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Polycarbonate/poly-butylene terephthalate alloy preparing method

A polybutylene terephthalate and polycarbonate technology, which is applied in the field of engineering plastic alloy preparation, can solve the problems of large difference in polarity, little improvement in notched impact strength, poor compatibility, etc. The effect of convenience, good industrialization prospects and good impact resistance

Inactive Publication Date: 2006-06-14
NINGBO SHUAITELONG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large polarity difference between ethylene-octene copolymer and polycarbonate and polybutylene terephthalate, ethylene-octene copolymer and polycarbonate / polybutylene terephthalate The compatibility of the system is poor. When modifying the polycarbonate / polybutylene terephthalate system, especially the system with high polybutylene terephthalate content, the notch impact Little increase in strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0011] Embodiment 1-3: According to the formula in Table-1, polycarbonate (PC, brand: PC110, Asahi Meihua Co., Ltd.), polybutylene terephthalate (PBT, brand: L2100- G, Yihua Group Corporation Engineering Plastics Factory) dried in a vacuum oven at 120°C for 4 hours, mixed with ethylene-butyl acrylate-glycidyl methacrylate copolymer (PTW, brand: ElvaloyPTW, DuPont), ethylene-octyl Polyethylene copolymer (POE, grade: Engage8180, DuPont-Dow) is added to the twin-screw extruder for mixing, the blending temperature is 230-250 ° C, the screw speed is 250-350 rpm, and the extruded pellets are used After drying in an ordinary oven at 100°C for 4 hours, make a standard sample on an injection molding machine, and the injection molding temperature is: 230-259°C. The samples were tested according to ISO R527, ISO 178, ISO 180 standards for tensile, bending, impact and other performance indicators.

[0012] The test results are shown in Table-1. After adding PTW and POE, the notched impac...

Embodiment 4-8

[0015] Embodiment 4-8: According to the formula in Table-2, polycarbonate (PC, brand: PC110, Xumei Chemical Co., Ltd.), polybutylene terephthalate (PBT, brand: L2100- G, Yihua Group Corporation Engineering Plastics Factory) dried in a vacuum oven at 120°C for 4 hours, mixed with ethylene-butyl acrylate-glycidyl methacrylate copolymer (PTW, brand: ElvaloyPTW, DuPont), ethylene-octyl Polyethylene copolymer (POE, grade: Engage8180, DuPont-Dow) is added to the twin-screw extruder for mixing, the blending temperature is 230-250 ° C, the screw speed is 250-350 rpm, and the extruded pellets are used After drying in an ordinary oven at 100°C for 4 hours, make a standard sample on an injection molding machine, and the injection molding temperature is: 230-259°C. The samples were tested according to ISO R527, ISO 178, ISO 180 standards for tensile, bending, impact and other performance indicators. The test results are shown in Table-2. With the increase of PTW and POE dosage, the notche...

Embodiment 8-12

[0017] Embodiment 8-12: According to the formula in Table-3, polycarbonate (PC, brand: PC110, Xumei Chemical Industry Co., Ltd.), polybutylene terephthalate (PBT, brand: L1075, (Engineering Plastics Factory of Yihua Group Corporation) was dried in a vacuum oven at 120°C for 4 hours, and then copolymerized with ethylene-butyl acrylate-glycidyl methacrylate copolymer (PTW, brand: ElvaloyPTW, DuPont) and ethylene-octene Compounds (POE, brands: Engage8180, Engage8150, Engage8100, Engage8200, Engage8003, DuPont-Dow) are added to the twin-screw extruder for mixing. The blending temperature is 230-250 ° C, and the screw speed is 250-350 rpm. Dry the extruded pellets in an ordinary oven at 100°C for 4 hours and then make a standard sample on the injection molding machine. The injection molding temperature is: 230-259°C. The samples are tested according to ISO R527, ISO 178, and ISO 180 standards. Tensile, bending, impact and other performance indicators, the test results are shown in ...

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Abstract

The present invention provides the preparation method of polycarbonate / polybutylene terephthalate alloy, promptly adopts two kinds of tougheners of ethylene-butyl acrylate-glycidyl methacrylate copolymer and ethylene-octene copolymer The technology used in combination is blended with polycarbonate and polybutylene terephthalate in a twin-screw extruder to obtain a high-performance alloy. This method has the advantages of simple production process and good processing performance. The prepared polycarbonate / polybutylene terephthalate alloy material can be used as materials for machinery, automobile parts and the like.

Description

Technical field: [0001] The invention relates to a preparation method of an engineering plastic alloy, in particular to a preparation method of an alloy of polycarbonate and polybutylene terephthalate. Background technique: [0002] Polycarbonate (PC) is an amorphous thermoplastic polymer with good mechanical properties, heat resistance and electrical properties, especially good impact resistance. It ranks first among engineering plastics and is widely used in electrical appliances, electronics, medical Devices and many other fields are widely used, but PC has high melt viscosity, poor fluidity, and poor solvent resistance, especially poor tolerance to organic solvents and alkaline drugs, and is prone to stress cracking and swelling in solvents and alkaline environments , and is notch sensitive. Polybutylene terephthalate (PBT) is a crystalline thermoplastic with fast crystallization speed and is suitable for high-speed molding. It has the characteristics of chemical resist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L67/03B29C47/40
Inventor 白绘宇张勇王仕峰郜奇张隐西
Owner NINGBO SHUAITELONG GRP CO LTD
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