Resin emulsion for water-borne wood paint and preparation method thereof
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A technology of water-based wood paint and resin emulsion, applied in the direction of coating, etc., can solve the problems of low hardness, poor heat resistance, poor water resistance, etc.
Active Publication Date: 2012-02-08
山东宝达新材料有限公司
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Problems solved by technology
However, these wood lacquers have major defects in quality, such as poor water resista
Method used
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Embodiment 1
[0046] Prepare the resin emulsion for water-based wood ware paint with the following batch-feeding type emulsion polymerization method, comprise the following steps:
[0047] a) Initial feeding
[0048] 210 parts by weight of deionized water, 2 parts by weight of sodium lauryl alcohol polyoxyethylene ether sulfonate and 3 parts by weight of sodium dodecyl diphenyl ether disulfonate with a percentage concentration of 25wt% were added to the reactor, ten Sodium dialkyl alcohol polyoxyethylene ether sulfonate and sodium dodecyl diphenyl ether disulfonate are both hydrophilic emulsifiers, and the temperature is raised to 78-82 °C;
[0049] b) Inner core solution polymerization
[0050] Add the ammonium persulfate initiator into the reaction kettle, then add the inner core reaction material, the temperature rises to 86-88 ° C, and react until there is no reflux in the condenser. The inner core reaction material includes:
[0051]
[0052] C) Solution polymerization of outer co...
Embodiment 2
[0065] Embodiment 2, embodiment 3, embodiment 4 and embodiment 5 are basically the same as embodiment 1, except that the components and addition amounts of the initial materials and the reaction materials of each layer are different, see Table 1.
[0066] Table 1
[0067]
[0068]
[0069] Produce resin emulsion with above-mentioned embodiment, then make water-based wood lacquer with common method, its performance index is as shown in table 2:
[0070] Table 2
[0071]
[0072] The commercially available water-based wood lacquer with acrylic acid and polyurethane composition as the main component, under the same conditions, its viscosity (cp) is generally around 800, and its hardness is HB. In the 24-hour water resistance test, the coating appears obvious whitish. , Bubbling and shedding phenomenon, use soy sauce, coffee, etc. to do the stain resistance test, there are traces after scrubbing, and the surface is sticky in the heat resistance test at 80°C for 0.5 hours...
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Abstract
The invention discloses a resin emulsion for a water-borne wood paint and a preparation method thereof. The resin emulsion and the preparation method thereof are characterized in that: firstly, vinyl versatate is introduced to a prescription and is subjected to an emulsion copolymerization reaction together with alkyl methacrylate and other functional monomers; secondly, an emulsion polymerization process for intermittently feeding is adopted; and each polymerized emulsion particle comprises four layer from the inside to the outside, namely an inner core, an outer core, an inner casing and an outer casing respectively; and thirdly, an inner casing reaction material and an outer casing reaction material contain diacetone acrylamide and other cross-linking agents; and in the drying and film-forming process of the water-borne paint, the diacetone acrylamide and other cross-linking agents are subjected to a cross-linking reaction with adipic dihy drazide so as to form a compact body form netlike structure. According to the water-borne wood paint prepared from the resin emulsion, the water resistance, heat resistance and hardness of a paint film can be remarkably improved.
Description
technical field [0001] The invention relates to the technical field of resin emulsion for water-based wood ware paint, and also relates to a preparation method of the resin emulsion. Background technique [0002] Traditionally used wood lacquers use organic solvents as diluents, which contain various organic substances such as benzene, which are extremely harmful to the human body if inhaled; exhausted into the atmosphere, causing serious air pollution and destroying the environment. At the same time, organic solvents are flammable and Explosion and other safety hazards. Based on the above reasons, in recent years, some people have begun to develop water-based wood lacquers with water as the diluent. At present, there are mainly the following types on the market: ①Water-based wood lacquers with acrylic acid as the main component, ②Acrylic acid and polyurethane composites. Water-based wood lacquer as the main component, ③Water-based wood lacquer with polyurethane as the main...
Claims
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