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Views:8 Author:Site Editor Publish Time: 2020-12-30 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, and at the same time has satisfactory flexibility, the coating film will not crack even if the obvious expansion and contraction causes the concrete cracking or the steel structure deformation. 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.
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Polyurethane foaming machine is widely used in multi-mode continuous production of rigid and semi-rigid polyurethane products, such as: petrochemical equipment, directly buried pipelines, cold storage, water tanks, meters and other thermal insulation and sound insulation equipment and craft products
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 obv
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There are many kinds of fillers used in polyurethane rigid foam, such as expanded graphite, powdered nylon, silica, glass fiber, etc. The filler used in polyurethane foam must be dried before use. When applied to a water foaming system, its moisture content must be measured.
1. The company's equipment has passed CE, ISO9001 quality management system certification, completely independent intellectual property design and production, has declared a number of national invention patents.2. The equipment is small in size, light in weight, low in failure rate, convenient to mo
The key to the construction quality of spraying polyurea lies in the substrate, and the substrate is divided into two types: metal substrate and concrete substrate, but no matter which kind of substrate, we must consider its anti-corrosion and waterproofing. So, what are the ways to deal with the an
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Polyurea spraying equipment is a highly reactive and pollution-free spraying technology developed in the past 20 years abroad. Its excellent physical and chemical properties, excellent manufacturability and environmental protection fully show its unparalleled superiority over traditional protection
