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Preparation method of polymer foam material with purifying function

A technology of polymer materials and manufacturing methods, applied in the field of functional polymer polymer materials, can solve the problems that photocatalytic materials cannot produce effects, photocatalytic materials cannot produce catalytic effects, etc.

Active Publication Date: 2018-07-06
NATURE ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the photocatalyst is directly added to the organic polymer material, due to the embedding effect of the polymer, the photocatalytic material cannot produce a catalytic effect.
In addition, photocatalytic materials cannot produce effects under the condition of no light use

Method used

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  • Preparation method of polymer foam material with purifying function
  • Preparation method of polymer foam material with purifying function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] First, dissolve 100 g of titanyl sulfate with 500 ml of deionized water to obtain a titanyl sulfate aqueous solution; titrate the titanyl sulfate solution with 36% ammonia water to a pH of 9 to obtain a precipitate, wash with deionized water 3 times, and obtain the original titanium acid. Dissolve 5g of orthotitanic acid in 30% aqueous hydrogen peroxide solution to obtain titanium peroxide aqueous solution (H 2 o 2 The molecular molar ratio with Ti is 4:1), and the pH of the titanium peroxide aqueous solution is adjusted to be about 3 to obtain an acidic titanium peroxide solution with a mass percent concentration of 2.5% acetic acid;

[0036] Take 20mL of the acidic titanium peroxide with the above-mentioned pH=3 and a Ti concentration of 0.11mol / L, slowly add a chitosan solution with a mass concentration of 20%, wherein the mass percentage of titanium peroxide and chitosan is 0.2:1, and stir Evenly, pour condensed water, control the water temperature not to exceed 5...

Embodiment 2

[0040] First dissolve 10g of titanium tetrachloride with 500ml of deionized water to obtain an aqueous solution of titanium chloride; titrate the titanium chloride solution to a pH of 9 with a mass concentration of 36% ammonia water to obtain a precipitate, wash 3 times with deionized water to obtain the original titanic acid. Dissolve 5g of orthotitanic acid in 30% aqueous hydrogen peroxide solution to obtain titanium peroxide aqueous solution (H 2 o 2 The molecular molar ratio to Ti is 6:1), and the pH of the titanium peroxide aqueous solution is adjusted to be about 4 to obtain an acidic titanium peroxide solution with a mass percent concentration of 5% citric acid;

[0041] Take 20mL of the acidic titanium peroxide with the above-mentioned pH=3 and a Ti concentration of 0.11mol / L, slowly add a chitosan solution with a mass concentration of 20%, wherein the mass percentage of titanium peroxide and chitosan is 2:1, and stir Evenly, pour condensed water, control the water t...

Embodiment 3

[0045] First dissolve 100g of titanium tetrafluoride with 500ml of deionized water to obtain an aqueous solution of titanium fluoride; titrate the titanyl sulfate solution to a pH of 9 with ammonia water with a mass concentration of 36% to obtain a precipitate, wash 3 times with deionized water to obtain the original titanic acid. Dissolve 5g of orthotitanic acid in 30% aqueous hydrogen peroxide solution to obtain titanium peroxide aqueous solution (H 2 o 2 The molecular molar ratio to Ti is 25:1), and the pH of the titanium peroxide aqueous solution is adjusted to be about 1 to obtain an acidic titanium peroxide solution with a mass percent concentration of 10% oxalic acid;

[0046] Take 20mL of the acidic titanium peroxide with the above-mentioned pH=3 and a Ti concentration of 0.11mol / L, and slowly add chitosan solids with a mass concentration of 20%, wherein the mass percentage of titanium peroxide and chitosan is 0.6:1, and stir Evenly, pour condensed water, control the...

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Abstract

The invention discloses a preparation method of a polymer material with a purifying function. The method comprises the following steps: (1) synthesizing an acidic titanium peroxide precursor; (2) preparing a water-soluble low-molecular-weight chitosan titanium oxide composite; and (3) preparing the polyurethane foam with the purifying function. According to the preparation method disclosed by theinvention, by adopting the chitosan - the exclusive natural alkaline polysaccharide, the polymer foam material prepared by the preparation method has a good antibacterial effect. After being degradedby acidic titanium peroxide, the low-molecular-weight chitosan is formed, so that the water solubility is good, and the antibacterial effect under a light-free dark field condition is provided; and secondly, the water-soluble titanium peroxide is used as a foam generation source in the forming process of the foam, the embedding effect of a polymer can be avoided, and the foam is automatically exposed, so that the foam with a good photocatalytic purification effect can be formed. By combining the chitosan and the water-soluble titanium peroxide, the polymer foam material which is antibacterialin a dark field and is automatically deodorized, purified and regenerated after the lighting can be formed.

Description

technical field [0001] The invention relates to the field of functional polymer polymer materials, in particular to a preparation method of polyurethane foam with purification function. Background technique [0002] Polyurethane foam has a wide range of applications and has penetrated into almost all sectors of the national economy, especially in furniture, bedding, transportation, refrigeration, construction, heat insulation and other sectors, and has become one of the indispensable materials. It has become one of the most widely used varieties in plastics. Polyurethane foam is used in furniture, beds and other household items, such as sofas and seats, back cushions, mattresses and pillows, etc. Due to sweating of users and high temperature and humidity in summer, it is easy to produce mites or fungi etc. It is often the cause of allergic diseases such as contact dermatitis or asthma. In addition, it is also easy to produce odor when used in places where human body conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L5/08C08K3/22C08G18/66C08G18/48C08G18/63C08G18/32C08G101/00
CPCC08G18/3275C08G18/3281C08G18/4072C08G18/48C08G18/632C08G18/6688C08G2101/00C08K3/22C08K2003/2237C08L5/08C08L75/08C08L2203/14
Inventor 冯泽云
Owner NATURE ENVIRONMENTAL PROTECTION TECH
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