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Preparation method and application of modified waterborne polyurethane antibacterial coating

A water-based polyurethane and antibacterial coating technology, which is applied in polyurea/polyurethane coatings, coatings, antifouling/underwater coatings, etc., can solve the problems of reducing the volatilization degree of lemon eucalyptus essential oil, volatilization and instability of lemon eucalyptus essential oil

Active Publication Date: 2016-12-14
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, lemon eucalyptus essential oil is volatile and unstable when exposed to the air, so it is necessary to find effective ways to reduce the volatilization of lemon eucalyptus essential oil during use and prolong its storage period

Method used

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  • Preparation method and application of modified waterborne polyurethane antibacterial coating
  • Preparation method and application of modified waterborne polyurethane antibacterial coating
  • Preparation method and application of modified waterborne polyurethane antibacterial coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 lemon eucalyptus essential oil / g-C 3 N 4 Preparation and Properties of Composite Modified Waterborne Polyurethane Coating Film

[0025] 1 Experimental materials

[0026] Urea; AR; Sinopharm Chemical Reagent Co., Ltd.

[0027] Absolute ethanol; AR; Sinopharm Chemical Reagent Co., Ltd.

[0028] Essential oil of lemon eucalyptus; AR; French florihana essential oil.

[0029] Water-based polyurethane; Qingdao Jient Technology Co., Ltd., Shandong Province.

[0030] 2 Experimental methods

[0031] 1) g-C 3 N 4 Absorb lemon eucalyptus essential oil

[0032] ①Weigh 160 μL of 100% (V / V) essential oil of lemon eucalyptus, add 1440 μL of absolute ethanol to dissolve and make 10% (V / V) essential oil of lemon eucalyptus.

[0033] ② Weigh 5 parts of 0.125g-C 3 N 4 Into a 5mL centrifuge tube, according to the mass ratio of 1:1, 1:2, 1:3, 1:4, 1:5, add different volumes of 10% lemon eucalyptus essential oil respectively, and seal and stir at 40°C for 24h to make ...

Embodiment 2

[0064] The research on the anti-staphylococcus aureus biofilm effect on the iron sheet of the modified waterborne polyurethane coating film prepared by embodiment 2

[0065] 1 Experimental materials

[0066] ①Modified water-based polyurethane

[0067] ② Staphylococcus aureus

[0068] 2 Experimental methods

[0069] 1) Preparation of bacterial solution

[0070] Directly take the strains inoculated in the test tube of nutrient broth medium, after culturing Staphylococcus aureus for 48 hours, mix it with a shaker, and dilute it 10 times with 0.03mol / L phosphate buffer solution 10 times (about 1000 times) 5 cfu / mL).

[0071] 2) Preparation of lemon eucalyptus essential oil / g-C 3 N 4 Composite material modified waterborne polyurethane coating film

[0072] With reference to the above-mentioned embodiment 1, the lemon eucalyptus essential oil / g-C with different adsorption ratios prepared by using a 10mm×10mm metal iron sheet as the sample base plate 3 N 4 The composite mate...

Embodiment 3

[0085] The research on the anti-staphylococcus aureus biofilm effect on the glass sheet of the modified water-based polyurethane coating film prepared by embodiment 3

[0086] 1 Experimental materials

[0087] ①Modified water-based polyurethane

[0088] ② Staphylococcus aureus

[0089] 2 Experimental methods

[0090] 1) Preparation of bacterial solution

[0091] Directly take the strains inoculated in the test tube of nutrient broth medium, after culturing Staphylococcus aureus for 48 hours, mix it with a shaker, and dilute it 10 times with 0.03mol / L phosphate buffer solution 10 times (about 1000 times) 5 cfu / mL).

[0092] 2) Preparation of lemon eucalyptus essential oil / g-C 3 N 4 Composite material modified waterborne polyurethane coating film

[0093] With reference to the above-mentioned embodiment 1, the lemon eucalyptus essential oil / g-C of different adsorption ratios will be prepared with a 10mm × 10mm glass sheet as the sample bottom plate 3 N 4 The composite mat...

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Abstract

The invention belongs to the field of antibacterial preservatives and food preserving packaging materials or food processing mechanical coatings and particularly relates to preparation and application of Eucalyptus citriodora oil and g-C3N4 composite modified waterborne polyurethane antibacterial coating. By adsorbing Eucalyptus citriodora oil to g-C3N4 composite, volatilization of Eucalyptus citriodora oil in use is reduced, waste of Eucalyptus citriodora oil is reduced, utilization rate of the Eucalyptus citriodora oil is increased, and long-acting antibiosis and efficient utilization are achieved; the composite is then used to modify waterborne polyurethane antibacterial coating so that stability and antibacterial and mildew-proof properties of the coating are improved.

Description

technical field [0001] The invention belongs to the field of antibacterial preservatives and food fresh-keeping packaging materials or food processing machinery coatings, and specifically relates to lemon eucalyptus essential oil / g-C 3 N 4 Preparation and application of composite material modified waterborne polyurethane antibacterial coating agent. Background technique [0002] Lemon eucalyptus essential oil is a volatile oil, a light yellow transparent liquid with a refreshing citronellal smell. After citronellal is chemically modified, it produces citronellyl acetate, hydroxycitronellal, and thymol. Lemon eucalyptus essential oil (volatile oil) has a pleasant fragrance and is an important spice oil, which is widely used in the production of various spices, soaps, cosmetics and food. Pharmacological studies have shown that lemon eucalyptus essential oil has the functions of dispelling wind and relieving heat, dispelling dampness and detoxification, and killing insects, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/14
CPCC08K2201/011C09D5/14C09D175/04C08L91/00C08K3/28
Inventor 林琳袁璐崔海英
Owner JIANGSU UNIV
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