一种环氧大豆油基丙烯酸-聚氨酯树脂的制备及性能
Preparation and Characterization of an Epoxy Soybean Oil-Based Acrylate-Polyurethane Resin
黄英姿 1黄潼欣 1周梦璇 1叶庆忠 2肖亚亮 3胡洋 1杨卓鸿1
作者信息
- 1. 华南农业大学材料与能源学院生物基材料与能源教育部重点实验室,广东广州 510642
- 2. 广州佐晟化妆品有限公司,广东广州 510900
- 3. 广东蓝洋科技有限公司,广东佛山 528100
- 折叠
摘要
新型可再生生物基树脂的开发是实现石油基相关产品的替代及绿色可持续发展的重要手段.文中利用马来酸酐(MA)、甲基四氢苯酐(MTHPA)、丙烯酸羟乙酯(HEA)和环氧大豆油(ESO)为原料,一锅法获得环氧大豆油基丙烯酸树脂(AESO).在所得树脂中添加一定量的异氰酸酯或HEA半封端的异氰酸酯,得到生物基含量30%以上的环氧大豆油基丙烯酸-聚氨酯树脂.探究了不同异氰酸酯种类及添加量对树脂光固化活性、热稳定性、拉伸性能等的影响.通过动态力学热分析、力学性能及流变黏度等测试分析结果表明,HEA结构的引入可以使聚氨酯光固化膜玻璃化转变温度升至65.3℃,储能模量升至1417.9 MPa,拉伸强度最高可达27.4 MPa,断裂伸长率可达67.2%,黏度降低至43.4 Pa·s.同时发现,上述2种树脂凝胶率达86%以上,均具有碱溶性、优异的耐溶剂性及高光泽度.该方法为环氧大豆油基丙烯酸-聚氨酯树脂的开发提供了新的思路,有助于拓宽其在生物基光固化涂料领域的应用.
Abstract
The development of new renewable bio-based resins is an important means to realize the substitution of petroleum-based related products and green and sustainable development.In this paper,epoxy soybean oil-based acrylic resin(AESO)was prepared by one-pot method using maleic anhydride(MA),methyl tetrahydrophthalic anhydride(MTHPA),hydroxyethyl acrylate(HEA)and epoxy soybean oil(ESO)as raw materials.A certain amount of isocyanate or HEA semi-sealed isocyanate was added to the resin to obtain an epoxy soybean oil-based acrylate-polyurethane resin with a bio-base content of more than 30%.The effects of different isocyanate types and amounts on photocuring activity,thermal stability and tensile properties of resin were investigated.Through the dynamic thermo-mechanical,mechanical properties and rheological viscosity tests,the results show that the introduction of HEA structure can increase the glass transition temperature to 65.3℃,the energy storage modulus to 1417.9 MPa.the tensile strength is up to 27.4 MPa and the fracture elongation is 67.2%.The viscosity is reduced to 43.4 Pa·s.At the same time,the gel-found rate of the above two resins is more than 86%,both of which have alkali soluble,excellent solvent resistance and high gloss.This study provided a new idea for the development of epoxy soybean oil-based acrylate-polyurethane resin,which is helpful to broaden its application in the field of bio-based light curing coating.
关键词
大豆油/光固化/一锅法/生物基/丙烯酸-聚氨酯树脂Key words
soybean oil/light curing/one pot method/bio-based/acrylic-polyurethane resin引用本文复制引用
基金项目
广东省科技计划(2023B0101020002)
广东省科技计划(2022A0505050062)
广东省科技计划(2022A1515240079)
广东省企业科技特派员项目()
出版年
2024
NETL
NSTL
万方数据