Aqueous epoxy putty, and preparation and use method thereof
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A technology of epoxy putty and water-based epoxy resin, applied in the field of coatings, can solve problems such as dissolution and failure to meet the requirements of oil-based paint, and achieve the effects of good adhesion, enhanced protection and high hardness
Active Publication Date: 2009-04-22
SHENZHEN GRANDLAND ENVIRONMENTAL COATING CO LTD
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Abstract
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a water-based epoxy putty, which can solve the problem of oil-based paint dissolving the polystyrene board due to missing coating of the water-based epoxy primer or the thickness of the coating does not meet the requirements. problems, and can well decorate and protect the top coat; the present invention also provides the preparation method and the use method of the water-based epoxy putty
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Embodiment 1
[0062] Prepare water-based epoxy putty main paint of the present invention:
[0063] Get each component according to the weight listed in "Example 1" in Table 1, and the preparation method is as follows:
[0064] Step 1. Add 13 kg of water in the formula to the production tank, slowly add 0.2 kg of 100,000 hydroxyethyl cellulose under medium-speed stirring, and stir for 10-15 minutes until the 100,000 hydroxyethyl cellulose is completely dissolved.
[0065] Step 2. Add defoamer BYK022: 0.3kg and wetting agent BYK346: 0.1kg according to the weight ratio, and stir for 10-15 minutes until completely uniform.
[0066] Step 3. Add 70kg of heavy calcium carbonate and 7.5kg of talcum powder according to the weight ratio, and disperse at high speed for 20-30 minutes. Stir unevenly, add water-based epoxy resin WATERPOXY1455: about 3kg, after about 5-8min, turn to high speed to 1200-1500r / min, disperse for 20-30min, until the fineness is 30-40 microns, within this time range If the di...
Embodiment 2
[0072] With each component weight listed in " embodiment 2 " in table 1, repeat the method described in above-mentioned embodiment 1 (only each component weight changes), prepare waterborne epoxy putty main paint; Repeat curing in embodiment 1 The components, proportioning and preparation method of the agent were prepared to obtain the water-based epoxy putty curing agent; the main paint and the diluent were mixed uniformly according to 20:1, and then the water-based epoxy putty was obtained after construction and drying according to the method described in Example 1 paint film.
[0073] The routine performance testing results are shown in the corresponding data of "Example 2" in Table 2.
Embodiment 3
[0075] With each component weight listed in " embodiment 3 " in table 1, repeat the method described in embodiment 1 (only each component weight changes), prepare waterborne epoxy putty main paint; Repeat the curing agent in embodiment 1 Components, proportioning and preparation method to prepare a water-based epoxy putty curing agent; mix the main paint and diluent uniformly according to 20:1, then carry out construction and drying according to the method described in Example 1 to obtain a water-based epoxy putty paint film . The routine performance test results are shown in the corresponding data of "Example 3" in Table 2.
[0076] Table II
[0077] serial number Test items Example 1 Example 2 Example 3 1 Construction good excellent good 2 Grinding hand sandable Excellent sandability good 3
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Abstract
The invention relates to an aqueous epoxy putty and a preparation method thereof. The preparation method comprises the following steps: 1. 13 to 18 weight portions of water is added with 0.2 to 0.5 weight portion of thickening agent under the stirring at the speed of 500 to 800 revolutions / minutes, is stirred and is fully dissolved; 2. 0.3 to 0.6 weight portion of a defoaming agent and 0.1 to 0.5 weight portion of wetting agent are sequentially added into the mixture and are evenly stirred; 3. 50 to 70 weight portions of powdered whiting and 7.5 to 15 weight portions of talcum powder are added into the mixture; under the rotational speed of 500 to 800 revolutions / minute, all composition are mixed; and if water is too little to stir the compositions evenly, 3 to 5 weight portions of an aqueous epoxy resin is added into the mixture, is stirred for 5 to 8 minutes till the fineness is between 30 and 40 microns at the rotational speed of 1,200 to1,500 revolutions / minute; 4. at the middle rotational speed, the residual amount of the aqueous epoxy resin is fully replenished to 15 to 20 weight portions totally and is evenly stirred; and 5. the mixture is continuously added with 0.1 to 0.2 weight portion of antiseptic and 3 to 5 weight portions of water, is stirred for 7 to 19 minutes at low speed, and is filtered to obtain the aqueous epoxy putty. According to weight ratio of 6 to 4, an aqueous epoxy curing agent and water are mixed to obtain a special matched curing agent; and according to weight ratio of 20 to 1, the aqueous epoxy putty and the curing agent are mixed for use. The aqueous epoxy putty can solve the problem that oily paint dissolves a polystyrene plate due to the fact that an aqueous epoxy primer is leaked to paint or the thickness of the painted primer does not meet the requirement, and can well decorate and protect a coating layer.
Description
technical field [0001] The invention relates to a coating, in particular to a water-based epoxy putty which is applied to the exterior wall of a building or an external thermal insulation system and matched with an epoxy primer, and a preparation method and an application method thereof. Background technique [0002] In developed countries, external wall thermal insulation technology has been applied for more than 60 years. After years of practice, it has been proved that buildings using external thermal insulation systems have a longer service life and reduced life-cycle costs. The effect of thermal energy saving is obviously better than that of internal heat preservation, and it can also save about 40% of heat preservation materials, and the comprehensive economic benefits are remarkable. The external thermal insulation project in China has been implemented for about 10 years. The basic methods of general external thermal insulation engineering are: expanded polystyrene (E...
Claims
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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/34C09D163/00
Inventor 赵雪连
Owner SHENZHEN GRANDLAND ENVIRONMENTAL COATING CO LTD
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