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Conductive PBS composite wire for 3D printing and preparation method and application thereof

A composite wire and 3D printing technology, which is applied in the field of 3D printing materials, can solve the problems of slow crystallization rate, poor mechanical properties, and high melt index of PBS, and achieve the effect of simple raw materials, strong processability, and good toughness

Inactive Publication Date: 2017-04-26
SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relative molecular weight of PBS is low, the melt index is high, and the mechanical properties are poor, which leads to certain restrictions on its application; on the other hand, the slow crystallization rate of PBS results in a decrease in its performance

Method used

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  • Conductive PBS composite wire for 3D printing and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Dry the PBS produced by Anqing Hexing Chemical Industry Co., Ltd. in a blast drying oven at 60°C for 24 hours;

[0028] (2) According to the weight percentage formula, weigh a certain amount of dried PBS, hexamethylene diisocyanate with 0.4% by mass of PBS, dibutyltin dilaurate with 0.3% by mass of PBS, and modified titanate with 5% by mass of PBS. calcium carbonate nanoparticles, PBS mass 2% silver powder and PBS mass 3% conductive carbon black, stirred and mixed at 150rpm for 10min.

[0029] (3) Put the raw material mixed in step (2) into the feeding port of the twin-screw extruder, heat it at a high temperature of 130-150°C, extrude it into a wire rod with a rotation speed of 20-25rpm, and pass it through a pelletizer. Secondary granulation, cutting the extruded wire into 5-10mm composite granules;

[0030] (4) placing the composite particles cut in step (3) in a blast drying oven at 50° C. for 48 hours;

[0031] (5) Put the dried composite particles in step (4...

Embodiment 2

[0033] (1) Dry the PBS produced by Japan Showa in a blast drying oven at 50°C for 48 hours;

[0034] (2) according to weight percent formula, take by weighing a certain amount of dry PBS, the toluene diisocyanate of PBS quality 0.8%, the methyl o-formate benzene sulfonyl chloride of PBS quality 2%, the copper powder of PBS quality 5% and PBS quality 3 % carbon fiber, stirring and mixing at 120rpm for 15min.

[0035] (3) Place the raw materials mixed in step (2) into the feeding port of the twin-screw extruder, heat them at a high temperature of 120-140°C, extrude them into wire rods with a rotation speed of 27-35rpm, and pass them through a pelletizer. The extruded wire is cut into 5-10mm composite particles;

[0036] (4) placing the composite particles cut in step (3) in a blast drying oven at 60°C for 48 hours;

[0037] (5) Put the dried composite particles in step (4) into the feeding port of the twin-screw extruder, heat them at a high temperature of 120-140°C, and proce...

Embodiment 3

[0039] (1) Dry the PBS produced by Anqing Hexing Chemical Industry Co., Ltd. in a blast drying oven at 55°C for 32 hours;

[0040] (2) According to the weight percent formula, take a certain amount of dried PBS, hexamethylene diisocyanate of PBS quality 0.4%, calcium carbonate nanoparticles modified by silane coupling agent of PBS quality 20%, PBS quality 2% carbon nanotubes, stirred and mixed at 150rpm for 20min.

[0041] (3) Put the raw material mixed in step (2) into the feeding port of the twin-screw extruder, heat it at a high temperature of 130-150°C, extrude it into a wire rod with a rotation speed of 20-25rpm, and pass it through a pelletizer. Secondary granulation, cutting the extruded wire into 5-10mm composite granules;

[0042] (4) placing the composite particles cut in step (3) in a blast drying oven at 50° C. for 48 hours;

[0043] (5) Put the dried composite particles in step (4) into the feeding port of the twin-screw extruder, heat them at a high temperature...

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Abstract

The invention belongs to the field of 3D printing materials and relates to a conductive PBS composite wire for 3D printing and a preparation method and application thereof. The preparation method comprises blending PBS, a chain extender, a catalyst, a nucleating agent and a conductive filler according to the weight percentages, and carrying out extrusion granulation on the mixed raw materials to obtain the conductive PBS composite wire for 3D printing. The conductive PBS composite wire for 3D printing has good toughness and strong workability, is easy to mold, is environmentally friendly and can be used in the fields of packaging, medical treatment, static resistance and electromagnetic shielding.

Description

technical field [0001] The invention belongs to the field of 3D printing materials, and in particular relates to a conductive PBS composite wire for 3D printing and its preparation method and application. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, is a technology for manufacturing three-dimensional products by adding materials layer by layer through 3D printing equipment based on the designed 3D model. This molding technology has the advantages of high molding precision, the ability to mold arbitrary complex structural devices, and high utilization of raw materials. It has been applied in high-demand fields such as ships, aerospace, and medical treatment. 3D printing technology has subverted the methods and principles of traditional manufacturing industries. 3D printing materials have become the main bottleneck restricting the development of 3D printing, and it is also the key point and difficulty of 3D printing bre...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/06C08K13/04C08K9/04C08K3/26C08K7/06C08K3/08C08K7/24C08K3/04B29C47/92B29B9/06B33Y70/00B29C48/92
CPCC08K13/06B29B9/06B29C48/92B29C2948/9258B29C2948/92704B33Y70/00C08K3/04C08K3/08C08K3/26C08K7/06C08K7/24C08K9/04C08K13/04C08K2003/085C08K2003/265C08K2201/001C08K2201/011C08L2201/04C08L2201/06C08L2205/24C08L67/02
Inventor 郑华德马艺娟张明
Owner SOUTH CHINA INST OF COLLABORATIVE INNOVATION