Preparation method of antimicrobial moldproof MDI (methylenediphenyl diisocyanate) polyurethane foam

A polyurethane foam, antibacterial and antifungal technology, which is applied in the directions of chemicals and disinfectants for biological control, can solve the problems of not meeting the environmental protection requirements of customers, and achieves the effects of low cost, easy operation and simple preparation method.

Active Publication Date: 2012-09-19
FUJIAN YUETE NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing TDI polyurethane foam material can no longer meet the customer's requirements for environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] The technical scheme of the present invention is: a kind of preparation method of antibacterial mildew-proof MDI memory polyurethane foam, it comprises the following steps:

[0038] 1) Put 250-350 mesh muscovite powder in 30% hydrogen peroxide at 80°C for 60 minutes, then filter, wash and dry in sequence to obtain expanded muscovite powder;

[0039] 2) Add the expanded muscovite powder obtained in step 1 to the trisodium phosphate solution with a concentration of 0.25 mol / L at a weight ratio of 1: 1 to 3, stir and dissolve at 65 to 70°C for 4 to 6 hours, and then Filter, and wash the solid product with water until there is no PO in the washing liquid 4 3+ After drying for use;

[0040] 3) Add the solid product dried in step 2 to AgNO with a concentration of 0.05 mol / L at a weight ratio of 1:10 3 In the solution, stir and react for 4 hours at a temperature of 55-60°C and a pH value of 6-8. Mica powder and AgNO 3 The solution undergoes ion exchange and adsorption, ...

Embodiment 1

[0049] A kind of preparation method of antibacterial mildew-proof MDI memory polyurethane foam, it comprises the following steps:

[0050] 1) Put 250-mesh muscovite powder in 30% hydrogen peroxide at 80°C for 60 minutes, then filter, wash and dry in sequence to obtain expanded muscovite powder;

[0051] 2) Add 400g of the expanded muscovite powder obtained in step 1 to 400g of trisodium phosphate solution with a concentration of 0.25 mol / L, stir and dissolve at 65-70°C for 4 hours, then filter, and wash the solid product with water until it is washed. No PO in the liquid 4 3+ After drying for use;

[0052] 3) Add 403g of the solid product dried in step 2 to 4030g of AgNO with a concentration of 0.05 mol / L 3 In the solution, stir and react for 4 hours at a temperature of 55-60 ° C and a pH value of 8. Mica powder and AgNO 3 The solution undergoes ion exchange and adsorption, and then centrifuges to obtain a solid product. The solid product is washed repeatedly with disti...

Embodiment 2

[0061] A kind of preparation method of antibacterial mildew-proof MDI memory polyurethane foam, it comprises the following steps:

[0062] 1) Put 350-mesh muscovite powder in 30% hydrogen peroxide at 80°C for 60 minutes, then filter, wash and dry in sequence to obtain expanded muscovite powder;

[0063] 2) Add 400g of the expanded muscovite powder obtained in step 1 to 800g of trisodium phosphate solution with a concentration of 0.25 mol / L, stir and dissolve at 65-70°C for 6 hours, then filter, and wash the solid product with water until it is washed. No PO in the liquid 4 3+ After drying for use;

[0064] 3) Add 406g of the solid product dried in step 2 to 4060g of AgNO with a concentration of 0.05 mol / L 3 In the solution, stir and react for 4 hours at a temperature of 55-60 ° C and a pH value of 6. Mica powder and AgNO 3 The solution undergoes ion exchange and adsorption, and then centrifuges to obtain a solid product. The solid product is washed repeatedly with disti...

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PUM

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Abstract

The invention discloses a preparation method of antimicrobial moldproof MDI (methylenediphenyl diisocyanate) polyurethane foam, which comprises the following steps: 1) impregnating muscovite powder in oxydol, and treating to obtain expanded muscovite powder; 2) adding the expanded muscovite powder obtained in the step 1 into the trisodium phosphate solution, and treating to obtain a solid product; 3) adding the solid product obtained in the step 2) into an AgNO3 solution, stirring and carrying out after-treatment to obtain immobilized silver muscovite antimicrobial powder; 4) adding the product obtained in the step 3) into a diluter-coupling agent mixed solution, mixing and stirring to obtain a plastic antimicrobial agent; and 5) adding the plastic antimicrobial agent and a mold preventive into a butter PPG reaction kettle, dissolving by stirring, adding auxiliary materials and MDI, stirring at high speed, pouring into a reaction tank, and naturally aging to obtain the product. By using the immobilized silver muscovite powder and the 8-hydroxyquinoline copper mold preventive, the product prepared by the method has antimicrobial performance and moldproof effect.

Description

technical field [0001] The invention relates to a preparation method of polyurethane foam, in particular to a preparation method of antibacterial and mildew-proof MDI memory polyurethane foam. Background technique [0002] Since the 20th century, polyurethane foam has been greatly developed. In the 1940s, the German Bayer laboratory used diisocyanate and polyols as raw materials to prepare polyurethane samples such as rigid foam plastics. The United States has carried out research on rigid polyurethane foam since 1946, and the products are used in aircraft sandwich panel parts. In 1952, Bayer Company reported the results of the pilot test of polyester-type flexible polyurethane foam; from 1952 to 1954, it developed the technology of continuous production of polyester-type flexible polyurethane foam and developed corresponding production equipment; In 1961, polyisocyanate PAPI with low vapor pressure was used to prepare rigid polyurethane foam, which improved the performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/08C08G18/32C08K9/06C08K7/26C08K5/3437A01P1/00C08G101/00
Inventor 许明洪
Owner FUJIAN YUETE NEW MATERIAL TECH
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