A kind of external wall interface agent and preparation method thereof
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An interfacial agent and wall technology, applied in coatings, rosin coatings, alginic acid coatings, etc., can solve the problems affecting the bonding performance of interfacial agents, and achieve the effects of increased adhesion, strong flexibility, and good air permeability.
Active Publication Date: 2021-10-08
HUBAO NEW MATERIAL TECH SHANGHAI CO LTD
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[0003] The existing interface agent needs to be dried and cured for a period of time after it is applied to the exterior wall of the building. Generally, the drying and curing time is 12 hours. Adhesive properties of the interface agent
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preparation example Construction
[0039] Preparation example of polyvinyl acetate emulsion
[0040] The polyvinyl alcohol in the following preparation examples was purchased from polyvinyl alcohol 1799100-27 produced by Shanghai Huihu Industrial Co., Ltd.; vinyl acetate was purchased from Jinan Mingwei Chemical Co., Ltd., with a density of 0.93g / cm 3 ; Dibutyl phthalate was purchased from Xi'an Tianmao Chemical Co., Ltd.; Butyl acrylate was purchased from Jinan Mingwei Chemical Co., Ltd.
preparation example 1
[0041] Preparation example 1: polyvinyl acetate emulsion is prepared by the following method:
[0042] ⅠWeigh 62kg of deionized water, 6kg of polyvinyl alcohol, 32kg of vinyl acetate, 0.28kg of ammonium persulfate, 0.04kg of dibutyl phthalate, 7kg of butyl acrylate, and 0.08kg of sodium bicarbonate;
[0043] ⅡPlace deionized water and polyvinyl alcohol in a reaction kettle, stir for 5 minutes at 87°C and 600 r / min, then add dibutyl phthalate and sodium bicarbonate and continue stirring for 4 minutes to obtain a stirring liquid;
[0044] Ⅲ Add ammonium persulfate, vinyl acetate, and butyl acrylate to the stirred liquid prepared by Ⅱ, and stir at a speed of 550r / min for 12min to prepare a polyvinyl acetate emulsion.
[0045] Preparation of polyvinyl alcohol solution The titanate coupling agent in the following preparation examples was purchased from Hefei Anbang Chemical Co., Ltd., model 550; the polyvinyl alcohol was purchased from Shanghai Huihu Industrial Co., Ltd. polyvinyl ...
preparation example 2
[0046] Preparation example 2: polyvinyl alcohol solution is prepared by the following method:
[0047] ①Weigh 70kg of deionized water, 3.5kg of polyvinyl alcohol, and 0.25kg of titanate coupling agent;
[0048] ②Put deionized water and polyvinyl alcohol in a reaction kettle, stir for 40 min at 85°C and 400 r / min, then add titanate coupling agent and continue stirring for 1.8 h to obtain a polyvinyl alcohol solution.
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Abstract
This application relates to the field of building materials, and specifically discloses an interface agent for exterior walls and a preparation method thereof; an interface agent for exterior walls, which is made of the following raw materials in parts by weight: polyvinyl acetate emulsion, polyvinyl alcohol solution, Deionized water, defoamer, micropowder silica gel, lecithin, sucrose, absolute ethanol, functional emulsion; its preparation method is: take raw materials, lecithin and absolute ethanol to prepare lecithin solution; sucrose and part of deionized water Prepare sucrose solution; micropowder silica gel and remaining deionized water to obtain aqueous solution; mix and stir polyvinyl acetate emulsion, polyvinyl alcohol solution, aqueous solution, lecithin solution, and sucrose solution to obtain premix; defoamer, functional emulsion, premix The finished interface agent is prepared by stirring the mixed liquid; it has a good waterproof effect and can prevent the rainwater of the interface agent from affecting the bonding performance of the interface agent during the drying process.
Description
technical field [0001] The application relates to the field of building materials, more specifically, it relates to an exterior wall interface agent and a preparation method thereof. Background technique [0002] The interface agent is a kind of adhesive substance, which is mainly used to treat the surface of the object. It can be coated on the surface of concrete, terrazzo, cement, mortar, and water brush stone. The interface agent can consolidate the substrate and allow other substances to cover it. And the interface agent has excellent permeability, can fully infiltrate the surface of the base material of the wall, make the base layer dense through glue connection, improve the interface adhesion, improve the bonding strength between the mortar or putty and the wall surface, and prevent hollowing. [0003] The existing interface agent needs to be dried and cured for a period of time after it is applied to the exterior wall of the building. Generally, the drying and curing ...
Claims
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