Acid Anhydride Curing Agent Definition
Curing agent refers to a kind of substance which can transform soluble and meltable linear structure polymer compound into insoluble body structure. The acid anhydride curing agent is an important kind of curing agent with large dosage and wide application.
Application advantages:
Compared with polyamine curing agent, anhydride curing agent has many advantages.
In terms of operation technicality, there are mainly the following points:
1) Low volatility, low toxicity and little irritation to skin;
2) The blending amount of epoxy resin is large, and the viscosity is low after mixing with epoxy resin. More fillers can be added to modify the epoxy resin, which is conducive to reducing the cost.
3) It has long service life and easy operation.
From the feature of the cured product, its main characteristics are as follows:
1) Because of the slow curing reaction, the shrinkage rate is small.
2) It has high thermal deformation temperature, excellent heat resistance and light color of curing products.
3) Excellent mechanical and electrical properties.
Application shortcomings
1) The curing temperature of anhydride curing agent is relatively high and the curing period is relatively long.
2) It is not easy to modify; it is easy to absorb moisture to form free acid during storage, which will cause adverse effects (slow curing speed and poor properties of cured products);
The alkali resistance and solvent resistance of the cured products are relatively poor, and so on. The curing agent definitionand curing agent meaningare pretty sample.
Jiaxing Nanyang Wanshixing Chemical Co., Ltd. is one of professional epoxy resin and hardener suppliers. We provide MTHPA WNY1001, MTHPA WNY1002 and so on. Want to know more? Please contact us.
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