foreword
Specular light selectivity is an appearance property of plastics, the property that an incident light beam is specularly reflected and brightly visible on its surface. It is also an optical property that is as important as haze, light transmittance, and color. As we all know, plastic specular gloss properties have been widely used in packaging and construction fields. For example, clothing, candies, handicrafts, calligraphy and paintings, etc. are extraordinarily gorgeous and valuable because they are packaged with plastic films or other plastic products with excellent mirror gloss properties. Similarly, plastic furniture, doors, windows and other profiles with different mirror gloss are gradually meeting people's needs for life.
As early as the 1930s, foreign countries have applied the test of mirror light selection to the coating, paint, paper, cardboard, and porcelain industries. In the 1970s, the United States, Germany, Britain, France, Japan and other countries have generally paid more attention to the testing of plastic mirror gloss. At the end of the 1980s, my country had a national standard for the test method of plastic specular gloss, but it was not widely used. So far, many enterprises and other units still rely on experience and visual inspection, which makes it difficult to guarantee the appearance quality of products—mirror gloss, and even affects product sales. Therefore, in order to meet the needs of the development of the domestic and foreign situation, in order to ensure the quality of the product, improve the grade, and create economic benefits, it is necessary to strengthen the test of plastic mirror gloss. This article briefly introduces the introduction of plastic mirror gloss test, the choice of test method and the influencing factors of plastic mirror gloss.
