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Environment-friendly dual-curing vacuum coating primer special for automobile wheel hub

A dual-curing technology for automobile wheels, which is applied in the direction of epoxy resin coatings, coatings, polyurea/polyurethane coatings, etc., can solve the problems of uncurable shadow parts and weak metal surface adhesion, and achieve strong adhesion and Good plating performance, good leveling and covering effect

Inactive Publication Date: 2012-09-26
YIXING HONGTAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Only one layer of primer can cover the defects of the material well; the coating is good and can withstand high temperature of 170 ℃; the shadow part can be cured by itself through isocyanate, which solves the problem of poor adhesion of ordinary UV primer on the metal surface. The problem that the shadow part cannot be cured

Method used

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  • Environment-friendly dual-curing vacuum coating primer special for automobile wheel hub
  • Environment-friendly dual-curing vacuum coating primer special for automobile wheel hub
  • Environment-friendly dual-curing vacuum coating primer special for automobile wheel hub

Examples

Experimental program
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Embodiment Construction

[0027] The present invention is further described below with specific examples, which are only used for illustration and do not limit the scope of the invention.

[0028] Preparation of primer:

[0029] (1) put reactive diluent, aliphatic epoxy acrylate, aliphatic urethane diacrylate and phenolic epoxy acrylate into the reaction kettle, heat and stir at 45°C for 1 hour to dissolve;

[0030] (2) add the urethane acrylate containing isocyanate group and the photoinitiator to the reactor again, and stir for 0.5h;

[0031] (3) Finally, add the auxiliary agent into the reaction kettle, stir at a high speed for 0.5h, filter with a 500-mesh filter cloth, and finally pack it in a barrel.

[0032] The following examples were prepared as described above.

[0033] Recipe for primer:

[0034] Each embodiment is prepared according to the mass ratio in Table 1 and Table 2, and the special dual-curing vacuum coating primer of the present invention is prepared for the environment-friendly ...

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Abstract

The invention discloses an environment-friendly dual-curing vacuum coating primer special for an automobile wheel hub, which is prepared from the following components in percentage by mass: 25-35% of NCO-containing polyurethane acrylate, 5-10% of aliphatic polyurethane diacrylate, 5-10% of phenolic epoxy acrylate, 10-20% of aliphatic epoxy acrylate, 20-35% of reactive diluent, 1-5% of photoinitiator and 0.1-1% of assistant. The primer has the advantages of energy saving, environment friendliness, strong adhesive force on the metal surface, excellent leveling property and high gloss; the primer can well cover defects on the material only after one primer coating is applied, thereby having favorable covering power; the primer has favorable adhesive force with both the wheel hub material andthe vacuum coating layer; after the primer is baked at 170 DEG C for 2 hours, the surface looks no difference; and the primer also has recoating property.

Description

technical field [0001] The invention belongs to the dual-curing technology in the field of ultraviolet light-curing coatings, in particular to a dual-curing vacuum electroplating primer for automobile wheel hubs. Background technique [0002] With the rapid development of my country's automobile industry, the demand for automobile hubs as an accessory product for automobiles will increase sharply. Wheel hub materials mainly include steel materials, alloy materials, and composite materials. The surface treatment methods are mainly coating (water electroplating and vacuum electroplating). Among them, the water electroplating method has disadvantages such as complex process, high cost, high energy consumption, and serious environmental pollution, and is bound to be eliminated by wheel manufacturers. The vacuum coating method can not only overcome the shortcomings of the electroplating method, but also can obtain a bright, heat-resistant and excellent decorative surface, and wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D163/10
Inventor 吴玉民戴梁锋
Owner YIXING HONGTAI CHEM
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