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Functionalized TPU special powder for SLS molding anti-impact anti-exposure automobile instrument panel and preparation method of functionalized TPU special powder

An instrument panel and impact-resistant technology, applied in the field of functionalized TPU powder, can solve the problems of very little research and development of TPU powder materials and complex shapes, and achieve the effects of excellent comprehensive product performance, improved precision and high production efficiency.

Pending Publication Date: 2020-12-11
OECHSLER PLASTIC PROD TAICANG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this kind of special material to form automobile instrument panels usually adopts injection molding process, but injection molding process cannot form very complex shapes, especially products with hollow structures
[0015] At present, there are very few researches and developments on TPU powder materials for the SLS molding process and the anti-impact and anti-exposure functionalized TPU powder materials for automotive instrument panels.

Method used

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  • Functionalized TPU special powder for SLS molding anti-impact anti-exposure automobile instrument panel and preparation method of functionalized TPU special powder
  • Functionalized TPU special powder for SLS molding anti-impact anti-exposure automobile instrument panel and preparation method of functionalized TPU special powder
  • Functionalized TPU special powder for SLS molding anti-impact anti-exposure automobile instrument panel and preparation method of functionalized TPU special powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) 100 parts by mass of TPU special powder material, 10 parts by mass of impact-resistant filler, 10 parts by mass of anti-exposure filler, 5 parts by mass of nano-silica, 2 parts by mass of antioxidant, 1 part by mass of stabilizer, talcum powder 10 parts by mass, 2 parts by mass of coupling agent, and 1 part by mass of weather resistance agent were put into a high-speed mixer at 1200 r / min, and blended for 15 minutes.

[0055] (2) SLS forming standard splines, set SLS process parameters, preheating temperature 140°C, scanning distance 0.20mm, laser power 25W, powder coating thickness 0.20mm, scanning speed 9000mm / s.

[0056] (3) Carry out mechanical performance test (impact strength test according to GB / T1043-93, sample tensile test according to GB / T1040-92) and thermal stability test (TGA test) on the formed standard sample.

[0057] In this experimental example, the anti-exposure filler is the anti-exposure modified filler prepared in the above experiment, the anti...

Embodiment 2

[0059] (1) 100 parts by mass of TPU special powder material, 15 parts by mass of anti-shock filler, 15 parts by mass of anti-exposure filler, 5 parts by mass of nano silicon dioxide, 2 parts by mass of antioxidant, 1 part by mass of stabilizer, talcum powder 10 parts by mass, 2 parts by mass of coupling agent, and 1 part by mass of weather resistance agent were put into a high-speed mixer at 1200 r / min, and blended for 15 minutes.

[0060] (2) SLS forming standard splines, set SLS process parameters, preheating temperature 140°C, scanning distance 0.20mm, laser power 25W, powder coating thickness 0.20mm, scanning speed 9000mm / s.

[0061] (3) Carry out mechanical performance test (impact strength test according to GB / T1043-93, sample tensile test according to GB / T1040-92) and thermal stability test (TGA test) on the formed standard sample.

[0062] In this experimental example, the anti-exposure filler is the anti-exposure modified filler prepared in the above experiment, the a...

Embodiment 3

[0064] (1) 100 parts by mass of TPU special powder material, 20 parts by mass of impact-resistant filler, 20 parts by mass of anti-exposure filler, 5 parts by mass of nano-silica, 2 parts by mass of antioxidant, 1 part by mass of stabilizer, talcum powder 10 parts by mass, 2 parts by mass of coupling agent, and 1 part by mass of weather resistance agent were put into a high-speed mixer at 1200 r / min, and blended for 15 minutes.

[0065] (2) SLS forming standard splines, set SLS process parameters, preheating temperature 140°C, scanning distance 0.20mm, laser power 25W, powder coating thickness 0.20mm, scanning speed 9000mm / s.

[0066] (3) Carry out mechanical performance test (impact strength test according to GB / T1043-93, sample tensile test according to GB / T1040-92) and thermal stability test (TGA test) on the formed standard sample.

[0067] In this experimental example, the anti-exposure filler is the anti-exposure modified filler prepared in the above experiment, the anti...

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Abstract

The invention provides a functional TPU special powder for an SLS molding anti-impact anti-exposure automobile instrument panel and a preparation method of the functional TPU special powder. The method comprises the following steps: selecting TPU powder as a base material, wherein the particle size of the TPU powder is preferably 100-150 [mu]m; selecting functional fillers, wherein the functionalfillers comprise an impact-resistant filler, an anti-exposure filler, a flow aid, an antioxidant, a stabilizer, a coupling agent, a weather-resistant agent and the like; putting the base material andthe functional fillers into a high-speed mixer according to a certain ratio, and conducting mechanical mixing; characterizing the mixed TPU composite powder; and analyzing data, and drawing conclusions. The preparation method of the functionalized TPU special powder material for the SLS molding anti-impact anti-exposure automobile instrument panel is simple to operate and high in flexibility, andthe molded automobile instrument panel has good impact resistance, exposure resistance and the like, and has a wide application prospect in the field of automobile industry.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a functionalized TPU special powder used for SLS forming impact-resistant and anti-exposure automotive instrument panels. Background technique [0002] Selective laser sintering (SLS) is an additive manufacturing (3D printing) technology that uses powder as a raw material. The energy provided by the laser is used to melt the powder and then stack it layer by layer to form a printed part. It can produce complex shapes and structures. Functional parts and some parts that are difficult to process have the characteristics of fast forming speed and high precision, and are widely used in aerospace, biomedical, automobile manufacturing and other fields. [0003] SLS raw materials come from a wide range of sources, including metal powders, ceramic-based powders, and polymer material powders. Among them, polymer material powders have relatively low requirements for S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L71/02C08L29/04C08L35/06C08K9/02C08K3/34C08K9/04C08K9/06C08K7/24C08K7/14C08K13/06
CPCC08L75/04C08K2201/011C08K2201/014C08L2205/035C08L2201/08
Inventor 胡焕波吴唯张习云杜湘云黄建昌
Owner OECHSLER PLASTIC PROD TAICANG
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