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Soft-touch polyolefin composite material as well as preparation method and application thereof

A composite material and polyolefin technology, which is applied in the field of soft-touch polyolefin composite materials and its preparation, can solve the problems of control and polypropylene composite materials that cannot simultaneously achieve flexural modulus and Shore hardness, and achieve good tactility and cost performance The effect of high and low hardness

Active Publication Date: 2021-08-13
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defects and deficiencies that the existing polypropylene composite materials cannot realize the control of flexural modulus and Shore hardness at the same time, and obtain a soft touch polyolefin composite material with good flexibility, and provide a soft touch polyolefin composite material. Olefin composites

Method used

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  • Soft-touch polyolefin composite material as well as preparation method and application thereof
  • Soft-touch polyolefin composite material as well as preparation method and application thereof
  • Soft-touch polyolefin composite material as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0072] A soft-touch polyolefin composite material, comprising the following components: polyethylene; polypropylene; thermoplastic elastomer; filler; compatibilizer;

[0073] The preparation method of the above-mentioned soft-touch polyolefin composite material comprises the following steps:

[0074] S1. Mix polyethylene, polypropylene and compatibilizer in a high mixer for 3 minutes, then add other additives, and mix for 2 minutes at a speed of 500 rpm, and mix evenly to obtain a premix;

[0075] S2. The premix is ​​added through the feed port of the twin-screw extruder, and the filler is added from the side feed port by a side feeder, and then melted and extruded. The temperature of each zone of the screw is 190 ° C ~ 230 ° C, and it is made by vacuum granulation Soft-touch polyolefin composite.

Embodiment 1～16

[0077] A soft-touch polyolefin composite material, comprising the following components: polyethylene; polypropylene; thermoplastic elastomer; filler; compatibilizer;

[0078] The preparation method of the above-mentioned soft-touch polyolefin composite material is the same as that in Example 1.

[0079] The content of each component of the polyolefin composite material of the embodiment of table 1 (by mass fraction / part)

[0080]

[0081]

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Abstract

The invention discloses a soft-touch polyolefin composite material as well as a preparation method and an application thereof, and belongs to the technical field of polymer composite materials. The soft-touch polyolefin composite material comprises the following components in parts by weight: 20 to 60 parts of polyethylene; 10 to 45 parts of polypropylene; 5 to 15 parts of thermoplastic elastomer; 5 to 20 parts of a filling agent; 0.2 to 1 part of a compatilizer; and 0-3 parts of other auxiliary agents. According to the soft-touch polyolefin composite material disclosed by the invention, polyethylene with a specific melt flow rate and polypropylene with a specific melt flow rate and a specific crystallization peak temperature are adopted as base materials, and are combined with the specific thermoplastic elastomer and other components, so that the bending modulus of the obtained composite material is less than 500MPa, the shore hardness A is less than 70, the material belongs to a soft-touch material with good flexibility, can be widely applied to sheets and profiled bars, and provides high-quality raw materials for automobile plastic parts and products in the turnover industry.

Description

technical field [0001] The invention relates to the technical field of polymer composite materials, in particular to a soft-touch polyolefin composite material and its preparation method and application. Background technique [0002] Soft touch is a sensory property of plastic products, which can be described as visually extremely low gloss, overall dull, and a certain degree of softness when touching the surface of the part, and the overall feel is biased toward rubber. In recent years, in order to meet the requirements of environmental protection, health, and recycling in the automotive industry, automotive interior and exterior materials have gradually become polyolefins. Polyolefin materials are also moving from general-purpose materials to functionalization. Today, in the polyolefin material series, there are thin-walled high-rigid, low-density, matte, spray-free metallic colors, and even other color effects. The surface of traditional polyolefin products is very hard,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L23/06C08L53/02C08L23/08C08K3/34C08K3/26
CPCC08L23/14C08K2003/265C08K2201/014C08L2205/035C08L2207/066C08L2207/04C08L23/06C08L53/025C08K3/34C08K3/26C08L23/0815
Inventor 汪海黄险波陈平绪叶南飚杨霄云胡志华
Owner KINGFA SCI & TECH CO LTD
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