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A special thermoplastic composite material suitable for 3D printing and its preparation method

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

Active Publication Date: 2021-09-07
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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  • A special thermoplastic composite material suitable for 3D printing and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] ① 55 parts of polyphthalamide (PPA), 25 parts of Surlyn resin (Surlyn), 10 parts of ethylene-glycidyl methacrylate (E-GMA), 5 parts of nano-titanium dioxide, 5 parts of graphene, nucleation 0.5 part of dispersant, 0.8 part of dispersant, and 0.5 part of antioxidant were mixed in a high-speed mixer for 20 minutes at a speed of 300 to 1000 rpm to obtain material 1;

[0028] ②Put material 1 from the main feeding port into the parallel twin-screw extruder for granulation, the granulation temperature is 340°C, the screw speed is 400rpm, the water ring is used to granulate, and the cyclone separation is 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 agent, 0.8 part of dispersant, and 0.5 part of antioxidant were mixed in a high-speed mixer for 20 minutes at a speed of 500 rpm to obtain material 1;

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

Embodiment 3

[0038] The performance test of embodiment 3 materials

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

[0040] The national testing standards adopted are as follows:

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

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

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

[0044] Heat distortion 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 table below:

[0047]

[0048] From the above results, it can be seen that the special thermoplastic composite materials suitable for 3D printing prepared in Examples 1-2 have extremely high strength and impact toughness, and the thermal deformation tempera...

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Abstract

The invention discloses a special thermoplastic composite material suitable for 3D printing and a preparation method thereof. The special thermoplastic composite material suitable for 3D printing is mainly prepared from the following components in parts by weight: polyphthalamide ( PPA) 45-85 parts, Surlyn 5-35 parts, ethylene-glycidyl methacrylate copolymer (E-GMA) 5-20 parts, nano-titanium dioxide 1-20 parts, graphene 1-15 parts 0.2-1.5 parts of nucleating agent, 0.1-1.5 parts of dispersant, 0.5-1 part of antioxidant. The special thermoplastic composite material suitable for 3D printing has simple formula, convenient preparation, fast forming and cooling speed, strong melt viscosity, high temperature resistance and corrosion resistance, and is suitable for forming special high temperature resistant 3D printing products or parts. 3D printing products can It can be directly used in the final product to overcome the weakness of long mold production cycle and high cost, and at the same time facilitate the rapid 3D printing of complex products.

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 is a rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. 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 application. [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 are low in cost, fast in forming speed, and overcome the weakness of long mold production cycle and high cost. They are widely used in naval ships, military weap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08L23/08C08K3/22C08K3/04C08K7/00C08K5/20C08K5/05C08K5/134C08K5/526C08K13/04B33Y70/10
Inventor 张哲郑君陈秀秀
Owner 青岛科凯达橡塑有限公司
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