Multi-carboxyl cage silsesquioxane modified epoxy resin and application thereof in coating

A technology of silsesquioxane and epoxy resin, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of blank, cage-type silsesquioxane difficult to disperse, and difficulty, and achieve fast reaction speed , good fullness and good adhesion
CN103865033AInactive Publication Date: 2014-06-18GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
Publication Date
2014-06-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of epoxy resin coating, and discloses a multi-carboxyl cage silsesquioxane (CSQ) modified epoxy resin and an application thereof in coating. The CSQ modified epoxy resin is prepared by following steps of throwing CSQ and epoxy resin into a reaction kettle according to the mass ratio of (1:4)-(1:7), adding a catalyst and an organic solvent, and mixing uniformly; reacting for 2-4 hours at 105-115DEG C, filtering and discharging, so as to obtain CSQ modified epoxy resin containing high activity hydroxyl; and then carrying out curing reaction on the hydroxyl and polyisocyanate group so as to prepare a high hardness quick curing coating, wherein the mass ratio of the organic coating to the curing agent is (30:50)-(70:25). The CSQ modified epoxy resin has high hardness, good abrasion performance and fast drying speed, so that the coating prepared based on the modified epoxy resin has advantages of high hardness, good toughness, fast drying speed, good shock resistance and good corrosion resistance.
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Description

technical field

[0001] The invention belongs to the field of epoxy resin coatings, in particular to a polycarboxy cage silsesquioxane modified epoxy resin and its application in coatings. Background technique

[0002] With the development of the economy, users have higher and higher requirements for the performance of epoxy paint, not only requiring it to have excellent adhesion and wear resistance, but also requiring it to be self-drying after 24 hours of painting, so that the epoxy resin The fast drying requirements are very high. The epoxy resin molecular chain contains carboxyl, hydroxyl, epoxy and other groups, so it has excellent mechanical properties and physical and chemical properties. Epoxy resin coatings become macromolecules with a network structure by cross-linking with a curing agent during the drying process. However, in epoxy resin paint, simply using a curing agent to cure epoxy resin, the cured product has high brittleness, low impact strength, and is eas...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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