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Liquid silica gel grafted modified toughened polyphenylene sulfide and preparation method thereof

A technology of liquid silica gel and graft modification, which is applied in the field of polyphenylene sulfide modification and polymer materials, and can solve the problems affecting the thermal stability and temperature resistance, corrosion resistance, and heat resistance of polyphenylene sulfide. Affect material toughness and other issues, to achieve the effect of improving anti-aging performance and anti-ultraviolet performance, increasing strength, improving mechanical properties of toughness

Pending Publication Date: 2022-06-03
四川中科兴业高新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned existing modification methods improve the performance of polyphenylene sulfide by adding glass fiber, carbon fiber, elastomer, inorganic lubricating filler, etc. However, these traditional filling and toughening modification methods lose the The inherent advantages of sulfide, poor heat resistance, etc. For example, the addition of inorganic lubricating fillers will affect the toughness of the material, and the addition of elastomers will affect the thermal stability, temperature resistance, and corrosion resistance of polyphenylene sulfide.

Method used

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  • Liquid silica gel grafted modified toughened polyphenylene sulfide and preparation method thereof
  • Liquid silica gel grafted modified toughened polyphenylene sulfide and preparation method thereof
  • Liquid silica gel grafted modified toughened polyphenylene sulfide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The first stage: 96 parts of polyphenylene sulfide resin, 1.5 parts of vinyl silicone oil, 0.3 parts of sodium peroxide, and 2.2 parts of zinc oxide are fully mixed by a high-speed mixer for 6 minutes, and then melted, extruded, and reacted by a twin-screw extruder. Cooling, drying, dicing, and extruding the mixed material through a twin-screw extruder. The temperature of each zone of the extruder from the feeding section to the die head is 260 °C in the first section, 300 °C in the second section, and 300 °C in the second section. The third stage is 300°C, the fourth stage is 280°C, the fifth stage is 270°C, the sixth stage is 260°C, the seventh stage is 260°C, the eighth stage is 240°C, the ninth stage is 240°C, the tenth stage is 240°C, and the tenth stage is 240°C. The first stage is 240°C, the twelfth stage is 270°C, the thirteenth stage is 280°C, the fourteenth stage is 285°C, the die head is 290°C, the length-diameter ratio of the extrusion screw is 52:1, and the ...

Embodiment 2

[0039] The first stage: 92.5 parts of polyphenylene sulfide resin, 4 parts of methyl trifluoropropyl silicone oil, 0.3 parts of potassium hydrogen persulfate, 1.2 parts of accelerator ZDMC, fully mixed by a high-speed mixer for 5 minutes, and passed through a twin-screw extruder Melt reaction, extrusion, cooling, drying, dicing, and extruding the mixed material through a twin-screw extruder. The second stage is 290°C, the third stage is 290°C, the fourth stage is 280°C, the fifth stage is 270°C, the sixth stage is 260°C, the seventh stage is 260°C, the eighth stage is 240°C, the ninth stage is 240°C, and the tenth stage is 240°C. Section 240℃, eleventh section 240℃, twelfth section 270℃, thirteenth section 280℃, fourteenth section 285℃, die head 290℃, extrusion screw length-diameter ratio is 52:1, extrusion The rotation speed of the screw is 300 rev / min, and the feeding speed is 15 rev / min to obtain milky white grafted polyphenylene sulfide resin particles.

[0040] The secon...

Embodiment 3

[0042] The first stage: 91 parts of polyphenylene sulfide resin, 4.5 parts of vinyl silicone oil, 0.5 parts of sodium peroxide, 3.5 parts of accelerator TT, fully mixed by a high-speed mixer for 8 minutes, melted and reacted by a twin-screw extruder, extruded After discharging, cooling, drying and dicing, the mixed material is extruded through a twin-screw extruder. The temperature of each zone of the extruder from the feeding section to the die head is 240 °C in the first section and 280 °C in the second section. ℃, the third section 280℃, the fourth section 290℃, the fifth section 280℃, the sixth section 270℃, the seventh section 280℃, the eighth section 260℃, the ninth section 230℃, the tenth section 250℃, The eleventh stage is 250°C, the twelfth stage is 260°C, the thirteenth stage is 270°C, the fourteenth stage is 280°C, the die head is 290°C, the length-diameter ratio of the extrusion screw is 52:1, and the extrusion screw speed is 340 / min, the feeding speed is 11 rev / m...

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Abstract

The invention discloses liquid silica gel grafted, modified and toughened polyphenylene sulfide and a preparation method thereof, relates to the technical field of high polymer materials, and solves the technical problem that the original advantages of polyphenylene sulfide are lost by the existing filling and toughening modification method. Comprising the following steps: step 1, uniformly dispersing liquid silica gel, polyphenylene sulfide resin, an initiator and an accelerant, performing a melting reaction through a first double-screw extruder, extruding, cooling, pelletizing, and drying to obtain grafted polyphenylene sulfide resin particles; 2, uniformly dispersing the grafted polyphenylene sulfide resin particles, fibers, a coupling agent, an antioxidant and a processing aid, and extruding and granulating through a second double-screw extruder; according to the invention, the polyphenylene sulfide material is modified and toughened by adopting a dynamic vulcanization technology, so that the mechanical property, the electrical property, the wear resistance, the fatigue resistance, the thermal oxidation resistance and the ultraviolet resistance of the modified and toughened polyphenylene sulfide material are improved, and the original excellent characteristics of the polyphenylene sulfide are maintained.

Description

technical field [0001] The invention relates to the technical field of polymer materials, and more particularly to the technical field of polyphenylene sulfide modification. Background technique [0002] In recent years, polyphenylene sulfide, as the sixth largest engineering plastic, has received high attention and wide application. Polyphenylene sulfide has excellent thermal stability, flame retardancy, corrosion resistance and electrical properties, as well as good Mechanical properties and dimensional stability are widely used in electrical and electronic, machinery manufacturing, automobile manufacturing, chemical instrumentation and aerospace industry, as well as plastic-substituting metals. However, the biggest disadvantage of polyphenylene sulfide is that the material is brittle and has poor toughness. Poor abrasion resistance, poor UV resistance and easy discoloration by oxidation limit the application field of polyphenylene sulfide. [0003] Application No. CN2012...

Claims

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Application Information

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IPC IPC(8): C08L81/02C08L83/07C08L83/08C08K7/14C08K7/10C08K7/06
CPCC08L81/02C08L2201/08C08L2201/02C08L83/04C08L83/08C08K7/14C08K7/10C08K7/06
Inventor 冯杰刘洪姜希猛陈云陈俊邹亮
Owner 四川中科兴业高新材料有限公司
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