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High-toughness and high-rigidity PC/PBT (polycarbonate/polybutylene terephthalate) alloy material and method for preparing same

An alloy material and high rigidity technology, which is applied in the field of high rigidity PC/PBT alloy material and its preparation, and high toughness, can solve the problems of unsatisfactory strength requirements, unstable alloy performance, decreased rigidity and thermal stability, etc., to achieve Improve rigidity, improve impact toughness, and evenly disperse the effect

Inactive Publication Date: 2017-01-04
上海聚威新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] PC / PBT is a polymer alloy with excellent comprehensive properties, but the properties of the alloy are unstable due to transesterification reactions and acidolysis degradation reactions that easily occur when PC and PBT are melt blended.
The increase in the amount of elastomer, although the toughness of the material can be significantly improved, but its rigidity and thermal stability have dropped sharply, so that it cannot meet the strength requirements of larger parts

Method used

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  • High-toughness and high-rigidity PC/PBT (polycarbonate/polybutylene terephthalate) alloy material and method for preparing same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Weigh the following raw material components by weight: PC resin: 65 parts; PBT resin: 16 parts; end-capping agent containing active functional groups: 3 parts; antioxidant: 0.5 parts; toughening agent: 3 parts; Agent: 0.5 parts; Talcum powder: 12 parts;

[0033] 2) First, PBT (viscosity 1.0) resin, MBS containing active functional groups (particle size is 200-300nm, wherein the grafted GMA content is 10%) end-capping agent and talcum powder (particle size 1.5 microns) are extruded by twin-screw Extrusion melt blending and extrusion granulation to prepare PBT end-capped reinforced masterbatch; the process settings of the twin-screw extruder are: the temperature of the conveying section is 180-200°C, the temperature of the plasticizing section is 210-230°C, and the temperature of the homogenization section 210-220°C; screw speed 280-550r / min;

[0034] 3) Then premix the PBT end-capped reinforcement masterbatch with other components (5-10 minutes), melt blend, and gran...

Embodiment 2

[0037] 1) Weigh the following raw material components by weight: PC resin: 75 parts; PBT resin: 12 parts; end-capping agent containing active functional groups: 5 parts; antioxidant: 0.5 parts; toughening agent: 2 parts; Agent: 0.5 parts; Talcum powder: 5 parts;

[0038] 2) First, PBT (viscosity 1.0) resin, E-MA-GMA (particle diameter of 200-300nm, wherein the grafted GMA content is 8%) containing active functional groups end-capping agent and diatomaceous earth (particle diameter of 10 microns ) through twin-screw extruder melt blending, extrusion and granulation to prepare PBT end-capped reinforced masterbatch; the process setting of twin-screw extruder is: the temperature of the conveying section is 180-200°C, and the temperature of the plasticizing section is 210-230°C , the homogenization section temperature is 210-220°C; the screw speed is 280-550r / min;

[0039] 3) Then premix the PBT end-capped reinforcement masterbatch with other components (5-10 minutes), melt blend,...

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Abstract

The invention relates to a high-toughness and high-rigidity PC / PBT (polycarbonate / polybutylene terephthalate) alloy material and a method for preparing the same. The alloy material comprises, by weight, 35-85 parts of PC resin, 10-45 parts of PBT resin, 1-5 parts of end-capping agents with active functional groups, 0.1-1 part of antioxidants, 0-5 parts of toughening agents, 0.1-1 part of lubricants and 5-15 parts of mineral powder. The method includes steps of (1), melting, blending, extruding and granulating the PBT resin, the end-capping agents with the active functional groups and the mineral powder by the aid of a double-screw extruder to prepare PBT end-capping strengthening master batch; (2), premixing, melting, blending and granulating the PBT end-capping strengthening master batch and other components to obtain PC / PBT alloy. The high-toughness and high-rigidity PC / PBT alloy material and the method have the advantages that the PC / PBT alloy is high in toughness and rigidity, and the toughness and the rigidity of the material can be balanced.

Description

technical field [0001] The invention belongs to the field of polymer alloys, in particular to a PC / PBT alloy material with high toughness and high rigidity and a preparation method thereof. Background technique [0002] Polycarbonate (PC) has excellent performance, good toughness and rigidity, good creep resistance, good electrical insulation and dimensional stability; but PC has high melt viscosity, poor fluidity, solvent resistance and wear resistance, Low notched impact strength. Polybutylene terephthalate (PBT) is a thermoplastic engineering plastic with a fast crystallization rate, which has excellent solvent resistance and good melt fluidity. The PC and PBT blend alloy has excellent properties, and the obtained alloy has good heat resistance, notch impact resistance, processability and chemical resistance. It is a blend with high industrial application value and can be widely used in automobiles, electronic appliances, etc. and sports equipment. [0003] PC / PBT is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08K3/34B29C47/92B29C48/92
CPCC08L69/00B29C48/92B29C2948/9258B29C2948/92704C08K2201/003C08K2201/014C08L2205/03C08L67/02C08K3/34
Inventor 王晶张天荣牛永杰朱春龙陆佳琦张珂范寅青彭庆益夏新宇
Owner 上海聚威新材料股份有限公司
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