Green activated soybean-meal protein and preparation method thereof

Abstract

The invention discloses a green activated soybean-meal protein and a preparation method thereof. The green activated soybean-meal protein comprises the following components: 25 parts by weight of low-temperature defatted soybean-meal protein powder, 5-10 parts by weight of ethanol, 65-70 parts by weight of dispersion medium water, 0.2-0.4 part by weight of nano calcium carbonate and 1-2 parts by weight of potassium chloride, and is obtained by carrying out dispersion, homogenizing emulsification by a high-pressure homogenizer, and spray drying. The green activated soybean-meal protein has theadvantages that: protein molecules are fully extended, active groups are obviously increased, the reaction activity is high, the active groups easily react with an epoxy cross-linking agent, the water-resistant bonding property and stability of a prepared adhesive are high, the water resistance requirement of the artificial board adhesive can be met, the adhesive cost is reduced, and the practicability of the protein adhesive is ensured.

Description

technical field [0001] The invention relates to a soybean meal protein, in particular to a green activated soybean meal protein and a preparation method thereof, which are used for the preparation of wood adhesives and belong to the field of soybean meal protein. Background technique [0002] my country is short of precious wood resources, but there are abundant artificial forest resources. The wood-based panels prepared by using artificial forest fast-growing wood and agricultural and forestry processing residues through adhesives are the main raw materials for furniture floors and interior decoration in the living environment. In 2015, The total output of wood-based panels in my country is 310 million cubic meters, accounting for about 50% of the world's total output. Based on the average production of 9 cubic meters of wood-based panels per ton of adhesive, the consumption of wood adhesives in my country in 2015 was about 40 million tons (solid content 50%), of which urea-...

AI Technical Summary

Problems solved by technology

The use of vegetable protein adhesives to prepare wood-based panels can solve the problem of free formaldehyde release from wood-based panels, but there is a problem of poor water resistance and bonding performance. Usually, a highly reactive cross-linking agent is added to form a network cross-linking structure to improve the adhesive. Water-resistant bonding performance, but due to the low protein reactivity, the protein raw material particles are uneven, the cross-linking structure is unevenly distributed, and a large number of weak interface layers are formed. Although the average strength meets the requirements, the bonding quality of different areas of wood-based panels varies greatly. Unstable bonding strength

Images