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A kind of acid-base reversible cross-linking silicone resin and its preparation method and application

A technology of cross-linking silicone and silicone, which is applied in the field of acid-base reversible cross-linking silicone resin and its preparation, can solve the problem that silicone resin has not been recycled, and achieve the effect of excellent processing suitability

Active Publication Date: 2020-11-03
MINJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even though some silicone resins can be recycled as toughening modifiers for other resins, most silicone resins have not been effectively recycled

Method used

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  • A kind of acid-base reversible cross-linking silicone resin and its preparation method and application
  • A kind of acid-base reversible cross-linking silicone resin and its preparation method and application
  • A kind of acid-base reversible cross-linking silicone resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Epoxy-terminated silicone oil and L-cystine were dissolved in γ-(2,3-glycidyloxy)propyltrimethoxysilane at a mass ratio of 100:5, and 5wt‰ of sodium ethylate was added as a catalyst at room temperature. After 1 hour of ring-opening reaction, an acid-base reversible cross-linking silicone resin is obtained. The acid-base reversible cross-linking silicone resin device or film is formed at 75°C, and can be formed through additive manufacturing technology, molding and other processing techniques.

Embodiment 2

[0021] Dissolve vinyl-terminated silicone oil and diallyl disulfide in γ-methacryloxypropyltrimethoxysilane at a mass ratio of 100:3, add 10wt‰ of dibenzoyl peroxide as catalyst, 80°C The free radical reaction was carried out for 2 hours to obtain an acid-base reversible cross-linking silicone resin. The acid-base reversible cross-linking silicone resin device or film is formed at 80°C, and can be formed through additive manufacturing technology, molding and other processing techniques.

Embodiment 3

[0023] Amino-terminated silicone oil and L-homocystine were dissolved in the medium at a mass ratio of 100:6, 10wt‰ of sodium bromide was added as a catalyst, and the reaction was carried out at 70°C for 2.5 hours to obtain an acid-base reversible cross-linked silicone resin. The acid-base reversible cross-linking silicone resin device or film is formed at 60°C, and can be formed through additive manufacturing technology, molding and other processing techniques.

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PUM

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Abstract

The invention relates to acid-base reversible crosslinking organic silicon resin and a preparation method thereof. The preparation method comprises the following steps: dissolving an organic silicon prepolymer and a compounding containing an acid-base reversible gene in a mass ratio of 100: 1 to 100: 3 in a diluent; and adding 0.5-10wt per mill of a catalyst to carry out room temperature reactionfor 0.1-24h to obtain the acid-base reversible crosslinking organic silicon resin. The reversible crosslinking function of the organic silicon resin is achieved by means of the characteristic of the acid-base reversible gene, and the purpose of recovering the organic silicon resin without pollution is achieved. In addition, the acid-base reversible crosslinking organic silicon resin can be formedby means of processing means such as an additive manufacturing technology and mold pressing.

Description

technical field [0001] The invention belongs to the modification field of organic silicon resin, and in particular relates to an acid-base reversible crosslinking organic silicon resin and a preparation method thereof. Background technique [0002] Silicone resin is a polyorganosiloxane with a highly cross-linked network structure. It is widely used in national defense, military, electrical Industry, light industrial products, food hygiene and other industries play an irreplaceable role. From the perspective of environmental protection, the excellent thermo-oxidative stability and anti-mold performance of silicone resin make it difficult to decompose naturally. Even though some silicone resins can be recycled as toughening modifiers for other resins, most silicone resins have not been effectively recycled. With the wide application of silicone resin, it has become another source of environmental pollution. Contents of the invention [0003] The object of the present inv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/392
CPCC08G77/392
Inventor 薛涵与林棋方润李心忠
Owner MINJIANG UNIV
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