Q:Is it a vacuum cup with fluorine coating that affects the health?

Does not affect the health, only in the temperature of more than 200 degrees will be long life of harmful substances.

Q:There are several appearances of the quality defects of ordinary flat glass

The wave bar, also called the water line, is the most vulnerable and the most serious defect in the appearance defects of glass. It can cause optical distortion of glass and cause visual fatigue or visual illusion of the observer. There are many reasons for the wave reinforcement, mainly due to the backward production process and chemical composition and excessive impurity content.

Q:There are several ways of heating the industrial drying tunnel furnace and are different from each other?

Product features:1., small size, high power: the electric heater mainly uses the cluster type tubular heating element, the maximum power of each cluster type tubular electric heating element is 5000KW.2. thermal response fast, high temperature control accuracy, high comprehensive thermal efficiency.3., wide range of applications, adaptability: the cycle heater can be applied to explosion-proof or ordinary occasions, its explosion rating up to B and C class, its pressure up to 20Mpa. The cylinder can be installed vertically or horizontally according to user needs.4., high heating temperature: the heater design maximum operating temperature of up to 850 degrees, which is generally can not get the heat exchanger.5. fully automatic control: through the heater circuit design, it is easy to realize the export temperature, pressure, flow and other parameters automatic control, and can be networked with the computer, to achieve man-machine dialogue.

Q:Glass fiber reinforced plastic (FRP) is a new type of composite material. What is the raw material?

The first type of glass fiber reinforced plastics is a composite of glass fiber and phenolic resin. It is a glass fiber impregnated with phenolic resin liquid raw material, after molding, pre molding, and then the phenolic resin curing, made of glass fiber reinforced plastic. Corrosion resistance and long service life. Glass fiber reinforced plastic is a kind of high-quality composite material. It has a special anti-corrosion function for acid, alkali, salt, oil and other corrosive media, and will not rust. The average PVC life is 15 years, while the glass steel life is 50 years.

Q:The difference between glass wool, rock wool, mineral wool

Glass wool belongs to a kind of glass fiber, it is a kind of man-made inorganic fiber. Glass wool is the molten glass fibrosis, the formation of cotton like material, chemical composition of glass, is a kind of inorganic fibers. With good forming, small volume density, thermal conductivity, both thermal insulation, sound-absorbing performance, corrosion resistance, chemical stability.

Q:A fireproof material is? Except glass wool, rock wool? Please tell me what is the raw material of these materials is?

Phenolic insulation board is based on phenolic resin and flame retardant, anti smoke agent, a variety of material, curing agent, foaming agent and other additives, closed cell rigid foam made by scientific formula. The most prominent advantage is fireproof and insulation.

Q:What's the difference between heat resistant glass and tempered / reinforced glass?

Resistance to cold shock resistance, thermal shock test by 120 DEG C, the temperature difference of 200 degrees changes without deformation, has a very low coefficient of thermal expansion, so the anti blast temperature is not easy to deform and explode, has good thermal stability, impact resistance. High chemical stability and mechanical properties.

Q:How to distinguish between good and bad glass fiber reinforced plastic?

High quality glass steel products appearance has no obvious cracks, pores are less pure, bright color, good transparency, toughness has a certain strength, good surface smoothness, long service life; while the poor quality of the glass steel product surface crack, more pores, mixed color gloss is not enough. Its service life is also short.

Q:What is the raw material of glass?

It can be made into various shapes by moulds. The irregular structure of glass determines the following characteristics of glass:1. isotropic particles of glass are arranged irregularly in general, but are statistically uniform, so that their physical and chemical properties are the same in any direction. The crystal is anisotropic. Examples: resistivity, thermal conductivity, transmissivity, refractive index, etc..2. there is no fixed melting point. Glass changes from solid to liquid and varies gradually over a range of temperatures. The crystal is determined by melting point, for example, (water ice crystals) in C melt 0 Eve joy. This property of glass makes it possible to be shaped by blowing, pulling, pressing, and other methods.3. tunability of composition and properties. The properties of the glass may vary continuously and gradually within a certain range with their properties. The crystal has a fixed component and a definite performance. In this way, we can adjust the composition of the glass, so that its performance meets the requirements of the use.

Q:The use of quartz sand

Quartz sand is quartz quartz stone crushing processed. Rock (quartz), also known as silica, is a hard, abrasion resistant and chemically stable silicate mineral. In nature, quartz sandstone, quartzite and quartz quartz exist. Quartz sandstone is a consolidated clastic rock with a quartz content of more than 95%,