根据用途有时需要半光或无光的粉末涂料。为了降低涂膜光泽，常用的消光剂有超细二氧化硅、滑石粉、硬脂酸铝、硬脂酸钙、低分子热塑性树脂等。要得到消光效果，可以采用如下方法：
Semi gloss or matt powder coatings are sometimes required depending on the application. In order to reduce the gloss of the film, the common matting agents are ultrafine silica, talcum powder, aluminum stearate, calcium stearate, low molecular thermoplastic resin, etc. To obtain the extinction effect, the following methods can be used:
a、将固化速度不同的粉末涂料，用干混合法进行混合，那么所得涂膜的光泽明显下降，起到消光作用。
a. When the powder coatings with different curing rates are mixed by dry mixing method, the gloss of the coating film decreases obviously and plays a matting role.
由于反应活性高的粉末涂料迅速固化，使连续相的固化较慢的树脂流平和反应受到阻碍，最终固化涂膜失去光泽。虽然这种方法有效，但增加制造工序和成本。
Due to the rapid curing of powder coatings with high reactivity, the leveling and reaction of resin with slow curing of continuous phase are hindered, and the final cured film loses luster. Although this method is effective, it increases the manufacturing process and cost.
b、添加热塑性树脂。
b. Add thermoplastic resin.
在环氧粉末涂料中添加醋酸纤维素，在聚酯粉末涂料中添加细粉末状低分子量聚乙烯、聚丙烯树脂可以得到消光粉末涂料。涂膜光泽受制造条件的影响。因为热塑性树脂的添加，将影响粉末涂料的贮存稳定性，所以添加量限于树脂量的2—3%。
The matting powder coating can be obtained by adding cellulose acetate into epoxy powder coating and fine powder low molecular weight polyethylene and polypropylene resin in polyester powder coating. The gloss of the film is affected by manufacturing conditions. Because the addition of thermoplastic resin will affect the storage stability of powder coatings, the addition amount is limited to 2-3% of the resin content.
c、用有消光作用的特殊固化剂。
c. Use special curing agent with matting effect.
d、添加有消光作用的填料。
d. Add fillers with matting effect.
添加超细二氧化硅、滑石粉等填料使光泽显著下降。特别是填料的粒度对涂膜光泽有很大影响。粒度越大光泽越低。要注意的是增加填料的用量，会使涂膜的平整性和机械强度下降。在环氧粉末涂料中，碳酸钙粒度对涂膜光泽的影响见表。在丙烯酸、聚酯粉末涂料中添加超细二氧化硅和高岭土能得到消光涂料。除此之外，添加聚乙烯石蜡、氢化蓖麻油等蜡状物也能得到消光涂料。 涂料消光原理及其应用
The addition of fillers such as ultra-fine silica and talcum powder can significantly reduce the gloss. In particular, the particle size of filler has a great influence on the gloss of the film. The larger the particle size, the lower the luster. It should be noted that the smoothness and mechanical strength of the film will be decreased by increasing the amount of filler. In epoxy powder coatings, the influence of calcium carbonate particle size on the gloss of the film is shown in the table. The matting coatings can be obtained by adding superfine silica and kaolin into acrylic and polyester powder coatings. In addition, the matting coating can also be obtained by adding paraffin such as polyethylene paraffin and hydrogenated castor oil. Principle and application of coating matting
近几年以来，我国的涂料工业方兴未艾，涂料总产量也跃居世界的前列，形成了一个与此相关的产业群体，积极推动着传统涂装领域的技术革命和发展。在这期间高光泽的亮光涂料以其色泽鲜艳、明亮等优点深受消费者的喜爱，并在相当长的时间内一统着涂料市场。但是，随着人们生活水平的不断提高，一方面消费者感觉到了高光泽的亮光涂料成膜后反光比较严重，对人的眼睛有害；另一方面消费者的审美观念越来越倾向于休闲、时尚和个性化。再加上我国汽车和家电行业蓬勃发展的需求。这些因素就导致了人们对具有柔和外观的低光泽涂料的需求急剧增加。同时，也使得如何生产具有消光性能的涂料成为涂料设计师们必须考虑的问题。
In recent years, China's coating industry is in the ascendant, and the total output of coatings has also leapt to the forefront of the world, forming a related industry group, and actively promoting the technical revolution and development of traditional coating field. During this period, the high gloss bright coating was loved by consumers because of its bright color and bright color, and dominated the paint market for a long time. However, with the continuous improvement of people's living standards, on the one hand, consumers feel that the reflection of high gloss bright paint is serious after film-forming, which is harmful to people's eyes; on the other hand, consumers' aesthetic concept is more and more inclined to leisure, fashion and personalization. In addition, China's automobile and home appliance industry is booming. These factors lead to a sharp increase in the demand for low gloss coatings with soft appearance. At the same time, how to produce coatings with matting properties has become a problem that must be considered by coating designers.