Preparation method of light calcium-alginate-base sponge body functional material

Abstract

The invention discloses a preparation method of a light calcium-alginate-base sponge body functional material. The preparation method comprises the following steps: in room temperature, evenly mixing sodium alginate powder with soluble calcium salt, magnesium salt or aluminum salt, a reinforcing agent, peroxide and a catalyst to obtain a mixture; moistening with an alcohol-water solution to form paste; rolling by molding equipment to form a film material or a plate material; and then sequentially performing infiltration, complexation for pore formation, and expansion for pore formation. The preparation method has the characteristics of simple technology, low control difficulty, low equipment investment, energy-saving effect, low production cost and the like and is applicable to large-scaled industrial production; the prepared light calcium-alginate-base sponge body functional material is the same in structure and composition regardless of interior or exterior, good in quality, light in weight, high in mechanical strength, and excellent in imbibition performance and air permeability, and can be widely applicable to the fields of antibacterial materials, flame-resistant materials, adsorbing materials, acoustic materials, vibration-absorptive materials and the like; the market prospect is extensive.

Description

technical field [0001] The invention relates to a preparation method of a sponge functional material, in particular to a preparation method of a light calcium alginate-based sponge functional material. Background technique [0002] Seaweed is one of the largest renewable resources in the ocean. In terms of kelp alone, the annual regeneration capacity exceeds 15 million tons. my country's total seaweed production in 2012 was more than 1.2 million tons. Among them, the output of kelp exceeds 1 million tons, accounting for more than 90% of the world's total output. It is the country with the largest amount of kelp cultured in the world and has a huge resource advantage. [0003] But at present, the utilization of kelp is mainly used directly as food or to extract food additives, and the price per ton ranges from 4,000 yuan to tens of thousands of yuan, and the added value is low. How to use the advantages of kelp resources to transform into high value-added industrial advant...

AI Technical Summary

Problems solved by technology

It not only requires expensive equipment and consumes a lot of energy, but also has a small amount of treatment at one time, making it difficult to produce on an industrial scale

[0008] On the other hand, calcium alginate fibers are made through processes such as sodium alginate dissolution, defoaming, wet spinning, calcium chloride solution solidification, dehydration, and hot drawing, and are cut into short fibers and then made with non-woven equipment. Non-woven fabrics, not only expensive equipment, large sewage discharge, huge ethanol consumption, many process steps, low efficiency, and although the fiber itself solves the problem of mechanical strength, because the fiber is non-porous, it is not a light-weight material and absorbs moisture. The defect of poor performance has not been overcome, and it is difficult to meet the requirements in terms of liquid absorption rate for medical accessories, and the price is very expensive, so the application is still greatly restricted