Method for improving joint strength of polyethylene and metalwork

A connection strength and polyethylene technology, which is applied in the field of strengthening the connection strength of polyethylene with metal parts and copper metal parts, can solve the problems of unstable performance, bubble accumulation, high cost, etc., and achieve good product consistency, stable performance, The effect of improving overall performance

Active Publication Date: 2014-01-01
SHENZHEN JINRUI ELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although they have certain effects, they often lead to disadvantages such as high cost, unstable performance, low efficiency, and prone to bubble accumulation during bonding.

Method used

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  • Method for improving joint strength of polyethylene and metalwork
  • Method for improving joint strength of polyethylene and metalwork

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 100 grams of high-density polyethylene HDPE (Phillips HXM-50100-001, melting point 130-150 ° C, density 0.943 g / cm3, Vicat softening point 124 ° C), 186 grams of conductive carbon black N990 and 46 grams of magnesium hydroxide , in a high-speed kneader at 170°C to knead into a dough and then knead for 15 minutes, make a triangular bag and then crush it. The polyethylene composite sheet is subjected to stress relief and shrinkage under 130°C and 5MPa hot pressing. Pass the treated polyethylene composite sheet through C o 60 irradiation, the irradiation dose is 15Mard, the irradiated polyethylene composite sheet is covered with roughened copper film on both sides, and pressed at 185°C and 5MPa for 3 minutes to form a polyethylene copper clad sheet. Test the peel strength according to the national standard "GB / T 13557-92 Test Method for Flexible Materials for Printed Circuits". After the test, observe the color of the peeled copper film on the polyethylene composite, and ...

Embodiment 2

[0021] Polyethylene compound manufacture step is the same as embodiment 1, polyethylene compound is broken into pellets, through C o 60 irradiation, the irradiation dose is 7Mard, weigh 10g of the irradiated polyethylene composite broken material, place it on the roughened copper film, and then place a layer of roughened copper film, at 185°C, 15MPa Press down and press for 3 minutes to form a polyethylene copper clad sheet.

Embodiment 3

[0023] 12 grams of linear low-density polyethylene LLDPE (Sinopec DFDC-7050, density 0.923g / cm3), 23 grams of high-density polyethylene HDPE (Taiwan Formosa Plastics 8003, density 0.958g / cm3, melting point 134 ° C, softening point 127 ° C ), 11 grams of ethylene-vinyl acetate copolymer EVA and 25 grams of conductive carbon black N990, 27 grams of aluminum hydroxide are mixed to form polyethylene composites. The composite is crushed into pellets, and then molded to form a 1.0-2.0mm plate, and the pellets and the plate are subjected to C o 60 irradiation, the irradiation dose is 0.75Mard. After irradiation, the fixed mold is used to cover the film and heat the molding to bond the smooth copper foil and the polyethylene compound. Test its bonding strength according to Example 1.

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Abstract

The invention provides a method for improving joint strength of polyethylene and metalwork. The method comprises the following steps: a, subjecting polyethylene or a polyethylene compound to irradiation cross-linking; b, fusing the polyethylene or polyethylene compound having undergone irradiation cross-linking and subjecting the metalwork and the fused polyethylene or polyethylene compound to mould pressing and bonding; and c, slowly cooling to room temperature after mould pressing and bonding of the metalwork and the fused polyethylene or polyethylene compound. Or the method comprises the following steps: d, subjecting the polyethylene or polyethylene compound used for connection with the metalwork to irradiation cross-linking; and e, heating the metalwork and bonding the heated metalwork onto the surface of the polyethylene or polyethylene compound through pressurization or embedding the heated metalwork into the polyethylene or polyethylene compound. The method has the characteristics of high joint strength, high manufacturing efficiency, good product consistency, low manufacturing cost, economy, environment friendliness, etc.

Description

【Technical field】 [0001] The invention relates to a connection method between polymer materials and metal materials, in particular to a method for enhancing the connection strength between polyethylene and metal parts, especially copper metal parts. 【Background technique】 [0002] Metal foil or metal inserts and polymer materials hot-press coating or connection technology are widely used in high-grade decorative materials, conductive circuit board manufacturing and other fields. In the prior art, metal foils, inserts, etc. are usually bonded to the surface of the polymer material by pressure heat sealing while the polymer material is heated and formed, so that the polymer material presents a metallic texture that it does not have. And electrical conductivity and other characteristics, while making the product have the characteristics of light weight, heat preservation, impact resistance and so on. However, due to the poor compatibility of polymer materials, especially polye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J5/02
Inventor 宋昌清梁凤梅田宗谦
Owner SHENZHEN JINRUI ELECTRONICS MATERIAL
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