Paint, and preparation method and application thereof
A coating and pigment technology, applied in the field of water-based one-component coatings, to achieve the effects of reducing VOC emissions, good mechanical properties, and lightening loads
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Embodiment 1
[0033] The preparation method of the coating of the present embodiment comprises the following specific steps:
[0034] Step 1: Add A81 aldehyde resin into a three-neck flask equipped with a condenser and stirring.
[0035] Step 2: Add TDI trimer, raise the temperature to 80° C., and react for 2 hours. Adding an appropriate amount of catalyst dibutyltin dilaurate while adding the TDI trimer can effectively shorten the reaction time.
[0036] Step 3, adding isopropyl titanate to continue the reaction for 2 h.
[0037]In step 4, the temperature is lowered to below 60°C and the material is discharged to obtain an interface adhesion promoter. The mass ratio of isopropyl titanate, TDI trimer and A81 aldehyde resin added in the above steps is 4:2:1. The interfacial adhesion promoter prepared by adding metal organic matter, polyisocyanate and hydroxyl-containing oligomer at this mass ratio is the most stable.
[0038] Step 5, 20 parts by weight of carbon black slurry, 100 parts b...
Embodiment 2
[0041] The preparation method of the coating of the present embodiment comprises the following specific steps:
[0042] Step 1, adding solid hydroxy acrylic resin into a three-neck flask equipped with a condenser and stirring.
[0043] Step 2: Add TDI-TMP adduct, raise the temperature to 80° C., and react for 2 hours.
[0044] Step 3, adding aluminum isopropoxide to continue the reaction for 2 h.
[0045] In step 4, the temperature is lowered to below 60°C and the material is discharged to obtain an interface adhesion promoter. The mass ratio of aluminum isopropoxide, TDI-TMP adduct and solid hydroxyl acrylic resin added in the above steps is 4:2:1.
[0046] Step five, with 35 parts by weight of titanium white paste, 5 parts by weight of barium sulfate, 100 parts by weight of carboxyl-containing anionic water-based acrylic modified polyurethane resin, 8 parts by weight of auxiliary agents, 3 parts by weight of interfacial adhesion promoter and 20 parts by weight of deionize...
Embodiment 3
[0049] The preparation method of the coating of the present embodiment comprises the following specific steps:
[0050] Step 1, epoxy resin is added in the there-necked flask with condenser and stirring.
[0051] Step 2: Add biuret N75, heat up to 80°C, and react for 2 hours.
[0052] Step 3, adding zirconate to continue the reaction for 2h.
[0053] In step 4, the temperature is lowered to below 60°C and the material is discharged to obtain an interface adhesion promoter. The mass ratio of zirconate, biuret N75 and epoxy resin added in the above steps is 4:2:1.
[0054] Step five, with 33 parts by weight of phthalocyanine blue syrup, 100 parts by weight of carboxyl-containing anionic water-based fluorine-modified polyurethane resin, 10 parts by weight of auxiliary agents, 3 parts by weight of interfacial adhesion promoter and 20 parts by weight of Deionized water was put into a stainless steel cylinder for stirring and dispersing, the rotation speed was set at 700rad / min, ...
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