Water-based bi-component high-gloss finishing coat for helmet and preparation method thereof
A two-component, high-gloss technology, applied in the field of coatings, can solve the problems of easy generation of prickly heat and dark bubbles in the paint layer, slow drying speed of water-based topcoats, easy sagging during construction, etc., to achieve moderate viscosity, good thixotropy, and construction. The effect of high solids content
Active Publication Date: 2018-12-11
GUANGDONG YATU CHEM
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Problems solved by technology
[0005] In order to solve the problems existing in the prior art (such as the slow drying speed of the water-based topcoat, poor fullness, easy to hang during construction, and the paint layer is very prone to defects such as prickly heat and dark bubbles), the invention provides a helmet The water-based two-component high-gloss finish paint has the characteristics of long pot life, high hardness and good thixotropy. The wet film thickness is more than 65 μm without sagging, prickly heat and dark bubbles. It solves the problems of water-based paint due to construction. Low solid content leading to technical problems of poor fullness and appearance
Method used
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Embodiment 1～6
[0030] The preparation method of embodiment 1~6 is as follows:
[0031] S1. Put the formula amount of deionized water, dispersant BYK-190 and pH adjuster into the dispersion tank to disperse evenly, then slowly add conductive carbon black, pre-disperse at 400rpm for 25min, and then use a sand mill to The pre-dispersed mixture is ground to below 8 μm to obtain a color paste;
[0032] S2. Put the water-based hydroxyacrylic acid copolymer dispersion, leveling agent and film-forming aid in the formulated amount into the paint mixing tank to disperse evenly, then add the color paste, disperse at 700rpm for 20min, and then add the alkali swelling thickener and non-ionic associative thickener, disperse for 5 minutes, and get paint after filtering;
[0033] S3, take the hydrophobic HDI trimer of formula quantity, the hydrophilic polyether-modified aliphatic polyisocyanate based on HDI and propylene glycol methyl ether acetate, mix uniformly, obtain cross-linking agent after filtering...
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The invention belongs to the technical field of coatings, and particularly relates to a water-based bi-component high-gloss finishing coat for a helmet and a preparation method thereof. The finishingcoat is prepared from a paint and a crosslinking agent according to the weight ratio being 100: (16 to 19), wherein the paint is prepared from a water-based hydroxyacrylic acid copolymer dispersoid, aflatting agent, a dispersing agent BYK-190, a pH value modifier, a coalescing agent, conductive carbon black, a non-ionic associative thickener, an alkaline swelling thickener and deionized water; the crosslinking agent is prepared from a hydrophobic HDI tripolymer, hydrophilic polyether modified aliphatic polyisocyanate based on HDI, and propylene glycol monomethyl ether. The finishing coat provided by the invention has the characteristics of long working life, high hardness and good thixotropy, has the wet film thickness being more than 65mum without sagging, has no defects of miliaria andbubbles, and solves the technical problems of poor fullness and appearance caused by low construction solid content of the water-based coating.
Description
technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based two-component high-gloss finish paint for helmets and a preparation method thereof. Background technique [0002] Composite material is a new type of engineering material developed in recent decades. It has the advantages of high specific strength, high specific stiffness and low relative density. Especially ABS resin, glass fiber composite material, carbon fiber composite material, etc. are used in motorcycle helmets, Fields such as fire helmets are widely used. [0003] However, in nature, composite materials will be subjected to the combined effects of humid gas in the air, salt spray, rain and sunlight, etc., causing them to age, so that their appearance and mechanical properties will deteriorate. For example, unprotected ABS resin and glass fiber reinforced composite materials can undergo obvious appearance changes under atmospheric conditions, su...
Claims
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Login to View More IPC IPC(8): C09D175/04C09D7/44C09D7/61
CPCC08K2201/001C09D7/44C09D7/61C09D175/04C08K3/04
Inventor 赵立英刘冬立张育波陈容爱冯兆均
Owner GUANGDONG YATU CHEM