A glass fiber reinforced polyphenylene sulfide compound with high bonding strength to metal and preparation method thereof

Abstract

The invention relates to the polyphenylene sulfide resin processing preparation field, and in particular relates to a glass fiber reinforced polyphenylene sulfide composite with high metal bonding strength and a preparation method thereof; the glass fiber reinforced polyphenylene sulfide composite comprises the following raw materials by weight: 51.7-81.2 parts of polyphenylene sulfide resin, 0-40 parts of continuous glass fiber; 5-13 parts of a toughening agent; 0.2-1 part of a weathering agent; 0.3-0.5 part of an antioxidant; 0.3-0.5 part of a lubricant and 2-4 parts of an additive A, the glass fiber reinforced polyphenylene sulfide composite not only has excellent weathering properties and excellent metal bonding strength, after metal bonding and anode oxidation treatment, the glass fiber reinforced polyphenylene sulfide composite may not discolor, the bonding strength decay is small, the glass fiber reinforced polyphenylene sulfide composite also has excellent weather resistance and low dielectric properties and loss factor, can satisfy the customer demand of different colors, and greatly improves the product appearance design freedom degree.

Description

technical field [0001] The invention relates to the field of polyphenylene sulfide resin processing and preparation, in particular to a glass fiber reinforced polyphenylene sulfide compound with high bonding strength with metal and a preparation method thereof. Background technique [0002] In recent years, with the diversification of people's demand for the appearance of electronic products, the appearance quality of electronic products is constantly changing. The single metal or plastic casing of electronic products can no longer meet the diversified market needs. Combined electronic product casings have become people's new favorite. At present, some of the more popular electronic product bodies on the market are the products of the combination technology of aluminum alloy surface treatment and resin polymer. [0003] Polyphenylene sulfide resin (PPS), also known as polyphenylene sulfide, PPS plastic is a light yellow, brown, high crystallinity, hard and brittle polymer. ...

AI Technical Summary

Problems solved by technology

However, the existing polyphenylene sulfide material has low impact strength, poor bending resistance, poor weather resistance, easy to turn yellow when used outdoors, and single color, which is not suitable for light-colored and bright-colored products. constant higher

These limit the application range of polyphenylene sulfide materials in some fields, especially in the field of electronics after bonding with metals

[0004] Chinese invention patent (CN201210001111) discloses a low dielectric polyphenylene sulfide composite material and its preparation method. The composition achieves low dielectric properties by adding polytetrafluoroethylene (hereinafter referred to as PTFE) with low dielectric properties , although the polyphenylene sulfide composite material with a dielectric property of 2.8 was obtained, the melting point of PTFE is 330°C, and the melting point of polyphenylene sulfide is 280°C. PTFE itself is relatively difficult to process, and the molding shrinkage rate is very large (3.0%); The prepared polyphenylene sulfide / polytetrafluoroethylene alloy reinforced material has a shrinkage rate much higher than that of pure polyphenylene sulfide glass fiber reinforced composites. After the polyphenylene sulfide / polytetrafluoroethylene alloy reinforced material is bonded to metal Due to the impact of shrinkage, it will lead to relatively large internal stress, which will affect the subsequent computer numerical control processing

Moreover, PTFE is a non-polar polymer, and the bonding effect with metal is not good. Although the invention patent does not specifically describe the effect of adding polytetrafluoroethylene on the bonding strength of metal, the applicant found that it has the above-mentioned effects during the research process. The problem

[0005] Chinese invention patent (CN201310363040) discloses a polyphenylene sulfide composite material and its preparation method. The composition forms an alloy by adding different types of polyamide and polyphenylene sulfide, which improves the processing type of polyphenylene sulfide and reduces the Cost, although a composition with good comprehensive mechanical properties has been obtained, it has been found that the addition of polyamide will inevitably lead to an increase in the water absorption of the material, sacrificing the advantages of low water absorption of polyphenylene sulfide. During the injection molding process, it is necessary It takes longer to dry the material, and the dielectric properties, weather resistance and other related properties of the composite material have not been effectively improved

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