The present application relates to phenolic resin preparation technical field, specifically to a kind of phenolic resin for heavy
bamboo floor and its preparation method, device, preparation method is as follows: first,
phenol is extracted to the inside of reaction kettle;Stirring is opened, then cooling water is cooled to reaction kettle, then slowly add composite
alkaline catalyst;Then,
formaldehyde is constantly added to the inside of reaction kettle;Steam valve is opened, steam is heated, while condensate is passed, and temperature is kept for 30~50min;Immediately after
viscosity reaches the requirement, cooling water is added to reduce temperature, until temperature is reduced to 40~45 DEG C after it can be discharged;Preparation device includes first feeding structure, mixed production structure, second feeding structure, steam conduit, guide
pipe, connecting conduit and pressure
relief valve;Phenolic resin prepared by the present application has excellent high-
temperature resistance, high
bonding strength, can
resist decomposition of chemical substances, after
coating heavy
bamboo floor, not only can improve its strength and
water resistance, but also can greatly reduce harmful gas emission of heavy
bamboo floor, and effectively improve the color of heavy bamboo floor.