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Preparation method of high-viscosity silicon raw rubber emulsion and application

A silicon raw rubber, high-viscosity technology, applied in textiles and papermaking, fiber type, fiber treatment, etc., can solve the problems of inability to disperse high-viscosity silicon raw rubber, poor stability of silicon raw rubber emulsion, etc., to reduce production costs , high fabric smoothness, good hand feeling effect

Active Publication Date: 2019-06-21
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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  • Preparation method of high-viscosity silicon raw rubber emulsion and application
  • Preparation method of high-viscosity silicon raw rubber emulsion and application
  • Preparation method of high-viscosity silicon raw rubber emulsion and application

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 preparation method of high-viscosity silicon raw rubber emulsion. The preparation method comprises the following steps: slowly adding high-viscosity silicon raw rubber into low-viscosity silicone oil under a stirring condition for uniform mixing, adding an emulsifier, an emulsification aid and emulsification water in batches, and slowly adding water to finally obtain a silicon raw rubber emulsion finished product, wherein the emulsification aid is polyether modified silicone oil. According to the preparation method of the emulsion, which is disclosed by the invention,20,000,000 cp of ultrahigh-viscosity silicon raw rubber can be effectively dispersed, and the obtained emulsion is uniformly dispersed, small in particle size and excellent in stability; under conditions such as long-time placement or high temperature, centrifugation and the like, extremely high stability can be still maintained, and no demulsification and no layering occur. The silicon raw rubberemulsion prepared by the preparation method is a smoothing agent or a softening agent; after a fabric is treated with the emulsion, the handfeel of the fabric is greatly enhanced; furthermore, no toxic organic solvent or other substances possibly injuring the skin are used, so that the potential safety hazard is avoided; and the high-viscosity silicon raw rubber emulsion is an environmentally-friendly, healthy and nontoxic 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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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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