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Modified polysulfone composite material as well as preparation method and application thereof

A composite material and polysulfone technology, applied in the field of modified polysulfone composite material and its preparation, can solve the problems of stress cracking, complex structure, low impact strength, etc., and achieve the effect of eliminating stress cracking

Inactive Publication Date: 2018-08-24
长沙五犇新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polysulfone (PSU) composites also have low impact strength. Generally, the notched impact strength of glass fiber reinforced polysulfone (PSU) is only 6kj / m 2 , especially its products are prone to stress cracking
Therefore, it is not suitable for components that require impact resistance, complex structures or metal inserts

Method used

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  • Modified polysulfone composite material as well as preparation method and application thereof
  • Modified polysulfone composite material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] The preparation method of modified polysulfone composite material is example with embodiment 1:

[0047] formula:

[0048] PSU: 10kg, PPSU: 1.0kg, PBT: 0.5kg, GF: 2.0kg, antioxidant Hostanoxp-EP: 40g, silicone: 60g, molybdenum disulfide: 0.5kg.

[0049] Preparation process:

[0050] ① After mixing PSU and PPSU, dry at 140°C for 4 hours, and dry PBT at 120°C for 4 hours.

[0051] ② Stir the antioxidant, polysilicone and molybdenum disulfide at 200rpm, mix for 5 minutes, and then add to the metering tank B.

[0052] ③Mix the dried PSU, PPSU, and PBT resins at 200rpm for 5 minutes, add them to the metering tank A, and add the glass fiber to the metering tank C.

[0053] ④ Turn on the twin-screw extruder, measure A, B, and C in proportion to the weighing feeder, and continuously feed the materials into the twin-screw extruder, heat and melt, mix and extrude, cool, and pelletize to obtain the modified PSU composite material .

[0054] ⑤ Blending extrusion process: extru...

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Abstract

The invention relates to a high-modulus and high-strength stress cracking and wear-resistant polysulfone composite material which is prepared by blending and compounding first resin, second resin, third resin, fibers and a certain amount of wear-resistant agent, a flow modifier and an antioxidant; the first resin is polysulfone (PSU) and has a dosage of 50-80 percent by weight; the second resin has a toughening effect; the third resin has a stress cracking-resistant effect; the second resin and the third resin are any two or three of polyphenylsulfone, a polyester polymer and polyamide resin;the sum of the dosages of the second resin and the third resin is 5-20 percent by weight; the fibers have an enhancing effect and have a dosage of 10-30 percent by weight; and the balance is the wear-resistant agent, the flow modifier and the antioxidant. The high-modulus and high-strength stress cracking and wear-resistant polysulfone composite material provided by the invention has excellent performance and can be widely applied to hot water system pump bodies, impellers, valve bodies, engine oil seals, oil pumps and valves, transmission bearing retainers, sliding bearings and other fields.

Description

technical field [0001] The invention relates to a polymer composite material and its preparation method and application, in particular to a modified polysulfone composite material and its preparation method and application. Background technique [0002] Polysulfone (PSU) is a heat-resistant engineering plastic with high rigidity, high temperature resistance, hydrolysis resistance, small linear expansion coefficient and excellent dimensional stability. In particular, it can be used for a long time at 200°C, and its mechanical properties are not affected by changes in ambient temperature. Widely used in heating systems, food machinery, medical equipment. Higher strength polysulfone (PSU) composite materials can be prepared by glass fiber (GF) and carbon fiber (CF) reinforcement modification for mechanical rotating parts, sealing parts, bearings, etc. [0003] Due to the small output and high price of polysulfone (PSU), it was mainly used in special fields such as military eq...

Claims

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Application Information

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IPC IPC(8): C08L81/06C08L67/02C08L83/04C08L77/06C08K7/14C08K3/30C08K7/06
CPCC08K2003/3009C08L81/06C08L2201/08C08L2205/025C08L2205/035C08L67/02C08L83/04C08L77/06C08K7/14C08K3/30C08K7/06
Inventor 邓凯桓陈如意刘爱学邓如生
Owner 长沙五犇新材料科技有限公司
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