Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of seaweed polysaccharide-based silver phosphate composite material

A technology of seaweed polysaccharide-based silver phosphate and composite materials, which is applied in the fields of botanical equipment and methods, chemicals for biological control, biocides, etc., can solve the problem of uneven distribution of silver ions, restrict the application of composite materials, and low distribution density and other problems, to achieve the effect of good elasticity, elimination of internal stress and good uniformity

Active Publication Date: 2022-05-24
QINGDAO UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the uneven distribution of silver ions on the carrier, low distribution density and poor stability also restrict the application and development of silver salts, especially the direct reaction of alginate with silver phosphate, which makes silver phosphate agglomerate and unevenly distributed on the seaweed polysaccharide macromolecules. Uniformity, which seriously restricts the application of composite materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of seaweed polysaccharide-based silver phosphate composite material
  • A kind of preparation method of seaweed polysaccharide-based silver phosphate composite material
  • A kind of preparation method of seaweed polysaccharide-based silver phosphate composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A preparation method of seaweed polysaccharide-based silver phosphate composite material, comprising the following steps:

[0041] (1) Weigh according to the mass ratio of sodium dihydrogen phosphate: sodium alginate: deionized water=1:3:80, dissolve sodium dihydrogen phosphate in deionized water, and adjust the pH to 1% with sodium hydroxide solution. 9-10, then heated to 45 ℃, slowly add sodium alginate under the action of ultrasonic, after the sodium alginate is completely dissolved, maintain for 30min, that is, solution A;

[0042] (2) Weigh the equimolar silver nitrate with phosphate, then weigh according to the mass ratio of silver nitrate: 25% ammonia water: deionized water=1:5:5, and dissolve the silver nitrate in deionized water at room temperature , and then drop 25% ammonia water into the silver nitrate solution under stirring, and then maintain stirring and react for 3min to obtain solution B;

[0043] (3) drop solution B into solution A under stirring, sto...

Embodiment 2

[0046] A preparation method of seaweed polysaccharide-based silver phosphate composite material, comprising the following steps:

[0047] (1) Weigh according to the mass ratio of sodium monohydrogen phosphate: sodium alginate: deionized water=1:3:85, dissolve sodium monohydrogen phosphate in deionized water, and adjust the pH to 1% with sodium hydroxide solution. 9-10, then heated to 45 ℃, slowly add sodium alginate under the action of ultrasonic, after the sodium alginate is completely dissolved, maintain for 45min, that is, solution A;

[0048] (2) Weigh the equimolar silver nitrate with phosphate, then weigh according to silver nitrate: 25% ammonia water: deionized water according to the mass ratio of 1:5.5:6, and dissolve silver nitrate in deionized water at room temperature , and then drop 25% ammonia water into the silver nitrate solution under stirring, and then maintain stirring and react for 4 min to obtain solution B;

[0049] (3) drop solution B into solution A und...

Embodiment 3

[0052] A preparation method of seaweed polysaccharide-based silver phosphate composite material, comprising the following steps:

[0053] (1) Weigh according to the mass ratio of sodium phosphate: sodium alginate: deionized water = 1:4:100, dissolve sodium phosphate in deionized water, adjust pH to 9-10 with 1% nitric acid solution, and then heat To 45 ℃, slowly add sodium alginate under the action of ultrasound, after the sodium alginate is completely dissolved, maintain for 60min, that is, solution A;

[0054] (2) Weigh the equimolar silver nitrate with phosphate, and then weigh according to the mass ratio of silver nitrate: 25% ammonia water: deionized water=1:6:7, and dissolve the silver nitrate in deionized water at room temperature , and then drop 25% ammonia water into the silver nitrate solution under stirring, and then maintain stirring and react for 5min to obtain solution B;

[0055] (3) drop solution B into solution A under stirring, stop stirring when the reactio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
oxygen indexaaaaaaaaaa
Login to View More

Abstract

The invention relates to the technical field of composite materials, in particular to a method for preparing a seaweed polysaccharide-based silver phosphate composite material. Using nitrate and sodium alginate as raw materials, an in-situ method is used to generate a sodium alginate / silver phosphate fluid, which is then molded, The seaweed polysaccharide-based silver phosphate composite material is obtained by cross-linking, cleaning, and steam drying. The seaweed polysaccharide-based silver phosphate composite material made by the method of the present invention not only makes up for the non-antibacterial defect of the seaweed polysaccharide material, but also greatly improves the performance of the composite material. Excellent fire resistance and antibacterial performance, especially suitable for decorative materials with high requirements for fire resistance and antibacterial.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a preparation method of a seaweed polysaccharide-based silver phosphate composite material. Background technique [0002] my country's annual output of seaweed is about 7.9 million tons, kelp 4.14 million tons, and wakame 1.69 million tons, accounting for more than 80% of the world's total output, with huge resource advantages. At present, the utilization of seaweed is mainly used directly as food, and the added value is very low. How to transform this resource advantage into high value-added industrial advantage is one of the important goals in my country's blue economy. [0003] Alginic acid and its salts are non-toxic and biodegradable marine polysaccharide polymers. Sodium alginate has good biocompatibility, biodegradability, no toxic and side effects, as well as excellent hygroscopic properties, gel properties and biological activity, and is widely used in chem...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L5/04C08K3/32C08J7/12C08J5/18A01N59/26A01N43/16A01P3/00A01P1/00
CPCC08K3/32C08J7/12C08J5/18A01N59/26A01N43/16C08L2201/02C08K2003/328C08J2305/04C08L5/04
Inventor 李群董瑞涛李子超张青黄绮颖
Owner QINGDAO UNIV