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Views: 8 Author: Site Editor Publish Time: 2021-01-19 Origin: Site
As a new coating material, polyurea has changed the concept and cognition of previous coatings by engineers and added new knowledge of coatings. Since the polyurea coating can withstand the full impact of a sledgehammer and the most severe abrasion, it also has satisfactory flexibility. When the obvious expansion and contraction causes concrete cracking or steel structure deformation, the coating film will not crack, even Under abnormal conditions such as outstanding pipelines and sinking, it can still cover the entire surface of the workpiece. Let's take a look at the detailed composition of polyurea spraying.
1. Polyurea spraying: It is an elastomer substance produced by the reaction of amino compound component and isocyanate component. Isocyanates can be both aromatic and aliphatic. The amino compound component in between can be monomers, polymers, isocyanate derivatives, prepolymers and semi-prepolymers.
2. Prepolymers and semi-prepolymers are made by reacting amino-terminated or hydroxyl-terminated compounds with isocyanate. The R component must be composed of an amino-terminated resin and an amino-terminated chain extender. The amino-terminated resin must not contain any hydroxyl components and catalysts, but can contain additives that facilitate the dispersion of the pigment.
Recently, Jining Bureau of Industry and Information Technology announced the list of municipal-level "Specialization, refinement, specialization, novelty" small and medium-sized enterprises in 2022. Shandong Hightop Group passed the expert review and was selected as a "Specialization, refinement, sp
All family members:According to the national statutory holiday regulations and the actual situation of the company, the following arrangements are now made for the May 1st Labor Day holiday: 1. April 30th ( Saturday ) - May 4th ( Wednesday ) , a total of 5 days off ;April 23 morning (Saturday), Apri
In 2021, despite the more complicated international situation, with the spillover of China's manufacturing capabilities and comprehensive national strength, the scale of my country's cross-border e-commerce will reach 1.98 trillion yuan, out of a high growth rate of 15%, and usher in a historical di
The electric sprayer has the advantages of simple structure, convenient operation, few failures, easy maintenance, low price, stable pressure, long operation time, wide application range and so on. There are many herbicide formulations, and different formulations have different formulation methods.
1. Unique impermeability:Rigid foam is a dense microcellular foam with a closed cell rate of more than 92% and a smooth self-skin. It is an excellent anti-seepage material.The rigid foam layer has no joints and is completely impermeable to water, which fundamentally eliminates the possibility of roo
Problems that should be paid attention to before and after use of polyurea spraying equipment:First of all, after spraying every day, or when changing the variety of spraying materials, the residual materials of spraying equipment and conveying pipelines should be removed, preferably once a day. The
As the name implies, with the rapid development of China's building energy saving market, polyurethane spraying equipment has been widely used in the field of building insulation and waterproofing, and the demand is increasing.
With the pace of green and civilized city construction, more and more attention is paid to the treatment and disinfection of domestic waste.1. The methods of garbage disposal, especially the methods of sorting and reusing garbage, have also appeared one after another, and gradually entered the ranks
Polyurea spray material is a new type of polymer material. Since this material has many different forms, and different forms of polyurea sprayers have many different characteristics, polyurea spray materials are widely used in contemporary society and industrial production.As the thermal insulation
All family members: According to the regulations of national statutory holidays and the actual situation of the company, the following arrangements will be made for the Spring Festival holiday in 2022: 1. There will be a 9-day holiday from January 29 (Saturday) to February 6 (Sunday); the prod
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