Nanometer nitrile-butadiene rubber composite for laser sintering rapid forming and preparation method thereof

A nano-nitrile rubber and composite material technology, applied in the direction of additive processing, etc., can solve the problems of limiting the application of resin materials, slow molding speed, low mechanical strength, etc., to achieve improved sintering quality, increased molding speed, excellent toughness and durability The effect of low temperature type

Inactive Publication Date: 2017-03-29
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Laser sintering rapid prototyping technology has the advantages of various powder materials, high product precision and simple post-processing. The most commonly used material is resin powder material, but common resin powder materials generally have low mechanical strength, slow molding speed and product Poor performance and other deficiencies, and certain post-processing is required; thus greatly limiting the application of resin materials in the field of laser sintering

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Prepare raw materials according to the following proportions:

[0036] 100 parts of polycarbonate resin powder,

[0037] 5 parts of nanometer nitrile rubber,

[0038] 2 parts of toughening agent ethylene-methyl acrylate-glycidyl methacrylate copolymer,

[0039] 1 part of compatibilizer styrene-acrylonitrile-maleic anhydride copolymer,

[0040] Heat stabilizer calcium stearate 1 part,

[0041] Antioxidant tris [2.4-di-tert-butylphenyl] phosphite 0.02 parts,

[0042] Antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate 0.03 part,

[0043] Lubricant ethylene-acrylic acid copolymer 0.05 part.

[0044] (2) Disperse the above raw materials in a high-speed mixer for 10 minutes; then pass the dispersed raw materials through an extruder, melt, plasticize, extrude, and draw to obtain resin particles, and then pulverize them to make resin particles. A nano-nitrile rubber composite material for rapid prototyping by laser sintering was obtained.

Embodiment 2

[0046] (1) Prepare raw materials according to the following proportions:

[0047] 100 parts of polycarbonate resin powder,

[0048] 15 parts of nanometer nitrile rubber,

[0049] Toughening agent ethylene-methyl acrylate-glycidyl methacrylate copolymer 4 parts,

[0050] 2 parts of compatibilizer styrene-acrylonitrile-maleic anhydride copolymer,

[0051] Heat stabilizer calcium stearate 2 parts,

[0052] 0.06 parts of antioxidant tris[2.4-di-tert-butylphenyl] phosphite,

[0053] Antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate 0.1 parts,

[0054] Lubricant ethylene-acrylic acid copolymer 0.15 parts.

[0055] (2) Disperse the above raw materials in a high-speed mixer for 15 minutes; pass the dispersed raw materials through an extruder, melt, plasticize, extrude, and draw to obtain resin particles, and then powder them to obtain Nano-NBR composites for laser sintering rapid prototyping.

Embodiment 3

[0057] (1) Prepare raw materials according to the following proportions:

[0058] 100 parts of polycarbonate resin powder,

[0059] 25 parts of nanometer nitrile rubber,

[0060] Toughening agent ethylene-methyl acrylate-glycidyl methacrylate copolymer 6 parts,

[0061] 3 parts of compatibilizer styrene-acrylonitrile-maleic anhydride copolymer,

[0062] 3 parts of heat stabilizer calcium stearate,

[0063] 0.12 parts of antioxidant tris[2.4-di-tert-butylphenyl] phosphite,

[0064] Antioxidant β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate 0.18 parts,

[0065] Lubricant ethylene-acrylic acid copolymer 0.25 parts.

[0066] (2) Disperse the above raw materials in a high-speed mixer for 20 minutes; pass the dispersed raw materials through an extruder, melt, plasticize, extrude, and draw to obtain resin particles, and then powder them to obtain Nano-NBR composites for laser sintering rapid prototyping.

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Abstract

The invention provides a nanometer nitrile-butadiene rubber composite for laser sintering rapid forming and a preparation method thereof. The nanometer nitrile-butadiene rubber composite is prepared from 100 parts of resin powder, 5-45 parts of nanometer nitrile-butadiene rubber, 2-10 parts of toughener, 1-5 parts of compatilizer, 1-5 parts of heat stabilizer, 0.05-0.5 part of antioxidant and 0.05-0.5 part of lubricant. The prepared nanometer nitrile-butadiene rubber composite has the advantages of excellent low-temperature toughness, good heat resistance, good oil resistance and the like; meanwhile, the forming speed of the modified composite is greatly increased, and the material processing efficiency is significantly improved. Besides, the nanometer nitrile-butadiene rubber composite is simple in preparation process and can be directly applied and popularized in the field of laser sintering rapid forming to prepare complex-structure components with the requirements for toughness, temperature and the like.

Description

technical field [0001] The invention belongs to the field of laser sintering rapid prototyping raw material modification, and in particular relates to a nano-acrylonitrile-butadiene rubber composite material used for laser sintering rapid prototyping and a preparation method thereof. Background technique [0002] Laser sintering rapid prototyping technology uses carbon dioxide laser as energy source and powder material as raw material to realize rapid construction of three-dimensional products through laser control and powder distribution. The forming process includes laser heating, material melting, powder sintering and dimension adjustment. It is a precise and controllable rapid prototyping technology. Laser sintering rapid prototyping technology has the advantages of various powder materials, high product precision and simple post-processing. The most commonly used material is resin powder material, but common resin powder materials generally have low mechanical strength,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L55/02C08L23/08C08L33/12C08L35/06C08L25/14C08K5/00C08K5/098C08K5/103C08K5/134C08K5/521B33Y70/00
Inventor 杨桂生李枭姚晨光
Owner HEFEI GENIUS NEW MATERIALS
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