摘要：【中文】本发明涉及3D打印材料领域，尤其涉及一种可降解3D打印树脂单体。本发明提供一种可降解3D打印树脂单体，这种可降解3D打印树脂单体分子结构上含有丙烯酸双键和丰富的酸酐基团，现有技术中通常采用PLA、ABS、PLGA、蜡树脂等作为PDMS微流控芯片的阳模，去除阳模的溶剂为酸性、碱性或有机溶液，且阳模去除时间较长，本法所制备的3D打印树脂单体聚合之后可采用DLP光固化3D打印制作PDMS微流控芯片的阳模，实现3D打印复杂三维微通道结构，待PDMS微流控芯片固化成型后，在不破坏PDMS微流控芯片微通道的情况下，作为阳模的3D打印树脂可在温水中快速自行水解。 【EN】The invention relates to the field of 3D printing materials, in particular to a degradable 3D printing resin monomer. The invention provides a degradable 3D printing resin monomer, wherein the molecular structure of the degradable 3D printing resin monomer contains acrylic double bonds and rich anhydride groups, PLA, ABS, PLGA, wax resin and the like are generally adopted as a male die of a PDMS microfluidic chip in the prior art, the solvent for removing the male die is acidic, alkaline or organic solution, and the male die removing time is long.

摘要：【中文】本发明涉及无机材料技术领域，尤其涉及一种改性纳米氧化锌及其在光固化涂料中的应用。本发明提供一种改性纳米氧化锌，由光引发剂、聚乙二醇、马来酸酐反应制得，解决了作为白色颜料的纳米氧化锌在聚酯涂料中易团聚、沉降的问题，本发明所制备的改性纳米氧化锌分子结构上含有光引发活性的基团，可以直接作为光固化涂料的光引发剂使用，相比普通的光引发剂，具有较低的比表面能，光引发效果也有所提高；改性纳米氧化锌分子结构上分子量较大的烷基，使得纳米氧化锌表面由亲水疏油性能变为亲油疏水，增强了纳米氧化锌在有机溶剂中的稳定性；提高了无机材料纳米氧化锌与聚酯基体的相容性，进一步提高了光固化涂层的表面附着力。 【EN】The invention relates to the technical field of inorganic materials, in particular to modified nano zinc oxide and application thereof in photocureable coating. The invention provides a modified nano zinc oxide, which is prepared by the reaction of a photoinitiator, polyethylene glycol and maleic anhydride, and solves the problems that nano zinc oxide as a white pigment is easy to agglomerate and settle in a polyester coating; alkyl with larger molecular weight on the molecular structure of the modified nano zinc oxide enables the surface of the nano zinc oxide to be changed from hydrophilic oleophobic property to oleophilic hydrophobic property, thereby enhancing the stability of the nano zinc oxide in an organic solvent; the compatibility of the inorganic material nano zinc oxide and the polyester matrix is improved, and the surface adhesive force of the photocuring coating is further improved.

摘要：【中文】本发明涉及生物高分子材料领域，尤其涉及一种弹性可降解3D打印多孔支架及其制备方法。为了解决环缩醛基可降解生物材料中引入丙烯酸酯端基，未反应的丙烯酸酯基在体内容易与蛋白质上的氨基及巯基进行迈尔克加成反应，从而造成对周围组织的刺激及毒性，同时交联的丙烯酸酯基团在体内依然有可能降解产生酸性基团，导致局部酸性环境刺激周围组织并加速材料水解的问题，本发明提供一种弹性可降解3D打印多孔支架，以环缩醛聚合单体、PEGDAC为聚合单体，与含巯基的交联剂交联固化形成软骨组织修复的多孔支架，所制备的多孔支架具有较好的回弹性，能够更好的应对软骨组织修复过程中人体活动对多孔支架造成的挤压，有利于人体软骨组织更好的修复。 【EN】The invention relates to the field of biological high polymer materials, in particular to an elastic degradable 3D printing porous scaffold and a preparation method thereof. In order to solve the problems that an acrylate end group is introduced into a cyclic acetal group degradable biological material, unreacted acrylate groups are easy to carry out Michael addition reaction with amino groups and sulfydryl groups on proteins in vivo, so that stimulation and toxicity to surrounding tissues are caused, and meanwhile, cross-linked acrylate groups are still likely to be degraded in vivo to generate acid groups, so that local acid environments stimulate the surrounding tissues and the hydrolysis of the material is accelerated, the invention provides an elastic degradable 3D printing porous scaffold.