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A chemically foamed high-density polyethylene/polypropylene composition and its preparation method

A technology of high-density polyethylene and polypropylene composition, applied in the field of foam materials, can solve the problems of rigid low-temperature performance, rigid low-temperature performance, and high wire hardness, achieve low twist breakage rate, improve compatibility, melt high intensity effect

Active Publication Date: 2018-01-19
广州敬信高聚物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that the high-density polyethylene material is soft after foaming, and it is easy to deform under the increasingly miniaturized and lightweight wiring requirements
[0005] Chinese patent (Application No. CN201510372691.2) applied for a polypropylene foam composition and its preparation method and application, but polypropylene as the main substrate will cause the wire hardness to be too high, resulting in stiffness and poor low-temperature performance.
Chinese patent (application number CN201210086754.4) has applied for a kind of microcellular foamed polypropylene material and its preparation method, which should mainly be used in the field of auto parts, packaging and construction for injection molding. Disadvantages of high, stiff and poor low temperature performance

Method used

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  • A chemically foamed high-density polyethylene/polypropylene composition and its preparation method
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  • A chemically foamed high-density polyethylene/polypropylene composition and its preparation method

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Embodiment Construction

[0034] In the following specific embodiments, the high-density polyethylene (HDPE) is selected as the high-density polyethylene of DGDK-3364NT produced by Dow Chemical, and the polypropylene (PP) is selected from the polypropylene of B-PP3010 produced by Taiwan Plastics Corporation. , the compatibilizer is selected from Dow Chemical’s model as INTUNE propylene-ethylene block copolymer, the low-density polyethylene is selected from Dow Chemical’s model as DFDA-1253NT low-density polyethylene, and the chemical blowing agent is selected from Jiangsu Thorpe ADC DN-4 foaming powder produced by Fine Chemical Company, the foaming aid is zinc stearate produced by Faji (Chemical) Zhangjiagang Co., Ltd., the dispersant is Evonik Degussa Sipernat D10, and the lubricant is produced by Mitsui Chemicals The model is 30050B polyethylene wax, and the antioxidant is 1010 antioxidant produced by BASF.

[0035] The preparation method of the chemically foamed high-density polyethylene / polypropyle...

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Abstract

The invention discloses a chemical foaming high-density polyethylene / polypropylene composition. The chemical foaming high-density polyethylene / polypropylene composition is prepared from the following components in percentage by mass: 52%-80% of high-density polyethylene, 15%-30% of polypropylene, 3%-8% of a compatilizer and 2%-10% of modified foaming masterbatch, wherein the compatilizer is a copolymer of propylene and other olefins; the modified foaming masterbatch is prepared from the following components in percentage by mass: 84%-90% of low-density polyethylene, 8%-12% of a chemical foaming agent, 0.1%-0.5% of a foaming aid, 1%-5% of a dispersant, 0.2%-0.8% of a lubricant and 0.1%-0.5% of an antioxidant. Through the chemical foaming high-density polyethylene / polypropylene composition, the hardness and the temperature resistance of the high-density polyethylene can be improved, so that the rejection rate of pair twist of finished cables and the soldering tin retraction length can be reduced.

Description

technical field [0001] The invention relates to the field of foaming materials, in particular to a chemical foaming high-density polyethylene / polypropylene composition and a preparation method thereof. Background technique [0002] Existing high-speed transmission cables such as USB3.0 cables, HDMI cables, and MICRO USB cables all use chemically foamed high-density polyethylene as the foam insulation layer, such as Chinese Patent Publication No. CN02135233, published on December 31, 2003 1, the name of the invention is polyethylene foam insulation composition for communication cables and its preparation method, which discloses a polyethylene foam insulation composition for communication cables and its preparation method. Its disadvantage is that the high-density polyethylene material is soft after foaming, and it is easy to deform under the increasingly miniaturized and lightweight wiring requirements. [0003] With the development of automatic cable welding technology, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/12C08L53/00C08L23/06C08J9/10B29C47/92B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08J9/103C08J2203/04C08J2323/08C08J2423/12C08L23/0815C08L2201/08C08L2203/14C08L2203/202C08L2205/025C08L2205/035C08L2207/062C08L2207/066C08L23/12C08L53/00C08L23/06
Inventor 洪喜军李天林
Owner 广州敬信高聚物科技有限公司
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