Isocyanate water absorbent is a widely used chemical substance in industrial production, and its main characteristics and applications can be summarized as follows:
1、 Definition and Properties
Isocyanate water absorbent is a colorless or pale yellow liquid with a strong pungent odor. It is one of the important raw materials for producing polyurethane waterproof coatings, with good weather resistance, wear resistance, and excellent bonding performance. Isocyanate water absorbing agents are mainly used in the industrial production of polyurea elastomers, acrylamide styrene butadiene rubber, etc.
2、 Main performance indicators
Chemical and thermal stability: Isocyanate water absorbing agents have excellent chemical and thermal stability.
Water absorption: This water absorbing agent can absorb and store a large amount of water, and the specific water absorption capacity varies depending on the product, generally between 5-10% (m ²/s).
Physical state: Some isocyanate water absorbing agents appear in the form of white powder.
Melting point and temperature resistance: The melting point is approximately 230 ° C, and it has good temperature resistance and can work stably in an environment of 80 ° C.
Relative density: generally 1.05gcm ³.
3、 Application Fields
Coatings and Waterproofing: Isocyanate water absorbent is the main raw material for polyurethane waterproof coatings, which can form a continuous and dense overall waterproof film, with excellent chemical resistance, good anti leakage performance, and high elongation.
Industrial manufacturing: In the industrial field, isocyanate water absorbing agents are widely used in industries such as papermaking, coatings, textiles, plastics, etc. For example, it can be used as a solvent in the paint and ink industry, a vulcanizing agent and reinforcing agent for synthetic rubber, etc.
Pharmaceuticals and Chemicals: Isocyanate water absorbing agents are also used in the production of various alcohol compounds, dye intermediates, and pharmaceutical industries.
4、 Safety precautions
Toxicity: Isocyanate water absorbing agents have strong irritants, which may cause discomfort symptoms such as stinging, redness, and heat sensation in the skin, eyes, and other areas. Long term exposure or ingestion may also lead to damage to internal organs such as the liver and kidneys.
Flammability: Isocyanate water absorbing agents are flammable and explosive, and can easily ignite when exposed to open flames, high heat sources, or oxidants.
Corrosivity: It has strong corrosiveness to the human body and objects, and direct contact with eyes, skin, mucous membranes, etc. can easily lead to serious consequences such as burns and scalds.
Therefore, when handling, storing, transporting, and using isocyanate water absorbing agents, it is necessary to strictly comply with relevant safety operating procedures and preventive measures, especially paying attention to personal safety protection.
