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A technology for architectural coatings and resins, applied in coatings and other directions, can solve the problems of unstable coating properties, easy peeling, peeling, and low fixing performance of coatings, and achieve the effects of reduced foaming ratio, improved dispersion performance, and improved stability.
Inactive Publication Date: 2019-03-29
陈泽威
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[0005] However, considering the special properties of metal steel pipes and the nature of the curved wall surface of steel pipes, the application effect of existing coatings on metal steel pipes is often limited, which easily leads to unstable coating properties, easy peeling and falling off of coatings, and poor fixing performance. high problem
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no. 1 example
[0023] The preparation method of the architectural coating provided in this embodiment includes the following steps: .
[0024] S1: divide 28 parts of styrene-acrylate copolymer emulsion into the first part of emulsion and the second part of emulsion, and the weight ratio of the first part of emulsion and second part of emulsion is 1:1;
[0025] S2: Mix the first emulsion with 7 parts of sodium tripolyphosphate to obtain a mixed dispersion solution;
[0026] S3: pass 35 parts of ammonium polyphosphate, 25 parts of titanium dioxide, 25 parts of nano calcium carbonate, 12 parts of hydroxyethyl cellulose, 26 parts of pentaerythritol, 14 parts of chlorinated paraffin, 7 parts of aluminum silicate fiber, and 12 parts of defoamer Mixing after grinding to obtain a grinding mixture;
[0027] S4: mixing the grinding mixture with the mixed dispersion solution to form an intermediate mixture;
[0028] S5: Mix the intermediate mixture with the second emulsion, 100 parts of PVB (polyviny...
no. 2 example
[0033] On the basis of the above-mentioned first embodiment, the architectural paint of this embodiment further includes a fluororesin, and the weight of the fluororesin is 20 to 50 parts.
[0034] In step S5, 20 to 50 parts of the fluororesin are mixed and added. After adding fluororesin, the adhesion to the pipe wall was further improved. After 24 months of observation, the area of paint peeling was less than 0.5%.
[0035] In S5, the order of adding materials is: adding the second emulsion, PVB resin, ethylene glycol monobutyl ether, amino resin, and etherified melamine resin to the intermediate mixture in turn, and keeping the intermediate mixture in a state of continuous stirring. On the contrary, if the intermediate mixture is added to the second emulsion and PVB resin, it will be easy to form a precipitate, and the solution stability will be reduced.
[0036] In addition, in other embodiments, when the viscosity of the coating is adjusted to 280mpa.s to 320mpa.s, the...
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Abstract
The invention discloses a building coating and a preparation method thereof. The building coating comprises the following components in parts by weight: 100 parts of polyvinyl butyral (PVB) resin, 30-50 parts of ammonium polyphosphate, 20-35 parts of titanium dioxide, 15-40 parts of amino resin, 15-30 parts of nano calcium carbonate, 25-40 parts of etherified melamine resin, 6-20 parts of hydroxyethyl cellulose, 15-30 parts of pentaerythritol, 4-20 parts of chlorinated paraffin, 6-20 parts of ethylene glycol monobutyl ether and 5-10 parts of sodium tripolyphosphate; and the building coating further comprises 20-30 parts of a styrene-acrylate copolymer emulsion, 4-10 parts of aluminum silicate fibers and 10-15 parts of a defoaming agent. The coating is applied to wall surfaces of building pipelines. The beneficial effects are as the follows that the PVB resin is adopted in the components, so that compared with an existing coating applied to building pipelines, the coating has improved adhesion capability on a pipeline, and the problem that the coating falls off and is stripped from the pipeline is reduced. The foaming rate of the coating provided by the invention is reduced, and thefire resistance time is prolonged.
Description
technical field [0001] The technical field to which the invention relates belongs to the field of architectural coatings, in particular to a coating for protecting the wall surface of a steel pipe structure in a building with a fireproof coating and a process method for preparing the same. Background technique [0002] In architectural coatings, the application of fire retardant coatings has been very extensive, which brings a certain guarantee to people's safety. In the event of a fire, fire retardant coatings can play a role in delaying the spread of fire. [0003] Fire retardant coatings are generally applied to the surface of easily combustible materials by means of coating components, thereby improving the original fire resistance of these materials, thereby slowing down the rate of flame spread; To prevent combustion, this type of coating is called fire retardant coating, or flame retardant coating. [0004] According to the type of application, the characteristics an...
Claims
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