Learn about rock wool through an article
TECH Shenzhou Group
A professional manufacturer & exporter for thermal insulation and cold insulation products since 1994 in China.
The production process of rock wool is actually a simulation of the natural process of Hawaii volcanic eruption. Basalt and dolomite are used as the main raw materials. After being melted at a high temperature of more than 1450 degrees Celsius, the four-roller centrifuge is used for high-speed centrifugation to form fibers. At the same time, a certain amount of binder, dust prevention oil and water repellent are sprayed into the rock wool, which is collected by the cotton collector, and then rolled, solidified and cut through the pendulum method process and three-dimensional method after cotton laying, Rock wool products with different specifications and uses are formed.
According to the form of finished products, it can be divided into: rock wool board, rock wool felt, rock wool strip, rock wool pipe shell, rock wool blanket, rock wool bulk cotton, rock wool gel cotton, granular rock wool, etc;
According to fire resistance, it can be divided into: ordinary rock wool and black fireproof rock wool;
According to mechanical strength, it can be divided into ordinary rock wool and hard rock wool;
It can be divided into ordinary rock wool and hydrophobic rock wool according to whether the hydrophobic agent is added;
According to whether there is an outer covering, it can be divided into: rock wool without outer covering and rock wool with outer covering;
According to the use, it can be divided into: curtain wall thermal insulation rock wool, curtain wall fireproof rock wool, exterior wall rock wool, roof rock wool, indoor partition rock wool, and equipment thermal insulation rock wool
领英推荐
The reason why rock wool can keep warm is that the rock wool fiber inside the rock wool products is very thin and numerous, and the fibers are staggered, which confines the air in them into small air pockets. The rock wool fiber has low thermal conductivity, and its resistance to air flow is great, so the air can hardly flow in it, so it loses the ability of convective heat transfer, while the static air insulation performance is very strong, Thus, rock wool products have excellent thermal insulation performance.
Rock wool is a kind of porous sound-absorbing material. Because of its open structure and rough surface, it also has a large number of tiny pores and holes connected inside and outside. When sound waves are injected into rock wool, sound waves can enter the material along the pores, causing the vibration of air molecules in the pores. Because of the viscous resistance of air and the friction between air molecules and the pore wall, that is, the surface of rock wool fiber, the sound energy is converted into heat energy and lost, thus the sound energy is greatly attenuated, so the rock wool has good sound absorption performance.
Rock wool is an environmental protection material because it is composed of inorganic and chemically stable rock wool fibers, which do not burn and do not volatilize toxic substances. The curing agent used for rock wool uses phenolic resin or acrylic resin as the curing agent, or the environment-friendly rock wool using biomass curing agent. Its formaldehyde emission meets the national standard requirements for environment-friendly building materials, so the rock wool that can normally leave the factory and the qualified rock wool products are environment-friendly materials. However, if the rock wool using phenolic resin and acrylic resin curing agent fails to be fully dried during the heating and curing process, free formaldehyde or benzene series and acrylic acid and other harmful components will volatilize during the use process, which is not environmentally friendly.
In short, it is better to purchase qualified rock wool, which has been tested by a professional organization to be free of asbestos, CFC, HFC, HCFC and other substances harmful to the environment, and will not be corroded or produce mildew and bacteria.
If you do not have professional testing instruments, you can ask the supplier to provide a third-party certified testing certificate.
For more production videos and professional knowledge of rock wool, glass wool, rubber and plastic, welplease pay attention to us for more information.