CN106380162A - Preparation applied to three-dimension printing technology forming plaster powder material - Google Patents

Preparation applied to three-dimension printing technology forming plaster powder material Download PDF

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CN106380162A
CN106380162A CN201610807416.3A CN201610807416A CN106380162A CN 106380162 A CN106380162 A CN 106380162A CN 201610807416 A CN201610807416 A CN 201610807416A CN 106380162 A CN106380162 A CN 106380162A
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material
gypsum powder
printing process
dimensional printing
powder
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CN201610807416.3A
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CN106380162B (en
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李慧芝
李冬梅
许崇娟
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济南大学
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE 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
    • B33Y70/00Materials specially adapted for additive manufacturing
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00034Physico-chemical characteristics of the mixtures
    • C04B2111/00181Mixtures specially adapted for three-dimensional printing (3DP), stereo-lithography or prototyping

Abstract

The invention discloses a preparation method applied to a three-dimension printing technology forming plaster powder material. The preparation method is characterized by comprising the steps of firstly preparing plaster powder into granulated plaster powder with the particle size in a range of 30 to 100mu m; then adding the following ingredients into a grinding miller in mass percentage: 80% to 88% of the granulated plaster powder, 2% to 8% of o-cresol novolac epoxy resin, 0.2% to 1.5% of calcium stearate and 0.1% to 1.0% of urea; starting the grinding miller according to the rotation speed of 200 revolutions per minute and grinding for 40min; then adding 6% to 15% of aceton, wherein the percent sum of all the ingredients is 100 percent; then grinding for 20min with the rotation speed of the grinding miller of 200 revolutions per minute; drying to obtain the three-dimension printing technology forming plaster powder material, wherein the particle size of the obtained three-dimension printing technology forming plaster powder material is in a range of 30 to 120mu m. The material can be directly formed on a three-dimension printer, the material is high in sphericity, good in fluidity and high in forming accuracy, and furthermore, the material is simple in preparation technology, easy for condition control, low in production cost and easy for industrial production.

Description

一种用于三维印刷工艺成型石膏粉体材料的制备 A method of preparing gypsum powder material for forming a three-dimensional printing process

技术领域 FIELD

[0001] 本发明涉及一种用于三维印刷(3DP)工艺快速成型粉体材料的制备方法,属于快速成型的材料领域,特别涉及一种用于三维印刷工艺成型石膏粉体材料的制备方法及应用。 [0001] The present invention relates to a three-dimensional printing (3DP) process for rapid prototyping method of preparing a powder material, a material belonging to the field of rapid prototyping, and particularly relates to a method for forming a three-dimensional printing process of preparing gypsum powder material and application.

背景技术 Background technique

[0002] 石膏是单斜晶系矿物,是主要化学成分为硫酸钙(CaSO4)的水合物。 [0002] Gypsum is a mineral monoclinic system, a main chemical composition of calcium sulfate (of CaSO4) hydrate. 通常为白色、无色,无色透明晶体称为透石膏,有时因含杂质而成灰、浅黄、浅褐等色。 Color is generally white, colorless, transparent colorless, transparent crystal called plaster, sometimes due to impurities and ash, light yellow, light brown and the like. 条痕白色。 Streak white. 透明。 Transparent. 玻璃光泽,解理面珍珠光泽,纤维状集合体丝絹光泽。 Glass luster, cleavage plane pearl luster, silky luster fibrous assemblies. 相对密度2.3。 The relative density of 2.3. 石膏粉是五大凝胶材料之一,在国民经济中占有重要的地位,广泛用于建筑、建材、工业模具和艺术模型、化学工业及农业、食品加工和医药美容等众多应用领域,是一种重要的工业原材料。 Gypsum powder is one of the five gel material, occupies an important position in the national economy, is widely used in many applications in construction, building materials, industrial mold and Art model, the chemical industry and agriculture, food processing and pharmaceuticals beauty, is a important industrial raw materials. 对于特殊的工业模具和艺术模型通过3D打印成型具有成型精度高,成本低,速度快等优点。 For special industrial molds and molding arts model having high molding accuracy, low cost, high speed and other advantages of 3D printing.

[0003] 3D打印是通过模型设计和打印设备把材料逐层堆积成型为三维产品的技术,又称作增材制造。 [0003] 3D model of the design printed by the printing apparatus and deposited layer by layer material is formed into three-dimensional products technology, also known as additive manufacturing. 3D打印融合了数字建模、机电控制、信息技术、材料科学与化学等诸多前沿领域,是“第三次工业革命”的核心技术之一。 3D printing combines digital modeling, mechanical and electrical control on many fronts, information technology, materials science and chemistry is one of the "third industrial revolution" core technology. 3D打印技术已在航空航天、生物医药、建筑、工艺品制造等领域逐步拓宽,其方便快捷、提尚材料利用率等优势不断显现,不断推动传统制造业的转型升级。 3D printing technology has gradually broadened in the aerospace, biomedical, construction, handicrafts manufacturing and other fields, which is convenient to mention still continue to show material utilization and other advantages, continue to promote the transformation and upgrading of traditional manufacturing industries.

[0004] 3D打印材料是3D打印的物质基础,决定着3D打印的泛用性,也是当前制约3D打印发展的瓶颈。 [0004] 3D printing 3D printing material is the material basis, determines the pan with 3D printing, 3D printing is also the current constraints of the development bottleneck. 3D打印材料的种类已从最初的高分子材料(ABS、PLA、PC、PVC、光敏树脂)拓展到金属(各种合金,应用于航空航天、医疗等高端领域)、陶瓷(各种无机非金属材料)等。 3D type printed material from the original polymer material (ABS, PLA, PC, PVC, photosensitive resin) to the expanded metal (various alloys in high-end aerospace, medical, etc.), ceramics (various inorganic non-metallic material) and so on. 根据成型原理,3D打印用材被限定为粉体状、丝状、层片状、液体状,它们各自的适应不同的3D打印方式。 According to the principle of molding, 3D printing material is defined as the powder-form, filament, lamellar, liquid, adapted to their respective different 3D printing. 3D打印粉体材料适用三维印刷工艺(3DP)和选择性激光烧结(SLS),目前关于3D打印用粉体材料的制备方法也有相关报道,中国专利201510125390X公开一种3D打印二氧化锆粉体成型材料的制备方法;中国专利2015101260246公开了一种3D打印快速成型锆铝碳陶瓷粉体材料的制备,由于无机非金属材料具有高强度、高硬度、耐高温、低密度、化学稳定性好、耐腐蚀等优异特性,在航空航天、汽车、生物等行业有广泛应用,其在3D打印领域里的需求量会迅猛增加,因此,选择性激光烧结3D打印无机非金属粉体材料实现商品化具有十分重要意义和广阔的市场。 3D printing powder material suitable for three-dimensional printing process (3DP) and selective laser sintering (the SLS), 3D printing methods currently used for the preparation of the powder material are also reports, Chinese patent discloses a 3D printing 201510125390X zirconia powder molding preparation material; 2015101260246 Chinese patent discloses the preparation of a rapid prototyping 3D printing aluminum zirconium ceramic powder carbon material, since the inorganic non-metallic material having high strength, high hardness, high temperature, low density, chemical stability, corrosion corrosion and other outstanding features, in the aerospace, automotive, biotechnology and other industries have wide applications, the demand in the field of 3D printing will rapidly increase, therefore, selective laser sintering 3D printing inorganic non-metallic powder material has a very commercialized significance and broad market.

[0005] 三维印刷(3DP)工艺,就是今天的3D打印,是美国麻省理工学院Emanual Sachs等人研制的。 [0005] three-dimensional printing (3DP) process, which is today's 3D printing, is the Massachusetts Institute of Technology Emanual Sachs and others developed. E.Μ.Sachs于1989年申请了3DP (Three-Dimens1nal Printing)专利,该专利是非成形材料微滴喷射成形范畴的核心专利之一。 E.Μ.Sachs applied 3DP (Three-Dimens1nal Printing) Patent 1989, which patent is non-shaped core material microstructure one droplet ejection Patent shaped areas. 3DP工艺与SLS工艺类似,采用粉末材料成形,如陶瓷粉末,金属粉末。 3DP and SLS processes similar process, using a powder molding material, such as ceramic powder, metal powder. 所不同的是材料粉末不是通过烧结连接起来的,而是通过喷头用粘接剂(如硅胶)将零件的截“印刷”在材料粉末上面。 Except that material powder is not connected by sintering, but by the head with an adhesive (e.g., silica gel) to cut the part of "print" described above in the powder material. 用粘接剂粘接的零件强度较低,还须后处理。 The lower part with an adhesive strength of the adhesive, must workup. 具体工艺过程如下:上一层粘结完毕后,成型缸下降一个距离(等于层厚:0.013〜0.1mm),供粉缸上升一高度,推出若干粉末,并被铺粉辊推到成型缸,铺平并被压实。 Specific process is as follows: After the completion of the adhesion layer, forming a drop from the cylinder (equivalent layer thickness: 0.013~0.1mm), a powder supply cylinder height increase, introduction of a number of powder, and powder spreading roller to push the forming cylinder, paving and compaction. 喷头在计算机控制下,按下一建造截面的成形数据有选择地喷射粘结剂建造层面。 Nozzle under computer control, the construction of a press section of data forming binder is selectively ejected level construction. 铺粉辊铺粉时多余的粉末被集粉装置收集。 Excess powder collector means for collecting powder when the powder-dusting rollers. 如此周而复始地送粉、铺粉和喷射粘结剂,最终完成一个三维粉体的粘结。 Again and again the feed powder, powder spreading jet and a binder, the final completion of a three-dimensional bonding powder. 未被喷射粘结剂的地方为干粉,在成形过程中起支撑作用,且成形结束后, 比较容易去除。 After local injection is not a dry powder binder, play a supportive role in the forming process, and shaped ends, relatively easy to remove. 但这种成型工艺也有一定的局限性,胶粘剂的用量大,不好控制,胶粘剂容易堵塞喷头。 However, this molding process has certain limitations, the amount of the adhesive is large, poor control, the adhesive easily clogged nozzle.

[0006] 本发明通过对石膏粉体材料进行造粒,将高分子的胶粘剂涂层到造粒石膏粉体材料表面,得到的涂层后石膏粉体材料可以直接采用3DP成型。 [0006] The present invention is gypsum powder by granulating the material, the adhesive coating to the polymer surface of the powder material is granulated gypsum, gypsum obtained after the coating powder material can be directly used 3DP molding. 成型过程中不需要喷洒胶粘剂,只需要喷洒少量的溶剂即可。 Molding process does not require spraying adhesive, only a small amount of solvent can be sprayed. 优点是胶粘剂用量大大减少,在后续煅烧过程中减少环境污染,产品的品质高。 The advantage is significantly reduced amount of adhesive, reducing environmental pollution in the subsequent calcination process, high-quality products. 本申请的工艺制备的粉体材料粒径均匀,球形度高,流动性好,适合3DP工艺3D打印成型。 Powder material prepared by the process of the present application a uniform particle size, high sphericity and good fluidity, 3DP process for forming 3D printing. 此外,本专利提供的方法简单,成本低。 Furthermore, the method of this patent provides a simple, low cost. 发明内容 SUMMARY

[0007] 本发明的目是提供一种用于三维印刷工艺成型石膏粉体材料的制备方法,快速成型粉体在喷洒溶剂可直接三维印刷快速成型;本发明的目的通过以下技术方案实现。 [0007] The object of the present invention is to provide a process for forming a three-dimensional printing method of preparing gypsum powder material, the powder in the spray solvent rapid prototyping three-dimensional printing may be directly rapid prototyping; object of the present invention is achieved by the following technical solutions.

[0008] 一种用于三维印刷工艺成型石膏粉体材料的制备方法,其特征在于,该方法具有以下工艺步骤:(1) 造粒石膏粉体制备:在反应器中,按质量百分比加入,水:50%〜60%,脲醛树脂:0.5%〜 2.0%,加热溶解,冷却后,加入石膏粉体:38%〜48%,强力搅拌、反应40〜60min,再加入草酸: 0.1%~1.0%,各组分之和为百分之百,搅拌溶解,然后喷雾干燥,得到造粒石膏粉体,其粒径在30~100ym范围内;(2) 用于三维印刷工艺成型石膏粉体材料的制备:在研磨机中,按质量百分比加入,造粒石膏粉体:80%〜88%,邻甲酚型酚醛环氧树脂:2%〜8%,硬脂酸钙:0.2%〜1.5%,尿素:0.1%〜 1.0%,开启研磨机转速在200转/分钟,研磨40min,丙酮:6%〜15%,各组分之和为百分之百,研磨机转速在200转/分钟,再研磨20min,干燥,得到用于三维印刷工艺成型石膏粉体材料,所得到的用于三维印刷工艺成型石膏粉 [0008] A three-dimensional printing process for preparation of the gypsum powder molding material, wherein the method has the following process steps: (1) preparing gypsum powder granulated: in the reactor, mass percent is added, water: 50% ~ 60%, urea resin: 0.5% to 2.0%, dissolved by heating and, after cooling, addition of gypsum powder: 38% ~48%, with vigorous stirring, the reaction 40~60min, oxalic acid added: 0.1 to 1.0% %, sum of the components of one hundred percent, stirred to dissolve, then spray dried to obtain a granulated powder of gypsum, particle size in the range of 30 ~ 100ym; preparation of (2) for molding three-dimensional printing process gypsum powder materials: in the mill, in percentage by mass was added, granulated gypsum powder: 80% ~88%, o-cresol novolac epoxy resin: 2% ~ 8%, calcium stearate: 0.2% ~ 1.5%, urea: 0.1% to 1.0%, open mill speed of 200 rev / min, the polishing 40min, acetone: 6% ~ 15%, and the sum of the components of one hundred percent, the grinder rotation speed of 200 revolutions / minute, and then triturated 20min, dried, to give a three-dimensional printing process for forming gypsum plaster for three-dimensional printing process molding powder materials, the resulting 材料的粒径为30~120mi的范围内。 Particle size of the material is in the range of 30 ~ 120mi.

[0009] 在步骤⑴中所述的石膏粉体的粒径在0.5〜5.0M1范围内;在步骤(1)中所述的喷雾干燥,进风口温度控制在85°C,出风口温度控制在70°C,进风流量220m3/h。 [0009] In step ⑴ particle size of the gypsum powder is in the range 0.5~5.0M1; in step (1) in the spray drying inlet temperature was controlled at 85 ° C, outlet temperature control 70 ° C, inlet air flow of 220m3 / h.

[0010] 在步骤(2)中所述的邻甲酚型酚醛环氧树脂与尿素的质量比在1:0.1〜0.2之间最优。 [0010] In step (2) the mass of o-cresol novolac epoxy resin and urea ratio of between 1: 0.1 to 0.2 is optimal.

[0011] 本发明所述的颗粒度测试方法是采用激光粒度仪测得的粒度当量直径尺寸。 [0011] particle testing method according to the present invention is the use of equivalent particle diameter measured by laser particle size analyzer.

[0012] 本发明的另一目的是提供用于三维印刷工艺成型石膏粉体材料在3D打印机上成型的应用,特点为:将用于三维印刷工艺成型石膏粉体材料加入到供粉缸中,喷头内装入溶剂丙酮。 [0012] Another object of the present invention to provide a printing process for three-dimensional molding applications gypsum powder material formed on a 3D printer, characterized by: a three-dimensional printing process for forming gypsum powder for the powder material is added to the cylinder, the solvent acetone was charged spray head. 具体工艺过程如下:喷头喷洒丙酮于用于三维印刷工艺成型石膏粉体材料上,材料表面的胶粘剂溶解使其粘结,上一层粘结完毕后,成型缸下降一个距离(等于层厚:0.010〜 0.1mm),供粉缸上升一高度,推出若干粉末,并被铺粉辊推到成型缸,铺平并被压实。 Specific process is as follows: spray nozzle acetone for three-dimensional printing process in the gypsum powder molding material, an adhesive to bond the surface of the dissolved material, a layer of the adhesive after completion of molding from a drop tank (equal layer thickness: 0.010 ~ 0.1mm), the height of a powder supply cylinder rises, the introduction of a number of powder, and powder spreading roller to push the forming cylinder, paving and compaction. 喷头在计算机控制下,按下一建造截面的成形数据有选择地喷射溶剂丙酮建造层面。 Nozzle under computer control, the construction of a press section of the injection molding data is selectively solvent such as acetone level construction. 铺粉辊铺粉时多余的粉末被集粉装置收集。 Excess powder collector means for collecting powder when the powder-dusting rollers. 如此周而复始地送粉、铺粉和喷射丙酮,最终完成一个三维粉体的粘结。 Again and again the feed powder, powder spreading jet and acetone, the final completion of a three-dimensional bonding powder. 未被喷射丙酮的地方为干粉,在成形过程中起支撑作用,且成形结束后,比较容易去除。 Local injection of acetone is not dry, play a supportive role in the forming process, and the rear end of the molding, removal is relatively easy.

[0013] 本发明与现有技术比较,具有如下优点及有益效果: [0013] Comparison of the prior art and the present invention has the following advantages and beneficial effects:

(I)本发明获得的用于三维印刷工艺成型石膏粉体材料,不需要喷洒粘结剂,喷头只喷洒溶剂可直接成型,使胶粘剂用量大大降低,提高产品的品质高。 For three-dimensional printing process (I) of the present invention is obtained by molding the gypsum powder material, no adhesive spray, the nozzle can be molded directly sprayed with the solvent, so that the amount of the adhesive is greatly reduced, improving high-quality products.

[0014] (2)本发明获得的本发明获得的用于三维印刷工艺成型石膏粉体材料,颗粒的粒径均匀,球形度高,流动性好,适合3DP工艺3D打印成型;由这种快速成型粉末材料可以制造薄壁模型或微小零部件,制造出产品具有表面光泽度高,精度高等特点。 [0014] (2) of the present invention for three-dimensional printing process of the present invention is obtained by molding the obtained gypsum powder material of uniform particle size, high sphericity and good fluidity, 3DP process for forming 3D printing; manufactured by this rapid molding powder material can produce thin-model or minor components, manufacturing products with high surface gloss, high precision.

[0015] (3)本发明获得的本发明获得的用于三维印刷工艺成型石膏粉体材料,具有制备工艺简单,条件易于控制,生产成本低,易于工业化生产,又具有低碳环保和节约能源等优势。 [0015] (3) of the present invention for three-dimensional printing process of the present invention is obtained by molding the obtained gypsum powder material, preparation process is simple, easy to control conditions, low production cost, industrial production easy, but also has low carbon and energy savings and other advantages.

具体实施方式 Detailed ways

[0016] 实施例1 [0016] Example 1

(1)造粒石膏粉体制备:在反应器中,分别加入,水:5L,脲醛树脂:80 g,加热溶解,冷却后,加入石膏粉体:4500 g,强力搅拌、反应50min,再加入草酸:8g,搅拌溶解,然后喷雾干燥,得到造粒石膏粉体,其粒径在30~100μηι范围内; (1) Preparation of gypsum powder granulation: In a reactor were added, water: 5L, urea resin: 80 g, dissolved by heating, cooled, added to gypsum powder: 4500 g, with vigorous stirring, the reaction 50min, then add oxalic acid: 8g, stirred to dissolve, then spray dried to obtain granules gypsum powder having a particle size in the range of 30 ~ 100μηι;

(2)用于三维印刷工艺成型石膏粉体材料的制备:在研磨机中,分别加入,造粒石膏粉体:85 g,邻甲酚型酚醛环氧树脂:5 g,硬脂酸钙:1.0 g,尿素:0.5 g,开启研磨机转速在200转/分钟,研磨40min,丙酮:12 mL,研磨机转速在200转/分钟,再研磨20min,干燥,得到用于三维印刷工艺成型石膏粉体材料,所得到的用于三维印刷工艺成型石膏粉体材料的粒径为30~120μηι的范围内。 (2) Preparation of gypsum powder material for forming a three-dimensional printing process: in the mill, were added, granulating gypsum powder: 85 g, o-cresol novolac epoxy resin: 5 g, calcium stearate: 1.0 g, urea: 0.5 g, in turn mill speed of 200 revolutions / minute, polishing 40min, acetone: 12 mL, mill speed of 200 rev / min, then polishing 20min, and dried to obtain a molded gypsum powder for three-dimensional printing process material, the particle size of the resulting three-dimensional printing process for forming gypsum powder material is in the range of 30 ~ 120μηι.

[0017] 实施例2 [0017] Example 2

(1)造粒石膏粉体制备:在反应器中,分别加入,水:5L,脲醛树脂:50 g,加热溶解,冷却后,加入石膏粉体:4000 g,强力搅拌、反应40min,再加入草酸:5g,搅拌溶解,然后喷雾干燥,得到造粒石膏粉体,其粒径在30~100μηι范围内; (1) Preparation of gypsum powder granulation: In a reactor were added, water: 5L, urea resin: 50 g, dissolved by heating, cooled, added to gypsum powder: 4000 g, with vigorous stirring, the reaction 40min, then add oxalic acid: 5g, stirred to dissolve, then spray dried to obtain granules gypsum powder having a particle size in the range of 30 ~ 100μηι;

(2)用于三维印刷工艺成型石膏粉体材料的制备:在研磨机中,分别加入,造粒石膏粉体:800 g,邻甲酚型酚醛环氧树脂:80 g,硬脂酸钙:5 g,尿素:2 g,开启研磨机转速在200转/分钟,研磨40min,丙酮:140 mL,研磨机转速在200转/分钟,再研磨20min,干燥,得到用于三维印刷工艺成型石膏粉体材料,所得到的用于三维印刷工艺成型石膏粉体材料的粒径为30~120μηι的范围内。 (2) Preparation of gypsum powder material shaped three-dimensional printing process: in the mill, were added, granulating gypsum powder: 800 g, o-cresol novolac epoxy resin: 80 g, calcium stearate: 5 g, urea: 2 g, in turn mill speed of 200 revolutions / minute, polishing 40min, acetone: 140 mL, mill speed of 200 rev / min, then polishing 20min, and dried, to obtain a three-dimensional printing process for forming gypsum powder material, the particle size of the resulting three-dimensional printing process for forming gypsum powder material is in the range of 30 ~ 120μηι.

[0018] 实施例3 [0018] Example 3

(1)造粒石膏粉体制备:在反应器中,分别加入,水:10L,脲醛树脂:100 g,加热溶解,冷却后,加入石膏粉体:9000 g,强力搅拌、反应60min,再加入草酸:1g,搅拌溶解,然后喷雾干燥,得到造粒石膏粉体,其粒径在30~100μηι范围内; (1) Preparation of gypsum powder granulation: In a reactor were added, water: 10L, urea resin: 100 g, dissolved by heating, cooled, added to gypsum powder: 9000 g, with vigorous stirring, the reaction 60min, then add oxalic acid: 1g, dissolved with stirring and then spray-dried to obtain granules gypsum powder having a particle size in the range of 30 ~ 100μηι;

(2)用于三维印刷工艺成型石膏粉体材料的制备:在研磨机中,分别加入,造粒石膏粉体:88g,邻甲酚型酚醛环氧树脂:4 g,硬脂酸钙:0.2 g,尿素:0.1 g,开启研磨机转速在200转/分钟,研磨40min,丙酮:10 mL,研磨机转速在200转/分钟,再研磨20min,干燥,得到用于三维印刷工艺成型石膏粉体材料,所得到的用于三维印刷工艺成型石膏粉体材料的粒径为30~120μπι的范围内。 (2) Preparation of gypsum powder material for forming a three-dimensional printing process: in the mill, were added, granulating gypsum powder: 88g, o-cresol novolac epoxy resin: 4 g, calcium stearate: 0.2 g, urea: 0.1 g, in turn mill speed of 200 revolutions / minute, polishing 40min, acetone: 10 mL, mill speed of 200 rev / min, then polishing 20min, and dried, to obtain a three-dimensional printing process for forming gypsum powder material, the particle size of the resulting three-dimensional printing process for forming gypsum powder material is in the range of 30 ~ 120μπι.

[0019] 实施例4 [0019] Example 4

(1)造粒石膏粉体制备:在反应器中,分别加入,水:5L,脲醛树脂:40 g,加热溶解,冷却后,加入石膏粉体:5000 g,强力搅拌、反应50min,再加入草酸:4g,搅拌溶解,然后喷雾干燥,得到造粒石膏粉体,其粒径在30~100μηι范围内; (1) Preparation of gypsum powder granulation: In a reactor were added, water: 5L, urea resin: 40 g, dissolved by heating, cooled, added to gypsum powder: 5000 g, with vigorous stirring, the reaction 50min, then add oxalic acid: 4g, stirred to dissolve, then spray dried to obtain granules gypsum powder having a particle size in the range of 30 ~ 100μηι;

(2)用于三维印刷工艺成型石膏粉体材料的制备:在研磨机中,分别加入,造粒石膏粉体:840 g,邻甲酚型酚醛环氧树脂:20 g,硬脂酸钙:15 g,尿素:10 g,开启研磨机转速在200转/分钟,研磨40min,丙酮:150 mL,研磨机转速在200转/分钟,再研磨20min,干燥,得到用于三维印刷工艺成型石膏粉体材料,所得到的用于三维印刷工艺成型石膏粉体材料的粒径为30~120μηι的范围内。 (2) Preparation of gypsum powder material shaped three-dimensional printing process: in the mill, were added, granulating gypsum powder: 840 g, o-cresol novolac epoxy resin: 20 g, calcium stearate: 15 g, urea: 10 g, in turn mill speed of 200 revolutions / minute, polishing 40min, acetone: 150 mL, mill speed of 200 rev / min, then polishing 20min, and dried to obtain a molded gypsum powder for three-dimensional printing process material, the particle size of the resulting three-dimensional printing process for forming gypsum powder material is in the range of 30 ~ 120μηι.

[0020] 实施例5 [0020] Example 5

(1)造粒石膏粉体制备:在反应器中,分别加入,水:5L,脲醛树脂:80 g,加热溶解,冷却后,加入石膏粉体:4500 g,强力搅拌、反应50min,再加入草酸:8g,搅拌溶解,然后喷雾干燥,得到造粒石膏粉体,其粒径在30~100μηι范围内; (1) Preparation of gypsum powder granulation: In a reactor were added, water: 5L, urea resin: 80 g, dissolved by heating, cooled, added to gypsum powder: 4500 g, with vigorous stirring, the reaction 50min, then add oxalic acid: 8g, stirred to dissolve, then spray dried to obtain granules gypsum powder having a particle size in the range of 30 ~ 100μηι;

(2)用于三维印刷工艺成型石膏粉体材料的制备:在研磨机中,分别加入,造粒石膏粉体:86 g,邻甲酚型酚醛环氧树脂:3g,硬脂酸钙:0.3g,尿素:0.3 g,开启研磨机转速在200转/分钟,研磨40min,丙酮:13 mL,研磨机转速在200转/分钟,再研磨20min,干燥,得到用于三维印刷工艺成型石膏粉体材料,所得到的用于三维印刷工艺成型石膏粉体材料的粒径为30~120μπι的范围内。 (2) Preparation of gypsum powder material shaped three-dimensional printing process: in the mill, were added, granulating gypsum powder: 86 g, o-cresol novolac epoxy resin: 3G, calcium stearate: 0.3 g, urea: 0.3 g, in turn mill speed of 200 revolutions / minute, polishing 40min, acetone: 13 mL, mill speed of 200 rev / min, then polishing 20min, and dried, to obtain a three-dimensional printing process for forming gypsum powder material, the particle size of the resulting three-dimensional printing process for forming gypsum powder material is in the range of 30 ~ 120μπι.

[0021] 实施例6 [0021] Example 6

⑴造粒石膏粉体制备:在反应器中,分别加入,水:10L,脲醛树脂:150 g,加热溶解,冷却后,加入石膏粉体:9500 g,强力搅拌、反应50min,再加入草酸:15g,搅拌溶解,然后喷雾干燥,得到造粒石膏粉体,其粒径在30~100μηι范围内; Gypsum powder granulation ⑴ Preparation: In a reactor were added, water: 10L, urea resin: 150 g, dissolved by heating, cooled, added to gypsum powder: 9500 g, with vigorous stirring, the reaction 50min, then oxalic acid: 15g, stirred to dissolve, then spray dried to obtain granules gypsum powder having a particle size in the range of 30 ~ 100μηι;

(2)用于三维印刷工艺成型石膏粉体材料的制备:在研磨机中,分别加入,造粒石膏粉体:850 g,邻甲酚型酚醛环氧树脂:50 g,硬脂酸钙:10 g,尿素:5 g,开启研磨机转速在200转/分钟,研磨40min,丙酮:120 mL,研磨机转速在200转/分钟,再研磨20min,干燥,得到用于三维印刷工艺成型石膏粉体材料,所得到的用于三维印刷工艺成型石膏粉体材料的粒径为30~120μηι的范围内。 (2) Preparation of gypsum powder material shaped three-dimensional printing process: in the mill, were added, granulating gypsum powder: 850 g, o-cresol novolac epoxy resin: 50 g, calcium stearate: 10 g, urea: 5 g, in turn mill speed of 200 revolutions / minute, polishing 40min, acetone: 120 mL, mill speed of 200 rev / min, then polishing 20min, and dried, to obtain a three-dimensional printing process for forming gypsum powder material, the particle size of the resulting three-dimensional printing process for forming gypsum powder material is in the range of 30 ~ 120μηι.

[0022] 使用方法:将用于三维印刷工艺成型石膏粉体材料加入到三维印刷成型3D打印机的供粉缸中,喷头中加入丙酮。 [0022] Use: The printing process for three-dimensional molding material is added to the gypsum powder for powder molding three-dimensional printing cylinder 3D printer, the head of acetone was added. 具体工艺过程如下:从喷头喷射溶剂丙酮,将粉体材料表面的胶粘剂溶解,使粉体粘结在一起,上一层粘结完毕后,成型缸下降一个距离(等于层厚:0.010〜0.1mm),供粉缸上升一高度,推出若干粉末,并被铺粉辊推到成型缸,铺平并被压实。 Specific process is as follows: from ejecting the solvent such as acetone, to dissolve the adhesive surface of the material powder, the powder bonded together, the bonding layer after completion of molding from a drop tank (equal layer thickness: 0.010~0.1mm ), a powder supply cylinder height increase, introduction of a number of powder, and powder spreading roller to push the forming cylinder, paving and compaction. 喷头在计算机控制下,按下一建造截面的成形数据有选择地喷射溶剂丙酮建造层面。 Nozzle under computer control, the construction of a press section of the injection molding data is selectively solvent such as acetone level construction. 铺粉辊铺粉时多余的粉末被集粉装置收集。 Excess powder collector means for collecting powder when the powder-dusting rollers. 如此周而复始地送粉、铺粉和喷射丙酮,最终完成一个三维粉体的粘结。 Again and again the feed powder, powder spreading jet and acetone, the final completion of a three-dimensional bonding powder. 未被喷射丙酮的地方为干粉,在成形过程中起支撑作用,且成形结束后,比较容易去除。 Local injection of acetone is not dry, play a supportive role in the forming process, and the rear end of the molding, removal is relatively easy.

Claims (5)

1.一种用于三维印刷工艺成型石膏粉体材料的制备方法,其特征在于,该方法具有以下工艺步骤:(1) 造粒石膏粉体制备:在反应器中,按质量百分比加入,水:50%〜60%,脲醛树脂:0.5%〜 2.0%,加热溶解,冷却后,加入石膏粉体:38%〜48%,强力搅拌、反应40〜60min,再加入草酸: 0.1%~1.0%,各组分之和为百分之百,搅拌溶解,然后喷雾干燥,得到造粒石膏粉体,其粒径在30~100ym范围内;(2) 用于三维印刷工艺成型石膏粉体材料的制备:在研磨机中,按质量百分比加入,造粒石膏粉体:80%〜88%,邻甲酚型酚醛环氧树脂:2%〜8%,硬脂酸钙:0.2%〜1.5%,尿素:0.1%〜 1.0%,开启研磨机转速在200转/分钟,研磨40min,丙酮:6%〜15%,各组分之和为百分之百,研磨机转速在200转/分钟,再研磨20min,干燥,得到用于三维印刷工艺成型石膏粉体材料,所得到的用于三维印刷工艺成型石膏粉体材 1. A process for producing gypsum powder material for forming a three-dimensional printing process, characterized in that, the method has the following process steps: (1) preparing gypsum powder granulation: in the reactor, in percentage by mass was added, water : 50% ~ 60%, urea resin: 0.5% to 2.0%, dissolved by heating and, after cooling, addition of gypsum powder: 38% ~48%, with vigorous stirring, the reaction 40~60min, oxalic acid added: 0.1% to 1.0% , each of the components is one hundred percent, stirred to dissolve, then spray dried to obtain a granulated powder of gypsum, particle size in the range of 30 ~ 100ym; preparing gypsum powder material (2) for forming a three-dimensional printing process: in mill, in percentage by mass was added, granulated gypsum powder: 80% ~88%, o-cresol novolac epoxy resin: 2% ~ 8%, calcium stearate: 0.2% ~ 1.5%, urea: 0.1 to 1.0%, open mill speed of 200 rev / min, the polishing 40min, acetone: 6% ~ 15%, and the sum of the components of one hundred percent, the grinder rotation speed of 200 revolutions / minute, and then triturated 20min, and dried to give for three-dimensional printing process gypsum powder molding material, the resulting three-dimensional printing process for forming gypsum powder material 料的粒径为30~120mi的范围内。 Particle size material is in the range of 30 ~ 120mi.
2.根据权利要求1所述的一种用于三维印刷工艺成型石膏粉体材料的制备方法,其特征在于,步骤(1)中所述的石膏粉体的粒径在0.5~5.0wn范围内。 According to claim 1, one of the three-dimensional printing process of preparing gypsum powder molding material, wherein the step of particle size within the range of 0.5 ~ 5.0wn (1) in the gypsum powder in .
3.根据权利要求1所述的一种用于三维印刷工艺成型石膏粉体材料的制备方法,其特征在于,步骤(1)中所述的喷雾干燥,进风口温度控制在85°C,出风口温度控制在70°C,进风流量220m3/h。 According to one of the claim 1 for three-dimensional printing process of preparing gypsum powder molding material, wherein, in step (1) in the spray drying inlet temperature was controlled at 85 ° C, the air temperature was controlled at 70 ° C, inlet air flow of 220m3 / h.
4.根据权利要求1所述的一种用于三维印刷工艺成型石膏粉体材料的制备方法,其特征在于,步骤(2)中所述的邻甲酚型酚醛环氧树脂与尿素的质量比在1:0.1〜0.2之间最优。 4. A method of preparing gypsum powder material forming a three-dimensional printing process, characterized in that said according to claim 1, (2) the mass of o-cresol novolac epoxy resin to urea ratio of the step optimal between 0.1 to 0.2: 1.
5.根据权利要求1所述的一种用于三维印刷工艺成型石膏粉体材料的制备方法所制备的用于三维印刷工艺成型石膏粉体材料,其特征在于,所述用于三维印刷工艺成型石膏粉体材料在三维印刷打印机上3D成型条件时,从喷头喷射溶剂丙酮。 According to one of the claim 1 for forming a three-dimensional printing process for three-dimensional printing process of preparing gypsum powder material prepared gypsum powder molding material, wherein the printing process for three-dimensional molding gypsum powder material on a three-dimensional printing 3D printer during the molding condition, the injection nozzle from solvents such as acetone.
CN201610807416.3A 2016-09-07 2016-09-07 A method of preparing gypsum powder material for forming a three-dimensional printing process CN106380162B (en)

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