Synthesis and properties of phosphorus-containing bio-based epoxy resin from itaconic acid

A phosphorus-containing bio-based epoxy resin (EADI) was synthesized from itaconic acid (IA) and 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO). As a matrix, its cured epoxy network with methyl hexahydrophthalic anhydride (MHHPA) as the curing agent showed comparable glass- transition temperature and mechanical properties to diglycidyl ether in a bisphenol A (DGEBA) system as well as good flame retardancy with UL94 V-0 grade during a vertical burning test. As a reactive flame retardant, its flame-resistant effect on DGEBA/MHHPA system as well as its influence on the curing behavior and the thermal and mechanical properties of the modified epoxy resin were investigated. Results showed that after the introduction of EADI, not only were the flame retardancy determined by vertical burning test, LOI measurement, and thermogravimetric analysis significantly improved, but also the curing reactivity, glass transition temperature (Tg), initial degradation temperature for 5% weight loss (Td(5%)), and flexural modulus of the cured system improved as well. EADI has great potential to be used as a green flame retardant in epoxy resin systems

How a bio-based epoxy monomer enhanced the properties of diglycidyl ether of bisphenol A(DGEBA)/grapheme composites

A bio-based epoxy monomer (GA-II) was synthesized from renewable gallic acid. The aromatic group contained made it capable of being absorbed onto the surface of graphene via strong π–π interactions, which was proven by Raman spectra and UV spectra. The GA-II anchored graphene was easily homogeneously dispersed in the epoxy resin. After solidification, the graphene/epoxy composites demonstrated superior performances in terms of good mechanical properties, excellent thermal conductivity, as well as high electrical conductivity. With the addition of only 2 wt% GA-II/graphene, the tensile strength, tensile modulus, flexural strength and flexural modulus of the composites were improved by 27%, 47%, 9% and 21%, respectively. The thermal and electrical conductivities were also improved by 12-fold (from 0.15 to 1.8 W m？1 K？1) and 8 orders (from 7.0 × 10？15 to 3.28 × 10？5 s cm？1), respectively. This work provided us with an environmentally friendly agent with high efficiency for graphene dispersion and demonstrated an efficient method for fabricating epoxy/graphene composites with superior properties

一种松香基环氧树脂及其制备方法

本发明公开了一种适合于聚酯粉末涂料固化的松香基环氧树脂，为式Ⅰ或式Ⅱ所示结构的化合物，其中，R为脂肪族链段或芳香族链段。还公开了该松香基环氧树脂的制备方法，包括：以松香为原料加入催化剂Ⅰ和马来酸酐通过Diels-Alder反应得到马来海松酸酐，然后利用含氨基和羧基的化合物与马来海松酸酐反应制备松香基多元酸，最后将松香基多元酸、环氧卤代烷、催化剂Ⅱ和碱通过一系列化学反应制备得到松香基环氧树脂。本发明松香基环氧树脂，制备工艺环保，制造成本低廉，主要用于固化聚酯粉末涂料

含有双马来酰亚胺结构的松香基环氧树脂及其制备方法

本发明公开了一种含有双马来酰亚胺结构的松香基环氧树脂，为式I所示结构的化合物：式I中，R为脂肪族链段或芳香族链段。还公开了该松香基环氧树脂的制备方法，包括：以松香为原料加入催化剂A和马来酸酐通过Diels-Alder反应得到马来海松酐，然后利用二元胺与马来海松酸反应制备含有双马来酰亚胺结构的松香二元酸，最后将松香二元酸、环氧卤代烷、催化剂B和碱通过一系列化学反应制备得到含有双马来酰亚胺结构的松香基环氧树脂。本发明松香基环氧树脂同时具有松香的氢菲环结构单元和酰亚胺结构单元，能够充分发挥酰亚胺结构单元耐高温的优点，且其制备方法，操作简便，适于工业化生产

一种松香基增塑剂及其制备方法

本发明公开了一种松香基增塑剂及其制备方法，该松香基增塑剂为式I所示结构的化合物，其中，R1为数均分子量在200～4000的聚醚链段或聚酯链段；R2选自直链烷基、支链烷基或无机金属离子。该增塑剂的制备方法，包括：以马来海松酸酐和端基为氨基的聚醚或者端基为氨基的聚酯为原料进行一系列反应，得到松香基增塑剂。本发明松香基增塑剂在使用时利用松香酸中氢菲环结构庞大的空间立体位阻效应，让氢菲环结构起到一种“锚”的作用，将增塑用聚醚或聚酯固定在塑料基体中，从而有效阻止了增塑用聚醚或聚酯在塑料基体中的迁移和渗出，且制备方法操作简便，适于工业化生产

基于2,5-呋喃二甲酸的环氧树脂及其制备方法和应用

本发明公开了一种基于2,5-呋喃二甲酸的环氧树脂，为式I结构的化合物，直接采用生物来源的2,5-呋喃二甲酸作为原料制备，是一种生物基、绿色、环保产品，具有节约石油资源和保护环境的双重功效。本发明还公开了一种基于2,5-呋喃二甲酸的环氧树脂的制备方法，该制备方法制备简单，可控制好，易于实施。本发明还公开了一种基于2,5-呋喃二甲酸的环氧树脂的应用，可适用于复合材料、环氧胶黏剂和涂料等领域中，如可用于制备含基于2,5-呋喃二甲酸的环氧树脂的固化物，作为复合材料，具有优异的力学性能和热学性能。式