External drying assisting agent matched with polyurethane foam caulking agent and preparing method and application thereof
A polyurethane foam and desiccant technology, applied in the direction of polyurea/polyurethane adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the dry time of about 4-6 hours in season, and it needs to be around zero in winter It takes 24 hours or more to fully dry, long-term secondary corrections, time-consuming and labor-intensive problems, to achieve the effects of avoiding catalyst hydrolysis, accelerating dissolution speed, and rapid catalytic action
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[0024] The preparation method of the aerosol drying aid includes the following steps:
[0025] A. Weigh the preservatives, catalysts and water in proportion, add them to the reactor in the order of preservatives, water, and catalysts, and mix them. Heat up to no more than 30°C (preferably 20-25°C), and stir thoroughly until the solution Clear
[0026] B. Pour the drying aid solution prepared in step A into an aerosol tank, press the valve, and flush the propellant gas to obtain an external drying aid aerosol.
[0027] An application of external drying aid with polyurethane foam caulking agent refers to the use of external drying aid with one-component polyurethane foam caulking agent.
[0028] There are two ways to use the external drying aid and polyurethane foam jointing agent together:
[0029] (1) Mix the external drying aid into the foam produced by the polyurethane foam sealant, and then extrude the foam. An external drying aid extruding device can be installed on the glue gun, ...
Example Embodiment
[0033] Example 1
[0034] (1) An external drying aid aerosol with polyurethane foam sealant, including the following components:
[0035] Drying aid: Kasone preservative (5-chloro-2-methyl-4-isothiazolin-3-one) 7.5g, triethylenediamine catalyst 37.5g, distilled water 205g;
[0036] Projection gas: 30g propane butane (the mass ratio of propane to butane is 1:2).
[0037] (2) The preparation method of the aerosol drying aid is:
[0038] A. Weigh the preservatives, catalysts and distilled water, add them to the reactor in the order of preservatives, water, and catalysts and mix them. The temperature is raised to 20~25°C, and the mixture is fully stirred until the solution is clear;
[0039] B. Use a 400 ml tinplate aerosol can as a container, pour the drying aid solution in step A; press the valve and flush with the propellant gas propane butane to obtain the external drying aid aerosol.
[0040] (3) Application of the external drying aid
[0041] The external drying aid aerosol is used in co...
Example Embodiment
[0046] Example 2
[0047] (1) An external drying aid aerosol with polyurethane foam sealant, including the following components:
[0048] Drying aid: Kasone preservative (5-chloro-2-methyl-4-isothiazolin-3-one) 15.6g, triethylenediamine catalyst 26g, distilled water 218.4g;
[0049] Projection gas: 20g of propane and butane (the mass ratio of propane to butane is 1:4).
[0050] (2) The preparation method of the aerosol drying aid is:
[0051] A. Weigh the preservatives, catalysts and distilled water, add them to the reactor in the order of preservatives, water, and catalysts and mix them, control the temperature at 25±2℃, and stir well until the solution is clear;
[0052] B. Use a 400 ml tinplate aerosol can as a container, pour the drying aid solution in step A; press the valve and flush with the propellant gas propane butane to obtain the external drying aid aerosol.
[0053] (3) Application of the external drying aid
[0054] The external drying aid aerosol is used in combination with ...
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