环氧树脂固化,用什么固化剂能使环氧树脂固化后耐温能达到200度

2025-03-06 16:48:48
推荐回答(5个)
回答1:

还没见过环氧树脂胶固化后是软的,效果不好,而且时间久了会析出,影响产品性能,室温下难以固化单组份环氧树脂胶需要的固化温度比较高,外增韧就是一些酯类的增塑剂。第一可以选择分子链较长的固化剂或者选择内增韧剂和外增韧剂,降低分子的交联密度和玻璃化温度。环氧增韧一般有加入丁腈橡胶或者聚硫橡胶,固化剂可以选用聚酰胺类的固化剂。上述三种是内增韧,如硅微粉。硫酸钡之类。单组份环氧树脂胶本身的固化温度就很高。第二可以选用改性环氧,里面有溶剂和引入长分子链的环氧组成,固化后比较软。另外尽量少加一些增加硬度的填料,硬度高是肯定的,玻璃化温度自然也高

回答2:

碳酸钙只能增加硬度提高固化后耐温要加入特殊添加剂:受力?介质?等,不能增加抗温性能。请把使用工况说清楚,根据企业要求调配胶液。
用胺类固化剂
TG最高有220。
生产的耐高温环氧树脂,应该从环氧树脂及固化剂两方面考虑单纯使用E-44配合固化剂想要耐温达到200度左右估计很难啊
总结你的要求,这属于H或F级的绝缘材料,取决于你是否长期200度工作.
1.绝缘效果好,
2.耐温200度,
3.不开裂.

环氧树脂选用的材料一般是E51或酚醛树脂(注意游离酚对电性能的影响)以及一些特殊的环氧树脂,比如脂环族环氧树脂.

固化剂的选择基本在芳香胺(包括改性芳香胺)或酸酐类固化剂,当然主要推荐就是酸酐固化剂,因为这类固化剂的电性能比较好.

当然填料的选择对抗开裂性也很重要.比如一些针状的填料会对抗开裂性有好处
没有固化后耐温200C的环氧固化剂
酸酐可以试一下

回答3:

总结你的要求,这属于H或F级的绝缘材料,取决于你是否长期200度工作.
1.绝缘效果好,
2.耐温200度,
3.不开裂.

环氧树脂选用的材料一般是E51或酚醛树脂(注意游离酚对电性能的影响)以及一些特殊的环氧树脂,比如脂环族环氧树脂.

固化剂的选择基本在芳香胺(包括改性芳香胺)或酸酐类固化剂,当然主要推荐就是酸酐固化剂,因为这类固化剂的电性能比较好.

当然填料的选择对抗开裂性也很重要.比如一些针状的填料会对抗开裂性有好处

回答4:

单纯使用E-44配合固化剂想要耐温达到200度左右估计很难啊,应该从环氧树脂及固化剂两方面考虑。
我这里生产的耐高温环氧树脂,TG最高有220,有兴趣可以聊聊
0512-52351007 叶生

回答5:

没有固化后耐温200C的环氧固化剂

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