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1. WO2022007361 - 3D PRINTING POWDER AND PREPARATION METHOD THEREFOR

Publication Number WO/2022/007361
Publication Date 13.01.2022
International Application No. PCT/CN2020/140811
International Filing Date 29.12.2020
IPC
C08L 77/02 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
77Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
02Polyamides derived from omega-amino carboxylic acids or from lactams thereof
B33Y 70/10 2020.1
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
70Materials specially adapted for additive manufacturing
10Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
CPC
B33Y 70/10
BPERFORMING OPERATIONS; TRANSPORTING
33ADDITIVE MANUFACTURING TECHNOLOGY
YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
70Materials specially adapted for additive manufacturing
10Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
C08K 5/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
5Use of organic ingredients
C08K 5/521
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
5Use of organic ingredients
49Phosphorus-containing compounds
51Phosphorus bound to oxygen
52Phosphorus bound to oxygen only
521Esters of phosphoric acids, e.g. of H3PO4
C08K 5/5313
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
5Use of organic ingredients
49Phosphorus-containing compounds
51Phosphorus bound to oxygen
53bound to oxygen and to carbon only
5313Phosphinic compounds, e.g. R2=P(:O)OR'
C08K 7/24
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
KUse of inorganic or non-macromolecular organic substances as compounding ingredients
7Use of ingredients characterised by shape
22Expanded, porous or hollow particles
24inorganic
C08L 2201/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
2201Properties
02Flame or fire retardant/resistant
Applicants
  • 金发科技股份有限公司 KINGFA SCI. & TECH. CO., LTD. [CN]/[CN]
Inventors
  • 常欢 CHANG, Huan
  • 叶南飚 YE, Nanbiao
  • 李成 LI, Cheng
  • 周沃华 ZHOU, Wohua
  • 刘鑫鑫 LIU, Xinxin
  • 朱秀梅 ZHU, Xiumei
  • 苏榆钧 SU, Yujun
  • 唐磊 TANG, Lei
  • 黄险波 HUANG, Xianbo
Agents
  • 广州致信伟盛知识产权代理有限公司 GUANGZHOU WISON I.P. LAW FIRM
Priority Data
202010641684.906.07.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) 3D PRINTING POWDER AND PREPARATION METHOD THEREFOR
(FR) POUDRE POUR IMPRESSION 3D ET SON PROCÉDÉ DE PRÉPARATION
(ZH) 一种3D打印粉末及其制备方法
Abstract
(EN) A flame-retardant functional modified 3D printing powder, comprising the following components in parts by weight: 100 parts of polyamide, and 1-30 parts of flame retardant; said flame retardant being dispersed in a polyamide resin matrix in the form of particles sized less than 10 micrometers, and the 3D printing powder having uniform particle size distribution, good fluidity and appropriate bulk density. The 3D printing powder is prepared by a solution method: dissolving resins of new polyamide material, waste material and recycled material in a phenol/toluene-based solvent system; obtaining a polyamide clear solution by means of decolorization (a required step to treat the polyamide waste material), filtering and purification; adding the flame retardant into the polyamide clear solution to fully dissolve the flame retardant; finally, by using a spraying method to spray the solution into deionized water, obtaining the modified 3D printing powder having regular particles, uniform particle size and good fluidity.
(FR) La présente invention concerne une poudre pour impression 3D modifiée fonctionnelle ignifuge, comprenant les composants suivants en parties en poids : 100 parties de polyamide et 1 à 30 parties d'agent ignifuge ; ledit agent ignifuge étant dispersé dans une matrice de résine de polyamide sous la forme de particules de taille inférieure à 10 micromètres, et la poudre pour impression 3D ayant une distribution de taille de particule uniforme, une bonne fluidité et une densité apparente appropriée. La poudre pour impression 3D est préparée par un procédé en solution : la dissolution de résines de nouveau matériau polyamide, de déchets et de matériau recyclé dans un système solvant à base de phénol/toluène ; l'obtention d'une solution limpide de polyamide au moyen d'une décoloration (une étape requise pour traiter les déchets de polyamide), la filtration et la purification ; l'ajout de l'agent ignifuge dans la solution limpide de polyamide pour dissoudre complètement l'agent ignifuge ; enfin, en utilisant un procédé de pulvérisation pour pulvériser la solution dans de l'eau désionisée, l'obtention de la poudre pour impression 3D modifiée ayant des particules régulières, une taille de particule uniforme et une bonne fluidité.
(ZH) 一种阻燃功能改性3D打印粉末,按重量份计,包括以下组分:聚酰胺100份;阻燃剂1-30份;所述的阻燃剂的粒径均以小于10微米的形态分散于聚酰胺树脂基体中,同时3D打印粉末粒径分布均匀、流动性好、堆积密度合适。所述3D打印粉末是通过溶液法制备得到,在苯酚/甲苯为主的溶剂体系中将聚酰胺新料、废料、回收料的树脂溶解,经过脱色(处理聚酰胺废料所需步骤)、过滤提纯得到聚酰胺澄清溶液,在聚酰胺澄清溶液中加入阻燃剂,使阻燃剂充分溶解,最后通过将溶液以喷雾法喷入去离子水中,得到颗粒规整、粒径均匀、流动性好的改性3D打印粉末。
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