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Black slurry for liquid flame-retarding silicone rubber and preparation process thereof

A technology of silicone rubber and black paste, applied in the direction of pigment paste, etc., can solve the problems of unstable dispersion and poor fluidity, and achieve the effects of good dispersion, wide application range and simple production process

Pending Publication Date: 2019-05-28
东莞市圣力堡有机硅科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings and shortcomings of poor fluidity and unstable dispersion in the existing oily colorants used in liquid silica gel, the purpose of the present invention is to provide a simple process, stable performance, good compatibility, strong dispersibility, and no Black slurry for liquid silicone rubber with color marks left in liquid silicone rubber and a wide range of applications and its preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A black slurry for liquid flame-retardant silicone rubber, comprising the following components in mass percentage: 80% vinyl-terminated silicone oil, 5% carbon black, 5% white carbon black, 0.5% hydroxyl silicone oil, 0.5% dispersant and flame retardant 9%.

[0024] Wherein, the dispersant is a polymer dispersant, specifically an acrylate polymer.

[0025] Wherein, the flame retardant is a silicon-based flame retardant.

[0026] Wherein, the white carbon black is 300 mesh meteorological silica treated with hexamethylsilazane.

[0027] A preparation process for black slurry for liquid flame-retardant silicone rubber, comprising the steps of:

[0028] S1. Mix 40% of vinyl-terminated silicone oil, 5% of white carbon black and 0.5% of hydroxyl silicone oil in the formula into a kneader at 30°C and knead for 30 minutes, then increase the temperature of the kneader to 120°C Knead for 1 hour to obtain white carbon black thick material;

[0029] S2, place the white carbon b...

Embodiment 2

[0034] A black slurry for liquid flame-retardant silicone rubber, comprising the following components in mass percentage: 76% vinyl-terminated silicone oil, 10% carbon black, 10% white carbon black, 0.5% hydroxyl silicone oil, 0.5% dispersant and flame retardant 3%.

[0035] Wherein, the dispersant is a polymer dispersant, specifically polyurethane.

[0036] Wherein, the flame retardant is a phosphorus-based flame retardant.

[0037] Wherein, the white carbon black is 300 mesh meteorological silica treated with hexamethylsilazane.

[0038] A preparation process for black slurry for liquid flame-retardant silicone rubber, comprising the steps of:

[0039] S1. Mix half of the vinyl-terminated silicone oil (38%), 10% white carbon black and 0.5% hydroxyl silicone oil into a kneader at a temperature of 30°C and knead for 30 minutes, then increase the temperature of the kneader Knead at 120°C for 1 hour to obtain white carbon black thick material;

[0040] S2, the white carbon b...

Embodiment 3

[0045] A black slurry for liquid flame-retardant silicone rubber, comprising the following components in mass percentage: 71% vinyl-terminated silicone oil, 8% carbon black, 8% white carbon black, 1% hydroxyl silicone oil, 2% dispersant and flame retardant 10%.

[0046] Wherein, the dispersant is a polymer dispersant, specifically polyacrylate.

[0047] Wherein, the flame retardant is a nitrogen-based flame retardant.

[0048] Wherein, the white carbon black is 300 mesh meteorological silica treated with hexamethylsilazane.

[0049] A preparation process for black slurry for liquid flame-retardant silicone rubber, comprising the steps of:

[0050] S1. Mix half of the vinyl-terminated silicone oil (35.5%), 8% white carbon black and 1% hydroxyl silicone oil into a kneader at a temperature of 30°C and knead for 30 minutes, then increase the temperature of the kneader Knead at 120°C for 1 hour to obtain white carbon black thick material;

[0051] S2, the white carbon black thi...

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PUM

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Abstract

The invention relates to the technical fields of coatings and preparation processes thereof, and particularly, relates to black slurry for liquid silicone rubber. The black slurry comprises the following components: 70% to 80% of vinyl-terminated silicone oil, 5% to 15% of carbon black, 5% to 15% of white carbon black, 0.5% to 2% of hydroxyl silicone oil, 0.1% to 3% of a dispersant and 3% to 10% of a flame retardant. A preparation process comprises the following steps of adding the vinyl-terminated silicone oil, the 5% to 15% of white carbon black and the 0.5% to 2% of hydroxyl silicone oil ina formula to a kneader, kneading for 30 minutes, increasing the temperature of the kneader, and kneading for 1 hour, to obtain a thick material; putting the thick material and the rest vinyl-terminated silicone oil, the dispersant and the flame retardant into a material bucket, and uniformly stirring a mixture through an agitator; lowering the speed of the agitator, slowly feeding the carbon black into the material bucket, and uniformly stirring; uniformly stirring a mixture for 30 minutes 60 minutes by the agitator, and grinding the mixture for 3 to 5 times through a three-roll mill until aparticle diameter of the mixture is less than 5 mum. The black slurry provided by the invention is not only simple in process, stable in performance and good in dispersibility, but also does not leavea color mark in the liquid silicone rubber, and is wide in application range.

Description

technical field [0001] The invention relates to the technical field of paint and its preparation process, in particular to a black slurry for liquid flame-retardant silicone rubber and its preparation process. Background technique [0002] Oil-based colorants are widely used in paint, plastic processing, and textile fields. The oil-based colorants currently on the market are made of alkyd resins or synthetic fatty acid resins, and are formed by adding wetting and dispersing agents to improve the dispersibility of toners. It has the advantages of good tinting power and good hiding power. [0003] However, there are generally disadvantages such as poor permeability, transparency, and poor dilution stability. Taking black oily color paste as an example, in the preparation, usually organic pigments and carbon black substances have high oil absorption value, and the content of the preparation is not high in the existing conventional methods. , especially black oily colorants, us...

Claims

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Application Information

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IPC IPC(8): C09D17/00
Inventor 梁展汪宇
Owner 东莞市圣力堡有机硅科技有限公司