echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Coatings News > Paints and Coatings Market > Coating process: manufacturing process of powder coating

    Coating process: manufacturing process of powder coating

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com
    Key tips: 1

    Preparation of amorphous polyester 423.4 parts of neopentyl glycol were added to a thermocouple reactor equipped with a stirrer, a distillation column connected to a water-cooled condenser, a nitrogen inlet and a temperature regulator

    When heated to 130 ℃, 719.6 phr isophthalic acid and 2.5 phr n-butyltin trioctylic acid were added, and then heated to 230 ℃, water was distilled from the reactor from 180 ℃, the acid value of the product was 34 mgKOH / g and the hydroxyl value was 3 mgKOH / g, Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint

    In fact, there is no ugly color in the wall paint, only the disharmonious color matching

    The use of wall color contains the knowledge of health

    Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health

    Grasp the basic principles of wall color and paint a colorful space

    1、 Wall paint color selection notice 1

    Light color is generally used for the top surface

    Light colors make people feel light, dark colors make people feel heavy

    Usually, the treatment of rooms is from top to bottom, from shallow to deep

    For example, the ceiling and walls of rooms are white and Home of coatings: 1

    The preparation of amorphous polyester add 423.4 parts of neopentyl glycol into a thermocouple reactor equipped with a stirrer, a distillation column connected with a water-cooled condenser, a nitrogen inlet and a temperature regulator

    When heated to 130 ℃, 719.6 phr isophthalic acid and 2.5 phr n-butyltin trioctylic acid were added, and heated to 230 ℃, water was distilled from the reactor from 180 ℃, the acid value of the product was 34 mgKOH / g, the hydroxyl value was 3 mgKOH / g, and the viscosity was 2100mpa

    S (60 ℃) 2.1 phr, 4-cyclohexanedimethanol, 15.9 parts of trimethylolpropane, 591.3 parts of adipic acid and 2.5 parts of n-butyltin trioctate are added to a thermocouple reactor equipped with an agitator, which is connected to a distillation column connected to a water-cooled condenser, a nitrogen inlet and a temperature regulator

    Under the agitation of nitrogen, it is heated to 140 ℃, at this time, the water begins to distill and gradually heated to 220 ℃

    When the distillation stopped at atmospheric pressure, 1.0 parts of tributyl phosphite and 1.0 parts of n-butyltin trioctate were added, and 6.67 kPa vacuum was added gradually, and the reaction was carried out for 5 hours at 220 ℃

    The acid value of the product is 22mgkoh / g, the hydroxyl value is 3mgkoh / g, and the viscosity is 6500mpa

    S (220 ℃)

    80 parts of n-butyl acetate are added into a thermocouple reactor with a stirrer, a distillation column connected with a water-cooled condenser, a nitrogen inlet and a temperature regulator

    Heat and stir continuously while purging with nitrogen

    The mixture of 0.8 parts of tert butyl peroxybenzoate in 20 parts of n-butyl acetate was added in 215 min at 125 ℃

    After 5 min, 22 parts of styrene, 24 parts of glycidyl phenylmethylpropionate and 40 parts of methyl METHYLPROPIONATE were added

    The total reaction time was 315 min

    After steaming out n-butyl acetate, the ici200 ℃ viscosity of the acrylic acid copolymer is 1600mpa

    S 4

    The above products are added to the curing agent and the pigments and fillers for dry mixing

    Then, the products are melted and homogenized at 85 ℃ by twin-screw extruder, cooled, added to the grinder for grinding, and then the powder is screened and packed according to the particle size requirements

    Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.
    Related Articles

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent Echemi's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.