How to choose a kitchen granite sink？

There are various kinds of granite sinks on the market, some are called quartz sinks, and some are called composite sinks. How do we choose a sink that is safer, more environmentally friendly, and has more stable performance?

Granite sinks are made of quartz sand or granite particles mixed with resin in a certain proportion. Among them, there are two main categories of resins. The first category is acrylic PMMA. The second category is the unsaturated UP category.

The first type of PMMA is a non-toxic and environmentally friendly material that can be used to make dentures. Its safety level is the highest.

It can be used to produce tableware, sanitary ware, etc. It has good chemical stability and weather resistance.

In addition, PMMA is currently the best polymer transparent material, with a light transmittance of 92%, which is higher than that of glass. Therefore, PMMA granite sinks have a beautiful appearance and texture;

PMMA has high strength, good toughness, impact resistance, not easy to fade, good temperature resistance, and corrosion resistance;

PMMA is combined with high-hardness quartz sand to produce a sink that has high hardness, excellent wear resistance, and good toughness, and can resist scratches and cracks;

The second category is unsaturated resin UP category.

Unsaturated resin refers to a polymer compound containing unsaturated double bonds generated by the polycondensation reaction of dibasic acid and dihydric alcohol. . The content of styrene as solvent is about 20%-40%.

During the production process, unsaturated resin and quartz sand are mixed, and a curing agent is added. The cured sink product still contains a certain amount of residual vinylene. Especially when encountering high temperatures, such as hot water, a pungent smell will be produced, which is caused by the volatilization of stupid ethylene. If you are exposed to it for a long time or inhale too much at one time, it may cause many harms to the human body. Common ones include irregular menstruation in women. For men, there are also serious reproductive toxicity, which can cause damage to the function of spermatogenic cells, thus Cause reproductive dysfunction.

In addition, long-term inhalation of styrene can also cause neurasthenia, headache, fatigue, dizziness, nausea, forgetfulness and other symptoms. Studies have shown that styrene may cause liver and kidney weight loss, so patients with liver and kidney dysfunction need to be careful in using products containing styrene in their daily lives.

The production process of PMMA type granite sink is very complex and must use steel mold thermosetting process. Its quality is the best among all composite sinks, and the cost is also the highest.


For the health of you and your family, please choose PMMA type granite sink.