Reinforcing mesh is also called welded steel mesh, steel welded mesh, steel mesh, and so on. Reinforcing Mesh,Reinforcing Mesh For Construction Site,Galvanized Reinforcing Mesh For Construction,Welded Mesh Reinforcing Mesh Anping County Dongjie Wiremesh Products Co., Ltd. , https://www.dongjiewiremesh.com
Reinforcing mesh can be translated as Reinforcing Mesh For Construction Sites, Galvanized Reinforcing Mesh For Construction, Welded Mesh Reinforcing Mesh
It is a kind of metal mesh made of longitudinal and transverse steel bars crossed by binding or welding.
Steel mesh has many advantages, among them, because of the high mesh height, good elasticity and uniform spacing, the steel bars are not easy to be bent locally when pouring concrete, the thickness of the concrete protective layer is easy to control and uniform, and the quality is very high. At the same time, its mechanized operation can save a lot of time.
Due to the use of low-carbon high-quality materials as raw materials, it has a unique flexibility that ordinary iron sand mesh does not have, which determines its plasticity during use. It can be widely used in the fields of floor slabs, house wall structures, pavement wall prefabricated components and so on.
As mentioned above, the black medicine is obtained by the action of alcohol or phenol and phosphorus pentasulfide . The reaction is as follows:
S
/
P 2 S 5 + 4ROH—→2(RO) 2 P—SH+H 2 S
Alcohol or phenol black medicine
But the following reactions will also occur simultaneously:
S
/
P 2 S 5 + 2ROH —→(RO) 2 —P—SH+HPS 3
Alcohol or phenol
S
/
HPS 3 +2ROH —→ (RO) 2 —P—SH+H 2 S
When the reaction temperature is too high, the two-molecule acid black medicine will remove one molecule of H 2 S, and become a thiophosphoric anhydride derivative. For example, when the cresol black medicine is at 150 ° C or higher, the hydrogen sulfide will be dehydrated as follows:
When the temperature reaches 250 to 300 ° C, it will be decomposed into thiophenol. Therefore, when manufacturing black medicine, it is necessary to take appropriate reaction conditions depending on the type of black medicine produced.