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Polymer material with continuously-alternating layer structure and preparation method for same

A technology of polymer materials and alternating layers, which is applied in the field of polymer materials with continuous alternating layered structure and its preparation, can solve the problems of long time-consuming, complicated process and difficulty in industrialization

Active Publication Date: 2014-01-01
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the multi-layer co-extrusion molding process can obtain a good continuous alternating layered structure, and many researchers have carried out a large number of applied research on the continuous alternating layered structure prepared by multi-layer co-extrusion molding, but this molding method is complicated. It takes a long time, so many research results can only stay in the theoretical research stage, and it is difficult to realize industrialization. Therefore, there is an urgent need for a simple and efficient molding method to prepare products with a good alternating layered structure.

Method used

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  • Polymer material with continuously-alternating layer structure and preparation method for same
  • Polymer material with continuously-alternating layer structure and preparation method for same
  • Polymer material with continuously-alternating layer structure and preparation method for same

Examples

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Comparison scheme
Effect test

Embodiment 1

[0086] Firstly, 70 parts of polypropylene and 30 parts of polyethylene are premixed and then added to a twin-screw extruder, melted, blended, extruded, cooled, and pelletized at a temperature of 200°C to obtain blended pellets; and the obtained blended pellets High-speed thin-wall injection molding of the material, the injection temperature is 200 ℃, the injection speed is 300 mm / s, the material with continuous alternating layer structure can be prepared (see the internal phase morphology of the material) figure 1 Middle 1-1, 1-2).

Embodiment 2

[0088] Firstly, 50 parts of polypropylene and 50 parts of polyethylene are pre-mixed and then added to a twin-screw extruder, melt-blended, extruded, cooled, and pelletized at a temperature of 200°C to obtain blended pellets; and the obtained blended pellets High-speed thin-wall injection molding of the material, the injection temperature is 200 ℃, the injection speed is 300 mm / s, the material with continuous alternating layer structure can be prepared (see the internal phase morphology of the material) figure 1 Middle 2-1, 2-2).

Embodiment 3

[0090] Firstly, 30 parts of polypropylene and 70 parts of polyethylene are premixed and then added to the twin-screw extruder, melted, blended, extruded, cooled, and pelletized at a temperature of 200°C to obtain blended pellets; and the obtained blended pellets High-speed thin-wall injection molding of the material, the injection temperature is 200 ℃, the injection speed is 300 mm / s, the material with the continuous alternating layer structure can be prepared (see the internal phase morphology of the material) figure 1 Middle 3-1, 3-2).

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Abstract

The invention discloses a preparation method for a polymer material with a continuously-alternating layer structure. The preparation method comprises the following steps of step 1, premixing 30-70 parts of first resin or a first resin compound and 70-30 parts of second resin or a second resin compound, adding the premix in a double-screw extruder, performing melt blending and extrusion at a temperature of 100-300 DEG C, cooling, and slicing to obtain blend grains; and step 2, performing high-speed thin-wall injection forming on the obtained blend grains at an injection temperature of 100-300 DEG C and an injection speed of 50-1200 mm / s, so as to obtain the polymer material with a continuously-alternating layer structure. The preparation method disclosed by the invention is simple in the whole operation process, low in production cost, suitable for large-scale industrialized production, capable of regulating and controlling the thickness of the continuously-alternating layer structure by adjusting the component proportioning ratio of the blend, and suitable for various blend systems.

Description

Technical field [0001] The present invention belongs to the technical field of the preparation of materials with continuous alternating layered structure and its multifunctionalization, and specifically relates to a method for preparing products of different materials with continuous alternating layered structure through high-speed thin-wall injection molding technology. The present invention also relates to said The polymer material with continuous alternating layer structure prepared by the method. Background technique [0002] Polymer materials have developed rapidly in recent decades, and their application scope has gradually expanded to basically cover all aspects of people's lives. With the improvement of people's living standards, higher requirements are put forward for the performance of polymer materials, such as high reinforcement and functionalization of materials. As an important material modification method, polymer blending can not only make up for the shortcomings...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/06B29C45/16C08L23/12C08L23/06C08L67/04C08L23/08C08L67/02C08L53/02C08L23/22C08L23/16C08L33/12C08L77/02C08L81/02C08K7/00C08K3/04C08J3/22C08K9/04C08K3/34C08K7/14C08K3/22C08K7/24
Inventor 邓华傅强余飞龙张琴陈枫王柯
Owner SICHUAN UNIV
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