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A kind of preparation method and application of high-viscosity silicone raw rubber emulsion

A kind of silicone raw rubber, high viscosity technology, applied in textile and papermaking, plant fiber, fiber processing and other directions, can solve the problems of poor stability of silicone raw rubber emulsion, inability to disperse high viscosity raw silicone rubber and other problems

Active Publication Date: 2021-09-10
JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of inability to disperse high-viscosity silicone raw rubber and the poor stability of the obtained silicone raw rubber emulsion in the prior art

Method used

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  • A kind of preparation method and application of high-viscosity silicone raw rubber emulsion
  • A kind of preparation method and application of high-viscosity silicone raw rubber emulsion
  • A kind of preparation method and application of high-viscosity silicone raw rubber emulsion

Examples

Experimental program
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Effect test

preparation example 1

[0037] Add 200g hydroxyl silicone oil (viscosity 5000cp) and 100g amino silicone oil (viscosity 3000cp) into a 1L anchor reactor, add 100g hydroxyl raw rubber (molecular weight 550,000, viscosity 20 million cp) under normal temperature stirring conditions, stirring speed is 100rpm, stir After 2 hours, add 38g Emcol PS-50 and 12gLX-490A compound emulsifier (its HLB value is estimated to be 10.7 according to the above formula I) and 5gDM-115M (viscosity 2000cp) as emulsification aids, continue to stir for 1 hour, add emulsification 53g of water, stirred for 2 hours, and then slowly added dropwise 497g of dilution water to prepare a silicone raw rubber emulsion of the desired concentration.

preparation example 2

[0039] The operation is the same as in Example 1, except that the compound emulsifier is 40g Atmul 67 and 10g SY-830. After estimating according to formula I, its HLB value is 11.04.

preparation example 3

[0041] The operation is the same as in Example 1, except that the compounded emulsifier is 42g Emcol DM-50 and 8g SY-840, and after estimating according to formula I, its HLB value is 11.1.

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Abstract

The invention provides a method for preparing high-viscosity silicone rubber emulsion, which comprises slowly adding high-viscosity silicone rubber into low-viscosity silicone oil and mixing evenly under stirring conditions, adding emulsifiers and emulsification aids in batches, Emulsify water, then slowly add water to finally obtain the finished silicone raw rubber emulsion, wherein the emulsifying aid is polyether modified silicone oil. The emulsion preparation method of the present invention can effectively emulsify and disperse 20 million cp ultra-high viscosity silicon raw rubber. The obtained emulsion is uniformly dispersed, has a small particle size, and has excellent stability. It can maintain good stability without demulsification and delamination. The silicon raw rubber emulsion prepared by the present invention is used as a smoothing agent or a softener, and after the fabric is treated, the hand feeling of the fabric is greatly improved, and no toxic organic solvent or other substances that may cause damage to the skin are used, so there is no potential safety hazard , is a green, healthy and non-toxic fabric smoothing agent.

Description

technical field [0001] The invention relates to the field of organic silicon, in particular to a preparation method and application of a high-viscosity silicon raw rubber emulsion. Background technique [0002] Unvulcanized (cross-linked) basic polysiloxane, called raw silicone rubber (referred to as raw rubber), is a type of linear polydiorganosiloxane with high molar mass, and most of them have a degree of polymerization of 5,000 to 10,000. , the average molar mass is 400,000 to 800,000 g / mol, and the linear polydiorganosiloxane with a kinematic viscosity of several million to more than 10 million cp can flow slowly in a cold state because the molecules are easy to slip . Its molecular structural formula can be expressed as follows: [0003] [0004] The end group can be hydroxyl, methyl or capped with a capping agent. n, m, and p are the number of siloxane chains, ie, the degree of polymerization. Because of its excellent softness, hydrophobicity and wettability, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C08L83/04D06M15/643D06M101/32D06M101/06
Inventor 伞振鑫姜宇嵘龙娇秀黄素萄
Owner JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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