PET material with ultrahigh elongation at break and preparation method thereof

A technology of elongation at break and elongation, which is applied in the field of ultra-high elongation at break PET material and its preparation, can solve the problem of limiting the application range of toughened PET, limited increase in elongation at break, low elongation at break, etc. problems, to achieve the effect of improving hydrolysis resistance and chemical resistance, improving elongation at break, and excellent mechanical properties

Inactive Publication Date: 2020-04-28
上海聚威新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PET has excellent mechanical properties and strong rigidity, but poor toughness and low elongation at break. Generally, the notched impact is 1-2KJ / m 2 , the elongation at break is about 10-100%, so PET toughening is an important direction of PET modification research
Commonly used PET tougheners include thermoplastic polyester elastomer (TPEE), ethylene-acrylate elastomer, etc., which can improve the notched impact strength of PET to a certain extent, improve the toughness of the material, but the elongation at break The rate increase is limited, which undoubtedly limits the application range of toughened PET

Method used

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  • PET material with ultrahigh elongation at break and preparation method thereof

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Embodiment 1

[0021] This embodiment provides a PET material with ultra-high elongation at break, which includes the following components in parts by weight: PET: 90 parts, AX8900: 2.5 parts, TPEE (H28DMG): 7.5 parts, antioxidant 1076: 0.1 parts , Antioxidant 168:0.1 part. Add PET, toughener and antioxidant to the high-speed mixer and mix evenly, then extrude and granulate the product through a twin-screw extruder. The temperature of each section of the extruder is controlled at 270, 280, 280, 280, 290, 295, 300°C, speed 200RPM.

Embodiment 2

[0023] This embodiment provides a PET material with ultra-high elongation at break, which includes the following components in parts by weight: PET: 87 parts, AX8900: 5 parts, TPEE (H55DMG): 7.5 parts, antioxidant 1076: 0.15 parts , Antioxidant: 0.2 parts of DLTDP. First add PET, toughener and antioxidant into the high-speed mixer and mix evenly, then extrude and granulate the product through a twin-screw extruder. The temperature of each section of the extruder is controlled at 275, 280, 280, 280, 290, 290, 295°C, speed 230RPM.

Embodiment 3

[0025] This embodiment provides a PET material with ultra-high elongation at break, which includes the following components in parts by weight: PET: 85 parts, PTW: 5 parts, TPEE (H28DMG): 10 parts, antioxidant 1010: 0.2 parts , 0.25 parts of antioxidant DLTDP. First add PET, toughener and antioxidant into the high-speed mixer and mix evenly, then extrude and granulate the product through a twin-screw extruder. The temperature of each section of the extruder is controlled at 275, 280, 280, 280, 290, 290, 295°C, speed 250RPM.

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Abstract

The invention discloses a PET material with ultrahigh elongation at break and a preparation method thereof, and belongs to the technical field of polymer material modification. The PET material with the ultrahigh elongation at break is prepared from the following components in parts by weight: 75 to 90 parts of PET, 10 to 25 parts of toughening agent and 0.2 to 1 part of an antioxidant. An ethylene-acrylate elastomer grafted with glycidyl methacrylate (GMA) and a thermoplastic polyester elastomer (TPEE) jointly toughen the PET, so that a synergistic effect is generated, the elongation at breakof the PET is greatly improved, and the application field of the PET material is expanded.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a PET material with ultra-high elongation at break and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is a common polymer material, which can be used as fiber or engineering plastic according to different viscosity systems. PET has excellent mechanical properties and strong rigidity, but poor toughness and low elongation at break. Generally, the notched impact is 1-2KJ / m 2 , The elongation at break is about 10-100%, so PET toughening is an important direction of PET modification research. Commonly used PET tougheners include thermoplastic polyester elastomer (TPEE), ethylene-acrylate elastomer, etc., which can improve the notched impact strength of PET to a certain extent, improve the toughness of the material, but the elongation at break The rate increase is limited, which undoubtedly limits the application range of tou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L51/06
CPCC08L67/02C08L2205/025C08L2205/03C08L51/06
Inventor 王晶张天荣杨俊王凯王明义
Owner 上海聚威新材料股份有限公司
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