Environment-friendly copper clad laminate and preparation method thereof

A copper-clad laminate, an environmentally friendly technology, applied in the field of copper-clad laminates, can solve the problems of phosphorus element environmental hazards and soil acidification, and achieve the effects of improved heat resistance and high cross-linking density

Active Publication Date: 2012-03-28
GOLDENMAX INTERNATIONAL TECHNOLOGY (ZHUHAI) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phosphorus will also cause harm to the environment after burning, such as acidifying the soil, etc.

Method used

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  • Environment-friendly copper clad laminate and preparation method thereof
  • Environment-friendly copper clad laminate and preparation method thereof
  • Environment-friendly copper clad laminate and preparation method thereof

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Embodiment Construction

[0011] The gist of the present invention is to add more environmentally friendly and flame-retardant elements N and Al to the resin material used for copper-clad laminates, make them match in a certain proportion, and use their synergistic effects to achieve flame-retardant burning effect.

[0012] Based on the above ideas, the resin material in the copper-clad laminate provided in this embodiment selects polyimide resin to modify the epoxy resin, and then adds carbonate-type aluminum-magnesium hydrotalcite to form N, Al, Mg(OH) 2 Composite flame retardant system, while heat resistance is also strongly guaranteed.

[0013] Among them, polyimide resin has outstanding heat resistance, and contains N element, the N content is about 9.0%, and has certain flame retardancy. In addition, the carbonate-type aluminum magnesium hydrotalcite, referred to as LDHs, has a chemical formula: [Mg 6 Al 2 (OH) 16 CO 3 ]·4H 2 O, which contains Al and Mg hydrates, is also referred to as alum...

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Abstract

The invention discloses an environment-friendly copper clad laminate and a preparation method thereof. A resin material in the laminate is an epoxy resin modified by a polyimide resin, and carbonate type aluminum magnesium hydrotalcite is added into a modified resin system. The preparation method for the environment-friendly copper clad laminate mainly comprises the following steps of: synthesizing the polyimide resin; and modifying the epoxy resin by using the polyimide resin, and preparing gelatinizing liquid by using the epoxy resin modified by the polyimide resin and the carbonate type aluminum magnesium hydrotalcite. The epoxy resin is modified by using the polyimide resin, so the crosslinking density of the environment-friendly copper clad laminate is much higher than that of the conventional epoxy resin; the environment-friendly copper clad laminate does not contain halogen or phosphorus, contains N, Al and Mg elements, and meets environmental protection requirements of European union restriction of hazardous substances (RoHS) and waste electrical and electronic equipment (WEEE) Directives; meanwhile, the heat resistance is also greatly improved, so that the environment-friendly copper clad laminate is more suitable for lead-free welding processes for printed circuit boards (PCB).

Description

technical field [0001] The invention belongs to the technical field of copper-clad laminates (referred to as copper-clad laminates), and specifically relates to the material properties and manufacturing process of copper-clad laminates. Background technique [0002] Copper-clad laminates for printed circuits all have flame-retardant properties. Traditional copper-clad laminates mostly use bromine (Br) in the halogen series as a flame retardant. FR-1 and FR-2 series in paper substrates, FR-4 and FR-5 series in glass cloth substrates, and CEM-1 and CEM-3 series in composite substrates. These copper clad laminates are all made of brominated epoxy resin or add other brominated flame retardants. In recent years, with the promulgation of EU RoHS and WEEE environmental protection directives, halogen elements have been included in the banned substances of electronic and electrical products because of the harmful dioxins produced after combustion. Therefore, the flame retardants us...

Claims

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Application Information

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IPC IPC(8): B32B27/04B32B27/38B32B27/18B32B37/06B32B37/10C08G59/40C08L63/02C08K13/04C08K7/14C08K3/26
Inventor 马憬峰
Owner GOLDENMAX INTERNATIONAL TECHNOLOGY (ZHUHAI) LTD
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