High-strength and high-toughness polyphenylene sulfide composite material and preparation method thereof

Abstract

The invention relates to a high-strength and high-toughness polyphenylene sulfide composite material and a preparation method thereof. The composite material is prepared from the following raw materials in percentages by weight: 5 to 50% of polyphenylene sulfide resin, 5 to 50% of super-toughened nylon, 5 to 20% of a compatibilizing agent, 30 to 45% of glass fiber, 0 to 1% of an antioxidant, 0 to 1% of a light stabilizer and 0 to 1% of a lubricant. The preparation method for the polyphenylene sulfide composite material comprises the following steps: adding all components except the glass fiber into a high-speed mixer, carrying out dispersion mixing, then adding the obtained mixture into a double screw extruder, introducing the glass fiber into an extruder from a fiber inlet of the extruder, and carrying out mixing granulation so as to obtain the polyphenylene sulfide composite material. The polyphenylene sulfide composite material prepared by using the method provided by the invention has high strength, high toughness and extensive application range, and is especially applicable to preparation of bottom poles and sheaths of frame tent supports.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-strength and high-toughness polyphenylene sulfide composite material and a preparation method thereof. The polyphenylene sulfide composite material is suitable for the preparation of footings and sheaths for frame tent supports. Background technique [0002] Polyphenylene sulfide (PPS) is also known as polyphenylene sulfide and polyphenylene sulfide. Its molecular structure is that benzene rings are alternately connected with sulfur atoms at the para-position, and the molecular chain has great rigidity and regularity. Phenyl sulfide is a crystalline polymer with a crystallinity of up to 70%. It has high strength, modulus, good dimensional stability, low creep, high fatigue resistance, and good flame retardancy. Low hygroscopicity, no deformation under high temperature and high humidity conditions, good resistance to solvents and chemical corrosion. Polyphenylen...

AI Technical Summary

Problems solved by technology

Because the toughness of cross-linked PPS is worse than that of linear PPS, the toughening effect of the prepared composite material is limited, and the color of cross-linked PPS is dark brown, and its application is limited

[0005] Chinese patent CN 104072991A uses high strength nylon (PA) and polyphenylene sulfide to prepare PPS / PA alloy material. By adding compatibilizer and isocyanate chemical treatment agent, the impact strength of alloy material is improved, but it does not involve glass fiber reinforced modification

[0006] Chinese patent CN 103525088A prepared a glass fiber reinforced PPO / PA alloy material by adding a compatibilizer, but the toughening effect still needs to be improved

The polyphenylene sulfide material has a low water absorption rate, and changes in ambient temperature and humidity have little effect on its performance. It has the basis for preparing frame tent brackets and sheaths as raw materials, but the low toughness of the polyphenylene sulfide material must be solved. Weakness of poor cracking