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Modification method for preparing polyvinyl chloride surface with high cohesive force

A polyvinyl chloride, high-adhesive technology, applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems of high thermal effect, lack of photochemical reaction effect, etc., achieve stable performance, fast preparation speed, and increase the effect of roughness

Active Publication Date: 2021-03-30
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And Yang Liu proposed in the "Applied Surface Science" magazine to use plasma to modify the surface of PVC, and also obtained a good adhesion modification effect, but the plasma treatment has a high thermal effect, and there is a lack of photochemical reaction in PVC. effect, with some limitations

Method used

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  • Modification method for preparing polyvinyl chloride surface with high cohesive force

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] After the ArF laser is reflected by a uniform beam, there will be a picture with a size of 1.2×1.2=1.44mm 2 The square thermal paper is placed on the three-dimensional mobile platform, after adjusting the three-dimensional mobile platform, and the position of the 8 times objective lens, and 1.44mm 2 A square-like light spot, and record the coordinates of the three-dimensional mobile platform as P at this time. Use ArF excimer laser to process the PVC surface at a certain speed, the beam defocus is 3mm, the laser frequency is 3hz, the moving speed of the three-dimensional moving table is 0.1mm / s, and the irradiation area of ​​the spot is 1.5mm 2 , set different laser voltages 17, 18, 19, 20, 21, 22, 23KV changes, the sample number is 1.1-1.7, the surface roughness obtained with a 3D profiler, the roughness began to show a decreasing trend, and the laser voltage was 19KV (optical density 27.47mJ / mm 2 ) Later, the roughness tends to increase gradually, and a certain degr...

Embodiment 2

[0034] After the ArF laser is reflected by a uniform beam, there will be a picture with a size of 1.2×1.2=1.44mm 2 The square thermal paper is placed on the three-dimensional mobile platform, after adjusting the three-dimensional mobile platform, and the position of the 8 times objective lens, and 1.44mm 2 A square-like light spot, and record the coordinates of the three-dimensional mobile platform as P at this time. Use ArF excimer laser to treat the PVC surface with a certain power, the beam defocus is 3mm, the laser frequency is 3hz, the laser energy is 23kv (the energy in the cavity is 49.06mJ, the measured energy is 12.14mJ, and the energy density is 8.10mJ / mm 2 ), the spot irradiation area is 1.5mm2, the laser scanning speed changes from 0.02, 0.04, 0.06, 0.08, 0.10, 0.12, 0.12, 0.14, 0.16, 0.18, 0.20mm / s, the sample number is 2.1-2.10, with 3D The surface roughness obtained by the profiler is 1.43μm when the moving speed is 0.20mm / s, and the roughness of the original s...

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Abstract

The invention discloses a modification method for preparing a polyvinyl chloride surface with a high binding force. Along the light travelling direction, a laser (1), a lens array (2), a convex lens (3), a square mask (4), a reflector (5), an object lens (6), a processed sample (7), and a three dimensional mobile platform (8) are arranged. An advanced ArF excimer laser direct writing technology isadopted to improve the microscopic morphology of a PVC material surface, increase the surface roughness, and enhance the mechanical interlocking of binding members. ArF excimer laser with high singlephoton energy (6.4 eV) can break the chemical bonds of a PVC surface, new bonds that are beneficial for binding are formed, the binding force is increased, and at the same time, the chemical propertyof the interior is maintained.

Description

technical field [0001] The invention relates to a modification method for preparing polyvinyl chloride surface with high cohesive force. The invention uses ArF excimer laser to directly write polyvinyl chloride (PVC) material to make it modified and have high cohesive force. Background technique [0002] Polyvinyl chloride (PVC) is the third most produced man-made plastic polymer in the world. Due to its relatively low production cost and excellent biochemical resistance, it is widely used in building materials, furniture, clothing, electronics, medical care and other fields. Especially when the PVC material is bonded with other materials (such as wood, steel), it can achieve the functions of waterproof, anti-chemical corrosion, and anti-wear, so as to realize the protection of the material, so it is also used for such as furniture edge banding production etc. In the bonding application of PVC and other materials, the bonding strength of the material is an important indicat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/2202G01N23/2273G01N21/3563
CPCG01N21/3563G01N23/2202G01N23/2273G01N2021/3572
Inventor 吴坚杜永均曾婷婷陈涛
Owner BEIJING UNIV OF TECH
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