Polyurethane modified epoxy resin coating with impact resistance
An epoxy resin coating and polyurethane modification technology, applied in the field of composite coatings, can solve the problems of difficult to meet engineering technology, fatigue resistance, poor toughness, limited wide applicability, etc., to achieve good product stability and increase corrosion resistance. , the effect of reducing the release of VOC)
Inactive Publication Date: 2018-01-26
赵圣恺
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Problems solved by technology
Due to the high cross-linking structure of pure epoxy resin, it has disadvantages such as fatigue resistance and poor toughness, and it is difficult to meet the requirements of engineering technology
[0003] Benzoxazine resin is a new type of phenolic resin with small relative molecular weight, low viscosity and good solubility, so it has a wide range of applications. However, when using benzoxazine resin alone, the treatment temperature after curing is relatively high High, which increases the difficulty for subsequent processing, and the existence of this shortcoming limits the wide applicability of the application
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[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0017] Weigh the raw materials according to the formula amounts of Examples 1-12 and Comparative Examples 1-6 in the following table 1, add the benzoxazine resin, polyurethane modified epoxy resin and water into the mixing homogenizer, and pre- Mix for 10 minutes and mix thoroughly to obtain a premix, then add modified ethylene bis fatty acid amide and β-nucleating agent to the premix, continue mixing for 30 minutes, finally add water-based curing agent, and mix for 20 minutes.
[0018] Table 1 The parts by weight of impact-resistant pol...
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The invention discloses a polyurethane modified epoxy resin coating with impact resistance. The polyurethane modified epoxy resin coating is prepared from raw materials in parts by weight as follows:40-65 parts of benzoxazine resin, 15-25 parts of polyurethane modified epoxy resin, 8-15 parts of a water-borne curing agent, 0.1-0.5 parts of a beta-nucleating agent and 0.01-0.2 parts of modified ethylene double fatty acid amide. The coating has good mechanical performance and can be used in environments with higher requirements for mechanical property.
Description
technical field [0001] The invention relates to the technical field of composite coatings, in particular to an impact-resistant polyurethane modified epoxy resin coating. Background technique [0002] Epoxy resin is a kind of thermosetting resin, which is widely used in adhesives, coatings, composite coating substrates, etc. due to its excellent adhesion, mechanical strength, electrical insulation and good processability. Due to the high cross-linking structure of pure epoxy resin, there are disadvantages such as fatigue resistance and poor toughness, and it is difficult to meet the requirements of engineering technology. [0003] Benzoxazine resin is a new type of phenolic resin with small relative molecular weight, low viscosity and good solubility, so it has a wide range of applications. However, when benzoxazine resin is used alone, the treatment temperature after curing is relatively high High, which increases the difficulty for subsequent processing, and the existence...
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IPC IPC(8): C09D161/34C09D163/00C09D175/04C09D5/08C09D7/63C09D7/61
Inventor 赵圣恺
Owner 赵圣恺