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Reactive polymer surfactant containing epoxy group and its preparation method and application
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A surfactant, reactive technology, applied in coatings, anti-corrosion coatings, etc., to reduce environmental pollution, simplify the preparation process, and reduce the corrosion rate
Active Publication Date: 2019-03-15
南京仙宝科技有限公司
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Abstract
Description
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However, most of the traditional epoxy resins are solvent-based, which will release a large amount of volatile organic compounds during use, so water-based epoxy resins have become the current research direction of epoxy resins (Woo J T K, Toman A. Water-based Epoxy-acrylic graftcopolymer[J]. Progress in organic Coatings, 1993, 21(4): 371-385.)
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preparation example Construction
[0023] The present invention relates to the preparation method of epoxy group-containing reactive polymer surfactant, comprising the following steps:
[0024] Add the sodium bisulfite aqueous solution into the four-necked flask, and then heat it in a water bath to 65-80°C;
[0025] mixing allyl glycidyl ether and butyl acrylate to prepare a monomer mixed solution;
[0026] Add the monomer mixed solution, acrylamide aqueous solution and ammonium persulfate aqueous solution dropwise into the reactor respectively, and the dropping time is controlled at 0.5-1.5h;
[0027] React at constant temperature for 1-3 hours, and cool to room temperature to obtain a reactive polymer surfactant containing epoxy groups;
[0028] in:
[0029] The mass ratio of sodium bisulfite, allyl glycidyl ether, butyl acrylate, acrylamide and ammonium persulfate in aqueous solution of sodium bisulfite is (0.7-0.9):(9-13) :(2-4):(10-14):(3.0-3.6).
[0030] The aqueous solution of sodium bisulfite is pre...
Embodiment 1
[0033] Example 1: 0.7g of sodium bisulfite and 28g of distilled water were added to a four-neck flask, then heated in a water bath to 68°C, and 3g of butyl acrylate was dissolved in 12g of allyl glycidyl ether to prepare a monomer solution; 12g The acrylamide aqueous solution prepared by acrylamide and 22g of distilled water; the ammonium persulfate aqueous solution prepared by dissolving the mixed monomer solution, acrylamide aqueous solution and 3.4g of ammonium persulfate in 34g of distilled water respectively in the reactor, and the dropping time is controlled In 0.9h, react at constant temperature for 1.5h, and finally cool to room temperature to obtain the epoxy-containing reactive polymer surfactant.
Embodiment 2
[0034] Example 2: 0.8g of sodium bisulfite and 26g of distilled water were added to a four-neck flask, then heated in a water bath to 72°C, and 2.8g of butyl acrylate was dissolved in 11g of allyl glycidyl ether to prepare a monomer solution; Acrylamide aqueous solution prepared by 13g of acrylamide and 20g of distilled water; respectively dropwise add mixed monomer solution, acrylamide aqueous solution and ammonium persulfate aqueous solution prepared by dissolving 3.2g of ammonium persulfate in 35g of distilled water to the reactor, dropwise time Controlled at 1.2h, reacted at constant temperature for 2h, and finally cooled to room temperature to obtain a reactive polymer surfactant containing epoxy groups.
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Abstract
The invention relates to an epoxy group reactive high molecular surfactant and a preparation method and an application thereof. The preparation method comprises the following steps: adding a sodium hydrogen sulfite aqueous solution into a four-mouth flask to be heated in a water bath; mixing allyl glycidyl ether and butyl acrylate to prepare a monomer mixed solution; separately dropwise adding the monomer mixed solution, an acrylamide aqueous solution and an ammonium persulfate aqueous solution into a reactor; performing a constant temperature reaction; and performing cooling to room temperature to obtain the epoxy group reactive high molecular surfactant. The epoxy group reactive high molecular surfactant is prepared by virtue of a free radical polymerization one-step process. By simplifying the aqueous preparation process of the epoxy resin to a relatively great extent, the environmental pollution is reduced, and the reaction activity of the epoxy resin is maintained; and in addition, by means of physical adsorption action and chemical reactions on the surface of a metal, the corrosion resistance of the epoxy group reactive high molecular surfactant is synergically enhanced.
Description
technical field [0001] The invention relates to a metal anti-corrosion surfactant, in particular to an epoxy group-containing reactive polymer surfactant and a preparation method and application thereof. Background technique [0002] Corrosion of metals is a huge problem all over the world, and it has brought huge economic losses. The damage caused by corrosion can be found in all occasions where metals are used. According to statistics, metal equipment and materials scrapped due to corrosion each year are equivalent to 1 / 3 of the annual output of metal, causing huge losses. Therefore, reducing the corrosion rate of metals and prolonging the service life of steel has important economic value and meets the requirements of sustainable development. [0003] Epoxy resin is one of the most iconic protective materials for steel substrates. In the 1950s, Aggarwal LK. et al. conducted research on the anti-corrosion performance of epoxy resin reinforced metal (Aggarwal L K, Thapliya...
Claims
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Application Information
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