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Plastic surface hardening treatment method

A hardening treatment and plastic technology, applied in the field of plastic products, can solve the problems of multi-cost, paint waste, etc., and achieve the effect of saving paint consumption, reducing production costs, and good surface performance

Inactive Publication Date: 2016-07-13
广西柳州中嘉知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a hardening treatment method for plastic surfaces, which can solve the problems of much paint waste and high cost in existing plastic surface hardening

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The hardening treatment method of the plastic surface of the present embodiment comprises the following steps: comprises the following steps:

[0014] A. Put the plastic parts to be treated into deionized water with a water temperature of 50°C and wash them for 20 minutes, and then spray them at a temperature of 40°C. After spraying, dry them again. Dry at 62°C for 5 minutes, dry at room temperature for 5 minutes, and perform the second drying at 65°C for 3 minutes;

[0015] B. Use a 1000-mesh screen to filter the light-curing paint, and the spraying pressure is 32kg / cm 2 , using infrared drying at 60°C for 20 minutes, cooling and leveling at room temperature for 3 minutes;

[0016] C. Curing the coating film formed in step B with ultraviolet light with a wavelength of 260 nm, the curing temperature is 40° C., and the curing time is 3 minutes.

Embodiment 2

[0018] A. Put the plastic parts to be treated in deionized water with a water temperature of 60°C for 15 minutes, and then spray at a temperature of 45°C. After spraying, dry them again. Drying is carried out twice, the first time Dry at 58°C for 8 minutes, dry at room temperature for 10 minutes, and perform the second drying at 62°C for 5 minutes;

[0019] B. Use a 600-mesh net to filter the light-curing paint, and the spraying pressure is 38kg / cm 2 , using infrared drying at 65°C for 25 minutes, cooling and leveling at room temperature for 1 minute;

[0020] C. Curing the coating film formed in step B with ultraviolet light with a wavelength of 272 nm, the curing temperature is 50° C., and the curing time is 1 min.

Embodiment 3

[0022] A. Put the plastic parts to be treated into deionized water with a water temperature of 55°C and wash them for 18 minutes, and then spray them at a temperature of 42°C. After spraying, dry them again, and dry them twice. Dry at 60°C for 7 minutes, dry at room temperature for 8 minutes, and perform the second drying at 63°C for 4 minutes;

[0023] B. Use a 1200-mesh screen to filter the light-curing paint, and the spraying pressure is 35kg / cm 2 , using infrared drying at 63°C for 23 minutes, cooling and leveling at room temperature for 2 minutes;

[0024] C. Use ultraviolet light with a wavelength of 265 nm to cure the coating film formed in step B, the curing temperature is 45° C., and the curing time is 2 minutes.

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Abstract

The invention relates to the technical field of plastic products and discloses a plastic surface hardening treatment method.The method includes steps: cleaning a to-be-treated plastic part in deionized water at 50-60 DEG C for 15-20min, spraying and drying; filtering photocuring paint through a 600-1200-mesh screen, performing infrared drying for 20-25min at 60-65 DEG C, and performing cooling and leveling for 1-3min at the room temperature, wherein a spray coating pressure is 32-38kg / cm<2>; subjecting a formed coating to ultraviolet curing for 1-3min at 40-50 DEG C.By the plastic surface hardening treatment method, the problems of high cost and high paint waste in existing plastic surface hardening are solved.

Description

technical field [0001] The invention relates to the technical field of plastic products, in particular to a hardening treatment method for plastic surfaces. Background technique [0002] Plastic is widely used in production or daily necessities because of its light weight, no rust, impact resistance, easy processing and other excellent properties. However, compared with metal, the surface hardness of plastic is relatively low, and the surface is easily damaged, especially for plastic parts such as mobile phone, camera and other electronic product displays or lenses. If the surface hardness is low, after long-term use, the plastic The surface of the parts is easy to be scratched and scratched, which seriously affects the visual effect and surface optical performance, so the surface hardening treatment is usually carried out on this kind of plastic sheet. The existing plastic surface hardening treatment mainly has two technologies, one is to soak the plastic with chemical age...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04
CPCC08J7/04
Inventor 吴春刚
Owner 广西柳州中嘉知识产权服务有限公司
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