The polyurethane screen is beautiful in appearance, bright in color, light in weight, high in mechanical strength, heat insulation, sound insulation, corrosion resistance and weather resistance, without secondary decoration. All kinds of colors. The tensile strength and tearing strength are high, the wear resistance is good, and the resilience is good. The compression technology can reduce the deformation of the permanent basic structure, and the service life of one is long.
It has strong adhesion with the metal material matrix, is not easy to delaminate and shed, and has high surface finish and stable size. The mesh of the invention is metal mesh, the mesh is polyurethane mesh, the polyurethane mesh is located below the metal mesh, and the mesh is in the form of sectional mesh. The warp and weft poles are composed of steel wire rope core and polyurethane surface layer structure. The utility model has the advantages that it is different from the ordinary metal screen.
The full name of polyurethane screen is polyurethane, which can produce formate. It is the general name of macromolecular organic binding compounds containing a large amount of Chinese data on the main chain and repeatedly using a carbamate group (NHCOO). It is composed of an organic diisocyanate or polyisocyanate and a dihydroxy or polyhydroxy compound obtained by addition polymerization.
As a kind of macromolecule, polyurethane can not only produce formic acid from carbamate, but also use ether, ester, urea, biuret, carbamate and other groups. According to the raw materials used, there can be different enterprise products, usually polyester and polyether. It can be used to produce hard and soft foam materials, adhesives and coatings for engineering plastics, rubber, fiber and plastics
Preparation source: polymer molecular compound formed by the main action of binary or multi-component isocyanate and binary or multi-component hydroxyl compound.
- inlaid type. 2. Bolt connection. 3. Bar connection. 4. Screen hook connection
As a bulk material, it can be used in fine screen and dry screen. It can also be directly used to treat some corrosive materials for grading.
The polyurethane screen has the following advantages: less repair work, less damage to the polyurethane screen, and longer service life, which can greatly reduce the amount of repair and loss of maintenance. The total cost is low.
Because the mesh planning is reasonable and the screen mesh manufacturing process is common, the limit size particles will not block the mesh. Because of the characteristics of polyurethane secondary oscillation, polyurethane screen has self-cleaning effect, so the screening power is good. Energy saving and consumption reducing, the proportion of polyurethane is small, which is much lighter than that of the same size steel screen. Then, the load of the screen machine is reduced, the power consumption is saved, and the life of the screen machine can be extended.
Polyurethane screen has a wide range of applications and strong professional applicability. Polyurethane screen is mainly used in metallurgy, nonferrous metals, pyrite, coal, chemical industry, building materials, hydropower engineering, building materials and other metal beneficiation, mining abrasive waste treatment, quarries and other industries. The production process of polyurethane screen determines that the product has regular pore shape, accurate pore size and high screening quality
The polyurethane screen has low working noise. According to the actual measurement, the noise of polyurethane screen used by the same screen machine is 5-20dB lower than that of metal screen, which greatly reduces the dust and makes the production site have a quiet and clean working environment.
The polyurethane screen is made of imported materials, with good elasticity and relaxation properties. At the same time, due to the high frequency vibration of the second harmonic wave of the screen bar, the hole plugging under dynamic conditions can be effectively avoided.