Preparing method for high-performance LLDPE/PET micro fiber enhanced 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 LLDPE / PET microfiber-reinforced blend, overcome the low tensile strength of linear low-density polyethylene material prepared in the prior art, the shortcoming of application scope

Method used

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  • Preparing method for high-performance LLDPE/PET micro fiber enhanced blend
  • Preparing method for high-performance LLDPE/PET micro fiber enhanced blend

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0031] (1) Preparation of LLDPE-g-(DAP-co-GMA) graft

[0032] On the extruder that rotating speed is 120rpm, utilize metering pump to inject mixed material (the total mass of GMA and DAP is 10% of LLDPE 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 LLDPE-g-(DAP-co-GMA) grafts with high grafting rate. The temperature from the hopper to the die of the extruder is: 100°C, 170°C, 180°C, 185°C, 190°C, 185°C, and the screw speed of the extruder is 60-100 rpm.

[0033] (2) Preparation of special materials for compatibilization

[0034] Dry LLDPE, LLDPE-g-(DAP-co-GMA) grafts and PET. The dried material is mixed with the antioxidant according to the following mass percentage, and finally extruded and granulated in an extruder. The temperature of the extruder from the hopper to the die is: 100°C, 250°C, 280°C, 280°C, 280°C, 260°C, and...

example 2

[0044] 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

[0046] 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 preparing method for a high-performance LLDPE/PET micro fiber enhanced blend. The LLDPE/PET compatibilization blend is prepared with LLDPE as a continuous phase, PET as a dispersion phase and DAP and GMA cograft LLDPE graft LLDPE-g-(DAP-co-GMA) as a novel bulking agent. Through the proper machining method, the PET dispersion phase in the blend is in orientation and fiber forming, more structures are stored in subsequent products, and the purpose of in-situ enhancement of LLDPE through the PET micro fiber is achieved. By means of the method, the mechanical performance of the LLDPE can be obviously improved, and an extremely important significance is achieved for widening the LLDPE application field.

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 linear low-density polyethylene (LLDPE) / polyethylene terephthalate (PET) microfiber-reinforced blend. Background technique [0002] The preparation of LLDPE / PET microfiber reinforced materials has been the focus of research in recent years. It is expected to greatly improve the mechanical strength of LLDPE and broaden the application range of LLDPE by making the PET in the LLDPE / PET blend exist in the form of microfibers in the LLDPE matrix through appropriate treatment methods. [0003] However, because LLDPE 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 LLDPE / PET. Compatibility between LLDPE and PET. The compatibilizer of the traditional LLDPE / PE...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L67/02C08L51/06C08K5/134C08F255/02C08F220/32C08F218/18C08F222/06B29C45/78B29C47/92B29C48/92
CPCB29C45/78B29C2945/76531B29C48/92B29C2948/9259B29C2948/92704C08F255/02C08L23/0815C08L2205/03C08L2205/08C08L2205/16C08L67/02C08L51/06C08K5/1345C08F220/325
Inventor 徐建平董银春沈帆丁永红
Owner CHANGZHOU UNIV HUAIDE COLLEGE
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