TPEE composite material suitable for high-speed extrusion and preparation method thereof

A high-speed extrusion and composite material technology, applied in the field of polymer composite materials, can solve problems such as melt instability, high efficiency, and unsatisfactory production

Active Publication Date: 2021-06-08
NINGBO QINGHU ELASTOMER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the thin-walled high-speed extrusion processing of the core wire jacket, the unmodified domestic TPEE material can only be produced at an extrusion speed of about 200m / min. Once the extrusion speed exceeds 300m / min, the melt will appear abnormal. Stable, causing numbness or melt fracture on the surface of the extruded core wire, which cannot meet the requirements of more efficient production

Method used

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  • TPEE composite material suitable for high-speed extrusion and preparation method thereof
  • TPEE composite material suitable for high-speed extrusion and preparation method thereof
  • TPEE composite material suitable for high-speed extrusion and preparation method thereof

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preparation example Construction

[0054] The present invention is applicable to the preparation method of the TPEE composite material of high-speed extrusion and comprises the steps:

[0055] (1) Put all raw material components into a high-speed mixer and mix uniformly by mass percentage to obtain a compound;

[0056] (2) Put the mixed material into a twin-screw extruder, the temperature of each section of the screw is 190-240°C, the screw speed is 350-420r / min, extrude and granulate, and obtain the PTEE composite material.

Embodiment 1-5

[0058] The mass percentages of the raw material components of the TPEE composite material suitable for high-speed extrusion provided by Examples 1-5 are shown in Table 1, wherein, TPEE elastomer A Sichuan is H7560E of Chenguang Chemical Research Institute; TPEE elastomer B is Jiangyin Hechuang H63DMG from Elastomer New Material Technology Co., Ltd.; PET is SB500 from Sinopec Yizheng Chemical Fiber Co., Ltd.; other additives are conventional materials on the market.

[0059] The TPEE composite material among the embodiment 1-5 is made by following method:

[0060] (1) Put all raw material components into a high-speed mixer and mix uniformly by mass percentage to obtain a compound;

[0061] (2) Put the mixture into a twin-screw extruder, set the temperature of each section of the screw to 238° C., and the screw speed to 400 r / min, extrude and granulate to obtain a PTEE composite material.

[0062] The TPEE composite raw material composition mass percent (%) of table 1 embodimen...

Embodiment 6

[0066] Embodiment 6 provides a TPEE composite material suitable for high-speed extrusion. The difference from Embodiment 1 is that the PPA processing aid is replaced by vinyl silicone oil, and the rest of the raw material composition and process conditions are the same as in Embodiment 1.

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Abstract

The invention belongs to the technical field of polymer composite materials, and particularly relates to a TPEE composite material suitable for high-speed extrusion and a preparation method thereof. The TPEE composite material suitable for high-speed extrusion is prepared from the following raw material components in percentage by mass: 60 to 90 percent of a thermoplastic polyester elastomer A, 6 to 30 percent of a thermoplastic polyester elastomer B, 1 to 10 percent of polyethylene terephthalate, 0.1 to 2 percent of a high-speed extrusion accelerant, 0.1 to 0.5 percent of a copper inhibitor and 0.1 to 0.5 percent of an antioxidant. Through reasonable compatibility of thermoplastic polyester elastomers with different molecular weights, the TPEE substrate material with bimodal molecular weight distribution is formed, the thermoplastic polyester elastomer A with high molecular weight provides good mechanical properties and environmental stress cracking resistance, the thermoplastic polyester elastomer B with low molecular weight provides good processability, a small amount of the PET is added to serve as in-situ fiber forming resin, a good microfiber structure is formed in the high-speed extrusion process, and the stability of melt in high-speed extrusion is improved.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a TPEE composite material suitable for high-speed extrusion and a preparation method thereof. Background technique [0002] With the vigorous development of the consumer electronics industry in recent years, the market for consumer electronics cables is gradually expanding, and the demand for core wire materials is also rising. Thermoplastic polyester elastomer (TPEE) material has good insulation and mechanical properties, and its heat resistance, low temperature bending resistance and bending fatigue resistance are all due to polyolefin resin, so it has a role in consumer electronics core wire coating materials. important application. [0003] TPEE material is a linear block copolymer composed of crystalline polyester hard segment and amorphous polyether or polyester soft segment, which has both the elasticity of rubber and the strength of engine...

Claims

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Application Information

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IPC IPC(8): C08L67/00C08L67/02C08L27/18C08K5/3415C08K5/25
CPCC08L67/00C08L2201/08C08L2205/035C08L2205/025C08L2203/202C08L67/02C08L27/18C08K5/3415C08K5/25
Inventor 史伟才刘汉水陈庆树俞江定
Owner NINGBO QINGHU ELASTOMER SCI & TECH
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