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Preparing method of high-performance LDPE/PET microfiber strengthened blend

A blend, high-performance technology, applied in the field of reaction processing of polymer materials, can solve the problem of low tensile strength

Active Publication Date: 2017-03-22
CHANGZHOU UNIV HUAIDE COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of preparation method of high-performance LDPE / PET microfiber reinforced blend, overcome the shortcoming of the low density polyethylene material prepared in the prior art that the tensile strength is low, the application scope

Method used

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  • Preparing method of high-performance LDPE/PET microfiber strengthened blend
  • Preparing method of high-performance LDPE/PET microfiber strengthened blend
  • Preparing method of high-performance LDPE/PET microfiber strengthened blend

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] (1) Preparation of LDPE-g-(DAP-co-GMA) graft

[0031] On the extruder that rotating speed is 80rpm, utilize metering pump to inject mixed material (the total mass of GMA and DAP is 10% of LDPE quality, the monomer molar ratio of DAP and GMA is 0.4, and initiator DCP consumption is GMA and 0.5% of the total mass of DAP), and the speed of adding the mixed materials is controlled to prepare LDPE-g-(DAP-co-GMA) high grafting rate grafts. The temperature from the hopper to the die of the extruder is respectively: the first temperature section is 100°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 185 ℃.

[0032] (2) Preparation of special materials for compatibilization

[0033] LDPE, LDPE-g-(DAP-co-GMA) grafts and PET are dried. The dried materials are mixed according to the following mass percentages, and finally extruded and granul...

example 2

[0043] 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

[0045] 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 belongs to the technical field of material processing, and provides a preparing method of a high-performance LDPE-g-(DAP-co-GMA) capacity-increase LDPE / PET microfiber strengthened blend. The method includes the steps that LDPE serves as a continuous phase, PET serves as a dispersion phase, diallyl phthalate and glycidyl methacrylate cograft LDPE graft LDPE-g-(DAP-co-GMA) is adopted as a novel bulking agent, the LDPE / PET capacity-increase blend is prepared, the PET disperse orientation and fiber forming are carried out, the structure is better preserved in a follow-up product, and therefore the aim of strengthening the LDPE through PET microfibers on site is achieved. By means of the method, the LDPE mechanical property can be obviously improved, and the preparing method is of important significance in expanding the application field of the LDPE.

Description

technical field [0001] The invention belongs to the field of reactive processing of polymer materials, and relates to a new method for preparing a high-performance low-density polyethylene (LDPE) / polyethylene terephthalate (PET) microfiber-reinforced blend. Background technique [0002] The preparation of LDPE / PET microfiber reinforced materials has been the focus of research in recent years. It is expected to greatly improve the mechanical strength of LDPE and broaden the application range of LDPE by making the PET in the LDPE / PET blend exist in the form of microfibers in the LDPE matrix through appropriate treatment methods. [0003] However, because LDPE and PET are incompatible blends, the compatibility of the blend system directly determines the performance of the final blend. Therefore, it is necessary to add a compatibilizer to improve the blending process of LDPE / PET. Compatibility between LDPE and PET. The traditional LDPE / PET system is a polyethylene graft of pol...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L67/02C08L51/06C08K5/134C08F255/02C08F220/32C08F218/18C08F222/06B29B9/06B29C47/92B29C45/78B29C48/92
CPCB29B9/065B29C45/78B29C48/92B29C2945/76531B29C2948/92704C08F255/02C08L23/06C08L2205/03C08L2205/08C08L2205/16C08L2207/066C08L67/02C08L51/06C08K5/1345C08F220/325
Inventor 徐建平方欲晓董银春沈帆丁永红
Owner CHANGZHOU UNIV HUAIDE COLLEGE
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