A kind of anti-corrosion wear-resistant polyester resin and preparation method thereof
A polyester resin, anti-corrosion and wear-resistant technology, used in polyester coatings, anti-corrosion coatings, powder coatings, etc., can solve the problems affecting the anti-corrosion and wear resistance of resin coatings, uneven distribution of fiber powder, and no solution to fiber powder. Reunion problems and other problems, to achieve the effect of improving weather resistance and corrosion resistance, improving interfacial adhesion, and improving compatibility
Active Publication Date: 2021-07-27
ZHEJIANG GUANGHUA NEW MATERIALS
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Problems solved by technology
[0007] However, the above-mentioned inventions are all made by grinding the inorganic fiber powder and directly adding other components such as resin to mix, which does not solve the problem of agglomeration of the fiber powder, resulting in uneven distribution of the fiber powder in the resin, which affects the quality of the resin coating. Corrosion and abrasion resistance
Method used
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Embodiment 1
[0035] A kind of anticorrosion wear-resistant polyester resin, described polyester resin component is as shown in embodiment 1 in table 1 by weight;
[0036] A preparation method of anti-corrosion wear-resistant polyester resin, comprising the following steps:
[0037]Step 1, adopt melting two-step method to synthesize polyester polymer, the neopentyl glycol, 1,2-ethylene glycol, diphenylsilanediol, trimethylolpropane, terephthalic acid , 2,5-furandicarboxylic acid, and esterification catalyst stannous oxalate were added to the reaction kettle, nitrogen gas was introduced into the reaction kettle, the temperature was gradually raised and stirred, and the esterification reaction was started at 140°C, and when the water began to flow, slowly heated to 200°C Measure the acid value after 1.5-3.5 hours of heat preservation reaction. After the acid value reaches 20mgKOH / g, add isophthalic acid and trimellitic anhydride to stop nitrogen and start vacuuming. After 2-3 hours of pressur...
Embodiment 2-7
[0043] The polyester resin components are as shown in Examples 2-7 in Table 1 by weight, and the preparation method is the same as in Example 1.
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Abstract
The invention provides an anti-corrosion and wear-resistant polyester resin and a preparation method thereof, wherein the anti-corrosion and wear-resistant polyester resin includes polyester powder A and fiber-reinforced polyester powder B; and an anti-corrosion and wear-resistant polyester resin The preparation method comprises step 1, synthesizing the polyester polymer with the polymer monomer in the formula dosage by melting two-step method; step 2, adding the curing accelerator in the formula dosage into the polyester polymer; step 3, melting The polyester polymer is cooled, pulverized, and ground to obtain polyester powder A; step 4, the molten polyester polymer is coated on the inorganic fiber unidirectional cloth to obtain an inorganic long fiber reinforced polyester coating, which is cut off after cooling , and grind to obtain fiber-reinforced polyester powder B; Step 5, polyester powder A is mixed with fiber-reinforced polyester powder B to obtain anti-corrosion and wear-resistant polyester resin, and fiber powder is evenly dispersed in the middle of the resin, which improves the polyester resin. Corrosion and abrasion resistance.
Description
technical field [0001] The invention relates to the field of powder coatings, in particular to an anti-corrosion and wear-resistant polyester resin and a preparation method thereof. Background technique [0002] Powder coating is a kind of solvent-free, pure solid powder coating. It is a powder coating obtained by physical mixing and hot extrusion of components such as resin, curing agent, filler and pigment. Different from traditional solvent-based coatings, powder coatings do not use chemical solvents, but choose air as the spray dispersion medium, which solves the human hazards and environmental pollution caused by traditional coatings. At present, powder coatings are widely used in household appliances, auto parts, public facilities, medical equipment, hardware tools and other fields due to their excellent environmental performance, mechanical properties and aging resistance. [0003] Polyester powder coatings are one of the most common types of powder coatings. As an i...
Claims
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IPC IPC(8): C09D167/02C09D5/03C09D5/08C09D7/61C08G63/695
CPCC08G63/6956C08L2201/08C09D5/033C09D5/08C09D167/02C08K9/10C08K7/10
Inventor 祝一平
Owner ZHEJIANG GUANGHUA NEW MATERIALS