Three developments of stone protection agent development

Diamonds are favored for their long-lasting beauty. It can be seen that “permanent” is the foundation for “stone” to reflect its value. In recent years, the stone conservation industry has unlimited business opportunities and endlessly surrounds its surrounding products. According to the person in charge of MIYAKI Corporation in Japan, as an important “tool” for stone conservation, stone chemical protection agents have also undergone three stages of development. After absorbing the lessons of the failures of the previous two generations of protective agents, penetration protection agents have gradually achieved today. The results have become the current "protection" product of protective agents.

Looking back at history, the effect of the original stone protection agent was not satisfactory, and it also brought "sequel" to the stone.

The first generation of protective agent, paraffin, was also the earliest protective agent. Using a method of coating on the surface of stone, a dense wax film is formed on the surface of the stone, thereby blocking the intrusion of water, oil, dust and other dirt. However, the wax water completely blocks the pores of the stone, impedes the air permeability of the stone, so that the moisture inside the stone, the water at the bottom of the stone cannot be discharged normally, and water stains, wet marks, anti-alkali and the like are easily formed on the stone. ". In addition, the wax film is more viscous and susceptible to contamination, resulting in wax scale, more difficult to clean, the wear resistance of the wax film is also very poor, need regular waxing in order to maintain its luster, if often waxing in certain locations, will make The color of the stone in this area became darker, losing the texture of the original color, and the purpose of protection was changed to man-made destruction. Wax coating is easy to use only on the ground. It is very difficult to use it on the facade and upper floors. The more difficult is that once the wax penetrates into the interior of the stone, it will be difficult to remove unless the stone is polished away, which is time-consuming and laborious. economic. Therefore, wax is a "temporary" protective agent. With the gradual recognition of wax properties, wax has rarely been used as a stone protection agent. Due to the use of waxes, new stone “disorders” have emerged, and stone chemicals that are specifically used to remove waxes have also appeared—with the exception of waxes.

As people face the conservation industry, stone protection agents have gradually become the “new darling” of the conservation industry, but as a transitional product film coating protective agent can still not completely solve the problem.

The second generation of protective agent - non-permeable coating. This protective agent consists of colored and colorless series, which forms a dense protective film on the surface of the stone, so that the stone and the source of pollution are isolated, so as to achieve the purpose of anti-pollution, waterproof, and anti-oil.

Such products are generally dissolved or diluted with some organic solvents to extract protective agents, such as resin materials, silicones and so on. Compared with paraffin, its water resistance, stain resistance, longevity, and scope of use have been greatly improved, but air permeability is still poor, so that the water inside the stone and stone back can not be discharged, and easy to make the stone produce "lesions", and The chemical coating will also change the texture and color of the stone. In addition, the performance in the fight against ultraviolet rays, aging, durability, etc. is also not prominent, and the film is easy to wear, layering, falling off, need frequent repairs. Since the organic solvent used in such a protective product is volatilized to form a cured film layer, the volatile matter is toxic, the product is flammable, and it is easy to cause harm to people and environmental pollution during construction. Film coating protective agents have been used by some companies as quick protection products, but from a whole point of view, such protection agents are still used in some low-end products.

In view of the problems of the previous two generations of protective agents, experts in the industry have determined to develop new protective products that are more practical and usable. The protection of stone materials has also evolved from “inside and out” from the inside of the stone to fundamentals. Protective treatment.

The third-generation new-type infiltrating and infiltrating protective agent was successfully developed, completely solving the problems of previous air-proof protective agent and poor protection. Penetrating type protective agent is also the most widely used and most effective protective agent. The principle is to penetrate the organic material through the solvent to the surface and deep layer of the stone and form a protective film on the surface layer and deep layer, so as to achieve the purposes of antifouling, waterproofing, and oil proofing. The impregnating type protective agent and protective agent produced by Japan MIYAKI Corporation are among the best.

According to relevant experts, this new type of natural color protection agent is a very adaptable protective agent. It not only has outstanding effects, but also has its own unique features: Nano-grade solvent, can be infiltrated into the interior of stone within a range of 3 mm to 5 Millimeters, forming an all-weather protective layer, lasting protection of stone. Long-term protection of stone inhibits the weathering, deterioration, bleaching and rust of the stone surface. The stone is protected from acid, alkaline and other liquids and dirt. Greatly reduce the stone's water absorption rate, prevent cracks caused by the freezing of water inside the stone, improve the anti-fouling performance of the stone, inhibit the infiltration of dirt, dust and pollution can only float on the stone surface, reduce the daily cleaning workload and labor costs, save valuable Resources. It does not affect or damage the natural color and texture of natural stone and tile. Lasting protection can protect the substrate for 5 to 12 years.

It can be seen that the new type of penetrating and infiltrating protection agent can better solve the problem of stone lesions and prevent lesions from inside the stone. With the emergence of new types of protective agents, the “difficult diseases” of stone in the past are gradually being attacked by us. It is believed that under our joint efforts, the stone will continue to bloom “glorious” for a long time.