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Special thermoplastic composite material applicable to 3D printing and preparation method thereof

A composite material and 3D printing technology, applied in the direction of additive processing, can solve the problems of poor adaptability, easy cooling deformation, slow cooling speed, etc., to achieve the effect of fast molding speed, small molding shrinkage rate, and fast cooling speed

Active Publication Date: 2019-05-03
青岛科凯达橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the present invention provides a new special thermoplastic composite material suitable for 3D printing and its preparation method. This material has excellent high temperature resistance and corrosion resistance, fast forming speed, low deformation and fast cooling speed. , to solve the problems of poor adaptability, slow cooling speed and easy cooling deformation of existing 3D printing plastic materials

Method used

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  • Special thermoplastic composite material applicable to 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] ①55 parts of polyphthalamide (PPA), 25 parts of Surlyn resin, 10 parts of ethylene-glycidyl methacrylate (E-GMA), 5 parts of nano-titanium dioxide, 5 parts of graphene, nucleation 0.5 part of the dispersant, 0.8 part of the dispersant, and 0.5 part of the antioxidant were mixed in a high-speed mixer for 20 minutes at a speed of 300-1000 rpm to obtain material 1;

[0028] ②Put the material 1 into the parallel twin-screw extruder from the main feeding port for granulation, the granulation temperature is 340 ° C, the screw speed is 400 rpm, the water ring is used for granulation, and the cyclone is separated and dried to obtain a special thermoplastic compound suitable for 3D printing. Material.

Embodiment 2

[0030] ① 65 parts of polyphthalamide (PPA), 10 parts of surlyn resin (Surlyn), 5 parts of ethylene-glycidyl methacrylate (E-GMA), 10 parts of nano titanium dioxide, 10 parts of graphene, nucleation 0.5 part of the dispersant, 0.8 part of the dispersant, and 0.5 part of the antioxidant were mixed in a high-speed mixer for 20 minutes at a speed of 500 rpm to obtain material 1;

[0031] ②Put the material 1 into the parallel twin-screw extruder from the main feeding port for granulation, the granulation temperature is 340 ° C, the screw speed is 400 rpm, the water ring is used for granulation, and the cyclone is separated and dried to obtain a special thermoplastic compound suitable for 3D printing. Material.

Embodiment 3

[0038] The performance test of the material of Example 3

[0039] The special thermoplastic composite materials prepared in Examples 1-2 and Comparative Examples 1 and 2 are divided into four groups, and each group of materials is subjected to the following performance tests according to the following national standards:

[0040] The national test standards used are as follows:

[0041] Tensile performance test standard: GB1040-79;

[0042] Bending performance test standard: GB1042-79;

[0043] Impact performance test standard: GB1043-79;

[0044] Thermal deformation temperature test standard: GB1634-79;

[0045] Plastic molding shrinkage test standard: ASTM D955.

[0046] The test results of the above materials are shown in the following table:

[0047]

[0048] It can be seen from the above results that the special thermoplastic composite materials suitable for 3D printing prepared in Examples 1 to 2 have extremely high strength and impact toughness, and the thermal de...

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Abstract

The invention discloses a special thermoplastic composite material applicable to 3D printing and a preparation method thereof. The special thermoplastic composite material applicable to 3D printing isprepared from the following main components by weight: 45 to 85 parts of polyphthalamide (PPA), 5 to 35 parts of Surlyn resin (Surlyn), 5 to 20 parts of an ethylene-glycidyl methacrylate copolymer (E-GMA), 1 to 20 parts of nanometer titanium dioxide, 1 to 15 parts of graphene, 0.2 to 1.5 parts of a nucleating agent, 0.1 to 1.5 parts of a dispersant and 0.5 to 1 part of an antioxidant. The specialthermoplastic composite material applicable to 3D printing provided by the invention is simple in formula, convenient in preparation, rapid in molding and cooling speed and strong in melt viscosity,has the characteristics of high-temperature resistance and corrosion resistance, and is applicable to molding of special high-temperature-resistant 3D-printed products or components and parts; and a 3D-printed product can be directly used as a final product, so the disadvantages of long period and high cost for mold manufacturing are overcome, and rapid 3D printing of a complicated product can beeasily realized at the same time.

Description

technical field [0001] The invention relates to the field of functional plastic materials, in particular to a special thermoplastic composite material suitable for 3D printing and a preparation method thereof. Background technique [0002] 3D printing, a rapid prototyping technology, is a technology that builds objects by layer-by-layer printing using bondable materials such as powdered metal or plastic based on digital model files. With the rapid development of 3D printing technology, its practical application fields are gradually increasing. The development of 3D printing materials determines whether 3D printing can have a wider range of applications. [0003] At present, 3D printing plastic materials are an important branch of 3D materials, mainly including ABS, PLA, PA, PEEK, etc. 3D printing plastic materials have low cost, fast forming speed, and overcome the weakness of long mold production cycle and high cost. They are widely used in naval ships, military weapons, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L23/08C08K3/22C08K3/04C08K7/00C08K5/20C08K5/05C08K5/134C08K5/526C08K13/04B33Y70/00
Inventor 张哲郑君陈秀秀
Owner 青岛科凯达橡塑有限公司
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