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Method for preparing polymer blending material

A technology of polymer blending, which is applied in the field of preparing polymer blend materials, can solve problems such as solvent pollution and cumbersome processing steps of compatibilizers, and achieve the effects of low production cost, improved mechanical properties, and convenient equipment maintenance

Active Publication Date: 2014-06-25
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compatibilizers are widely used and are the hotspot of current research. However, the use of compatibilizers inevitably brings about cumbersome processing steps, solvent pollution and other related problems.

Method used

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  • Method for preparing polymer blending material
  • Method for preparing polymer blending material
  • Method for preparing polymer blending material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A kind of raw material of polycarbonate / acrylonitrile-butadiene-styrene copolymer (PC / ABS) blend material comprises following component and mass parts proportioning thereof:

[0056]

[0057] The first step, at first prepare raw materials by above-mentioned components;

[0058] In the second step, at first PC, ABS pellets and compatibilizer are placed in an oven for 12 hours at 80°C;

[0059] The third step is to place the dried PC and ABS pellets obtained in the second step together with a compatibilizer in a high mixer and pre-mix for 6 minutes at a speed of 100 rpm to obtain a PC / ABS premix;

[0060] Then, put the obtained PC / ABS premix into a twin-screw extruder for melt blending, extruding and granulating to obtain PC / ABS premixed composite particles, and place the premixed composite particles in a blast oven at 80° C dry for 3 hours. The temperatures of feed port, conveying section, melting section, homogenizing section and die of twin-screw extruder are 180°...

Embodiment 2

[0067] Preparation of a polycarbonate / polybutylene terephthalate (PC / PBT) blend material.

[0068] Explanation: The literature and experimental results show that the PC / PBT system is a partially compatible system, the two-phase compatibility is very poor, and various performance indicators cannot meet the requirements for use (see [Li Hong, Yu Jie, Luo Zhu, China Plastics, 19 (2005) 10-13]).

[0069] A kind of raw material of PC / PBT blend material comprises following component and mass parts proportioning thereof:

[0070]

[0071] Note: The above components do not contain compatibilizers.

[0072] The first step, at first prepare raw materials by above-mentioned components;

[0073] In the second step, at first PC and PBT pellets were placed in an oven for 12 hours at 80°C;

[0074] In the third step, the dry PC and PBT obtained in the second step are placed together in a high-mixer and pre-mixed for 5 minutes at a speed of 150 rpm to obtain a PC / PBT premix;

[0075] T...

Embodiment 3

[0083] Preparation of a High Density Polyethylene / Nylon-6 (HDPE / PA6) Blend Material

[0084] A kind of raw material of HDPE / PA6 blending material comprises following components and mass parts proportioning thereof:

[0085]

[0086] Note: The above components do not contain compatibilizers.

[0087] The first step, at first prepare raw materials by above-mentioned components;

[0088] In the second step, at first two kinds of polymer pellets were placed in an oven for 12 hours at 80° C.;

[0089] In the third step, the dry HDPE and PA6 obtained in the second step are placed together in a high mixer for 5 minutes and the rotation speed is 150 rpm to obtain a HDPE / PA6 premix;

[0090] Then, put the obtained HDPE / PA6 mixture into a twin-screw extruder for melt blending, extrusion, and granulation to obtain HDPE / PA6 premixed composite particles, and dry the premixed composite particles in a blast oven at 80°C 3 hours. The temperatures of feed port, conveying section, meltin...

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Abstract

The invention discloses a method for preparing a polymer blending material. The method for preparing the polymer blending material is characterized by comprising the following steps: mixing and granulating two polymers according to certain proportion, conveying grain materials by an extruder in a bidirectional stretching, mixing and forming integrated device, plasticizing, fusing, mixing the two polymers uniformly when the fusing body is subjected to bidirectional stretching effect of a mixer, and reducing the size of a phase field to reach the capacity increasing effect, thereby obtaining the blending material with excellent performance. The method for preparing the polymer blending material, which is provided by the invention, solves the problems that the traditional blending means cannot optimize the phase morphology and the technology is complex; moreover, the method is simple to operate, can be used for producing continuously, is convenient to operate and control, is stable in quality, is high production efficiency, and has wide industrialization and market prospects.

Description

technical field [0001] The present invention relates to a method for preparing polymer blend materials, more specifically, it relates to the use of a special mixing device to prepare polymer blends with fine dispersed phase, improved phase morphology and improved compatibility. The material method belongs to the field of preparation technology of polymer-based composite materials. Background technique [0002] Polymer blends play an important role in the research and development of polymer materials due to their technical and economic advantages. However, the performance of polymer blends is often reduced due to poor compatibility and high interfacial energy between the two phases, resulting in low binding force. For most polymer blends, the components are thermodynamically incompatible. The dispersed phase of the incompatible polymer blend has a large size, the interface between the two phases is weak, and the mechanical properties are poor. Use value [Dong Meng, Wang Ru,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/06B29B7/74
Inventor 李姜杨硕郭少云辛敏琦罗明华宋治乾
Owner SICHUAN UNIV
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