Hardening treatment method for surface of plastic

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 properties

Inactive Publication Date: 2020-06-09
宁波晶牧太阳能科技有限公司
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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, spray the pressure at 32kg / cm2, use infrared rays to dry at 60°C for 20 minutes, and cool and level 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 screen to filter the light-curing paint, spray the pressure at 38kg / cm2, use infrared rays to dry at 65°C for 25 minutes, and cool and level 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, spraying pressure 35kg / cm2, use infrared drying at 63°C for 23 minutes, and cool and level 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 discloses a hardening treatment method for a surface of a plastic and relates to the technical field of plastic products. The method comprises the following steps of putting a to-be-treated plastic part in deionized water at 50-60 DEG C to be cleaned for 15-20 min, spraying the plastic part and drying the plastic part; filtering photocuring paint with a 600-1200-mesh screen, whereinthe spraying pressure is 32-38 kg / cm<2>, drying the plastic part for 20-25 min with infrared rays at 60-65 DEG C, and carrying out cooling and leveling for 1-3 min at room temperature; and forming a coating by ultraviolet curing, wherein the curing temperature is 40-50 DEG C and the time is 1-3 min. The method solves the problems that much paint is wasted and the cost is high as the surface of theplastic is hardened in the prior art.

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): B05D7/02B05D5/08B05D3/10B05D3/02B05D3/04B05D3/06
CPCB05D3/0263B05D3/0426B05D3/067B05D3/101B05D5/08B05D7/02
Inventor 曹兴海
Owner 宁波晶牧太阳能科技有限公司
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