Home Company News Packaging Jue baking paint requires water boiling resistance for more than 6h, high gloss and good adhesion. How to develop the paint?

Packaging Jue baking paint requires water boiling resistance for more than 6h, high gloss and good adhesion. How to develop the paint?

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summary
The invention relates to a coating with strong water resistance and strong adhesion. Its raw materials include: polyether 220, polyether 3050, diisocyanate, tackifying resin, composite solvent, antioxidant, dimethyl silicone oil, dioctyl phthalate and bentonite; Wherein, the tackifying resin comprises petroleum resin, coumarone resin and terpene resin
Consultation record · answer: on December 25, 2021, packaging Jue baking paint is required to be resistant to boiling for more than 6h, with high gloss and good adhesion. How to develop the coating? The invention relates to a coating with strong water resistance and strong adhesion. Its raw materials include: polyether 220, polyether 3050, diisocyanate, tackifying resin, composite solvent, antioxidant, dimethyl silicone oil, dioctyl phthalate and bentonite; Wherein, the tackifying resin includes petroleum resin, coumarone resin and terpene resin
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Answer

 in winter, some materials in the packaging barrel need to be heated, and the paint film of the packaging barrel is easy to soften and fall off. Now most of them are heated by the oven, which is prone to explosion, combustion and other phenomena, resulting in safety accidents. Further, in the prior art, solvent based packaging barrel paint and water-soluble packaging barrel paint are basically used, and the VOC emission from their production is more than 200g /L, which is particularly serious to the environment. Therefore, those skilled in the art are committed to developing a safe, environment-friendly and durable environmental protection coating with high water resistance and heat resistance for packaging barrels. Technical realization elements: in view of the above defects of the prior art, the technical problem to be solved by the invention is to provide a safe, environmental friendly and durable environmental protection coating for high water and heat resistance of packaging barrels. In order to achieve the above purposes, the invention provides an environment-friendly coating with high water resistance and heat resistance for the packing barrel, which is composed of the following raw materials of weight: water based super branched epoxy acrylic resin emulsion 50~60 parts, titanium dioxide 20~25 parts, barium sulfate 3~6 parts, N-N two methanolamine 0.3 to 0.5 parts, silane coupling agent 0.5 to 1 parts, 10~15 deionized water, 5~8 amino resin 5~8, dispersant 0.2 to 0.2 parts, defoaming agent% to 0.2. 0.2 ~ 0.5 parts of leveling agent, 0.2 ~ 0.3 parts of base material wetting agent and 0.3 ~ 0.5 parts of thickener. Preferably, the following raw materials are made up of weight: water based over 50~55 epoxide acrylic emulsion, 20~22 titanium dioxide, 3~6 barium sulfate, 0.3 to 0.5 parts of N-N two methanolamine, 0.5 to 0.8 fractions of silane coupling agent, 10~12 10~12 deionized water, 5~6 5~6 amino acids, 0.2 to 0.2 parts of dispersant, 0.8 to 0% of defoamer, 1% to 0% of substrate wetting agent, and 10% thickener. Preferably, the following raw materials are made up of weight: water based over 55 epoxide acrylic resin emulsion, 20 titanium dioxide, 3 barium sulfate, 0.4 N-N two methanolamine, 0.7 silane coupling agents, 12 deionized water, 6 amino resin, 0.2 dispersants, 0.2 defoamer, 0.3 leveling agent, 6 wetting agent, and thickening agent. Preferably, the dispersant is a copolymer containing pigment affinity groups; The defoamer is a mixture of foam breaking polysiloxane and hydrophobic particles in polyethylene glycol; The leveling agent is an ionic polyacrylate solution; The base material wetting agent is polyether modified polydimethylsiloxane; The silane coupling agent is a diamino functional silane; The thickener is a urea modified polyurethane solution. A method for preparing an environment-friendly coating for packaging barrel with high water and heat resistance as described above includes the following steps: A. weighs the ingredients of each raw material, and adds a water-borne super branched epoxy acrylic resin emulsion in the mixing cylinder, stirring at a speed of 600 to 1000r/min. b. Add N-N dimethyl ethanolamine under stirring and adjust the pH to 8.5-9; c. Add titanium dioxide and barium sulfate in turn under stirring, disperse them evenly, and then grind them through the machine until the fineness is no more than 10 microns; d. 

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