The lignin is purified lignin, which mainly used for phenolic resin adhesive, can instead of some phenol, mixed quantity: 5% - 25%
Lignin content 85%--90%
Sugar content 1%--3%
applications when use Lignin in phenolic resins.
1, Reduce the production cost of phenolic resin
2, reduce the free formaldehyde and free phenol content of the phenolic resin
3, Phenolic resin curing temperature is high,Time is long, easy to glue penetration, when the phenol resin is in the synthesis process, add lignin in it,then resin curing temperature is reduced, curing speed, and not easy to glue penetration.
4, High purity lignin can be directly mixed with phenolic resin to make adhesive, Its performance is slightly inferior to the reaction product which lignin react with phenol and formaldehyde, but lignin mixed quantity should be more.