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Solvent-free epoxy-organic silicon composition capable of self-layering and curing

A silicone, self-layering technology, applied in epoxy resin coatings, coatings, etc., can solve problems such as self-layering epoxy-silicon coatings that have not yet been seen

Active Publication Date: 2008-08-06
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no reports of self-delamination epoxy-organic silicon coatings and solvent-free self-delamination coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Material ratio:

[0021] (1) Component A:

[0022] Epoxy: 100

[0023] Hydroxy-terminated polydimethylsiloxane: 120

[0024] (2) B component:

[0025] Amidoamine: 30

[0026] Tetraethyl orthosilicate: 8

[0027] Dibutyltin silicate in February: 0.05

[0028] Mix component A and component B (according to the above weight ratio) evenly, and paint after curing for half an hour (25°C).

Embodiment 2

[0030] Material ratio:

[0031] (1) Component A:

[0032] Polyether modified epoxy resin: 100

[0033] Hydroxyl-terminated polydimethylsiloxane: 20

[0034] (2) B component:

[0035] Amidoamine: 25

[0036] Ketoximosilane: 1

[0037] Dibutyltin silicate in February: 0.02

[0038] Mix component A and component B (according to the above weight ratio) evenly, and paint after curing for half an hour (25°C).

Embodiment 3

[0040] Material ratio:

[0041] (1) Component A:

[0042] Polyether modified epoxy resin: 20

[0043] Hydroxyl-terminated polydimethylsiloxane: 100

[0044] (2) B component:

[0045] Amidoamines: 5

[0046] Ketoximosilane: 5

[0047] Dibutyltin silicate in February: 0.02

[0048] Mix component A and component B (according to the above weight ratio) evenly, and paint after curing for half an hour (25°C).

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PUM

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Abstract

The invention belongs to the chemical material technology field, providing an epoxy-organosilicon composition which does not comprises solvent, and can automatically stratified and solidified, which comprises two components, wherein the first component is formed by 100-0 parts of epoxy resin, 0-100 parts of polyether modification epoxy resin and 20-240 parts of organosilicon resin, and the second component comprises 5-40 parts of amine curing agent, 1-16 parts of organosilicon cross linker and 0-0.05 parts of organosilicon cross-linking catalyst, wherein the parts which are added are parts by weight. The epoxy-organosilicon composition utilizes the exclusion principle between epoxy resin and organosilicon resin, and can automatically stratify in the film forming process, and the epoxy resin is deposited to the bottom and the organosilicon is exposed on the outer surface. The composition does not comprises solvent, and has the advantages of non toxic and environmental protection, and solidified products share the characteristics of distinct adhesive force of epoxy resin and low weatherability and surface property of organosilicon.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and mainly relates to a solvent-free epoxy-organosilicon composition that can be self-layered and cured. Background technique [0002] In the coatings industry, since most single-layer coatings cannot achieve good protection and decoration effects, the surface of the object to be coated usually needs to be coated with multi-layer coatings to meet the requirements. However, each layer needs to be constructed separately, the construction process is many, the time is long, and the cost is high. There may be disadvantages of poor adhesion and short service life between the two layers. In 1976, Funke et al. proposed a new concept - self-layered coatings. Self-layering coatings are composed of two (or more) incompatible polymers. After the coating is applied to the substrate, it can spontaneously and directly produce phase separation, and it is divided into two (or more) during the film for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L83/14C08K5/17C09D163/00
Inventor 黄志军叶章基姚敬华
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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