Quickly molded high density polyethylene composition and preparation method thereof

A high-density polyethylene and composition technology, applied in the field of polymer materials, can solve the problems of high price and high production cost, and achieve the effects of short crystallization time, fast forming speed, and easy forming and processing.
CN104558747AActive Publication Date: 2015-04-29CHINA PETROLEUM & CHEM CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2015-04-29

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Abstract

The invention relates to a quickly molded high density polyethylene composition and a preparation method thereof and belongs to the technical field of macromolecular materials. The composition is characterized by being prepared from polyethylene A and polyethylene B with different densities and melt quality flow rates by adding an additive masterbatch to blend and granulate, wherein the composition is prepared from the following components in parts by weight: 75-90 parts of polyethylene A, preferably 80-85 parts, 10-25 parts of polyethylene B, preferably 15-20 parts, and 0.06-0.15 part of the additive masterbatch, and the additive masterbatch is a mixed extrudate of low density polyethylene, nano calcium carbonate and talc powder in a mass ratio of 3: 2: 1. During granulation, three groups of matching kneading blocks with different included angles are used to extrude and granulate at 210-220 DEG C. The composition provided by the invention is high in crystallization temperature and short in crystallization time, the product is fast in molding speed during production and good in dimensional stability, and the components are relatively low in price.
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Description

technical field

[0001] A rapid prototyping high-density polyethylene composition and a preparation method thereof belong to the technical field of polymer materials, and in particular relate to a hollow container and a polyethylene composition of profiled materials. Background technique

[0002] High-density polyethylene (HDPE) is a highly crystalline, non-polar thermoplastic resin, widely used in hollow containers, pipes, films, wires and cables, sheets, profiles and other fields. No matter what field HDPE is used in and what kind of processing technology is used, it is a common goal to obtain products with excellent performance, increase the processing and molding speed of products, and improve production efficiency.

[0003] Increasing the crystallization temperature and crystallization rate of HDPE can increase the molding rate of its products and improve production efficiency. The crystallization modification of HDPE is mainly through the addition of organic or inorgan...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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