A B-stage resin is one in which a limited reaction between resin and hardener has been allowed to take place, and the reaction arrested while the product is still fusible and soluble, although having a higher softening point and a more limited solubility than originally. A B-stage resin contains sufficient hardener to effect curing on subsequent heating. The term “B-stage” is one of long standing in connection with phenol formaldehyde resins, where it has a similar, but not a corresponding meaning.
The first epoxy B-stage resin to attract attention was that formed by meta-phenylenediamine, but under controlled conditions it is possible to form B-stage products from a number of bisphenol A resins and hardeners. The most important B-stage resins are produced by using aromatic polyamine hardeners, the B-stage being created by heating the reactants together to bring about a homogeneous state and then cooling.
Popular Posts
-
Harderner is always use in many application. For example harderner use on painting and on coating chemicals, as like epoxy paint adhesive . ...
-
Double tape for mounting object on the wall or to stick steel on other steel, see here before you decide to choose the right double tape: 3M... -
Adhesive tape have created in many type and colors. Even the use of this tape are same but the color of tape may useful and adjusted with ... -
Melamine Formaldehyde Adhesive or Melamine Resin Adhesive A melamine formaldehyde adhesive (also commonly called a melamine glue or an MF)... -
A B-stage resin is one in which a limited reaction between resin and hardener has been allowed to take place, and the reaction arrested whil...
No comments:
Post a Comment