A kind of preparation method of antistatic polypropylene foam beads

A technology for foaming beads and polypropylene, applied in the field of polymers, can solve problems such as affecting conductivity, poor dispersibility, affecting carbon nanotubes, etc.
CN104974368BActive Publication Date: 2018-01-23CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2018-01-23

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Abstract

The invention provides a preparation method of antistatic polypropylene foam beads, comprising firstly obtaining polypropylene according to the following method, then using the obtained polypropylene as a matrix resin, adding carbon nanotubes as an antistatic agent, and using a physical foaming agent The polypropylene foamed beads are obtained by foaming; wherein, the preparation method of the polypropylene is: two or more stages of propylene polymerization are carried out in two or more reactors operated in series, and the two-stage reaction The external electron donors used are silane compounds and diether compounds respectively. The invention uses high-melt-strength polypropylene with wide molecular weight distribution as raw material and carbon nanotubes as antistatic agent to realize the stabilization of polypropylene raw material, effectively expand the foaming window, easy to adjust the process, and can prepare excellent performance Antistatic polypropylene foam beads are widely used in fields with high antistatic requirements, including aerospace, precision instruments, and electronic product packaging.
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Description

technical field

[0001] The invention relates to the field of macromolecules, in particular to a method for preparing antistatic polypropylene foam beads. Background technique

[0002] Foamed materials mainly include foamed beads, foamed plates or sheets and other apparent forms; foamed plates or sheets are widely used in the fields of containers, building materials, auto parts and impact energy absorbing materials.

[0003] Polypropylene foam material is a new type of material, which uses polypropylene as the basic component and contains a large number of air bubbles. It has good properties such as light weight, material saving, low thermal conductivity, good heat insulation performance, ability to absorb impact loads, excellent cushioning performance, good sound insulation performance, and high specific strength. However, PP foam materials have poor antistatic properties, which makes them have defects in the application of chemical pipelines and containers. It is easy to g...

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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