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High-performance PBAT plant fiber composite wire material applied to 3D printing and preparation method thereof

A plant fiber and 3D printing technology, applied in the field of 3D printing, can solve problems such as heat shrinkage of products

Inactive Publication Date: 2018-10-19
GUIZHOU MATERIAL IND TECH INSTITUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it can be used in catering utensils, daily necessities, food and drug packaging materials, etc., but the pure PBAT wire is directly used in 3D printing, and the product has serious problems of heat shrinkage. At the same time, the tensile strength and modulus of the product need to be further improved. improve

Method used

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  • High-performance PBAT plant fiber composite wire material applied to 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1 of the present invention: a high-performance PBAT plant fiber composite wire for 3D printing, calculated in parts by mass, including 69.5 parts of PBAT raw material, 15 parts of wood powder (with a particle size of about 300 mesh), and 5 parts of nano-talc powder , 10 parts of polylactic acid, 0.5 parts of chain extender.

[0015] The preparation process is as follows:

[0016] Surface treatment method of plant fiber: Pour 400g wood flour into 1000ml deionized water, add 8g silane coupling agent KH550 into the deionized water, treat it under centrifugal speed of 1000 r / min for 20-40min, then suction filter and dry , to prepare the wood powder that the surface of the coupling agent has been treated for subsequent use.

[0017] Preparation of high-performance PBAT plant fiber composite wires for 3D printing: dry PBAT, wood powder treated with coupling agent, nano-talc powder, and polylactic acid in a vacuum oven at 80°C for 7-8 hours; The components are placed...

Embodiment 2

[0018] Example 2 of the present invention: a high-performance PBAT plant fiber composite wire for 3D printing, calculated in parts by mass, including 59.3 parts of PBAT raw materials, 15 parts of wood powder (with a particle size of about 300 mesh), and 10 parts of bamboo powder ( The particle size is about 300 mesh), 3 parts of nano-talc powder, 2 parts of nano-glass microspheres, 10 parts of polylactic acid, and 0.7 parts of chain extender.

[0019] The preparation process is as follows:

[0020] The surface treatment method of plant fibers: pour 240g wood powder and 160g bamboo powder into 1000ml deionized water, add 6g silane coupling agent KH550 and 4g silane coupling agent KH560 to the deionized water, stir at a centrifugal speed of 1000 r / min Treat for 20 to 40 minutes, then suction filter and dry to obtain wood powder and bamboo powder with the surface treated by the coupling agent, and set aside.

[0021] Preparation of high-performance PBAT plant fiber composite wir...

Embodiment 3

[0022] Example 3 of the present invention: a high-performance PBAT plant fiber composite wire for 3D printing, calculated in parts by mass, including 72.4 parts of PBAT raw materials, 10 parts of wood flour (with a particle size of about 500 mesh), 5 parts of straw (grain diameter of about 500 mesh), 5 parts of nano-talc powder, 2 parts of nano-calcium carbonate, 5 parts of polylactic acid, and 0.6 parts of chain extender.

[0023] The preparation process is as follows:

[0024] Surface treatment method of plant fibers: Pour 240g wood flour and 160g straw into 1000ml deionized water, add 6g silane coupling agent KH550 and 4g silane coupling agent KH560 to the deionized water, and treat under 1000 r / min centrifugal speed stirring 20 to 40 minutes, then suction filtered and dried to obtain the wood powder treated with the coupling agent surface and set aside.

[0025] Preparation of high-performance PBAT plant fiber composite wire for 3D printing: dry PBAT, wood powder and stra...

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Abstract

The invention discloses a high-performance PBAT plant fiber composite wire material applied to 3D printing. The wire material is prepared from the following raw materials in parts by weight: 70 to 90parts of a PBAT raw material, 5 to 25 parts of plant fiber, 1 to 10 parts of nano filler, 1 to 15 parts of polylactic acid and 0.2 to 1 part of a chain extender. According to the wire material disclosed by the invention, a renewable resource of plant fiber is added into a totally degradable biological material of poly adipic acid / butylenes terephthalate (PBAT) to prepare the composite wire material. Compared with a traditional polylactic acid wire material, the wire material has a lower printing temperature, can prevent the warping problem after printing and has better tensile strength and flexibility; furthermore, the printing appearance of a product is smooth, the printing process of the product is smooth, a printing machine spray head is prevented from being plugged, and the composite wire material is suitable for varieties of 3D forming technologies; in addition, a printed product has natural texture of wood, and the composite wire material has a wide application prospect in the field of 3D printing.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a plant fiber composite wire for 3D printing and a preparation method thereof. Background technique [0002] With the development of 3D printing technology, 3D printing products have developed from the original popular science products to functional products. At present, 3D printing technology is mainly used in the fields of product prototype, mold manufacturing and artistic creation. 3D printing has changed the traditional Industrial manufacturing mode is one of the most important technologies in the 21st century. [0003] Polybutylene adipate / terephthalate (PBAT) is a thermoplastic biodegradable plastic. It is a copolymer of butylene adipate and butylene terephthalate. It has the characteristics of both PBA and PBT. It is a semi-crystalline resin with complete biodegradability and good processability. At present, it can be used in catering utensils, daily necessities, foo...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F8/18D01F1/10B33Y70/00C08L67/02C08L67/04C08L97/02C08L1/02C08K3/34C08K7/20C08K3/26
CPCD01F8/14B33Y70/00C08K2003/265C08K2201/011C08L67/02C08L2203/12C08L2205/02C08L2205/025C08L2205/03C08L2205/035C08L2205/16D01F1/10D01F8/18C08L67/04C08L97/02C08K3/34C08K7/20C08K3/26
Inventor 孙静韦良强罗珊珊黄安荣石敏
Owner GUIZHOU MATERIAL IND TECH INSTITUE
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