Can artificial marble also whiten?
When it comes to the artificial whitening of white marble, many people think that artificial marble belongs to stone. The whitening agent can't be added and there is no whitening effect. But this is not the case. There are already many artificial marble manufacturers to witness the use of artificial marble. Fluorescent whitening agents are very effective and have been produced in large quantities. Today, I will talk to you about the role and usage of fluorescent whitening agents in artificial marble.
Traditional artificial marble countertops are usually made of acrylic resin and aluminum hydroxide, which have certain toughness and hardness. The material is corrosion-resistant, light-resistant, and can be made into various shapes under high temperature conditions. The aging process is very slow, the product has a long service life, and has the advantages of being non-toxic and harmless, and not discoloring. With the development of modern construction, the requirements for lightweight, high-strength, beautiful and multi-species are put forward for decorative materials. Many marble manufacturers add fluorescent whitening agents for artificial marble to improve the appearance and quality of the products.
Artificial marble is made of natural marble or granite gravel, which is made of cement, gypsum and unsaturated polyester resin as a binder, stirred, ground and polished. However, the current market is fiercely competitive. In order to pursue high profits, some manufacturers will not hesitate to reduce the quality of the products. Originally, aluminum hydroxide should be added to the resin. However, due to the high cost of aluminum hydroxide, they add calcium powder to the surface, namely calcium carbonate. . Since calcium carbonate is not stable enough, it is very susceptible to chemical reactions when it encounters hot acid. For normal acrylic sheets, the resin content should be 35 percent. Only when the resin reaches a certain ratio, the sheet will have better toughness. After the addition of calcium powder, the artificial stone plate becomes fragile, easily cracked and deformed, and is prone to yellowing. Therefore, it is inevitable to add fluorescent whitening agent. Many manufacturers will choose to add artificial fluorescent whitening agent RQT-A-5, because the addition amount is small and the cost is low, and the practical effect is better.
RQT-A-5, a special fluorescent whitening agent for artificial marble, is a kind of whitening effect and environmental protection additive. It is used in artificial marble and has high weather resistance grade, heat resistance, light fastness, fade resistance, whitening and increase. Bright, brightening performance is remarkable! The addition method is also convenient. In the processing agitation molding or grinding process, the whitening agent is directly mixed with the raw material or the whitening agent is added to the grinding process together with other solvents. The amount of RQT-A-5 added is 0.01-0.05% (10-50g per 100kg). The user will adjust accordingly according to the raw materials. It is better after small test, pilot test, mass production and stability. .