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Food-grade high-heat-resistance PPS composite material and preparation method thereof

A composite material and high heat-resistant technology, applied in the field of polymer materials, can solve the problems of high cost, high energy consumption, and high injection molding temperature of PPS+glass fiber, and achieve simple and controllable production process, high heat resistance, and good fluidity Effect

Inactive Publication Date: 2017-01-25
深圳市高科塑化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a low-cost, low-energy food-grade high heat-resistant PPS composite material and Its preparation method has simple process and convenient operation

Method used

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  • Food-grade high-heat-resistance PPS composite material and preparation method thereof
  • Food-grade high-heat-resistance PPS composite material and preparation method thereof
  • Food-grade high-heat-resistance PPS composite material and preparation method thereof

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preparation example Construction

[0034] The preparation method of described food-grade high heat-resistant PPS composite material comprises the following steps:

[0035] Step 1: Weigh the following components according to parts by weight: 18-51.8 parts of polyphenylene sulfide raw powder; 5-15 parts of polyethylene terephthalate slices; 1-3 parts of toughening agent; heat stabilizer 0.3-1 part; lubricant 0.3-1.0 part; glass fiber 40-60 parts;

[0036] Step 2: Mix the polyphenylene sulfide raw powder, polyethylene terephthalate slices, toughening agent, heat stabilizer, and lubricant at a medium speed for 3 to 7 minutes;

[0037] Step 3: Then mix the raw materials mixed in step 2 with glass fibers, and then melt and extrude them through a twin-screw extruder to granulate. The process conditions of the twin-screw extruder are: the temperature in the first zone of the twin-screw extruder 240~300℃, the temperature of zone 2 is 240~300℃, the temperature of zone 3 is 240~300℃, the temperature of zone 4 is 240~300℃...

preparation Embodiment 1

[0039] Select the following raw materials in parts by weight: 51.8 parts of PPS (PPS-hb), 5 parts of PET (CH-610), 0.3 parts of heat stabilizer (GX2921), 1 part of toughening agent (SEBS-g-GMA), lubricant (TAF) 0.3 parts, mixed in a medium-speed mixer for 5 minutes, then blended with 40 parts of 988A glass fiber, extruded through a twin-screw extruder with a melting temperature of 240-300 ° C, and pelletized. Among them, the temperature setting of each section of the twin-screw extruder is: 240°C in the first zone, 280°C in the second zone, 300°C in the third zone, 290°C in the fourth zone, 280°C in the fifth zone, 270°C in the sixth zone, and 260°C in the seventh zone. for 30 seconds.

preparation Embodiment 2

[0041] Select the following raw materials in parts by weight: 43.2 parts of PPS (PPS-hb), 5 parts of PET (CH-610), 0.5 parts of heat stabilizer (GX2921), 1 part of toughening agent (SEBS-g-GMA), lubricant (TAF) 0.5 parts, mixed in a medium-speed mixer for 5 minutes, then blended with 50 parts of 988A glass fiber, extruded through a twin-screw extruder with a melting temperature of 240-300 ° C, and pelletized. Among them, the temperature setting of each section of the twin-screw extruder is: 240°C in the first zone, 280°C in the second zone, 300°C in the third zone, 290°C in the fourth zone, 280°C in the fifth zone, 270°C in the sixth zone, and 260°C in the seventh zone. for 30 seconds.

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Abstract

The invention relates to a food-grade high-heat-resistance PPS composite material. The PPS composite material comprises the following components in parts by weight: 18-51.8 parts of polyphenylene sulfide raw powder, 5-15 parts of polyethylene glycol terephthalate slices, 1-3 parts of a toughening agent, 0.3-1 part of a heat stabilizer, 0.3-1.0 part of a lubricating agent and 40-60 parts of glass fibers, wherein the polyphenylene sulfide raw powder is linear polyphenylene sulfide; the toughening agent is a glycidyl methacrylate grafted hydrogenated styrene-butadiene-styrene segmented copolymer; the heat stabilizer is N,N'-bis(3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl)hexamethylene diamine; the lubricating agent is fatty acid amide; the glass fibers are long glass fibers and alkali-free jointed rovings for thermoplastic plastics, and the diameter of the long glass fiber is 3-5 microns. According to the food-grade high-heat-resistance PPS composite material which is low in cost and easy to process, the problems that existing glass fiber reinforced polyphenylene sulfide raw powder is overhigh in cost and processing energy consumption, does not meet food-grade requirements and the like in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a food-grade high heat-resistant PPS composite material and a preparation method thereof. The material can be widely used in the fields of sanitary ware, household appliances, electronic appliances, auto parts and the like. Background technique [0002] Polyphenylene sulfide (PPS) is a crystalline polymer with phenylthio groups in its main chain. The melting point of PPS raw powder is usually between 275 and 290 degrees. The defect of unmodified PPS is low strength and easy stress cracking of the product. PPS reinforced by glass fiber modification has high rigidity, and there is a crisp steel sound when it falls to the ground. Polyethylene terephthalate (English: Polyethylene terephthalate, PET for short) is a milky white or colorless transparent highly crystalline polymer. Before adding modifying additives, the crystallization speed is very slow, the mold temperature i...

Claims

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Application Information

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IPC IPC(8): C08L81/02C08L67/02C08L51/00C08K13/04C08K7/14C08K5/20B29C47/92B29C48/92
CPCC08L81/02B29C48/92B29C2948/92514B29C2948/92704C08L2201/08C08L2205/03C08L2205/08C08L67/02C08L51/006C08K13/04C08K7/14C08K5/20
Inventor 苏健新苏志军占光平李小波陈军
Owner 深圳市高科塑化有限公司