Flame retardant and low heat conduction foaming polypropylene bead and preparation technology thereof

A foamed polypropylene, low thermal conductivity technology, applied in the field of building materials, can solve the problems of high thermal conductivity, low safety, poor flame retardancy, etc., and achieve the effect of low thermal conductivity and excellent flame retardancy

Inactive Publication Date: 2018-07-06
杭州汉克斯隔音技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its excellent performance, it is used in different applications as packaging materials, structural materi

Method used

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Embodiment Construction

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] A flame-retardant and low-thermal-conductivity expanded polypropylene bead of the present embodiment comprises the following components by weight: 100-105 parts of high-melt strength polypropylene, 1.1-2.8 parts of foaming nucleating agent, flame retardant 0.8-2.2 parts, 0.8-2 parts of antioxidant, 0.5-1.5 parts of lubricant, 1-1.5 parts of dispersant, 2-5 parts of masterbatch.

[0024] The melt index (190°C / 2.16kg) of high melt strength polypropylene is 1.0-10g / min. ...

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Abstract

The invention discloses a flame retardant and low heat conduction foaming polypropylene bead which comprises the following ingredients in parts by weight: 100-105 parts of high melt strength polypropylene, 1.1-2.8 parts of foaming nucleator, 0.8-2.2 parts of fire retardant, 0.8-2 parts of antioxidant, 0.5-1.5 parts of lubricant and 1-1.5 parts of dispersing agent. A preparation technology of the bead comprises the steps of mixed extrusion, pelleting, primary foaming, secondary foaming and screening. According to the flame retardant and low heat conduction foaming polypropylene bead and the preparation technology of the bead, the foaming polypropylene bead is subjected flame retardant modification; and the quantity and sizes of foaming holes of the bead are adjusted, so that the bead has alow coefficient of heat conductivity and excellent flame retardancy.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a flame-retardant and low-thermal-conduction foamed polypropylene bead and a preparation process thereof. Background technique [0002] Polypropylene has been increasingly used in different fields due to its excellent mechanical strength, heat resistance, chemical resistance, machinability, cost balance and recyclability. Expanded polypropylene retains the above-mentioned excellent properties, and has additional excellent properties, such as cushioning performance and thermal insulation performance. Due to its excellent performance, it is used in different applications as packaging materials, structural materials, heat insulation materials, etc., but it has high thermal conductivity, poor flame retardancy, and low safety. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a kind of foamed polypropylene beads with ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L61/06C08L3/02C08K5/03C08K3/32C08K3/30C08K3/26C08K3/36C08K3/22C08K3/34C08K5/3492C08J9/16
CPCC08J9/0028C08J9/0061C08J9/0066C08J9/0071C08J9/0095C08J9/16C08J2201/03C08J2323/12C08J2403/02C08J2461/06
Inventor 韩秀龙
Owner 杭州汉克斯隔音技术工程有限公司
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