Powder paint for engineering machinery, powder resin for engineering machinery and preparation method thereof
A technology of construction machinery and powder resin, which is applied in the direction of powder coatings, anti-corrosion coatings, polyester coatings, etc., can solve the problems of restricting the application field of powder coatings, difficult to achieve the surface performance and use performance of construction machinery, and influence
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[0066] A second aspect of the present invention provides a method for preparing powdered resin for engineering machinery, the preparation method at least including the following steps:
[0067] (1) Preparation of mixed monomers: uniformly mixing 50-70 wt% of dicarboxylic acid compounds, alkyl alcohol compounds and catalysts;
[0068] (2) Raise the temperature after putting (1) in, control the heating rate to 2-4°C / h, raise the temperature to 200-250°C and keep warm until the material is clarified;
[0069] (3) Carry out secondary feeding, put in the remaining dicarboxylic acid compounds and cross-linking monomers, keep warm at 200-250°C for 1.5-4 hours, and measure the acid value to 48;
[0070] (4) After the second heat preservation is completed, under the condition of vacuum degree -0.090MPa, react for 1-3h, stop vacuuming, and measure the acid value to 35;
[0071] (5) Cool down to 190-230°C, add accelerator, and you get it.
[0072] In a preferred embodiment, the prepara...
Embodiment 1
[0094] Provided is a powder resin for construction machinery. The raw materials for preparation include: 30 parts of alkyl alcohol compounds, 62 parts of dicarboxylic acid compounds, 4 parts of crosslinking monomers, 0.1 parts of catalysts, and 0.2 parts of accelerators in parts by weight. share.
[0095] The alkyl alcohol compound is a combination of cyclohexanedimethanol, hexanediol and neopentyl glycol, wherein the mass ratio of hexanedimethanol, hexanediol and neopentyl glycol is 1:0.3:2.
[0096] The dicarboxylic acid compound is selected from the combination of terephthalic acid, isophthalic acid, and 1,4 cyclohexanedicarboxylic acid, wherein terephthalic acid, isophthalic acid, and 1,4 cyclohexanedicarboxylic acid The mass ratio is 8:3:1.
[0097] The crosslinking monomer is a combination of glycidyl methacrylate and glycidyl tertiary carbonate, wherein the mass ratio of glycidyl methacrylate to glycidyl tertiary carbonate is 1:1.
[0098] The catalyst is an organotin...
Embodiment 2
[0111] Provided is a powder resin for engineering machinery. The raw materials for preparation include: 10 parts of alkyl alcohol compounds, 40 parts of dicarboxylic acid compounds, 0.5 parts of cross-linking monomers, 0.01 parts of catalysts, and 0.05 parts of accelerators in parts by weight. share.
[0112] The alkyl alcohol compound is a combination of cyclohexanedimethanol, hexanediol and neopentyl glycol, wherein the mass ratio of hexanedimethanol, hexanediol and neopentyl glycol is 1:0.3:2.
[0113] The dicarboxylic acid compound is selected from the combination of terephthalic acid, isophthalic acid, and 1,4 cyclohexanedicarboxylic acid, wherein terephthalic acid, isophthalic acid, and 1,4 cyclohexanedicarboxylic acid The mass ratio is 8:3:1.
[0114] The crosslinking monomer is a combination of glycidyl methacrylate and glycidyl tertiary carbonate, wherein the mass ratio of glycidyl methacrylate to glycidyl tertiary carbonate is 1:1.
[0115] The catalyst is an organ...
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Abstract
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