30results about How to "Easy to recoat" patented technology

The invention discloses a dual-curing acrylic resin and a preparation method and application thereof. The dual-curing acrylic resin comprises the following raw materials: isobornyl methacrylate, acrylic acid, methyl methacrylate, styrene, hydroxyethyl acrylate, initiator Agent I, phosphine catalyst, glycidyl methacrylate, neutralizer and dipentaerythritol pentahexaacrylate. The invention forms a dual-curing acrylic resin under the action of a phosphine catalyst through the combination of various raw materials; the double bond and hydroxyl content in the resin are relatively high, and the hardness of the paint film formed after curing by ultraviolet light is good; Further improved film performance.

A high anti-corrosion coating prepared by loading nano silicon dioxide hyperbranched fluororesin. The coating is composed of component A and component B mixed at a mass ratio of 8 to 11:1; component A is composed of main raw materials loaded with nano-silica hyperbranched fluororesin and auxiliary materials mixed solvent, leveling agent, catalyst, pigment The filler is mixed; the second component is one of HDI biuret, HDI trimer or their mixture. The coating of the invention has excellent performances such as weather resistance, seawater immersion resistance, heat and humidity resistance, temperature change resistance, salt spray resistance and stain resistance, and can resist corrosion of marine environment for a long time, and the life of the coating film after one coating can reach more than 25 years. The preparation method of the high anticorrosion paint of the invention has simple operation and low equipment cost.

The invention discloses a metal template coating which is composed of, by weight, 70-90% of main resin, 3-10% of diluent, 3-10% of pigment and filler, 1-5% of auxiliary and 1-5% of photosensitive agent. The main resin is selected from one or multiple of aliphatic polyurethane acrylate, acrylate or aromatic methyl semi-acrylate, the diluent is selected from one or multiple of isobornyl acrylate, 1,6-hexanediol diacrylate or tripropylene glycol diacrylate, the pigment and filler comprises 20-30% of zinc stearate, 20-30% of bentonite, 20-30% of calcium carbonate and 20-30% of talcum powder, theauxiliary is selected from one or multiple of polysiloxane, unsaturated polyamide and hydroxyl acid salt or propylene glycol methyl ether, and the photosensitive agent is selected from one or multipleof 1-hydroxy cyclohexylphenyl ketone, 2-isopropyl thioxanthone or 2-benzyl-dimethyl amino-1-(4-morpholine phenyl) butanone.The preparation method does not need a curing agent, and momentary drying within 10s can be realized through ultraviolet curing. The metal template coating is powerful in bonding with an aluminum alloy template and less prone to shedding.

The invention discloses a pressurization alkali-boiling method for removing a ceramic layer in a thermal barrier coating. According to the pressurization alkali-boiling method for removing the ceramiclayer in the thermal barrier coating, alkali liquor is used for removing the ceramic layer in the thermal barrier coating; when the ceramic layer is removed, an alpha-Al2O3 layer on the interface ofthe ceramic layer and a metal layer chemically reacts with an alkali solution under a high temperature and a high pressure, so that the ceramic layer is tripped, damage to the metal bottom layer is avoided, and the metal bottom layer does not need to be repaired, so that the procedures are simple, and re-coating of the ceramic layer is facilitated. The pressurization alkali-boiling method can be implemented conveniently and rapidly, the equipment structure is simple, and operation is easy. Compared with a traditional mechanical sand blasting method, the process parameters can be accurately controlled, and the consistency of the product quality is high. It is found through practice that a ceramic layer of a part treated through the method is completely removed and effectively stripped without damaging a metal layer; and the thickness of the metal bottom layer is not changed before and after the ceramic layer is removed.