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multifunctional epoxy resin has the biggest characteristic of multiple functional groups. due to its high cross-link density after curing, it maintains excellent mechanical properties and insulation performance at high temperature. it is often used in high-temperature adhesives and composite materials, especially in carbon fiber prepregs.
本期内容里，我们主要介绍三款新纳希产品（s-186，s-510 和 s-720），通过对比分析，我们将分享不同牌号的特征和应用，以飨读者。
in this article, we mainly introduce three kinds of synasia products (s-186, s-510 and s-720). through comparative analysis, we will share their different features and applications with readers.
新纳希牌号 s-186 是一款三官能团缩水甘油酯类环氧树脂，性状为无色至浅黄色液体，25℃粘度在2000~3500cps范围内，可以使用缠绕工艺，用于高压气瓶、电机转子等碳纤维复合材料。
synasia product grade s-186 is a trifunctional glycidyl ester epoxy resin. its appearance is colorless to light yellow liquid. its viscosity at 25℃ ranges from 2000cps to 3500cps. this grade can be applied in the winding process, suitable for high-pressure gas cylinders, motor rotors and other carbon fiber composite materials.
由于分子中含有一个脂环环氧基和两个缩水甘油酯基，所以 s-186 既具有脂环族环氧化合物的耐高温和耐候性，又具有缩水甘油酯环氧化合物的高强度和高粘结性。
as its molecule contains one cycloaliphatic epoxy group and two glycidyl ester groups, s-186 can not only offer high temperature resistance and weather resistance of the cycloaliphatic epoxy compound, but it also possesses high strength and high adhesion of the glycidyl ester epoxy compound.
因存在高反应活性的缩水甘油酯基，故 s-186 的反应活性比一般的脂环族环氧树脂大，环氧值较高，与固化剂的溶解性能好，可采用酸酐及胺类作为固化剂。固化产物热稳定性好，以间苯二胺固化的马丁耐热温度为185℃，而以70#酸酐固化的马丁耐热温度为156℃。
due to the presence of highly reactive glycidyl ester group, the reactivity of s-186 is greater than that of cycloaliphatic epoxy resins. it offers a higher epoxy value and better solubility with curing agent. anhydrides and amines can be used as the hardener of s-186. the cured product has good thermal stability. its martens heat resistance temperature after curing with m-phenylenediamine reaches 185°c. its martens heat resistance temperature after curing with 70# anhydride is 156°c.
1. aerospace: structural materials for high-performance aircraft;
2. nuclear industry: components with special mechanical properties;
3. electronics: high temperature resistant adhesives, high temperature resistant insulating casting materials and encapsulating materials, etc.
synasia product grade s-510 is a trifunctional mixed type epoxy resin, because it comes with both glycidyl amine group and glycidyl ether group. it is yellow liquid with purity of over 95% and viscosity range at 25℃ from 400cps to 850cps. due to its fast curing speed, strong heat resistance and good stability, it is often used in high temperature resistant adhesives, carbon fiber composite materials, casting and sealing of micro motor parts and many others.
由于分子中含有三个环氧基团和一个芳香环，因此 s-510 固化后交联密度高，固化产物具有优异的机械性能和耐热性，同时也能给予优异的抗溶剂和抗腐蚀能力，通常选用胺类和酸酐类作为固化剂。
because its molecule contains three epoxy groups and one aromatic ring, s-510 has a high cross-linking density after curing. the cured product has excellent mechanical properties and heat resistance, while also giving excellent resistance to solvent and corrosion. generally amines and anhydrides are used as the curing agent of s-510.
can be used for:
1. electronic grade ink resin;
2. rtm main resin;
3. high temperature resistant and high performance composite base resin.
新纳希牌号 s-720，简称 tgddm，是一款四官能团缩水甘油胺类环氧树脂，性状为黄色至红棕色粘稠状液体，50℃粘度在3000-6000cps范围内，常用于耐高温复合材料和高温胶等领域。
synasia product grade s-720, referred to as tgddm, is a four-functional glycidyl amine epoxy resin. it is yellow to reddish-brown viscous liquid. its viscosity at 50℃ ranges from 3000cps to 6000cps. this product is often used in high temperature resistant composites and high-temperature adhesives.
因分子中有四个环氧基团和两个芳香环，所以 s-720 活性可以达到双酚a型环氧树脂的10倍，其固化速度快，固化产物交联密度极大，收缩率低，具有高tg、高强度和较长的储存期，通常也选用胺类和酸酐类作为固化剂。
because there are four epoxy groups and two aromatic rings in the molecule, the activity of s-720 can reach 10 times that of bisphenol a epoxy resin. its curing speed is fast and the cross-linking density of the cured product is extremely large. other advantages of s-720 include low shrinkage rate, high tg, high strength and long storage period. usually s-720 is used with the curing agent like amines and anhydrides.
1. wind power composite materials;
2. aerospace composite materials;
3. high temperature resistant adhesives.
nantong synasia new material co., ltd. focuses on the production of various cycloaliphatic epoxy resins and multifunctional epoxy resins. after more than ten years of united efforts by all employees, synasia has become the leading brand at home and abroad. welcome all to sending private letters to us and we will try our best to answer all of your questions~
in the next issue, we will talk about the specific value of tg of different multifunctional epoxy resins, as well as the use of different anhydrides or amine agents for multifunctional epoxy resins. scan the qr code to keep your focus on us. see you next time!
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