Preparation method of smokeless and odorless powder coating for electric oil heaters
A technology of powder coating and electric oil coating, which is applied in the direction of powder coating, polyester coating, epoxy resin coating, etc., and can solve the problems that affect the user's mood and health
Active Publication Date: 2013-09-25
ZHEJIANG HUACAI NEW MATERIAL CO LTD
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Problems solved by technology
In order to keep warm and save energy, electric heaters are usually used in a well-enclosed space, so the smoke and smell are not easy to disperse, and long-term use will affect the user's mood and health
Method used
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Embodiment Construction
[0023] The present invention is further illustrated below by way of examples.
[0024] Accurately weigh the material according to the formula composition of the embodiment in Table 1, place it in a high-speed mixer and mix it for 6-8 minutes; extrude it with an extruder at a temperature of 90-100°C after mixing the material; cool and crush the extruded material with a pulverizer Crushed into powder particles with an average particle size of 38-42 microns; then sieved with a 180-mesh sieve, and finally packaged into a finished product.
[0025] In order to further illustrate the unique performance of the preparation method of the powder coating for smokeless and tasteless electric grease of the present invention, two groups of comparison formulas are listed in Table 1:
[0026] Table 1 The formula (percentage by weight) of the preparation method examples and comparative examples of powder coatings for smokeless and tasteless electric grease
[0027]
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Abstract
The present invention relates to a preparation method of a smokeless and odorless powder coating for electric oil heaters, wherein the powder coating is prepared by the following raw materials: epoxy resin, polyester resin, a reactive flatting agent, a macromolecular degassing agent, pigments and fillers and other additives. The method provided by the invention comprises the steps of putting the components into a high-speed mixer and mixing for six to eight min; squeezing out the mixed material with an extruder at the temperature of 90 DEG C to 100 DEG C after mixing; cooling and breaking the extrudate and pulverizing the same through a pulverizer into powder particles with an average particle size of 38 to 42 micrometers; sieving the powder particles with a 180 mesh sieve, and finally packaging the powder into finished products. According to the invention, the reactive flatting agent with active group for liquid coating is used as a flatting agent. The flatting agent reacts during coating curing, and is solidified together with the coating, whereby no smoke or odor is caused by volatilization of the flatting agent during later use. Benzoin is displaced by a macromolecule degassing agent that will not be volatilized to cause smoke and odor under the operating temperature of oil heaters.
Description
technical field [0001] The invention relates to the field of powder coatings. Background technique [0002] When the electric oil is used, the local surface temperature is as high as 150 ℃. At such a high temperature, the small molecular substances in the surface powder coating coating, such as leveling agent and degassing agent benzoin, will volatilize to form smoke and produce unpleasant smell. In order to keep warm and save energy, electric heaters are usually used in a well-enclosed space, so the smoke and smell are not easy to dissipate, and long-term use will affect the mood and health of users. [0003] Chinese invention patent application (application number: 200910027278.7 application date: 2009-05-25) discloses a high-temperature-resistant and energy-saving electrostatic powder coating for electric heaters and its preparation method. In the formula of this powder coating, it is calculated by weight percentage Thermosetting resins account for 53-57%, curing agents ...
Claims
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IPC IPC(8): C09D167/00C09D163/00C09D7/06C09D5/03C09D7/47
Inventor 孙华强
Owner ZHEJIANG HUACAI NEW MATERIAL CO LTD