CN109722187B - Water-based adhesive for automobile covering curtain and production process thereof - Google Patents
Water-based adhesive for automobile covering curtain and production process thereof Download PDFInfo
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Abstract
The invention discloses an aqueous adhesive for an automobile covering curtain and a production process thereof, wherein the production process comprises the following steps: s1, weighing the following raw materials: silicone-acrylate emulsion, nano silicon dioxide, anionic surfactant, nonionic surfactant, gamma-cyclodextrin, propylene glycol phenyl ether, polyvinyl alcohol, potassium citrate, an organic silicon defoamer, an antibacterial additive, ethanol and water; s2, uniformly mixing the raw materials to obtain the aqueous adhesive for the automobile covering curtain. The aqueous adhesive for the automobile covering curtain and the production process thereof utilize the characteristics of good chemical stability, excellent mechanical stability, low minimum film forming temperature, excellent bonding performance and the like of the silicone-acrylic emulsion, and the raw materials have good dispersibility in the system.
Description
Technical Field
The invention relates to an aqueous adhesive, in particular to an aqueous adhesive for an automobile covering curtain and a production process thereof.
Background
With the development of society, automobiles gradually get close to the lives of people and become tools for people to ride instead of walk. The trunk of a vehicle is generally communicated with the passenger compartment space, and in order to prevent the articles in the trunk from dumping into the passenger compartment during driving, a shielding curtain is usually installed between the trunk and the passenger compartment.
The general object covering curtain comprises a fiber board, wherein an upper cloth curtain and a lower cloth curtain are respectively attached to the upper surface and the lower surface of the fiber board in a pressing mode, and the fiber board, the upper cloth curtain and the lower cloth curtain are bonded through adhesives. The upper cloth curtain and the lower cloth curtain are made of PVC plates or non-woven fabrics.
The adhesive is a technology for connecting the surfaces of homogeneous or heterogeneous objects together by using the adhesive, and has the characteristics of continuous stress distribution, light weight, low process temperature and the like. The adhesive mainly comprises a bonding substance, a curing agent, a toughening agent, a diluent, a filler and a modifier. The adhesive is particularly suitable for connection of different materials, different thicknesses, ultrathin specifications and complex components. The adhesive has the fastest recent development and extremely wide application industry, and is widely applied to the automobile industry, the shipbuilding industry, the aerospace industry, the electronic and electrical industry, the building industry, the medical industry, the light textile industry and the packaging industry. The adhesives are classified into thermosetting type, hot melt type, room temperature curing type, pressure sensitive type and the like according to application methods; according to the application object, the glue is divided into structural type, non-structural type or special glue; the bonding form can be divided into water-soluble type, water-emulsion type, solvent type, and various solid type.
The water-based adhesive has the characteristics of no solvent, safety, environmental protection and the like, and is gradually substituted for solvent-based adhesives. Most of the currently used waterborne adhesives in China are acrylic chloroprene composite adhesives which have good initial adhesion and heat resistance, but due to the difference of ionic systems of the two systems, the product has poor stability and is very easy to demulsify; the dicloromethyl adhesive has a high initial adhesion but is inferior in heat resistance and water resistance.
The existing object covering curtain usually adopts traditional glue as a binder to be smeared on the upper and lower surfaces of a paperboard or a fiberboard, and then a cloth curtain is placed on the paperboard or the fiberboard to be pressed at high temperature, but the traditional glue is not environment-friendly and antibacterial, has high production cost, has insufficient initial adhesion, has the problems of low curing speed and the like, and can not well meet the use requirements.
Disclosure of Invention
The invention mainly solves the technical problem of providing the aqueous adhesive for the automobile object shading curtain and the production process thereof.
In order to solve the technical problems, the invention adopts the technical scheme that:
a production process of an aqueous adhesive for an automobile object covering curtain comprises the following steps:
s1, weighing the following raw materials: silicone-acrylate emulsion, nano silicon dioxide, anionic surfactant, nonionic surfactant, gamma-cyclodextrin, propylene glycol phenyl ether, polyvinyl alcohol, potassium citrate, an organic silicon defoamer, an antibacterial additive, ethanol and water;
s2, uniformly mixing the raw materials to obtain the aqueous adhesive for the automobile covering curtain.
In a preferred embodiment, the production process of the aqueous adhesive for the automobile covering curtain comprises the following steps:
s1, weighing the following raw materials in parts by weight: 50-70 parts of silicone-acrylic emulsion, 5-15 parts of nano silicon dioxide, 0.1-0.5 part of anionic surfactant, 0.1-0.5 part of nonionic surfactant, 4-10 parts of gamma-cyclodextrin, 0.5-1.5 parts of propylene glycol phenyl ether, 1-5 parts of polyvinyl alcohol, 3-9 parts of potassium citrate, 0.1-0.3 part of organic silicon defoamer, 1-3 parts of antibacterial additive, 5-15 parts of ethanol and 10-30 parts of water;
s2, adding silicone-acrylate emulsion, propylene glycol phenyl ether, an organic silicon defoaming agent and polyvinyl alcohol into ethanol, and uniformly mixing to obtain a component A; adding nano silicon dioxide, an anionic surfactant, a nonionic surfactant, gamma-cyclodextrin, potassium citrate and an antibacterial additive into water, and uniformly mixing to obtain a component B; and adding the component A into the component B and uniformly mixing to obtain the composition.
In a more preferred embodiment, the production process of the aqueous adhesive for the automobile covering curtain comprises the following steps:
s1, weighing the following raw materials in parts by weight: 50-70 parts of silicone-acrylic emulsion, 5-15 parts of nano silicon dioxide, 0.1-0.5 part of anionic surfactant, 0.1-0.5 part of nonionic surfactant, 4-10 parts of modified gamma-cyclodextrin, 0.5-1.5 parts of propylene glycol phenyl ether, 1-5 parts of polyvinyl alcohol, 3-9 parts of potassium citrate, 0.1-0.3 part of organic silicon defoamer, 1-3 parts of antibacterial additive, 5-15 parts of ethanol and 10-30 parts of water;
s2, adding the silicone-acrylic emulsion, the propylene glycol phenyl ether, the organic silicon defoamer and the polyvinyl alcohol into ethanol, stirring at the rotation speed of 200-500r/min for 10-20min, and uniformly mixing to obtain a component A; adding nano silicon dioxide, an anionic surfactant, a nonionic surfactant, modified gamma-cyclodextrin, potassium citrate and an antibacterial additive into water, stirring at the rotation speed of 200-500r/min for 10-20min, and uniformly mixing to obtain a component B; adding the component A into the component B, stirring at the rotation speed of 200-500r/min for 30-60min, and uniformly mixing to obtain the final product.
The anionic surfactant is dioctyl sodium sulfosuccinate.
The nonionic surfactant is octyl phenol polyoxyethylene ether or nonyl phenol polyoxyethylene ether.
The preparation method of the modified gamma-cyclodextrin comprises the following steps: stirring 200-250g gamma-cyclodextrin, 15-25g maleic anhydride and 1200-1800g N N-dimethylformamide at 75-85 ℃ and at the rotating speed of 500-1000r/min for 10-20h, cooling to room temperature, and standing for 5-10h to obtain a reaction solution; precipitating the reaction solution in chloroform, and drying the precipitate at 65-75 ℃ for 25-35h to obtain pretreated gamma-cyclodextrin; the preparation method comprises the following steps of (1) mixing pretreated gamma-cyclodextrin, polyvinylpyrrolidone, nano titanium dioxide and water in a mass ratio of 1: (0.02-0.06): (0.01-0.05): (10-30) stirring and mixing for 20-50min at the rotating speed of 300-700r/min, adding sodium persulfate accounting for 0.05-0.2% of the weight of the gamma-cyclodextrin, heating to 60-90 ℃, stirring for 2-5h at the rotating speed of 500-1000r/min, and obtaining mixed solution; and (4) spray drying the mixed solution to obtain the product.
The inlet temperature of the spray drying is 170-190 ℃, the outlet temperature is 70-85 ℃, and the wind speed of the hot wind is 3-5m3The material feeding speed is 30-60mL/min, and the rotating speed of the atomizer is 200-400 r/min.
The antibacterial auxiliary agent is at least one of 1-chloro-3, 5-diglycidyl-S-triazinetrione and 1-chloro-3-hydroxymethyl-5- (2, 3-dihydroxypropyl) -S-triazinetrione. Further, the antibacterial auxiliary agent is 1-chloro-3, 5-diglycidyl-S-triazinetrione, 1-chloro-3-hydroxymethyl-5- (2, 3-dihydroxypropyl) -S-triazinetrione in a mass ratio of 1: (0.4-0.6).
The particle size of the nano silicon dioxide is 1-100 nm.
The invention provides an aqueous adhesive for an automobile covering curtain, which is prepared by the production process.
The invention has the beneficial effects that:
the aqueous adhesive for the automobile covering curtain and the production process thereof utilize the characteristics of good chemical stability, excellent mechanical stability, low minimum film forming temperature, excellent bonding performance and the like of the silicone-acrylic emulsion, and the raw materials have good dispersibility in the system.
Detailed Description
The features and advantages of the present invention will become more apparent and appreciated from the following detailed description of the invention.
The materials used are described below: the nano-silica is provided by Jiangsu Tianxing new material company Limited and has the model number of TSP-H10, and the primary particle size is 20 nm. The gamma-cyclodextrin is food-grade gamma-cyclodextrin provided by Wuxi flourishing age macro-science and technology limited company. Propylene glycol phenyl ether, CAS No.: 6180-61-6. The polyvinyl alcohol is the polyvinyl alcohol with the model number of 2488 provided by the Wuchu Pengyu chemical company Limited. Potassium citrate, CAS No.: 7778-49-6. The organic silicon defoaming agent is a polyether organic silicon defoaming agent with the model number of CX-470, which is provided by Guangzhou New Material science and technology Limited. Ethanol, CAS No.: 64-17-5. The sodium dioctyl sulfosuccinate is provided by Haian petrochemical plant of Jiangsu province, and the model is OT. The polyoxyethylene nonyl phenyl ether is polyoxyethylene nonyl phenyl ether with model number TX-10 provided by Shandong Haoyao new material company Limited. 1-chloro-3-hydroxymethyl-5- (2, 3-dihydroxypropyl) -S-triazinetrione was prepared according to the method shown in example 3 of Chinese patent application No. 201310016639.4. Maleic anhydride, CAS No.: 108-31-6. N, N-dimethylformamide, CAS No.: 68-12-2. Chloroform, CAS No.: 67-66-3. The polyvinylpyrrolidone is polyvinyl pyrrolidone provided by Shandong Gefeng new material company Limited with model number PVPK 30. 1-chloro-3, 5-diglycidyl-S-triazinetrione was prepared according to the method shown in example 2 of Chinese patent application No. 201210362485. X. The nanometer titanium dioxide is the nanometer titanium dioxide with the model number of TTP-A10 provided by Jiangsu Tianxing new material company Limited, and the primary particle size is 10 nm. Sodium persulfate, CAS number: 7775-27-1. The silicone-acrylate emulsion was prepared according to the method described in the specific embodiment of chinese patent application No. 200810045627.3.
Example 1
The production process of the aqueous adhesive for the automobile object covering curtain comprises the following steps:
s1, weighing the following raw materials in parts by weight: 60 parts of silicone-acrylic emulsion, 8 parts of nano silicon dioxide, 0.25 part of dioctyl sodium sulfosuccinate, 0.25 part of nonylphenol polyoxyethylene ether, 7 parts of modified gamma-cyclodextrin, 1 part of propylene glycol phenyl ether, 3 parts of polyvinyl alcohol, 6 parts of potassium citrate, 0.15 part of an organic silicon defoamer, 1.5 parts of an antibacterial additive, 10 parts of ethanol and 20 parts of water;
s2, adding the silicone-acrylic emulsion, the propylene glycol phenyl ether, the organic silicon defoamer and the polyvinyl alcohol into ethanol, stirring at the rotating speed of 300r/min for 15min, and uniformly mixing to obtain a component A; adding nano silicon dioxide, an anionic surfactant, a nonionic surfactant, modified gamma-cyclodextrin, potassium citrate and an antibacterial additive into water, stirring at the rotating speed of 300r/min for 15min, and uniformly mixing to obtain a component B; and adding the component A into the component B, stirring at the rotating speed of 300r/min for 40min, and uniformly mixing to obtain the aqueous adhesive for the automobile covering curtain.
The preparation method of the modified gamma-cyclodextrin comprises the following steps: stirring 230g of gamma-cyclodextrin, 20g of maleic anhydride and 1500g N, N-dimethylformamide at 80 ℃ for 12h at the rotating speed of 600r/min, cooling to room temperature, and standing for 8h to obtain a reaction solution; precipitating the reaction solution in chloroform, and drying the precipitate at 70 ℃ for 30h to obtain pretreated gamma-cyclodextrin; the preparation method comprises the following steps of (1) mixing pretreated gamma-cyclodextrin, polyvinylpyrrolidone, nano titanium dioxide and water in a mass ratio of 1: 0.04: 0.03: 20 stirring and mixing for 30min at the rotating speed of 500r/min, adding sodium persulfate accounting for 0.1 percent of the weight of the gamma-cyclodextrin, heating to 70 ℃, stirring for 3.5h at the rotating speed of 600r/min, and obtaining mixed liquor; spray drying the mixed solution at inlet temperature of 180 deg.C, outlet temperature of 75 deg.C, and hot air speed of 4m3Min, the feeding speed is 50mL/min, and the rotating speed of the atomizer is 300 r/min; thus obtaining the modified gamma-cyclodextrin.
The antibacterial auxiliary agent is 1-chloro-3, 5-diglycidyl-S-triazinetrione.
Example 2
The production process of the aqueous adhesive for the automobile object covering curtain comprises the following steps:
s1, weighing the following raw materials in parts by weight: 60 parts of silicone-acrylic emulsion, 8 parts of nano silicon dioxide, 0.25 part of dioctyl sodium sulfosuccinate, 0.25 part of nonylphenol polyoxyethylene ether, 7 parts of gamma-cyclodextrin, 1 part of propylene glycol phenyl ether, 3 parts of polyvinyl alcohol, 6 parts of potassium citrate, 0.15 part of an organic silicon defoamer, 1.5 parts of an antibacterial additive, 10 parts of ethanol and 20 parts of water;
s2, adding the silicone-acrylic emulsion, the propylene glycol phenyl ether, the organic silicon defoamer and the polyvinyl alcohol into ethanol, stirring at the rotating speed of 300r/min for 15min, and uniformly mixing to obtain a component A; adding nano silicon dioxide, an anionic surfactant, a nonionic surfactant, modified gamma-cyclodextrin, potassium citrate and an antibacterial additive into water, stirring at the rotating speed of 300r/min for 15min, and uniformly mixing to obtain a component B; and adding the component A into the component B, stirring at the rotating speed of 300r/min for 40min, and uniformly mixing to obtain the aqueous adhesive for the automobile covering curtain.
The antibacterial auxiliary agent is 1-chloro-3, 5-diglycidyl-S-triazinetrione.
Example 3
The production process of the aqueous adhesive for the automobile object covering curtain comprises the following steps:
s1, weighing the following raw materials in parts by weight: 60 parts of silicone-acrylic emulsion, 8 parts of nano silicon dioxide, 0.25 part of dioctyl sodium sulfosuccinate, 0.25 part of nonylphenol polyoxyethylene ether, 7 parts of modified gamma-cyclodextrin, 1 part of propylene glycol phenyl ether, 3 parts of polyvinyl alcohol, 6 parts of potassium citrate, 0.15 part of an organic silicon defoamer, 1.5 parts of an antibacterial additive, 10 parts of ethanol and 20 parts of water;
s2, adding the silicone-acrylic emulsion, the propylene glycol phenyl ether, the organic silicon defoamer and the polyvinyl alcohol into ethanol, stirring at the rotating speed of 300r/min for 15min, and uniformly mixing to obtain a component A; adding nano silicon dioxide, an anionic surfactant, a nonionic surfactant, modified gamma-cyclodextrin, potassium citrate and an antibacterial additive into water, stirring at the rotating speed of 300r/min for 15min, and uniformly mixing to obtain a component B; and adding the component A into the component B, stirring at the rotating speed of 300r/min for 40min, and uniformly mixing to obtain the aqueous adhesive for the automobile covering curtain.
The preparation method of the modified gamma-cyclodextrin comprises the following steps: stirring 230g of gamma-cyclodextrin, 20g of maleic anhydride and 1500g N, N-dimethylformamide at 80 ℃ for 12h at the rotating speed of 600r/min, cooling to room temperature, and standing for 8h to obtain a reaction solution; precipitating the reaction solution in chloroform, and drying the precipitate at 70 ℃ for 30h to obtain pretreated gamma-cyclodextrin; the pretreatment gamma-cyclodextrin, the nano titanium dioxide and the water are mixed according to the mass ratio of 1: 0.03: 20 stirring and mixing for 30min at the rotating speed of 500r/min, adding sodium persulfate accounting for 0.1 percent of the weight of the gamma-cyclodextrin, heating to 70 ℃ at the rotating speedStirring for 3.5h at the speed of 600r/min to obtain a mixed solution; spray drying the mixed solution at inlet temperature of 180 deg.C, outlet temperature of 75 deg.C, and hot air speed of 4m3Min, the feeding speed is 50mL/min, and the rotating speed of the atomizer is 300 r/min; thus obtaining the modified gamma-cyclodextrin.
The antibacterial auxiliary agent is 1-chloro-3, 5-diglycidyl-S-triazinetrione.
Example 4
The production process of the aqueous adhesive for the automobile object covering curtain comprises the following steps:
s1, weighing the following raw materials in parts by weight: 60 parts of silicone-acrylic emulsion, 8 parts of nano silicon dioxide, 0.25 part of dioctyl sodium sulfosuccinate, 0.25 part of nonylphenol polyoxyethylene ether, 7 parts of modified gamma-cyclodextrin, 1 part of propylene glycol phenyl ether, 3 parts of polyvinyl alcohol, 6 parts of potassium citrate, 0.15 part of an organic silicon defoamer, 1.5 parts of an antibacterial additive, 10 parts of ethanol and 20 parts of water;
s2, adding the silicone-acrylic emulsion, the propylene glycol phenyl ether, the organic silicon defoamer and the polyvinyl alcohol into ethanol, stirring at the rotating speed of 300r/min for 15min, and uniformly mixing to obtain a component A; adding nano silicon dioxide, an anionic surfactant, a nonionic surfactant, modified gamma-cyclodextrin, potassium citrate and an antibacterial additive into water, stirring at the rotating speed of 300r/min for 15min, and uniformly mixing to obtain a component B; and adding the component A into the component B, stirring at the rotating speed of 300r/min for 40min, and uniformly mixing to obtain the aqueous adhesive for the automobile covering curtain.
The preparation method of the modified gamma-cyclodextrin comprises the following steps: stirring 230g of gamma-cyclodextrin, 20g of maleic anhydride and 1500g N, N-dimethylformamide at 80 ℃ for 12h at the rotating speed of 600r/min, cooling to room temperature, and standing for 8h to obtain a reaction solution; precipitating the reaction solution in chloroform, and drying the precipitate at 70 ℃ for 30h to obtain pretreated gamma-cyclodextrin; the preparation method comprises the following steps of (1) mixing pretreated gamma-cyclodextrin, polyvinylpyrrolidone, nano titanium dioxide and water in a mass ratio of 1: 0.04: 0.03: 20 stirring and mixing for 30min at the rotating speed of 500r/min, adding sodium persulfate accounting for 0.1 percent of the weight of the gamma-cyclodextrin, heating to 70 ℃, stirring for 3.5h at the rotating speed of 600r/min, and obtaining mixed liquor; spray drying the mixed solution at the inlet temperature of 180 ℃ and the outlet temperature ofThe mouth temperature is 75 ℃, and the wind speed of the hot wind is 4m3Min, the feeding speed is 50mL/min, and the rotating speed of the atomizer is 300 r/min; thus obtaining the modified gamma-cyclodextrin.
The antibacterial auxiliary agent is 1-chloro-3-hydroxymethyl-5- (2, 3-dihydroxypropyl) -S-triazinetrione.
Example 5
The production process of the aqueous adhesive for the automobile object covering curtain comprises the following steps:
s1, weighing the following raw materials in parts by weight: 60 parts of silicone-acrylic emulsion, 8 parts of nano silicon dioxide, 0.25 part of dioctyl sodium sulfosuccinate, 0.25 part of nonylphenol polyoxyethylene ether, 7 parts of modified gamma-cyclodextrin, 1 part of propylene glycol phenyl ether, 3 parts of polyvinyl alcohol, 6 parts of potassium citrate, 0.15 part of an organic silicon defoamer, 1.5 parts of an antibacterial additive, 10 parts of ethanol and 20 parts of water;
s2, adding the silicone-acrylic emulsion, the propylene glycol phenyl ether, the organic silicon defoamer and the polyvinyl alcohol into ethanol, stirring at the rotating speed of 300r/min for 15min, and uniformly mixing to obtain a component A; adding nano silicon dioxide, an anionic surfactant, a nonionic surfactant, modified gamma-cyclodextrin, potassium citrate and an antibacterial additive into water, stirring at the rotating speed of 300r/min for 15min, and uniformly mixing to obtain a component B; and adding the component A into the component B, stirring at the rotating speed of 300r/min for 40min, and uniformly mixing to obtain the aqueous adhesive for the automobile covering curtain.
The preparation method of the modified gamma-cyclodextrin comprises the following steps: stirring 230g of gamma-cyclodextrin, 20g of maleic anhydride and 1500g N, N-dimethylformamide at 80 ℃ for 12h at the rotating speed of 600r/min, cooling to room temperature, and standing for 8h to obtain a reaction solution; precipitating the reaction solution in chloroform, and drying the precipitate at 70 ℃ for 30h to obtain pretreated gamma-cyclodextrin; the preparation method comprises the following steps of (1) mixing pretreated gamma-cyclodextrin, polyvinylpyrrolidone, nano titanium dioxide and water in a mass ratio of 1: 0.04: 0.03: 20 stirring and mixing for 30min at the rotating speed of 500r/min, adding sodium persulfate accounting for 0.1 percent of the weight of the gamma-cyclodextrin, heating to 70 ℃, stirring for 3.5h at the rotating speed of 600r/min, and obtaining mixed liquor; spray drying the mixed solution at inlet temperature of 180 deg.C, outlet temperature of 75 deg.C, and hot air speed of 4m3At 50mL/min, the feed rate and the rotational speed of the atomizer300 r/min; thus obtaining the modified gamma-cyclodextrin.
The antibacterial auxiliary agent is 1-chloro-3, 5-diepoxypropyl-S-triazinetrione, 1-chloro-3-hydroxymethyl-5- (2, 3-dihydroxypropyl) -S-triazinetrione according to the mass ratio of 1: 0.5 of a mixture.
Test example 1
The aqueous adhesives of examples 1-5 were used for performance testing of automotive window coverings. Specific results are shown in table 1.
Testing the water resistance of the adhesive film: the aqueous adhesive for the automobile covering curtain prepared in the embodiment is cast on a smooth and clean polytetrafluoroethylene plate to form a film, the film is placed at 25 ℃ for three days to be dried and formed into a film, and then the film is continuously dried for 12 hours in a vacuum drying oven at 50 ℃ and the vacuum degree of 130Pa, and the thickness of the film is 2 mm. Cutting the glue film into samples of 30mm multiplied by 30mm, drying in a vacuum drying oven at 50 ℃ for 12 hours, weighing to obtain m1, soaking in deionized water at 20 ℃ for 24 hours, taking out, quickly absorbing surface moisture by using filter paper, weighing to obtain m2, and obtaining water absorption (%) [ (m2-m1)/m1] × 100%.
Antibacterial property: according to the determination method and the determination of the antibacterial property and the antibacterial effect of the GB/T21866-2008 antibacterial coating and the determination of the HG/T3980-: candida albicans (ATCC 10231).
And (3) testing the anti-illumination aging performance:
1. preparing an adhesive film: the aqueous adhesive for the automobile covering curtain prepared in the embodiment is cast on a smooth and clean polytetrafluoroethylene plate to form a film, the film is placed at 25 ℃ for three days to be dried and formed into a film, and then the film is continuously dried for 12 hours in a vacuum drying oven at 50 ℃ and the vacuum degree of 130Pa, and the thickness of the film is 2 mm.
2. Ultraviolet irradiation aging treatment: and (3) fixing the adhesive film sample on a sample rack of an ultraviolet accelerated aging lamp box, wherein the working temperature in the lamp box is 45 ℃. And carrying out an artificial ultraviolet aging experiment on the sample, wherein the irradiation time is 400 hours. The test conditions of the ultraviolet lamp box are as follows:
(1) the working size is as follows: 450X 1170X 500 mm;
(2) size of the sample plate: 150X 75 mm;
(3) lamp tube spacing: 35 mm;
(4) distance between the sample and the lamp tube: 50 mm;
(5) ultraviolet wavelength: 340 nm;
(6) power: 40W is multiplied by 6;
(7) irradiation amount: 40W/cm2。
3. And (3) testing tensile strength: the adhesive film was cut into a dumbbell-shaped specimen having a length of 20mm and a width of 4mm with a standard guillotine, the specimen was left to stand at 25 ℃ and a relative humidity of 60% for 24 hours, and the tensile strength of the adhesive film was measured with a Zwick/Roell Z020 type universal material tester (Zwick, Germany) at a tensile rate of 150 mm/min. And testing the tensile strength of the adhesive film before and after ultraviolet irradiation aging treatment. The tensile strength reduction (%) is (tensile strength before ultraviolet irradiation aging-tensile strength after ultraviolet irradiation aging)/tensile strength before ultraviolet irradiation aging × 100.
Table 1: test result table
The aqueous adhesive for the automobile covering curtain provided by the invention is used for treating gamma-cyclodextrin, and then is grafted and modified with nano titanium dioxide, so that the light resistance and the corrosion resistance of the adhesive are enhanced. The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (8)
1. A production process of an aqueous adhesive for an automobile object covering curtain is characterized by comprising the following steps:
s1, weighing the following raw materials in parts by weight: 50-70 parts of silicone-acrylic emulsion, 5-15 parts of nano silicon dioxide, 0.1-0.5 part of anionic surfactant, 0.1-0.5 part of nonionic surfactant, 4-10 parts of modified gamma-cyclodextrin, 0.5-1.5 parts of propylene glycol phenyl ether, 1-5 parts of polyvinyl alcohol, 3-9 parts of potassium citrate, 0.1-0.3 part of organic silicon defoamer, 1-3 parts of antibacterial additive, 5-15 parts of ethanol and 10-30 parts of water;
s2, adding the silicone-acrylic emulsion, the propylene glycol phenyl ether, the organic silicon defoamer and the polyvinyl alcohol into ethanol, stirring at the rotation speed of 200-500r/min for 10-20min, and uniformly mixing to obtain a component A; adding nano silicon dioxide, an anionic surfactant, a nonionic surfactant, modified gamma-cyclodextrin, potassium citrate and an antibacterial additive into water, stirring at the rotation speed of 200-500r/min for 10-20min, and uniformly mixing to obtain a component B; adding the component A into the component B, stirring at the rotation speed of 200-500r/min for 30-60min, and uniformly mixing to obtain the final product.
2. The production process of the aqueous adhesive for the automobile covering curtain as claimed in claim 1, which is characterized in that: the anionic surfactant is dioctyl sodium sulfosuccinate.
3. The production process of the aqueous adhesive for the automobile covering curtain as claimed in claim 1, which is characterized in that: the nonionic surfactant is octyl phenol polyoxyethylene ether or nonyl phenol polyoxyethylene ether.
4. The production process of the aqueous adhesive for the automobile covering curtain as claimed in claim 1, which is characterized in that: the preparation method of the modified gamma-cyclodextrin comprises the following steps: stirring 200-250g gamma-cyclodextrin, 15-25g maleic anhydride and 1200-1800g N N-dimethylformamide at 75-85 ℃ and at the rotating speed of 500-1000r/min for 10-20h, cooling to room temperature, and standing for 5-10h to obtain a reaction solution; precipitating the reaction solution in chloroform, and drying the precipitate at 65-75 ℃ for 25-35h to obtain pretreated gamma-cyclodextrin; the preparation method comprises the following steps of (1) mixing pretreated gamma-cyclodextrin, polyvinylpyrrolidone, nano titanium dioxide and water in a mass ratio of 1: (0.02-0.06): (0.01-0.05): (10-30) stirring and mixing for 20-50min at the rotating speed of 300-700r/min, adding sodium persulfate accounting for 0.05-0.2% of the weight of the gamma-cyclodextrin, heating to 60-90 ℃, stirring for 2-5h at the rotating speed of 500-1000r/min, and obtaining mixed solution; and (4) spray drying the mixed solution to obtain the product.
5. The production process of the aqueous adhesive for the automobile covering curtain as claimed in claim 4, which is characterized in that: the inlet temperature of the spray drying is 190 ℃ below zero, the outlet temperature is 70-85 ℃, the hot air speed is 3-5m3/min, the feeding speed is 30-60mL/min, and the rotating speed of the atomizing machine is 400 r/min.
6. The production process of the aqueous adhesive for the automobile covering curtain as claimed in claim 1, which is characterized in that: the antibacterial additive is at least one of 1-chloro-3, 5-diepoxy propyl-S-triazine trione and 1-chloro-3-hydroxymethyl-5- (2, 3-dihydroxypropyl) -S-triazine trione.
7. The production process of the aqueous adhesive for the automobile covering curtain as claimed in claim 1, which is characterized in that: the particle size of the nano silicon dioxide is 1-100 nm.
8. An aqueous adhesive for automobile covering curtains, which is characterized by being prepared by the production process of any one of claims 1 to 7.
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|---|---|---|---|---|
| CN101302275A (en) * | 2008-07-01 | 2008-11-12 | 上海大学 | Method for preparing copolymer aquagel having cyclodextrin structure by electron beam radiation |
| CN101353391B (en) * | 2008-07-22 | 2013-04-17 | 四川伟才化工有限公司 | Silicone-acrylate emulsion and production process thereof |
| CN101864034B (en) * | 2010-06-06 | 2012-04-18 | 西北大学 | Application of acrylic acid cyclodextrin polymer in dyeing industrial waste water treatment |
| CN104479598B (en) * | 2014-11-27 | 2016-10-19 | 苏州市贝克生物科技有限公司 | Water proofing property medical adhesive and preparation method thereof |
| CN107022325A (en) * | 2017-04-27 | 2017-08-08 | 无锡市福享天下科技有限公司 | Senior wallpaper wall paper adhesive |
-
2018
- 2018-12-26 CN CN201811599339.2A patent/CN109722187B/en active Active
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| CN109722187A (en) | 2019-05-07 |
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