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Preparation method of PP/PET microfiber reinforced blend

A technology of blends and microfibers, which is applied in the field of reaction processing of polymer materials and can solve problems such as low tensile strength

Inactive Publication Date: 2017-02-01
CHANGZHOU UNIV HUAIDE COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of high-performance PP / PET microfiber-reinforced blends, which overcomes the disadvantages of low tensile strength and application range of polypropylene materials prepared in the prior art

Method used

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  • Preparation method of PP/PET microfiber reinforced blend

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of PP-g-(DAP-co-GMA) graft

[0034] On the extruder whose rotating speed is 120rpm, utilize the metering pump to inject the mixed material in the melting section (the total mass of GMA and DAP is 10% of the PP quality, the monomer molar ratio of DAP and GMA is 0.4, and the amount of initiator DCP is GMA and 0.5% of the total mass of DAP, the amount of free radical scavenger antioxidant 1010 is 0.1% of the PP mass), and the speed of adding the mixed material is controlled to prepare PP-g-(DAP-co-GMA) high grafting rate grafts . The temperature from the hopper to the die of the extruder is: the first temperature section is 165°C, the second temperature section is 170°C, the third temperature section is 180°C, the fourth temperature section is 185°C, and the fifth temperature section is 190°C , Die temperature is 185 ℃; screw speed is 60 ~ 100 rpm;

[0035] (2) Preparation of special materials for compatibilization

[0036] Dry PP, PP-g-(DAP-co-GMA) graf...

example 2

[0046] The monomer molar ratio of DAP and GMA in the example one step (1) becomes 0.2, and others are the same as example one.

example 3

[0048] The monomer molar ratio of DAP and GMA in the example one step (1) becomes 0.8, and others are the same as example one.

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Abstract

The invention provides a preparation method of a PP / PET microfiber reinforced blend. The PP / PET capacity-increase blend is preapred with PP as the continuous phase, PET as the dispersing phase and diallyl phthalate and glycidyl methacrylate cograft PP graft PP-g-(DAP-co-GMA) as the novel compatibilizer; the dispersing, orienting and fiber forming of PET in the blend are achieved through a proper processing method, the structure is much stored in subsequent products, and therefore the aim of reinforcing PP through PET microfiber in situ is achieved. By means of the method, the mechanical performance of PP can be remarkably improved, and the method has great important significance in expanding the application field of PP.

Description

technical field [0001] The invention belongs to the field of reaction processing of polymer materials, and relates to a new method for preparing a high-performance polypropylene (PP) / polyethylene terephthalate (PET) microfiber-reinforced blend. Background technique [0002] The blending modification of PP and PET has always been the focus of people's research. Adding PET to PP is expected to improve the heat resistance, surface hardness, dyeability and mechanical strength of PP, especially the improvement of the mechanical strength of PP. High performance and engineering plastics. However, it has been found that the blending of PP and PET cannot effectively improve the mechanical strength of PP. This is because PP and PET are incompatible polymers, and the poor compatibility of the blending system directly leads to The mechanical properties of the blend are poor; on the other hand, because most of the blends of PP and PET are composed of PP as the matrix phase and PET as th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L67/02C08L51/06C08K5/134C08F255/02C08F220/32C08F222/26B29C45/78B29C45/17B29C47/92B29B9/06B29C48/92
CPCB29B9/06B29C45/17B29C45/78B29C48/92B29C2045/1784B29C2945/76531C08F255/02C08L23/12C08L67/02C08L51/06C08K5/1345C08F220/325
Inventor 徐建平董银春沈帆丁永红
Owner CHANGZHOU UNIV HUAIDE COLLEGE
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