Phenolic resin glue containing potassium ion alkali compound and preparation method thereof

Abstract

The invention relates to phenolic resin glue containing a potassium ion alkali compound and a preparation method thereof. The phenolic resin glue containing the potassium ion alkali compound comprises the following components in percentage by weight: 19-23.5wt% of phenol, 36.5-41.5% of industrial formaldehyde with weight concentration of 37%, 0.8-12wt% of potassium ion alkali compound, 0-12wt% of extender and the balance of solvent. The preparation method comprises the following processing steps: 1) taking the components; 2) preparing the potassium ion alkali compound into solution with the weight concentration of 30% or 50%; 3) starting a stirrer, placing phenol, potassium ion alkali compound, formaldehyde with the weight concentration of 37%, extender and solvent into a reaction vessel, performing reaction for 1-3 hours, cooling to the temperature below 40 DEG C, and discharging, so that the phenolic resin glue containing the potassium ion alkali compound is obtained, wherein solid content of the phenolic resin glue is 36.5-45wt%, and viscosity determined under the condition of coating four cups of the phenolic resin is 17-90 seconds. The phenolic resin glue containing the potassium ion alkali compound has the advantages that bonding strength is high, cost is low (phenol raw material amount is less), content of free phenol and free formaldehyde in the phenolic resin glue containing the potassium ion alkali compound is low, environmental performance is good, and the traditional phenolic resin glue can be replaced.

Description

technical field [0001] The invention relates to a phenolic resin glue containing a potassium ion basic compound and a preparation method thereof, belonging to the technical field of phenol-formaldehyde resin glue production. Background technique [0002] Phenolic resin glue is a wood adhesive with excellent properties. The boards made of it have high bonding strength, weather resistance, water resistance, and heat resistance. It is one of the important types of glue in the wood industry. However, it also has shortcomings. , high cost (phenol accounts for 30% of the weight of the glue), expensive, high free phenol content in the glue, not environmentally friendly, and harmful to the human body. In addition, due to the high price of phenol, the cost of phenolic resin glue has greatly increased, affecting its However, it is predicted that the production of phenolic resin glue for the wood industry will reach 1 million tons (that is, the amount of phenol used will reach 300,000 ...

AI Technical Summary

Problems solved by technology

[0002] Phenolic resin glue is a wood adhesive with excellent properties. The boards made of it have high bonding strength, weather resistance, water resistance, and heat resistance. It is one of the important types of glue in the wood industry. However, it also has shortcomings. , high cost (phenol accounts for 30% of the weight of the glue), expensive, high free phenol content in the glue, not environmentally friendly, and harmful to the human body. In addition, due to the high price of phenol, the cost of phenolic resin glue has greatly increased, affecting its However, it is predicted that the output of phenolic resin glue for the wood industry will reach 1 million tons (that is, the amount of phenol used will reach 300,000 tons) during the "Twelfth Five-Year Plan" period.

With the continuous exploitation of petroleum resources, petroleum resources are becoming increasingly tense, and the price of petroleum resources has risen rapidly, resulting in a continuous rise in the price of petroleum products, which greatly increases the cost of chemical products that use petroleum products as raw materials, and greatly affects sales. More than 10,000 yuan / ton at present. Due to the rise in the price of phenol, the price of phenolic resin glue with phenol as raw material has risen sharply, making it difficult for users to accept