Method for preparing calcium alginate based cavernous body functional material

Abstract

The invention discloses a method for preparing a calcium alginate based cavernous body functional material. The method comprises the following steps of: uniformly mixing sodium alginate powder with a soluble calcium salt, magnesium salt or aluminum salt and an enhancer; sequentially forming into membranes and pieces by virtue of equipment; performing infiltration reaction and pore formation reaction to obtain the material, wherein the sodium alginate powder, the soluble calcium salt, magnesium salt or aluminum salt and the enhancer are 10-65 to 7-30 to 15-35 to 10-30 in percentage by weight. The method is simple in process control and has less equipment investment, and sewage discharge is basically avoided; the prepared functional material is a cavernous body having a nanometer structure, has the characteristics of high consistency of internal structure and external structure and composition, high imbibition air permeability, powerful mechanical strength, high flexibility and elasticity and the like, and can be used as medical auxiliaries, antibacterial materials, flame-resistant materials, absorption materials and sound-absorbent materials, vibration-absorptive materials and the like.

Description

technical field [0001] The invention relates to a preparation method of a sponge functional material, in particular to a preparation method of a calcium alginate-based sponge functional material. Background technique [0002] The 21st century is the century of the ocean, and the development and utilization of marine resources is a hot spot that countries are competing to develop. As a marine plant, kelp has an annual regeneration capacity of more than 15 million tons. my country's total seaweed production in 2012 was more than 1.2 million tons, of which kelp production exceeded 1 million tons, accounting for more than 90% of the world's total production. China 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 varies from 4,000 yuan to tens of thousands of yuan, and the added value is very l...

AI Technical Summary

Problems solved by technology

However, the mechanical properties of sodium alginate (such as: film, board) are brittle and weak after drying; there is no hole in the body, and the moisture absorption and moisturizing performance is poor.

After the formed sodium alginate is coagulated with calcium chloride solution, it still has the defects of brittle quality and poor moisture absorption and moisturizing performance, which greatly limits its own use

[0007] 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 the equipment is expensive, the sewage discharge is large, the ethanol consumption is huge, the process steps are many, the efficiency is low, the product is expensive, and the fiber itself solves the problem of mechanical strength, but because the fiber is non-porous, the moisture absorption and moisturizing properties Poor defects have not been overcome, and the use of medical accessories is still greatly restricted