Polyphthalamide (PPA) composite material with high temperature resistance and abrasion resistance and preparation method of PPA composite material

A technology of polyphthalamide and phthalamide, which is applied in the field of polyphthalamide composite materials and its preparation, can solve problems such as low lifespan and unstable mechanical properties, and ensure mechanical properties and durability Effect of thermal wear resistance, surface gloss and dimensional stability improvement

Inactive Publication Date: 2015-04-01
ANHUI KEJU NEW MATERIALS
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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a high temperature and wear-resistant polyphthalamide composite material and its preparation method, aiming to solve the problem of using the existing polyphthalamide composite material to make parts. Technical problems of low life and unstable mechanical properties under high temperature conditions

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  • Polyphthalamide (PPA) composite material with high temperature resistance and abrasion resistance and preparation method of PPA composite material
  • Polyphthalamide (PPA) composite material with high temperature resistance and abrasion resistance and preparation method of PPA composite material
  • Polyphthalamide (PPA) composite material with high temperature resistance and abrasion resistance and preparation method of PPA composite material

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preparation example Construction

[0037] The preparation method comprises the steps of:

[0038] S101, the step of weighing raw materials. Each raw material is weighed according to the mass ratio of the raw materials of the high-temperature and wear-resistant polyphthalamide composite material.

[0039] S102, a drying treatment step. The raw materials taken symmetrically are dried.

[0040] S103, the initial mixing step. Put the dried polyphthalamide into the mixer, then add antioxidant, lubricant and nucleating agent, and mix thoroughly.

[0041] S104, a remixing step. Add the anti-wear agent into the mixer and mix thoroughly again. After the mixing is completed, the obtained material is put into a drying oven for drying treatment.

[0042] S105. Melting and granulating step. The dried material is put into a twin-screw extruder, melted and reacted, and glass fiber is added to carry out reinforced filling extrusion granulation, wherein the glass fiber is added from the fourth section of the twin-screw ex...

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Abstract

The invention is applicable to the field of high molecular materials and provides a polyphthalamide (PPA) composite material with high temperature resistance and abrasion resistance and a preparation method of the PPA composite material. The PPA composite material with high temperature resistance and abrasion resistance comprises the following raw material components in percentage by mass: 40-60% of PPA, 5-15% of an abrasion-resistant agent, 30-45% of a filling and reinforcing agent, 0.2-0.6% of an antioxidant, 0.2-0.8% of a lubricating agent and 0.3-0.6% of a nucleating agent. The preparation method of the PPA composite material with high temperature resistance and abrasion resistance comprises the following steps: sorting, mixing in a mixer, putting the obtained mixture into a double-screw extruder, carrying out melt extrusion, and pelletizing. The PPA composite material with high temperature resistance and abrasion resistance has the advantages that the abrasion-resistant agent is introduced into PPA, so that abrasion resistance and self-lubricating property of PPA are improved, and glass fibers are adopted for carrying out enhancement processing, and thus a modified composite material with excellent performance is obtained, mechanical properties and heat resistance and abrasion resistance properties are guaranteed, and the PPA composite material with high temperature resistance and abrasion resistance can be applied to a transmission part under high temperature condition.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-temperature and wear-resistant polyphthalamide composite material and a preparation method thereof. Background technique [0002] Polyphthalamide (PPA) resin is a semi-aromatic polyamide material made of phthalic acid. It has the advantages of high rigidity, high heat resistance, high strength, and excellent electrical properties. At the same time, its thermal properties are also very good. High, after adding glass fiber reinforcement, the heat distortion temperature can reach 280 ℃. In the state of high temperature and high humidity, the tensile strength of polyphthalamide is 20% higher than that of nylon 6, higher than that of nylon 66; the flexural modulus of polyphthalamide material is 20% higher than that of nylon, so polyphthalamide Diformamide can be used in more severe environments. However, due to the high temperature environment and high w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L27/18C08K13/04C08K7/14C08K3/04C08K3/30C08K5/134C08K5/526C08K5/098B29C47/92B29C48/92
CPCC08L77/06B29C48/92B29C2948/9258B29C2948/92704C08K3/30C08K7/14C08K13/04C08K2003/3009C08L2201/08C08L2205/24C08L27/18
Inventor 徐东付俊祺
Owner ANHUI KEJU NEW MATERIALS
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