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Polyethylene-based thermoplastic elastomer and preparation method and composite plastic thereof

A thermoplastic elastomer, polyethylene-based technology, applied in the field of polyethylene-based thermoplastic elastomers and their preparation, thermoplastic composite plastics, can solve problems affecting the mechanical properties and flow properties of matrix materials

Active Publication Date: 2012-06-27
NINGBO XIANFENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current plastic products need to rely on the addition of a large amount of flame retardants to achieve the purpose of flame retardancy; when the additives of flame retardants are large, it is bound to seriously affect the mechanical properties and flow properties of the matrix material. The research on thermoplastic elastomers with high performance and good flame retardancy has not been reported yet.

Method used

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  • Polyethylene-based thermoplastic elastomer and preparation method and composite plastic thereof
  • Polyethylene-based thermoplastic elastomer and preparation method and composite plastic thereof
  • Polyethylene-based thermoplastic elastomer and preparation method and composite plastic thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 45kg HDPE, 28kg propylene-ethylene copolymer (ethylene content 20wt%), 15kg EVA (vinyl acetate content 25wt%), 4kg silicone flame retardant, 6kg ammonium polyphosphate, 1kg calcium carbonate and 0.5kg antioxidant, 0.5 kg ultraviolet absorber is put into the mixer together and mixed evenly, then transferred to a high-speed co-rotating parallel twin-screw extruder to extrude strands and cut pellets. The extrusion process conditions are shown in Table 3 below:

[0055] table 3

[0056]

[0057] Through the above-mentioned steps, the polyethylene-based thermoplastic elastomer blank of this embodiment was obtained, and after heat treatment at 80° C., the finished polyethylene-based thermoplastic elastomer was obtained, denoted as S1.

Embodiment 2-5

[0059] Polyethylene-based thermoplastic elastomers S2-S5 were prepared in the same steps as in Example 1. The difference is that the content of each component is shown in Table 4 below: S2 heat treatment temperature is 90 ° C, S2 heat treatment temperature is 100 ° C, S4 heat treatment The temperature is 90°C, the S4 heat treatment temperature is 90°C, and the S5 heat treatment temperature is 90°C.

[0060] Table 4

[0061]

[0062]

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Abstract

The invention provides a polyethylene-based thermoplastic elastomer. Based on total mass, the polyethylene-based thermoplastic elastomer contains the following components: 45 to 70 weight percent of high density polyethylene, 15 to 30 weight percent of propylene-ethylene copolymer, 10 to 20 weight percent of ethylene-vinyl acetate copolymer, 2 to 10 weight percent of silicone flame retardant, and 2 to 10 weight percent of ammonium polyphosphate. The invention also provides a preparation method for the polyethylene-based thermoplastic elastomer and a thermoplastic composite plastic using the polyethylene-based thermoplastic elastomer. The provided polyethylene-based thermoplastic elastomer has ultrahigh flowability and good flame-retardant property.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and relates to a polyethylene-based thermoplastic elastomer, a preparation method thereof, and a thermoplastic composite plastic. Background technique [0002] Thermoplastic elastomer (TPE) is a polymer material between rubber and thermoplastic. It has the duality and broad characteristics of rubber and plastic. It is widely used in automobiles, electrical and electronic, construction, medical and other fields. With the development of new technologies, the continuous optimization and improvement of TPE performance has been promoted, and the application fields have been continuously expanded, especially the strong demand in the automotive and medical fields; in addition, due to the improvement of people's environmental awareness, material recycling has become an important factor in material selection. Discarded PVC has become an important issue of environmental pollution, and calls for rest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/16C08L23/08C08L83/04C08K3/32B29B9/06B29C47/00B29C71/02B29C47/02
Inventor 潘祥江桑维苗卢先锋
Owner NINGBO XIANFENG NEW MATERIAL
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