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High-performance thermoplastic polyester composite material and preparation method thereof

A thermoplastic polyester and composite material technology, which is applied in the field of composite materials, can solve the problems of glass fiber addition shearing and abrasion, and poor interface bonding between thermoplastic polyester resin and glass fiber, and achieves the effect of heat resistance and environmental protection.

Active Publication Date: 2015-01-14
LIAONING LIAOJIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems that the amount of glass fiber added in the above-mentioned prior art has certain limitations, it is difficult to avoid the shearing and abrasion of glass fiber during processing, and the problems of poor interface bonding between thermoplastic polyester resin and glass fiber Provide a high-performance thermoplastic polyester composite material and its preparation method

Method used

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  • High-performance thermoplastic polyester composite material and preparation method thereof
  • High-performance thermoplastic polyester composite material and preparation method thereof
  • High-performance thermoplastic polyester composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Weigh each component according to the content given in Table 1;

[0025] (2) Dry the PBT resin at 120-140°C for more than 4 hours until the moisture content is ≤0.02%;

[0026] (3) Mix the dried PBT with compatibilizer MAH-g-PP, antioxidant 1010 and antioxidant 168 in a high-speed mixer according to the ratio of Example 1, and send it into a single-screw extruder In the process, melt and extrude in the temperature range of 210°C-268°C, and evenly coat the film at the rotatable double extrusion die to obtain a uniform thermoplastic polyester film;

[0027] (4) Roll the obtained uniform thermoplastic polyester film on both sides of the continuously dispersed glass fiber after infrared heating to prepare a high-performance PBT prepreg tape, and then heat-press it into a composite sheet. The pressing process of the sheet: 235°C, 1MPa, hot pressing for 30 minutes, cold pressing for 30 minutes to obtain thermoplastic polyester composite materials.

Embodiment 2

[0029] (1) Weigh each component according to the content given in Table 1;

[0030] (2) Dry the PBT resin at 120-140°C for more than 4 hours until the moisture content is ≤0.02%;

[0031] (3) Mix the dried PBT with compatibilizer TGIC, antioxidant 1010 and antioxidant 168 in a high-speed mixer according to the ratio of Example 2, and then send them into a single-screw extruder. Melt extrusion within the temperature range of ℃-268℃, and evenly coat the film at the rotatable double extrusion die to obtain a uniform thermoplastic polyester film;

[0032] (4) Roll the obtained uniform thermoplastic polyester film on both sides of the continuously dispersed glass fiber after infrared heating to prepare a high-performance PBT prepreg tape, and then heat-press it into a composite sheet. The pressing process of the sheet: 235°C, 1MPa, hot pressing for 30 minutes, cold pressing for 30 minutes to obtain thermoplastic polyester composite materials.

Embodiment 3

[0034] (1) Weigh each component according to the content given in Table 1;

[0035] (2) Dry the PBT resin at 120-140°C for more than 4 hours until the moisture content is ≤0.02%;

[0036] (3) Mix the dried PBT with the compatibilizer TGIC, antioxidant 1010 and antioxidant 168 in a high-speed mixer according to the ratio of Example 3, and then send them into a single-screw extruder. Melt extrusion within the temperature range of ℃-268℃, and evenly coat the film at the rotatable double extrusion die to obtain a uniform thermoplastic polyester film;

[0037] (4) Roll the obtained uniform thermoplastic polyester film on both sides of the continuously dispersed glass fiber after infrared heating to prepare a high-performance PBT prepreg tape, and then heat-press it into a composite sheet. The pressing process of the sheet: 235°C, 1MPa, hot pressing for 30 minutes, cold pressing for 30 minutes to obtain thermoplastic polyester composite materials.

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Abstract

The invention belongs to the technical field of composite materials and relates to a thermoplastic polyester composite material and a preparation method thereof. The composite material consists of the following components in parts by mass: 50-60 parts of continuous glass fiber, 100 parts of thermoplastic polyester resin, 0.5-1.5 parts of a compatilizer and 0.7-0.9 part of an antioxidant. The composite material disclosed by the invention has the advantages that the composite board is light in weight, has high heat resistance and high mechanical property, particularly, has obvious bending performance, is environmental friendly and has recyclability.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a thermoplastic polyester composite material and a preparation method thereof. Background technique [0002] Thermoplastic polyester resins are saturated polyesters with thermoplastic properties. More refers to the polyester terephthalate. Among polyethylene terephthalates, polyethylene terephthalate and polybutylene terephthalate have the largest output and wide application, and others are mostly used as high-performance films and fibers. Polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) have good rigidity, heat resistance, fatigue resistance, friction resistance, and chemical resistance. The tensile strength exceeds 50MPa. These advantages make PET and PBT a hot spot in the field of engineering materials. In order to further improve the mechanical properties and high temperature resistance of PET and PBT to meet higher requirements and wider ran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K13/04C08K7/14B29C47/00B29C70/50B29C70/54
Inventor 杨桂生韩雪
Owner LIAONING LIAOJIE SCI & TECH
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