CN110054875B - 一种用于3d打印的聚乳酸组合物及其制备方法 - Google Patents

一种用于3d打印的聚乳酸组合物及其制备方法 Download PDF

Info

Publication number
CN110054875B
CN110054875B CN201810051244.0A CN201810051244A CN110054875B CN 110054875 B CN110054875 B CN 110054875B CN 201810051244 A CN201810051244 A CN 201810051244A CN 110054875 B CN110054875 B CN 110054875B
Authority
CN
China
Prior art keywords
pla
parts
printing
polylactic acid
acid composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810051244.0A
Other languages
English (en)
Other versions
CN110054875A (zh
Inventor
宗贵升
蔡振宇
柯志坚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen 7th Technology Co ltd
Original Assignee
Shenzhen 7th Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen 7th Technology Co ltd filed Critical Shenzhen 7th Technology Co ltd
Priority to CN201810051244.0A priority Critical patent/CN110054875B/zh
Publication of CN110054875A publication Critical patent/CN110054875A/zh
Application granted granted Critical
Publication of CN110054875B publication Critical patent/CN110054875B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/42Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4266Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
    • C08G18/4269Lactones
    • C08G18/4277Caprolactone and/or substituted caprolactone
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/42Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4266Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
    • C08G18/428Lactides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/4825Polyethers containing two hydroxy groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/4833Polyethers containing oxyethylene units
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/62Polymers of compounds having carbon-to-carbon double bonds
    • C08G18/6204Polymers of olefins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/62Polymers of compounds having carbon-to-carbon double bonds
    • C08G18/6212Polymers of alkenylalcohols; Acetals thereof; Oxyalkylation products thereof
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/08Copolymers of ethene
    • C08L23/0807Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815Copolymers of ethene with aliphatic 1-olefins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L29/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
    • C08L29/02Homopolymers or copolymers of unsaturated alcohols
    • C08L29/04Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

一种用于3D打印的聚乳酸组合物及其制备方法,涉及3D打印材料技术领域,按重量份数计,本发明的聚乳酸组合物包括如下组分:PLA 40‑50份、亲水性材料40‑50份、聚氨酯材料5‑10份、纳米级活性炭5‑10份;所述聚氨酯材料是由双羟基封端的PLA、双羟基封端的亲水性材料和氰酸酯类化合物聚合而成,或者是由双羟基封端的PLA和双异氰酸酯基封端的亲水性材料聚合而成。本发明的聚乳酸组合物的原料按比例混合后,经造粒,即得3D打印材料产品。本发明制得的3D打印材料不仅实现了能够使用水性染料进行喷涂染色的全彩色打印,而且其具有高的机械强度,打印过程中不会产生刺鼻性气味。

Description

一种用于3D打印的聚乳酸组合物及其制备方法
技术领域
本发明涉及3D打印材料技术领域,具体涉及一种用于3D打印的聚乳酸组合物及其制备方法。
背景技术
目前,PLA 3D打印耗材已经成为最广泛使用的耗材之一,其成型效果好、打印无气味、制件强度高等特点使其为众多从业者喜好。另一方面,PLA与其它FDM打印耗材一样,目前只能进行单色打印,打印效果单调;同时由于PLA是疏水性材料,一般情况下无法对其使用水性染料进行喷染着色。
发明内容
本发明要解决的技术问题是提供一种稳定性好、使用性能好、易于使用水性染料进行喷染着色的PLA 3D打印耗材。
为实现上述目的,本发明的技术方案是:一种用于3D打印的聚乳酸组合物,按重量份数计,其包括如下组分:PLA 40-50份、亲水性材料40-50份、聚氨酯材料5-10份、纳米级活性炭5-10份;
所述聚氨酯材料是由双羟基封端的PLA、双羟基封端的亲水性材料和氰酸酯类化合物聚合而成,或者是由双羟基封端的PLA和双异氰酸酯基封端的亲水性材料聚合而成。
进一步地,所述的亲水性材料为PCL、PEG、PVA、POE中的任一种或多种。
所述双异氰酸酯基封端的亲水性材料是由非双异氰酸酯基封端的亲水性材料与氰酸酯类化合物反应制得。
所述双羟基封端的亲水性材料是由非双羟基封端的亲水性材料与脂肪族类饱和醇反应制得。
所述脂肪族类饱和醇为1,4-丁二醇、乙二醇、1,3-丙二醇中的任一种或多种。
所述双羟基封端的PLA是由PLA与脂肪族类饱和醇进行酯交换反应制得。
所述氰酸酯类化合物为HDI、TDI、MDI、HMDI、TMDI中的任一种或多种。
所述聚氨酯材料的聚合反应中,反应温度为65-110℃,反应时间为40-72h。
本发明还提供一种所述聚乳酸组合物的制备方法:按所述重量份数取PLA、亲水性材料、聚氨酯材料和纳米级活性炭四种原料,经混合、造粒,即得产品。
本发明制得的聚乳酸组合物产品可作为3D打印材料应用。
有益效果:
本发明的聚乳酸组合物作为一种PLA基3D打印材料,不仅实现了能够使用水性染料进行喷涂染色的全彩色打印,而且其具有高的机械强度,打印过程中不会产生刺鼻性气味。
具体实施方式
下面将结合本发明的实施例,对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例仅是本发明的一部分实施例,而不是全部的实施例。基于本发明的实施例,本领域所属技术人员在没有做出创造性劳动前提下所获得的其它实施例,都属于本发明保护的范围。
实施例1
一种用于3D打印的聚乳酸组合物,按重量份数计,其组成为:PLA 45份、PCL 45份、聚氨酯材料5份、纳米级活性炭5份。
所述聚乳酸组合物的制备方法,包括如下步骤:
(1)、双羟基封端的PCL的制备
称取25g PCL于500mL两口烧瓶中,加入250mL的三氯甲烷,加热至75℃,搅拌至充分溶解,加入5倍摩尔数的1,4-丁二醇(或者乙二醇、1,3-丙二醇等酯交换试剂)和2wt%的对甲苯磺酸(也可采用月桂酸、棕榈酸等饱和性脂肪酸作为催化剂)的混合溶液,进行酯交换反应,反应8-28小时;待反应结束后,自然冷却至常温,然后把溶液倒入预先装有1L去离子水的分液漏斗中,减压过滤得到透明液体,再通过旋转蒸馏和减压沉淀,最后获得PCL-diol单体,转化率为80%。
(2)、双羟基封端的PLA的制备
称取25g PLA于500mL两口烧瓶中,加入250mL的三氯甲烷,加热至120℃搅拌至充分溶解,加入5倍摩尔数的1,4-丁二醇(或者乙二醇、1,3-丙二醇等酯交换试剂)和2wt%的对甲苯磺酸(也可采用月桂酸、棕榈酸等饱和性脂肪酸作为催化剂)的混合溶液进行酯交换反应,反应8-28小时;待反应结束后,自然冷却至常温,然后把溶液倒入预先装有1L去离子水的分液漏斗中,减压过滤得到透明液体,再通过旋转蒸馏和减压沉淀,最后获得PLA-diol单体,转化率82%。
(3)、聚氨酯材料的制备(本实施例即PCL-PLA中间体材料的制备)
称取0.001mol PCL-diol单体和0.001mol PLA-diol单体于四口烧瓶中,加入20mL无水1,2-二氯乙烷溶解,在90℃共沸蒸馏除水,得无水溶液,加入适量的辛酸亚锡作为催化剂,搅拌充分后,升温至75℃,反应48h后,冷却至室温,然后用针管将连接剂HDI逐滴注入四口烧瓶中进行反应,HDI添加量为0.7ml;将反应后的溶液缓慢加入其8倍体积的乙醚溶液中沉淀,减压抽滤收集沉淀物,在40℃真空干燥至恒重,再将其溶解于10mL氯仿,减压过滤,将过滤得到的溶液在8倍体积的甲醇/乙醚(v/v=1/9)混合溶液中沉淀,收集沉淀物,即获得PCL-PLA中间体材料,转化率为88%。
本实施例制备PCL-PLA中间体材料(即PLA-ran-PCL)的反应式如下:
Figure BDA0001551863720000041
(4)、原料混合、造粒
按重量份,取45份PLA、45份PCL颗粒、5份PCL-PLA中间体材料和5份纳米级活性炭,在混合机中混合,然后进入双螺杆挤出机,挤出造粒,得到产品。
实施例2
一种用于3D打印的聚乳酸组合物,按重量份数计,其组成为:PLA 50份、PEG颗粒45份、聚氨酯材料8份、纳米级活性炭5份。
所述聚乳酸组合物的制备方法,包括如下步骤:
(1)、双羟基封端的PLA的制备
称取25g PLA于500mL两口烧瓶中,加入250mL的三氯甲烷,加热至75℃搅拌至充分溶解,加入5倍摩尔数的乙二醇(酯交换试剂)和2wt%的对甲苯磺酸(催化剂)的混合溶液进行酯交换反应,反应8-28小时;待反应结束后,自然冷却至常温,然后把溶液倒入预先装有1L去离子水的分液漏斗中,减压过滤得到透明液体,再通过旋转蒸馏和减压沉淀,最后获得PLA-diol单体,转化率82%。
(2)、聚氨酯材料的制备(本实施例即PEG-PLA中间体材料的制备)
称取0.001mol PLA-diol单体和0.001mol PEG于四口烧瓶中,加入20mL无水1,2-二氯乙烷溶解,在90℃共沸蒸馏除水,得无水溶液,加入适量的辛酸亚锡作为催化剂,搅拌充分后,升温至110℃,反应40h后,冷却至室温,然后用针管将HDI逐滴注入四口烧瓶中进行反应,HDI添加量为0.7ml;将反应后的溶液缓慢加入其8倍体积的乙醚溶液中沉淀,减压抽滤收集沉淀物,在40oC真空干燥至恒重,再将其溶解于10mL氯仿,减压过滤,在8倍体积的甲醇/乙醚(v/v=1/9)混合溶液中沉淀,收集沉淀物,获得PEG-PLA中间体材料,转化率为90%。
本实施例制备PEG-PLA中间体材料(即PLA-ran-PEG)的反应式如下:
Figure BDA0001551863720000051
(3)、原料混合、造粒
按重量份,将50份PLA、45份PEG颗粒、8份PEG-PLA中间体材料和5份纳米级活性炭在混合机中混合,然后进入双螺杆挤出机挤出造粒,得到产品。
实施例3
一种用于3D打印的聚乳酸组合物,按重量份数计,其组成为:PLA 40份、POE 40份、聚氨酯材料10份、纳米级活性炭10份。
本实施例聚乳酸组合物的制备方法同实施例2,区别在于,本实施例亲水性材料采用POE,步骤(2)中聚氨酯材料的制备即为POE-PLA中间体材料的制备,POE-PLA中间体材料的制备中连接剂采用HMDI。
本实施例中制备POE-PLA中间体材料(即PLA-ran-POE)的反应式如下:
Figure BDA0001551863720000061
实施例4
一种用于3D打印的聚乳酸组合物,按重量份数计,其组成为:PLA 45份、PVA 45份、聚氨酯材料5份、纳米级活性炭5份。
本实施例聚乳酸组合物的制备方法中,亲水性材料采用PVA,其它同实施例1。
本实施例中,制备聚氨酯材料(即PVA-PLA中间体材料、PLA-ran-PVA)的反应式如下:
Figure BDA0001551863720000071
实施例5
一种用于3D打印的聚乳酸组合物,按重量份数计,其组成为:PLA 45份、PEG颗粒50份、聚氨酯材料5份、纳米级活性炭8份。
所述聚乳酸组合物的制备方法,包括如下步骤:
(1)、双羟基封端的PLA的制备
称取25g PLA于500mL两口烧瓶中,加入250mL的三氯甲烷,加热至75℃搅拌至充分溶解,加入5倍摩尔数的1,4-丁二醇(酯交换试剂)和2wt%的对甲苯磺酸(催化剂)的混合溶液进行酯交换反应,反应8-28小时;待反应结束后,自然冷却至常温,然后把溶液倒入预先装有1L去离子水的分液漏斗中,减压过滤得到透明液体,再通过旋转蒸馏和减压沉淀,最后获得PLA-diol单体,转化率82%。
(2)、双异氰酸酯基封端的PEG(即PEG-diisocyanate)的制备
制备PEG-diisocyanate分为两个步骤。第一步,取四口烧瓶装上磁力搅拌子,除主口其他三个口均装上带阀门的抽气接头,置于烘箱100℃,0.5h,然后取出来,烧瓶主口套上橡皮塞,迅速移至双排管接口,三次排气,三次通N2,在N2保护下加入0.002mol 1,6-六亚甲基二异氰酸酯(HDI);第二步,取过量的PEG和适量的辛酸亚锡于100mL两口烧瓶中,用10mL无水1,2-二氯乙烷溶解,在90℃共沸蒸馏除水,待除水完毕后,接上减压蒸馏装置,把剩余的溶剂除掉得无水液体,取0.001mmol PEG量于5mL注射器中,插入上述N2保护的四口烧瓶中,在30℃下缓慢滴入,直至反应结束,等待下一步反应。
(3)、PLA-alt-PEG交替嵌段聚氨酯的合成
称取0.001mol PLA-diol于两口烧瓶中,加入15mL无水1,2-二氯乙烷溶解,在90℃共沸蒸馏除水,得无水PLA-diol溶液移至注射器中,缓慢加入到已经封端的PEG-diisocyanate,搅拌充分后,升温至65℃,反应72h后,冷却至室温,将溶液缓慢加入其8倍体积的乙醚溶液中沉淀,减压抽滤收集沉淀物,在40℃真空干燥至恒重,再将其溶解于10mL氯仿,减压过滤,在8倍体积的甲醇/乙醚(v/v=1/9)混合溶液中沉淀,收集沉淀物,在40℃真空干燥至恒重,产率约80%。
本实施例中PLA-alt-PEG交替嵌段聚氨酯的合成反应式如下:
Figure BDA0001551863720000091
(4)、原料混合、造粒
按重量份,将45份PLA、50份PEG颗粒、5份PLA-alt-PEG交替嵌段聚氨酯和8份纳米级活性炭在混合机中混合,然后进入双螺杆挤出机,挤出造粒,得到产品。
实施例6
一种用于3D打印的聚乳酸组合物,按重量份数计,其组成为:PLA 45份、PCL颗粒45份、PLA-alt-PCL交替嵌段聚氨酯5份、纳米级活性炭8份。
本实施例聚乳酸组合物的制备方法同实施例5,区别在于,本实施例中亲水性材料采用的是PCL,步骤(2)中,双异氰酸酯基封端的PCL(即PCL-diisocyanate)的制备中采用的连接剂是HMDI(即4,4'-二环己基甲烷二异氰酸酯)。
本实施例中,PLA-alt-PCL交替嵌段聚氨酯的合成反应式如下:
Figure BDA0001551863720000101
对本发明实施例1~5制备的聚氨酯材料的力学性能和亲水性能进行测试,结果如下:
表1本发明实施例1~5制备的聚氨酯材料的力学性能
材料 拉伸强度(MPa) 弹性模量(MPa) 断裂伸长率(%)
对比例 纯PLA 9.9 518.1 12.2
实施例1 PLA-ran-PCL 18.9 35.7 893.6
实施例2 PLA-ran-PEG 25.2 24.2 1269.9
实施例3 PLA-ran-POE 19.9 17.9 1566.9
实施例4 PLA-ran-PVA 40.5 82.3 366.7
实施例5 PLA-alt-PEG 8.4 76.2 1275.5
从表1可以看出:本发明实施例1~4制备的无规嵌段聚氨酯材料的拉伸强度均明显高于纯PLA,说明实施例1~4制备的无规嵌段聚氨酯材料的韧性比纯PLA有显著的提高,材料韧性的提高,有助于3D打印成型后模型扩大应用范围。实施例5制备的PLA-alt-PEG交替嵌段聚氨酯材料的拉伸强度稍低于纯PLA。
表2本发明实施例1~5制备的聚氨酯材料的亲水性能
Figure BDA0001551863720000111
材料的亲疏水性是影响其生物性能的一个很重要的因素,我们利用去离子水和二碘甲烷两种液体,通过悬滴法对本发明实施例1~5制备的聚氨酯材料的液体接触角,表面自由能等进行了测量。测量结果如上表2所示。
从表2中可以看出,实施例1~5制备的聚氨酯材料比纯PLA材料有更低的水接触角,也就是说,有更好的亲水性。实施例5制备的交替嵌段聚氨酯材料比实施例1~3制备的无规嵌段聚氨酯材料有更低的水接触角,即有更好的亲水性。这主要是由于交替材料表面有规律的网格结构让其表面更加粗糙。这样,当液滴滴在材料表面时将接触到更多的材料表面积,使得材料的水接触角更小。实施例4制备的无规嵌段聚氨酯材料PLA-ran-PVA比实施例5制备的交替嵌段聚氨酯材料PLA-alt-PEG有更低的水接触角,即有更好的亲水性。
本发明各实施例最终制备的聚乳酸组合物作为3D打印材料,在实际应用过程中,使用喷涂方式对打印模型进行水颜料染色,具有以下特点:
1.水颜料容易附着在打印模型上;
2.颜料在模型上的着色力强,不易脱落;
3.颜料喷涂在打印模型上,能够保留较好的色值和颜色鲜艳度;
4.颜料附着在打印模型上后,不会对打印产生其它附加的影响。

Claims (3)

1.一种用于3D打印的聚乳酸组合物,其特征在于:按重量份数计,其组成为:PLA 45份、PVA 45份、聚氨酯材料5份、纳米级活性炭5份;
所述聚氨酯材料为PLA-ran-PVA,所述PLA-ran-PVA的结构式如下:
Figure FDA0003081194620000011
2.制备如权利要求1所述的聚乳酸组合物的方法,其特征在于:按所述重量份数取PLA、PVA、聚氨酯材料和纳米级活性炭四种原料,经混合、造粒,即得产品,所述聚氨酯材料为PLA-ran-PVA,所述PLA-ran-PVA的结构式如下:
Figure FDA0003081194620000012
3.权利要求1所述的聚乳酸组合物作为3D打印材料的应用。
CN201810051244.0A 2018-01-18 2018-01-18 一种用于3d打印的聚乳酸组合物及其制备方法 Active CN110054875B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810051244.0A CN110054875B (zh) 2018-01-18 2018-01-18 一种用于3d打印的聚乳酸组合物及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810051244.0A CN110054875B (zh) 2018-01-18 2018-01-18 一种用于3d打印的聚乳酸组合物及其制备方法

Publications (2)

Publication Number Publication Date
CN110054875A CN110054875A (zh) 2019-07-26
CN110054875B true CN110054875B (zh) 2021-10-29

Family

ID=67315627

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810051244.0A Active CN110054875B (zh) 2018-01-18 2018-01-18 一种用于3d打印的聚乳酸组合物及其制备方法

Country Status (1)

Country Link
CN (1) CN110054875B (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113429776B (zh) * 2021-07-21 2022-12-06 成都航空职业技术学院 一种用于精密铸造熔模的低温3d打印可降解绿色材料及其制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104558504A (zh) * 2015-01-12 2015-04-29 杨凌瑞丰环保科技有限公司 一种聚乳酸-聚乙二醇共聚物的制备方法
CN105440609A (zh) * 2015-04-16 2016-03-30 湖南工业大学 一种高强韧聚乳酸基材料及其制备工艺
EP3012278A1 (en) * 2014-10-21 2016-04-27 Samsung Electronics Co., Ltd. Polyurethane elastomer, thermoplastic resin composition comprising the polyurethane elastomer, molded article made of the thermoplastic resin composition, and method of preparing the polyurethane elastomer
CN107236270A (zh) * 2017-07-24 2017-10-10 南昌航空大学 一种改性聚乳酸3d打印细丝材料及制备方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3012278A1 (en) * 2014-10-21 2016-04-27 Samsung Electronics Co., Ltd. Polyurethane elastomer, thermoplastic resin composition comprising the polyurethane elastomer, molded article made of the thermoplastic resin composition, and method of preparing the polyurethane elastomer
CN104558504A (zh) * 2015-01-12 2015-04-29 杨凌瑞丰环保科技有限公司 一种聚乳酸-聚乙二醇共聚物的制备方法
CN105440609A (zh) * 2015-04-16 2016-03-30 湖南工业大学 一种高强韧聚乳酸基材料及其制备工艺
CN107236270A (zh) * 2017-07-24 2017-10-10 南昌航空大学 一种改性聚乳酸3d打印细丝材料及制备方法

Also Published As

Publication number Publication date
CN110054875A (zh) 2019-07-26

Similar Documents

Publication Publication Date Title
CN101941987B (zh) 一种异辛醇聚氧乙烯聚氧丙烯醚磷酸酯的制备方法
CN101952347B (zh) 高官能度聚醚醇及其制备方法和用途
CN104628982B (zh) 一种碱木质素基水性聚氨酯的制备方法
CN103524696B (zh) 一种硅烷改性的磺酸型水性聚氨酯乳液及其制备方法
CN105754122B (zh) 一种亲水性聚己内酯薄膜的制备方法
TWI300078B (en) Copolymers of tetrahydrofuran, ethylene oxide and an additional cyclic ether
CN105585701A (zh) 一种聚醚改性共聚酯连续式制备方法
CN104470968B (zh) 聚合物、其合成方法以及包含这些聚合物的组合物
WO2013116027A1 (en) Process for preparing high molecular weight polymers by polymerizing epoxide monomers
CN110054875B (zh) 一种用于3d打印的聚乳酸组合物及其制备方法
CN101415747A (zh) 利用大环低聚物制备共聚物的方法以及由此制成的共聚物
CN105440240A (zh) 制备水性聚氨酯离聚物及其分散体的连续式生产方法
CN103180286B (zh) 用于制造基于可再生源的柠檬酸酯和酰化的柠檬酸酯的方法
CN104302692B (zh) 基于聚亚烷基碳酸酯的树脂膜及其制备方法
CN108715638B (zh) 一种亲水性聚(ω-己内酯)及其应用
CN104356348A (zh) 一种硬质耐水解低发孔性高剥离聚氨酯树脂及其制备方法
CN116396474B (zh) 一种具有多种用途的超支化聚醚酯及其制备方法
CN108456296A (zh) 一种用于服装革的水性聚氨酯树脂及其制备方法
CN1370790A (zh) 作为聚氯乙烯增塑剂的具有高度支化结构的脂族聚酯化合物和包含它的柔性聚氯乙烯共混物
CN102934165A (zh) 衍生自基于双失水己糖醇的非对称性单体的新聚酯醚
CN111004381B (zh) 多功能表面活性剂及其制备方法和在喷墨印花墨水中的应用
CN105331195A (zh) 密封的可见光吸收染料聚氨酯分散体
CN114195998A (zh) 一种连续化缩聚制备高强度聚乙醇酸的工艺
CN110698631B (zh) 一种水性聚氨酯乳液及其制备方法和用途
CN1624026A (zh) 由树状支化分子制备交联聚合物膜的方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant