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PC-PBT (polycarbonate-polybutylene terephthalate) hybrid alloy and preparation method thereof

An alloy and polycarbonate technology, applied in the field of flame retardant materials, can solve the problems of poor toughness and solvent resistance, yellowing of mixed alloy color, etc., and achieve the effect of good toughness, solvent resistance and beautiful appearance.

Inactive Publication Date: 2013-05-29
深圳市比克新材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since PC and PBT are both esters, they are prone to transesterification reactions with each other, resulting in yellowish color of the mixed alloy, poor toughness and solvent resistance.

Method used

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  • PC-PBT (polycarbonate-polybutylene terephthalate) hybrid alloy and preparation method thereof
  • PC-PBT (polycarbonate-polybutylene terephthalate) hybrid alloy and preparation method thereof
  • PC-PBT (polycarbonate-polybutylene terephthalate) hybrid alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Preparation of PC and PBT mixed alloy particles

[0027] The mixed alloy is based on 100 parts by mass, and the preparation method comprises the following steps:

[0028] Step 1, according to the contents of each component specified in Table 1, the following components are added: polycarbonate; polybutylene terephthalate; toughening compatibilizer; antioxidant; Stir in a blender for 4-6 minutes to form a uniform mixture;

[0029] Step 2. Add the mixed material into the twin-screw extruder, control the temperature of each heating zone of the extruder barrel and die head between 230-260°C, and the mixed material at 230-260°C Melting and kneading and extruding under the condition of ℃, cooling under normal temperature and pressure after extrusion to obtain PC and PBT mixed alloy.

[0030] Wherein, after the PC, PBT mixed alloy is melted, kneaded and extruded from the extruder, the PC, PBT mixed alloy particles are obtained by performing stranding, cooling, drying and ...

Embodiment 2

[0034] The method of Example 1 was repeated according to the content of each component specified in Table 1, and the properties of the PC and PBT mixed alloy particles prepared in this example were measured according to the standards described in Table 1. See Table 1 for the measurement results.

Embodiment 3

[0038] The method of Example 1 was repeated according to the content of each component specified in Table 1, and the properties of the PC and PBT mixed alloy particles prepared in this example were measured according to the standards described in Table 1. See Table 1 for the measurement results.

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PUM

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Abstract

The invention discloses a PC-PBT (polycarbonate-polybutylene terephthalate) hybrid alloy and a preparation method thereof. The PC-PBT hybrid alloy comprises the following steps the following components in parts by mass (on basis of 100 parts): 40-80 parts of PC, 18-55 parts of PBT, 1-9 parts of toughening and compatiblizing agent, 0.2-0.6 part of antioxidant and 0.2-0.5 part of processing assistant. The PC-PBT hybrid alloy disclosed by the invention has favorable toughness and solvent resistance on the premise of not adding any ester exchange inhibitor, is milk white, and has beautiful appearance.

Description

technical field [0001] The invention relates to the technical field of flame retardant materials, in particular to a mixed alloy of PC and PBT and a preparation method thereof. Background technique [0002] Polycarbonate (PC, Polycarbonate) has excellent performance, good toughness, rigidity, creep resistance, good light transmittance, and high glass transition temperature. The unnotched impact strength ranks first among engineering plastics; it can be used continuously between 120 and 130 °C; at the same time, it has good electrical insulation and dimensional stability. However, polycarbonate has a high melt viscosity, so its fluidity, solvent resistance, and wear resistance are poor, it is sensitive to notches, and its notched impact strength is low. [0003] Polybutylene terephthalate (PBT, Polybutylene terephthalate) is a crystalline, thermoplastic engineering plastic with excellent solvent resistance, good melt fluidity, and easy processing and molding. [0004] Since...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/02C08L23/08C08L51/00C08K5/134C08K5/524C08K5/103
Inventor 李开鹏魏燕辉
Owner 深圳市比克新材科技有限公司
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