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Environment-friendly method for conducting surface roughening on liquid crystal polymer devices before chemical plating

A liquid crystal polymer, environmentally friendly technology, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve problems such as explosion, increase production cost, increase management cost and risk, and achieve simple operation steps , Post-processing simple and easy effects

Pending Publication Date: 2021-04-13
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has the following problems: (1) In the Pengrun stage, flammable and explosive organic solvents such as ethylene glycol monomethyl ether, etc. are required, and N-dimethylformamide is still a 2A carcinogen, and the Pengrun stage should be carried out above 50°C. During moistening treatment, the requirements for personal protection and production safety are extremely high; (2) High-concentration potassium permanganate-strong alkali mixed solution is used in the corrosion stage. Potassium permanganate is a strong oxidant, and organic solvents are explosive. Dangerous, increasing management costs and risks. Most importantly, because manganese is a heavy metal, electroplating parks generally require separate storage and treatment of potassium permanganate wastewater at this stage, which increases production costs.

Method used

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  • Environment-friendly method for conducting surface roughening on liquid crystal polymer devices before chemical plating
  • Environment-friendly method for conducting surface roughening on liquid crystal polymer devices before chemical plating
  • Environment-friendly method for conducting surface roughening on liquid crystal polymer devices before chemical plating

Examples

Experimental program
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Effect test

Embodiment 1

[0034] In this embodiment, a flat LCP material is used for roughening treatment, and the dimensions of length, width and height are 50 mm×50 mm×1 mm.

[0035] The method for chemically roughening the surface of liquid crystal polymers in this embodiment includes the following steps:

[0036] (1) Clean the LCP material with absolute ethanol and rinse with deionized water;

[0037] (2) Add 1.0mol / L potassium persulfate solution to the reaction kettle, heat it to 65°C and keep it warm; immerse the outlet pipe of the ozone generator in the potassium persulfate solution, open the generator, and pass in ozone; Put into the solution and start to vibrate; put the LCP into the above potassium persulfate solution, and treat it for 8 hours under the combined action of ozone and ultrasonic waves; the ozone feeding rate in this embodiment is 100L / min.

[0038] (3) Take out the LCP, rinse it with tap water, immerse it in 0.1mol / L oxalic acid deoxidizing solution, and soak it for 2 minutes ...

Embodiment 2

[0046] This example is basically the same as Example 1, except that the LCP material uses a liquid crystal polymer 5G antenna box cover plate from a certain company as the experimental sample. The cover plate has a flat area, pins, through holes, blind holes, right-angled and so on, the structure is more complicated. Such as Figure 5 As shown, the cover plate is trapezoidal as a whole, with a length of 5cm and a width of 3.5cm. The diameter of the stitches and blind holes is 0.5mm×1mm, spread all over the cover, and there is a groove with a depth of 1mm and a width of 2mm under the stitches.

[0047] After roughening, samples were cut and sampled in various regions, and SEM observation found that the roughening effect was consistent with that of Example 1; and no swelling occurred during the roughening process, and the microstructure did not deform, which had little effect on the size of stitches and holes. After roughening, The cover plate and the microstructure of the box ...

Embodiment 3

[0067] The size of the LCP material in this embodiment is the same as that in Embodiment 1.

[0068] The surface roughening method before the chemical plating of the LCP material of the present embodiment comprises the following steps:

[0069] (1) Clean the LCP material with absolute ethanol and rinse with deionized water;

[0070] (2) Add 1.5mol / L potassium persulfate solution into the reaction kettle, heat it to 50°C and keep it warm; immerse the outlet pipe of the ozone generator in the potassium persulfate solution, open the generator, and pass in ozone; Put into the solution and start shaking; put the LCP into the above potassium persulfate solution, and treat it for 4 hours under the combined action of ozone and ultrasonic waves;

[0071] (3) Take out the LCP, rinse it with tap water, immerse it in 0.2mol / L oxalic acid deoxidizing solution, and soak it at 30°C for 3-5 minutes; after taking it out, rinse it with distilled water to complete the surface roughening treatme...

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Abstract

The invention discloses an environment-friendly method for conducting surface roughening on liquid crystal polymer devices before chemical plating. The environment-friendly method for conducting surface roughening on the liquid crystal polymer devices before chemical plating comprises the following steps: placing liquid crystal polymer (LCP) materials in potassium persulfate roughening liquid, introducing ozone, and conducting roughening treatment under the action of ultrasonic waves; and placing liquid crystal polymers subjected to roughening treatment in an oxidant-removing solution, and then taking out the liquid crystal polymers for cleaning to obtain roughened surfaces. According to the environment-friendly method for conducting surface roughening on the liquid crystal polymer devices before chemical plating, by using low-concentration potassium persulfate as the roughening liquid in combination with ring opening and oxidizing by the ozone and the cavitation and crushing action of the ultrasonic waves, the surfaces of the compound materials are subjected to roughening treatment, adopted technology methods and an adopted formula are environmentally friendly, no flammable, combustible or carcinogenic solvents are used, no high-temperature high-pressure operation is conducted, conventional equipment of an electroplate factory is adopted, the operation steps are simple, and the environment-friendly method for conducting surface roughening on the liquid crystal polymer devices before chemical plating has a good effect, and is especially suitable for large-scale surface roughening treatment of LCP devices of the fields of electronics, communication and micro-electronic machines.

Description

technical field [0001] The invention relates to a surface treatment method, in particular to a method for roughening the surface of a liquid crystal polymer. Background technique [0002] In recent years, liquid crystal polymer (Liquid Crystal PolVmer, LCP) has excellent physical and chemical properties, such as heat resistance and corrosion resistance, low cost, low loss of high-frequency electromagnetic signals, wide frequency range of use, stable dielectric constant, and high strength. High, light weight, and its injection molding performance is good; therefore, as a precision injection molded part, it is increasingly widely used in the fields of micro-electromechanical, electric power, electronics, communication, navigation and positioning, reconnaissance, and electronic countermeasure systems. Coating metal on the surface of LCP materials can prepare materials with integrated structure and function to replace the original metal parts. Among them, copper clad copper foil...

Claims

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Application Information

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IPC IPC(8): C23C18/22
CPCC23C18/22
Inventor 史兴岭任建徐玲利王宇鑫
Owner JIANGSU UNIV OF SCI & TECH
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