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Preparation method of waterproof and antibacterial acrylic emulsion

An acrylic emulsion and emulsion technology, applied in the field of coatings, can solve the problems of environmental protection and safety of contact coatings, and achieve the effects of inhibiting the activity of grape aureus and typhoid bacillus, good skin affinity, and overcoming water resistance

Active Publication Date: 2019-07-02
SHENYANG SHUNFENG IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the coatings aimed at the above effects have added flavors, anti-fungal agents, fungicides, etc., which have not really achieved environmental protection and safety for contact coatings.

Method used

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  • Preparation method of waterproof and antibacterial acrylic emulsion
  • Preparation method of waterproof and antibacterial acrylic emulsion
  • Preparation method of waterproof and antibacterial acrylic emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of modified silk fibroin.

[0029] (a) Take 20g of silk and put it into a 500mL three-necked bottle filled with 200mL of 0.5% sodium carbonate solution, adjust the pH of the solution to 9 with 1% ammonia solution, raise the temperature to 40°C, and stir at 180r / min for 2 hours , centrifuged and washed three times at 4000r / min, and dried at 60°C to obtain silk fibroin A.

[0030] (b) Weigh 8g of silk fibroin and 200mL of 30% sodium carbonate solution and mix them into a 500mL three-neck flask. Stir for 30min at a temperature of 80°C and a speed of 150r / min. After the stirring is completed, suction filter. The filtrate was put into a dialysis bag and dialyzed with distilled water for 3 days to obtain a silk fibroin solution, and then dried at 60°C to obtain silk fibroin B.

[0031] (c) Put 60 mL of citronellol solution into a 150 mL three-neck flask, add 20 mL of serine solution, 5 mL of 98% concentrated sulfuric acid, and stir for 10 h at 80 °C and 250 r...

Embodiment 2

[0035] (1) Preparation of modified silk fibroin.

[0036] (a) Put 20g of silk into a three-necked bottle filled with 200mL of 0.5% sodium carbonate solution, adjust the pH of the solution to 9 with 1% ammonia solution, raise the temperature to 40°C, and stir at 180r / min for 2 hours. Centrifuge and wash 3 times at 4000r / min, and dry at 60°C to obtain silk fibroin A.

[0037] (b) Weigh 8g of silk fibroin A and 200 mL of 30% sodium carbonate solution, mix them into a three-neck flask, stir for 30min at a temperature of 80°C and a speed of 150r / min, after the stirring is completed, suction filter, and the filtrate Put it into a dialysis bag and dialyze with distilled water for 3 days to obtain a silk fibroin solution, and then dry it at 60°C to obtain silk fibroin B.

[0038] (c) Take 70 mL of citronellol solution into a three-necked flask, add 25 mL of serine solution, 5 mL of 98% concentrated sulfuric acid, and stir for 10 h at 80 °C and 250 r / min. Then at a speed of 5000r / min...

Embodiment 3

[0042] (1) Preparation of modified silk fibroin.

[0043] (a) Take 20g of silk and put it into a 500mL three-necked bottle filled with 200mL of 0.5% sodium carbonate solution, adjust the pH of the solution to 9 with 1% ammonia solution, raise the temperature to 40°C, and stir at 180r / min After 2 h, centrifuge and wash 3 times at 4000 r / min, and dry at 60°C to obtain silk fibroin A.

[0044] (b) Weigh 8g of silk fibroin A and 200 mL of 30% sodium carbonate solution, mix them into a three-neck flask, stir for 30min at a temperature of 80°C and a speed of 150r / min, after the stirring is completed, suction filter, and the filtrate Put it into a dialysis bag and dialyze with distilled water for 3 days to obtain a silk fibroin solution, and dry it at 60°C to obtain silk fibroin B.

[0045] (c) Put 80 mL of citronellol solution into a three-necked flask, add 25 mL of serine solution, 5 mL of 98% concentrated sulfuric acid, and stir for 10 h at 80 °C and 250 r / min. Then at a speed o...

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Abstract

The invention discloses a preparation method of a waterproof and antibacterial acrylic emulsion. Fibroin is reacted with citronellol by alanine to make the fibroin have a hydrophobic group, and finally an acrylic emulsion is grafted with the obtained fibroin to obtain the waterproof and antibacterial acrylic emulsion. The fibroin is reacted with citronellol to improve the hydrophobic ability of the fibroin, the acrylic emulsion is grafted with the obtained fibroin to make the fibroin combined with the acrylic emulsion matrix, and the hydrophobic property of the silk fibroin is used to overcomethe shortcoming of no resistance of the emulsion to water and improve the toughness and the tensile properties of the emulsion; and the emulsion prepared by the method can form a skin-friendly coating layer, has certain aroma and antibacterial ability, and can be applied to dressing tables, desks, cosmetic display cabinets and other furniture with high requirements.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a preparation method of a water-resistant and antibacterial acrylic emulsion. Background technique [0002] Coating is an indispensable material in the field of architectural decoration. People's choice of architectural decorative coatings is not only limited to the protection of the substrate, but also tends to be environmentally friendly, antibacterial, and good smell, especially for contact type. As far as high-end coatings are concerned, their environmental protection, safety, odor, touch feeling, antibacterial effect, etc. are all factors considered by consumers. In the coatings aimed at the above effects, most of them have added flavors, anti-fungal agents, bactericides, etc., which do not really achieve environmental protection and safety for contact coatings. [0003] The plant extract citronellol has the ability to inhibit the activity of V. aureus and typhoid bacill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D5/14C09D7/65C08H1/00
CPCC08H1/00C09D5/14C09D7/65C09D133/00C08L89/00
Inventor 刘春峰沙世强吕会勇王杨松王飞
Owner SHENYANG SHUNFENG IND GRP CO LTD
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