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Slow-release mildew-proofing casein-based hollow microsphere coating material and preparation method thereof

A coating material, casein-based technology, applied in coating, leather surface treatment, animal husbandry, etc., can solve the problem that casein is prone to mildew, etc., and achieve the effect of improving mildew, increasing added value, and good hygienic performance

Inactive Publication Date: 2016-09-21
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the previous research, the inventor obtained polyacrylate modified casein hollow microsphere emulsion which can be used for leather finishing by emulsion polymerization. Covering effect is good, but casein is easy to mold

Method used

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  • Slow-release mildew-proofing casein-based hollow microsphere coating material and preparation method thereof
  • Slow-release mildew-proofing casein-based hollow microsphere coating material and preparation method thereof
  • Slow-release mildew-proofing casein-based hollow microsphere coating material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0028] Step 1): Preparation of Caprolactam / SiO 2 Co-modified casein emulsion. Caprolactam / SiO 2 The mass of the co-modified casein emulsion is 100 parts, according to the mass parts, add 2.6 parts of casein, 1.4 parts of triethanolamine and 57.9 parts of deionized water in a 100mL three-necked flask equipped with a stirrer and a condensing device, and heat up to 50°C After the casein is fully dissolved, the temperature is raised to 65°C, and 34.1 parts of caprolactam aqueous solution and 0.5 parts of coupling agent are added dropwise to the system, and then 3.5 parts of silicon dioxide precursor are added dropwise, and the reaction is continued for 1 hour. After the reaction is stopped, Cool to room temperature and discharge to obtain caprolactam / SiO 2 Co-modified casein emulsion compound emulsion;

[0029] Step 2): Preparation of slow-release anti-mold type casein-based hollow microspheres. Taking the mass of the slow-release anti-mold casein-based hollow microsphere emul...

Embodiment example 2

[0031] Step 1): Preparation of Caprolactam / SiO 2 Co-modified casein emulsion. Caprolactam / SiO 2 The mass of the co-modified casein emulsion is 100 parts. According to the mass parts, add 5.6 parts of casein, 3.4 parts of triethanolamine and 50.9 parts of deionized water in a 100 mL three-necked flask equipped with a stirrer and a condenser, and heat up to 55 ° C After the casein is fully dissolved, the temperature is raised to 70°C, and 36.1 parts of caprolactam aqueous solution and 1.0 part of coupling agent are added dropwise to the system, and then 3.0 parts of silicon dioxide precursor are added dropwise, and the reaction is continued for 1.5 hours. After the reaction is stopped, , cooled to room temperature and discharged to obtain caprolactam / SiO 2 Co-modified casein emulsion compound emulsion;

[0032] Step 2): Preparation of slow-release anti-mold type casein-based hollow microspheres. Taking the mass of the slow-release anti-mold casein-based hollow microsphere em...

Embodiment example 3

[0034] Step 1): Preparation of Caprolactam / SiO 2 Co-modified casein emulsion. Caprolactam / SiO 2 The mass of the co-modified casein emulsion is 100 parts, according to the mass parts, add 8.6 parts of casein, 5.4 parts of triethanolamine and 43.9 parts of deionized water in a 100mL three-necked flask equipped with a stirrer and a condensing device, and heat up to 60°C After the casein is fully dissolved, the temperature is raised to 75°C, and 38.1 parts of caprolactam aqueous solution and 1.5 parts of coupling agent are added dropwise to the system, and then 2.5 parts of silicon dioxide precursor are added dropwise, and the reaction is continued for 2.0 hours. After the reaction is stopped, , cooled to room temperature and discharged to obtain caprolactam / SiO 2 Co-modified casein emulsion compound emulsion;

[0035] Step 2): Preparation of slow-release anti-mold type casein-based hollow microspheres. Taking the mass of the slow-release anti-mold casein-based hollow microsph...

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Abstract

The invention discloses a slow-release mildew-proofing casein-based hollow microsphere coating material and a preparation method thereof. In the invention, the casein is employed as a base material, monomers, such as methyl methacrylate, butyl acrylate, methacrylic acid and the like, are introduced to the system, and a casein-based polymer emulsion having a special hollow structure is prepared through a seed emulsion polymerization method and an alkali swelling method, and meanwhile, by means of the special structure of the hollow microspheres, the interior of the hollow microspheres is coated with a mildew-proofing agent, so that a slow-release mildew-proofing effect on leather can be achieved by changing external release conditions. The material, when being applied in a leather finishing agent, has important significance on improvement of quality and grade of aniline leather and full grain leather products.

Description

technical field [0001] The invention relates to a preparation method of an anti-mildew coating material, in particular to a slow-release anti-mold type casein-based hollow microsphere coating material and a preparation method thereof. Background technique [0002] Leather is a processed product of leather collagen protein, and it is a good source of nutrition for mold growth. Therefore, during processing, storage, and use of leather, bacteria and mold are easy to grow and reproduce, resulting in mildew spots on leather products, which not only affect the appearance of leather, but also affect the appearance of leather. Significantly reduce the physical and mechanical properties of leather, seriously affecting the sales and performance of leather. With the increasing use of leather products and the increase in my country's leather exports year by year, the problem of eliminating mildew in leather has become more prominent. In order to prevent mildew on leather and products, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F289/00C08F220/18C08F220/14C08F220/06C08H1/00C09D151/00C14C11/00
CPCC08F289/00C08H1/00C09D151/00C14C11/003C08F220/18C08F220/1802C08F220/1804C08F220/00C08F220/06C08F220/14
Inventor 马建中张帆徐群娜杨腾飞
Owner SHAANXI UNIV OF SCI & TECH