Tackifier Phenolic Resin
Tackifiers are chemical compounds used in formulating adhesives to increase tack, the stickiness of the surface of the adhesive. They are usually low-molecular weight compounds with high glass transition temperature.
Tackifier resins are added to rubber compounds to help bond different parts of an article together until they are cured, as well as to have tackiness between the layers of the rubber compound during the processing stage.
Tackifiers work at the surface of a rubber compound. When two pieces of rubber are brought together, an opportunity exists, to develop various types of chemical interaction, that will bond the two surfaces together.
The main difference between Phenolic Resin and other tackifying resins like Rosin-ester and hydrocarbon, is the type of bond strength on the surface of the Rubber Compounds.
The advantages of PHENOLIC tackifiers over the other general-purpose tackifiers are as follows:
- High initial Tack with Better Tack Retention.
- Better Heat and Humidity performance
- Lower loading levels to achieve the same degree of tackiness in the rubber compounds which in turn gives the compounds comparatively lesser HEAT BUILD-UP.
- Acts as a processing aid – its ability to wet on the different substrates helps during mixing & dispersion and is inert in the end product.
Its Limitation Phenolic resins undergo discoloration upon exposure to light.
Technical Data Sheet
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