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Views:5 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.
Smaller size urethane foaming machine is a device for infusion and foaming of polyurethane foam and plastic. As long as the performance indicators of the polyurethane component raw materials (isocyanate component and polyether polyol component) meet the requirements of the formula. Passing through t
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1. Site selection skills The location of the thermal insulation house of the breeding farm should be a place with a leeward wind and sunny, high terrain and dry soil. 2. Alternative insulation materials for the insulation room of the farmExtruded polystyrene foam (extruded board), molded polystyr
What are the classifications of high-pressure mixing spraying machinery for thermal insulation materials1. The important role of the on-site polyurethane high-pressure mixed foam external wall insulation systemPolyurethane rigid foam external wall insulation system is a kind of external wall insulat
is mostly used in building boards and insulation walls, mainly for heat preservation and waterproofing. The equipment used to complete the polyurethane foaming process is a polyurethane high-pressure foaming machine.The overall layout of the polyurethane foaming machine fully considers the use of sp
For many new products and technologies, only those that have passed theoretical and practical tests are worth recommending. The same is true for polyurethane products. It is recommended that you weigh the relationship between price and value when purchasing polyurethane products. The self-discipline
Polyurea as a new type of environmentally friendly spraying Compared with traditional environmentally friendly coating technology, spraying polyurea elastomer technology has the following advantages:1. It does not contain catalyst, it cures quickly, and can be sprayed on any curved surface, inclined
