CN105859956A - 一种用于实体材料的光敏树脂及其制备方法 - Google Patents
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Abstract
本发明公开了一种用于实体材料的光敏树脂及其制备方法，按照重量百分比计，由以下几部分组成的：低聚物30‑60%；单体20‑40%；光引发剂1‑10%；稀释剂10‑20%；消泡剂0.1‑4%；流平剂0.1‑4%；纳米级二氧化硅0.1‑5%。其制备方法，包括以下几步：（1）按照各材料比例备好原料；（2）将各组分均匀混合，即可制备出用于实体材料打印的光敏树脂材料，其黏度在20‑30厘泊。本发明制备的用于实体材料的光敏树脂，属于国内先例，与国外同类产品相比，在各种性能得到保证的前提下，大幅度降低成本、提高实体模型的物理力学性能，可以制作小批量模塑零件产品生产的模具，能够满足更多国内外用户的使用需求。
Description
技术领域
本发明涉及一种可以用于实体材料的光敏树脂，更具体的说是涉及一种光固化3D打印机的用于实体材料的光敏树脂，属于光固化材料技术领域。
背景技术
当前三维打印成型的喷墨UV固化成型工艺是，将可以UV固化的光敏树脂，用喷墨方法喷出，通过UV光的照射固化，然后一层一层叠加而形成所需要的模型，所用的光敏树脂均是通过UV照射固化后得到一定结构强度的树脂，分为实体材料跟支撑材料，而目前国内没有这种符合要求的用于实体材料的光敏树脂，均由国外垄断，使得我国光固化3D打印技术受到很大限制。
发明内容
本发明的目的在于，提供一种用于实体材料光敏树脂。
本发明提供的技术方案如下：一种用于实体材料的光敏树脂，其特征在于：按照重量百分比计，由以下几部分组成的：
低聚物30-60%；
单体20-40%；
光引发剂1-10%；
稀释剂10-20%；
消泡剂0.1-4%；
流平剂0.1-4%；
纳米级二氧化硅0.1-5%。
所述低聚物为羧基丙烯酸乙酯、氨基甲酸酯丙烯酸酯、丙烯酸冰片酯、丙烯酸辛酯葵酯、二丙二醇二丙烯酸酯、乙二醇二丙烯酸酯、三丙二醇二丙烯酸酯、丙氧基化季戊二醇二丙烯酸酯、乙氧基化三羟甲基丙烷三丙烯酸酯、甘油化三丙烯酸酯、三羟甲基丙烷三丙烯酸酯、一缩二三羟甲基四丙烯酸酯、聚醚改性四丙烯酸酯、季戊四醇丙烯酸酯和季戊四醇三丙烯酸酯混合物。
所述光引发剂，光敏树脂中添加不超过光固化单体树脂质量1-10%的光引发剂。
其中，纳米级二氧化硅是本发明的核心所在，常见的光敏树脂经过UV照射固化后没有一定的力学性能（虽然具备一定的力学性能），但无法达到3D打印的零件性能要求，加入一定比例的纳米级二氧化硅，均匀分散在光敏树脂中，经过UV照射固化后，充分补强了树脂，使得打印后的模型具有更高的力学性能，满足用户的使用要求，同时纳米二氧化硅均匀分散在树脂里，固化后可大大减少其体积收缩率，减少打印零件的变形，提高零件的打印精度。
一种用于实体材料的光敏树脂，其制备方法包括以下几个步骤：
（1）准备原料：一种用于实体材料的光敏树脂；
（2）使用水浴加热混合容器，在避光的条件下（在暗红色光线下），将单体、低聚物、纳米级二氧化硅、分批依次加入，使用电动搅拌棒匀速搅拌均匀，再加入光引发剂用电动搅拌棒匀速搅拌均匀，即可制备出能够应用于实体材料的光敏树脂。
有益效果
本发明的光敏树脂的优点，是可以用压电喷头按要求喷出平面图形，用紫外线照射后，形成一层有一定结构强度和一定厚度的树脂图形薄膜，通过这种一层层的叠加，用这种光敏树脂，就能打印出各式各样的模型，强化打印成型的模型细节，提高模型的综合表现力，从而就全面提高了喷墨UV固化成型工艺打印成型的模型质量。
本发明制备的用于实体材料的光敏树脂，属于国内先例，与国外同类产品相比，在各种性能得到保证的前提下，大幅度降低成本，能够满足更多国内外用户的使用需求。
具体实施方式
下面结合试验实例以及具体实施方式对本发明作进一步的详细描述。但不应将此理解为本发明上述主题的范围仅限于以下的实施例，凡是基于本发明内容所实现的技术均属于本发明的范围。
实施例一，一种用于实体材料的光敏树脂，其原料按照重量百分比计，由以下几组分组成：
低聚物30-60%；
单体20-40；
光引发剂2%；
稀释剂10-20%；
消泡剂0.1-4%；
流平剂0.1-4%；
纳米级二氧化硅1-5%。
制备本例用于实体材料的光敏树脂，所使用的光引发剂为2%，所制备的光敏树脂在光固化3D打印机中测试结果，达到了国外产品的性能指标。
实施例二，一种用于实体材料的光敏树脂，其原料按照重量百分比计，由以下几组分组成：
低聚物30-60%；
单体20-40；
光引发剂3%；
稀释剂10-20%；
消泡剂0.1-4%；
流平剂0.1-4%；
纳米级二氧化硅1-5%。
制备本例用于实体材料的光敏树脂，所使用的光引发剂为3%，所制备的光敏树脂在光固化3D打印机中测试结果，达到了国外产品的性能指标。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本领域的技术人员在本发明所揭露的技术范围内，可不经过创造性劳动而想到的变化或替换，都应涵盖于本发明的保护范围之内，于此本发明的保护范围应该以权利要求书所限的保护范围为准。
Claims (3)
1.一种用于实体材料的光敏树脂，其特征在于：按照重量百分比计，由以下几部分组成的：低聚物30-60%；单体20-40%；光引发剂1-10%；稀释剂10-20%；消泡剂0.1-4%；流平剂0.1-4%；纳米级二氧化硅0.1-5%；光敏树脂的粘度为20-30厘泊，表面张力16-36 mN/m。
2.根据权利要求1所述的一种用于实体材料的光敏树脂，其特征在于：所述低聚物为羧基丙烯酸乙酯、氨基甲酸酯丙烯酸酯、丙烯酸冰片酯、丙烯酸辛酯葵酯、二丙二醇二丙烯酸酯、乙二醇二丙烯酸酯、三丙二醇二丙烯酸酯、丙氧基化季戊二醇二丙烯酸酯、乙氧基化三羟甲基丙烷三丙烯酸酯、甘油化三丙烯酸酯、三羟甲基丙烷三丙烯酸酯、一缩二三羟甲基四丙烯酸酯、聚醚改性四丙烯酸酯、季戊四醇丙烯酸酯和季戊四醇三丙烯酸酯混合物。
3.如权利要求1所述的一种用于实体材料的光敏树脂的制备方法，包括以下几个步骤：
1）准备原料；
2）使用水浴加热混合容器，在避光的条件下，将单体、低聚物、纳米级二氧化硅、分批依次加入，使用电动搅拌棒匀速搅拌均匀，再加入光引发剂用电动搅拌棒匀速搅拌均匀，即可制备出能够应用于实体材料的光敏树脂。
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