Epoxy floor construction of epoxy reactive diluent can maintain the performance of epoxy cured. Monoepoxides due to lower crosslink density of the cured product, the product of the heat distortion temperature decreased, and the epoxy active diluent has high crosslinking density, so the performance is better than single ring aromatic oxide loss, reactive diluents due to the rigid structure with benzene ring, so that the loss of thermodynamic properties of aliphatic. The use of long carbon chain active diluent can improve the flexural strength and impact toughness of the cured product, and the amount of curing agent has no effect on the hardness of the cured product, while the thermal expansion coefficient increases. The acid and alkali resistance of the cured product of the aromatic active diluent was not changed, but the solvent resistance decreased. Epoxy floor construction commonly used diluent type
Epoxy floor construction of epoxy modified agent relative to the unmodified system usually prolong the gelation time of the mixture, usually aliphatic epoxy modified low reactivity, such as aliphatic carbon chain from C12 to C14 glycidyl ether (AGE) can significantly increase the mixture of gelling time, and aromatic on gel time effect small, in addition to chemical types of molecular weight will also affect the reaction activity, low molecular weight epoxy modified high reactivity.
In solvent-free epoxy coatings, the amount of monofunctional active diluent is not more than 15% of epoxy resin, and the amount of multifunctional active diluent can reach 20%-25%. Too much active diluent, will reduce the film performance. For example, without the addition of reactive diluent and bisphenol A type epoxy coating containing 501 (BHR) and bisphenol A epoxy coating reactive diluent in sulfuric acid solution in 10% after 30 days of immersion, the coating weight is respectively 2.11% and 4.18%; after 30 days of immersion in methanol, the coating weight is 2.67% and 13.5% respectively.
Epoxy construction of reactive diluent generally toxic, must pay attention to in the process of use, long-term exposure will often cause skin allergies, even fester. How to choose the epoxy active diluent products should be based on the need, every kind of product has advantages and disadvantages of their own, usually diluted ability will be the primary factor, but also can choose according to the needs of different hot deformation temperature or alkali resistance or toughness were the main factors. Epoxy floor construction commonly used diluent type