Acrylic itself is transparent, no color, but in order to meet people's diversification of acrylic products
Therefore, there are different colors of acrylic products. When using acrylic products, it will be guided for various reasons
Cause fading, which is mainly the fading of acrylic products and pigment light resistance, oxygen resistance, heat resistance, corrosion resistance
And other factors, next and PG Xiaobian together to understand it.
1. Light resistance of colorant
The light resistance of the colorant directly affects the fading of the product, and the outdoor products subject to direct sunlight are commonly used as colorants
The light resistance (sun resistance) level is an important indicator value, light resistance and other poor, products in the application will quickly fade
Color. The light resistance level of weather-resistant products should be no less than six levels, and seven or eight levels should be used as far as possible, and indoor products are optional
Level four and five.
2. Heat resistance
The thermal stability of heat resistant pigments refers to the degree of thermal weight loss, discoloration and fading of pigments at the processing temperature.
The composition of inorganic pigment is metal oxide, salt, good thermal stability, high heat resistance. And organically combined
At a certain temperature, the molecular structure of the pigment will change and a small amount of decomposition. Especially PP, PA, PET
Products, processing temperature above 280℃, in the selection of colorants on the one hand to pay attention to the heat resistance of the pigment, on the one hand
Considering the heat resistance time of the pigment, the heat resistance time is usually required to be 4-10min.
3. Anti-oxidation
Some organic chemical pigments slowly dissolve biomacromolecules or produce other changes after air oxidation
Fading, the whole process is one of high temperature air oxidation in production and processing, and the other is oxidizing agents (such as iron oxide yellow)
Chromate) produces air oxidation. Color lake, formamide pigment and iron oxide yellow mixed application, red will slowly
Reduce.
4. Corrosion resistance
Colored acrylic products of fading and colorant chemical resistance (corrosion resistance, resistance to oxidation)
close. Such as molybdenum chromium red is resistant to dilute alkali, but more sensitive to alkali, cadmium yellow is not acid resistant, these two pigments and phenolic resin
Some colorants have a strong oxidation effect, which seriously affects the heat resistance and weather resistance of colorants and causes fading.
For the fading of acrylic colored products, PG is strictly in accordance with the processing conditions and use of acrylic products
Requirements to perform, on the required pigments, dyes, surfactants, dispersants, carrier resins and anti-aging AIDS
The above performance can be selected after comprehensive evaluation, so we want to order color acrylic products, welcome to contact
PG.
https://www.pgacrylic.com
