Environment-friendly water-resistant antibacterial putty powder and preparation method thereof

A technology of putty powder and antibacterial powder, which is applied in the direction of filling slurry, etc., can solve the problems of not satisfying consumers and greatly affecting the wall surface, and achieve the effects of being beneficial to the health of the family, good plasticity, and relieving pressure

Inactive Publication Date: 2017-05-31
上海为然环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of the economy, people's health concept is also strengthening, people prefer to choose some environmentally friendly functional putty powder, on the other hand, the inner wall of the building is in close contact with the human body, and the quality of the wall has a great impact on human health , there are almost no putty powders with good water resistance and antibacterial properties on the market, which cannot meet the needs of consumers

Method used

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  • Environment-friendly water-resistant antibacterial putty powder and preparation method thereof
  • Environment-friendly water-resistant antibacterial putty powder and preparation method thereof
  • Environment-friendly water-resistant antibacterial putty powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] figure 1 It is a process flow chart of the preparation method of the antibacterial powder used in the environmental protection, water-resistant and antibacterial putty powder proposed by the present invention. The preparation method of the antibacterial powder comprises the following steps:

[0026] An antibacterial and antioxidant additive, the additive comprises hemicellulose, chitosan oligosaccharide, iron ion and montmorillonite polymerized, and its preparation method comprises the following steps:

[0027] S1. Preparation of chitosan oligosaccharide-iron complex: take chitosan oligosaccharide and dissolve it in 1.5% acetic acid solution (1.5%, v / v), add appropriate amount of FeSO under magnetic stirring conditions 4 ·7H 2 O powder, use 5g / L sodium acetate to adjust the pH to 6.0, keep stirring for 10-12h to balance, add a mixture of acetone:ethanol:isoamyl alcohol with a volume ratio of 25:24:1, and obtain a lumpy precipitate; vacuum pump The precipitate was sepa...

experiment example 1

[0039] The mensuration of experimental example 1 antibacterial and antioxidant additive reducing power

[0040] The antibacterial and antioxidant additives used in the present invention are compared with hemicellulose, chitosan and the commonly used antioxidant BTH to measure the reducing power of several substances and compare their antioxidant properties;

[0041] Take 1.0mL of the sample to be tested and place it in a test tube, add 2.0mL of deionized water and 2.0mL of 10% (w / v) K 3 Fe(CN) 6 The solution was mixed evenly, kept at 60°C for 30min, then placed in the refrigerator for rapid cooling at 4°C, added 1.0mL of 20% (w / v) trichloroacetic acid solution, mixed and centrifuged at 4000r / min for 15min. Take 3 mL of the supernatant and add distilled water and 1.0 mL of 0.2% (w / v) FeCl 3 , mix evenly, measure the absorbance at 700nm after standing for 10min, the greater the absorbance, the stronger the reducing ability of the sample to be tested, that is, the better the an...

experiment example 2

[0045] Experimental example 2 putty powder water absorption of the present invention is measured

[0046] Take a certain amount of sample and dry it in vacuum at 60°C, weigh every 1h until the quality of the sample does not change, take 0.2g sample and immerse it in 100ml deionized water or 0.75% sodium chloride solution at room temperature , when the adsorption reaches equilibrium, the sample is filtered from a 100-mesh sieve, and each treatment is repeated 3 times, and the test results are shown in Table 2; the water absorption is calculated by the following formula; where, Q-sample water absorption; Ws - dry weight of the sample; Wd - swollen weight of the sample.

[0047]

[0048] Table 2 Determination of water absorption of putty powder

[0049] Soak objects water absorption Deionized water 1657％ 0.75% sodium chloride solution 935％

[0050] The experimental data in Table 2 shows that the water absorption of the putty powder of the present ...

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Abstract

The invention relates to an environment-friendly water-resistant antibacterial putty powder which is mainly prepared from ash calcium, ground calcium carbonate, cellulose, pine and cypress ash, Kanuma soil, fumed silica, vermiculite powder, redispersible latex powder, gellan gum, lemon eucalyptus powder, starch octenyl succinate, freeze-thaw polyvinyl alcohol rubber powder, sodium abietate, micropowder silica gel, pigments and antibacterial powder. The putty powder has the advantages of excellent adsorption capacity, favorable plasticity, favorable binding property and favorable permeability, and is beneficial to bonding among the raw materials. After being dried, the putty powder has small shrinkage, can not crack, and can enhance the adhesive force of the putty for the building wall surface. By adding the pine and cypress, lemon eucalyptus and other plant fibers, the putty powder is green, environment-friendly and low-carbon; and the peculiar fragrance of the pine and cypress and the lemon eucalyptus can make people happy and relieve pressure. The added antibacterial powder can inhibit Gram-positive bacteria and Gram-negative bacteria from generation, can prevent fungus growth, can keep the wall surface clean, and is beneficial to good health of the family.

Description

technical field [0001] The invention relates to the technical field of new building materials, in particular to an environment-friendly, water-resistant and antibacterial putty powder and a preparation method thereof. Background technique [0002] Before painting the wall, the construction surface needs to be pretreated. Putty powder is a commonly used filling material. In order to obtain a smooth and uniform construction surface, the putty powder is required to have good water resistance. With the development of the economy, people's health concept is also strengthening, people prefer to choose some environmentally friendly functional putty powder, on the other hand, the inner wall of the building is in close contact with the human body, and the quality of the wall has a great impact on human health At present, there are almost no putty powders with good water resistance and antibacterial properties on the market, which cannot meet the needs of consumers. Therefore, water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/34
CPCC09D5/34
Inventor 不公告发明人
Owner 上海为然环保科技有限公司
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