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Preparation method of water-based low-temperature primer for bicycle

A water-based, bicycle-based technology, applied in the field of primers, can solve the problems that primers cannot be applied, and achieve the effects of no reduction in strength, guaranteed interlayer adhesion, various performances, and good workability

Active Publication Date: 2020-05-19
CHANGZHOU HUASHI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantage that existing primers cannot be applied at low temperatures, the invention provides a water-based low-temperature primer for bicycles and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] A method for preparing a water-based low-temperature primer for bicycles, production preparation: prepare high-molecular-weight water-based polyester resin, amino resin, epoxy phosphate resin, fluorine-modified acrylic leveling agent, cosolvent, DMEA neutralizer, organic silicon Substrate wetting agent, water-based thixotropic filler paddle, water-based polyester black pulp, deionized water; dispersing and mixing equipment, paint mixing tank, electronic scale, key spoon and 10-liter convenient bucket;

[0039] Resin material mixing: put high molecular weight water-based polyester resin, amino resin, epoxy phosphate resin, co-solvent, DMEA neutralizer into the paint mixing tank, start stirring at 500-600 rpm, and stir for 10 minutes , all kinds of materials are fully mixed to form a uniform liquid, then put in water-based thixotropic filler paddle, water-based polyester black pulp, fluorine-modified acrylic leveling agent, silicone substrate wetting agent, and stir at 800...

Embodiment 1

[0041] Prepare raw materials, high molecular weight water-based polyester resin: 8.5%; amino resin: 9.5%; epoxy phosphate resin: 1.7%; fluorine-modified acrylic leveling agent: 0.3%; cosolvent (ethylene glycol butyl ether) 8, DMEA neutralizer 0.6%; silicone substrate wetting agent 0.3%, water-based thixotropic filler paddle 43.40%, water-based polyester black paste 15%, deionized water 12.80%.

[0042] Put high-molecular-weight water-based polyester resin, amino resin, epoxy phosphate resin, cosolvent, and DMEA neutralizer into the paint mixing tank, start stirring at 500-600 rpm, and stir for 10 minutes. Mix well to form a uniform liquid, then put in water-based thixotropic filler paddle, water-based polyester black pulp, fluorine-modified acrylic leveling agent, and silicone substrate wetting agent, stir at 800 rpm for 20 minutes, adjust Stir at 1200 rpm for 30 minutes evenly; use deionized water to adjust the viscosity of the Tu-4 viscosity cup to more than 80 seconds.

Embodiment 2

[0044] Prepare raw materials, high molecular weight water-based polyester resin: 10.00%; amino resin: 9.29%; epoxy phosphate resin: 1.86%; fluorine-modified acrylic leveling agent: 0.5%; cosolvent (ethylene glycol butyl ether) 6, DMEA neutralizer 0.65%; silicone substrate wetting agent 0.4%; water-based thixotropic filler paddle 41.00%, water-based polyester black paste 16%, deionized water 13.02%.

[0045] Put high-molecular-weight water-based polyester resin, amino resin, epoxy phosphate resin, cosolvent, and DMEA neutralizer into the paint mixing tank, start stirring at 500-600 rpm, and stir for 10 minutes. Mix well to form a uniform liquid, then put in water-based thixotropic filler paddle, water-based polyester black pulp, fluorine-modified acrylic leveling agent, and silicone substrate wetting agent, stir at 800 rpm for 20 minutes, adjust Stir at 1200 rpm for 30 minutes evenly; use deionized water to adjust the viscosity of the Tu-4 viscosity cup to more than 80 seconds....

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Abstract

The invention relates to the technical field of primers and particularly relates to a preparation method of a water-based low-temperature primer for a bicycle. The water-based low-temperature primer for the bicycle is mainly prepared from the following components in percentages by weight: 11.21-6.22% of high-molecular weight waterborne polyester resin, 10.41-8.74% of amino resin, 1.56-1.86% of epoxy phosphate resin, 0.30-0.50% of a fluorine-modified acrylic leveling agent, 6.00-8.00% of a cosolvent (ethylene glycol butyl ether), 0.60-0.70% of a DMEA neutralizer, 0.30-0.50% of an organosilicon substrate wetting agent, 41.00-44.70% of waterborne polyester thixotropic packing paste, 15.0-17.0% of water-based polyester black pulp and 12.80-15.80% of deionized water. The water-based low-temperature primer for the bicycle and the primer prepared by the preparation method have good constructability in various temperature and humidity conditions in all seasons, and can meet the requirements that the coating is not too crisp at a low temperature and not enough in strength at a high film thickness; and the interlaminar adhesiveness and various properties of a film are ensured.

Description

technical field [0001] The invention relates to the technical field of primers, in particular to a water-based low-temperature primer for bicycles and a preparation method thereof. Background technique [0002] At present, water-based coatings in the bicycle industry are still only in the promotion and trial stage of a small amount, and the process and performance are still being explored. The baking temperature is kept at around 140°C or even higher, and the low temperature is 115-120°C. The water-based paint is still relatively rare, and the process still maintains the crude oil-based process route, which is indeed a problem for water-based low-temperature (115-120°C) amino-based baking paint----this is because oil-based paint is optional There are plenty of materials and modified materials, but there is only one option for water-based amino resins at this temperature. This will inevitably require a lot of work on the main resin, auxiliary resins, and additives. At the sam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D7/63C09D7/65C09D7/61
CPCC08L2205/025C08L2205/035C09D7/63C09D7/65C09D167/00C08L67/00C08L63/00C08L33/04C08K5/17
Inventor 黄勤力王伟明徐晓明刘鑫
Owner CHANGZHOU HUASHI CHEM