5 ℃ following mechanical stirring 2 hours, make the organosilicon rubber emulsion of oil-in-water-type.Ambient-temp-stable six months.
Embodiment 3
Component consumption %(weight)
Methyl vinyl silicone rubber (molecular weight 600,000) 5.8
Gasoline (120
*) 29.2
Alkylphenol polyoxyethylene 3
Fatty alcohol-polyoxyethylene ether 2
Water 60
Method is identical with embodiment 1
Embodiment 4
Component consumption %(weight)
α, omega end hydroxyl room temperature vulcanized silicone rubber
(molecular weight 1-5 ten thousand) 30
Alkyl benzyl halogenation ammonium 3
Water 67
Method is identical with embodiment 2.
Claims (4)
1, a kind of preparation method of organosilicon rubber emulsion, it is characterized in that earlier organo-silicone rubber or contain the organo-silicone rubber solution of a small amount of solvent and emulsifier aqueous solution joins the paste that mixing in static mixer and the colloidal mill all changes into water-in-oil-type together, then this paste thin up, mechanical stirring is 2 to 3 hours under 20 ° to 40 ℃ condition, obtain the uniform and stable organosilicon rubber emulsion of oil-in-water-type, used organo-silicone rubber consumption is 5～35% (weight), the emulsifying agent consumption is 2～10% (weight), consumption of organic solvent is 0 to 30% (weight), and the consumption of water adds to 100% (weight).
2, the preparation method of a kind of organosilicon rubber emulsion as claimed in claim 1, the molecular weight that it is characterized in that organo-silicone rubber is 10,000 to 700,000, it comprises methyl silicone rubber, methyl vinyl silicone rubber, α, the organo-silicone rubber of omega end hydroxyl room temperature vulcanized silicone rubber, methyl block room temperature vulcanized silicone rubber, phenyl siloxane rubber and so on.
3, the preparation method of a kind of organosilicon rubber emulsion as claimed in claim 1, it is characterized in that emulsifying agent can be a nonionic surface active agent, the nonionic surface active agent that comprises alkylphenol polyoxyethylene, C12-18 high fatty alcohol Soxylat A 25-7 and so on, can be cationic surfactant also, comprise the cats product of alkyl benzyl halogenation ammonium and so on.
4, the preparation method of a kind of organosilicon rubber emulsion as claimed in claim 1 is characterized in that organic solvent is gasoline, sherwood oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100436 CN1053619A (en) | 1990-01-23 | 1990-01-23 | The preparation method of organosilicon rubber emulsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100436 CN1053619A (en) | 1990-01-23 | 1990-01-23 | The preparation method of organosilicon rubber emulsion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1053619A true CN1053619A (en) | 1991-08-07 |
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ID=4876651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90100436 Pending CN1053619A (en) | 1990-01-23 | 1990-01-23 | The preparation method of organosilicon rubber emulsion |
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| CN (1) | CN1053619A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580592B (en) * | 2009-06-12 | 2011-07-20 | 南京工业大学 | Water-borne modification method of organic silicone resin |
| CN102199352A (en) * | 2010-03-25 | 2011-09-28 | 日照岚星化工工业有限公司 | Preparation method of water-soluble organosilicon emulsion mold release agent |
| CN102555413A (en) * | 2011-12-15 | 2012-07-11 | 常熟市新华化工有限公司 | Process for producing special rubber product |
| CN107268275A (en) * | 2016-04-08 | 2017-10-20 | 陕西飞机工业（集团）有限公司 | A kind of manufacture method of fire-proof and water-proof isolation cloth |
| CN110862555A (en) * | 2019-12-03 | 2020-03-06 | 中国化工株洲橡胶研究设计院有限公司 | High-temperature silicone rubber emulsion and preparation method and application thereof |
-
1990
- 1990-01-23 CN CN 90100436 patent/CN1053619A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580592B (en) * | 2009-06-12 | 2011-07-20 | 南京工业大学 | Water-borne modification method of organic silicone resin |
| CN102199352A (en) * | 2010-03-25 | 2011-09-28 | 日照岚星化工工业有限公司 | Preparation method of water-soluble organosilicon emulsion mold release agent |
| CN102555413A (en) * | 2011-12-15 | 2012-07-11 | 常熟市新华化工有限公司 | Process for producing special rubber product |
| CN107268275A (en) * | 2016-04-08 | 2017-10-20 | 陕西飞机工业（集团）有限公司 | A kind of manufacture method of fire-proof and water-proof isolation cloth |
| CN110862555A (en) * | 2019-12-03 | 2020-03-06 | 中国化工株洲橡胶研究设计院有限公司 | High-temperature silicone rubber emulsion and preparation method and application thereof |
| CN110862555B (en) * | 2019-12-03 | 2022-08-12 | 中国化工株洲橡胶研究设计院有限公司 | High-temperature silicone rubber emulsion and preparation method and application thereof |
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