PVC: Fire protection applications and preparation methods of polyvinyl chloride
PVC, or polyvinyl chloride, is a common polymer with excellent flame retardant properties, and its flame retardant value can be as high as 40 or more. Among various materials, PVC is preferred for its fire-resistant properties. This article will delve into the application of PVC in the field of fire protection and the preparation methods of related PVC paste polymers and basic lead carbonate.
PVC paste polymer :
PVC paste polymer is a branch product of polyvinyl chloride resin, named after its highly dispersible powder used in paste processing. This polymer is known for its excellent paste-forming properties and good dispersion, and is mainly used in the soft material field of PVC resin. PVC paste polymers in soft materials have excellent adhesion and can adhere firmly to various surfaces, so they are widely used in making flexible PVC products.
Suspension polymer PVC :
Suspension polymerized PVC is a loose resin. This loose resin has good oil absorption, dry fluidity, easy plasticity, and short molding time, making it very convenient in the production of PVC products. It is often used as a basic raw material for the molding of PVC products because it can be processed directly into powder and shows good performance in processing operations. This makes manufacturing PVC products more efficient and economical.
Basic lead carbonate :
Basic lead carbonate, also known as lead white, has the chemical formula 2PbCO3·Pb(OH)2. However, it is important to note that basic lead carbonate is toxic and must be used with caution. It is often used in the field of fire protection because of its excellent fire protection properties. However, to ensure its safe use, relevant operating procedures and safety measures must be followed.
Preparation :
Preparing basic lead carbonate usually involves the following steps:
Add the raw materials into the high-speed disperser according to the predetermined ratio.
Under high-speed stirring conditions, mix and evenly disperse the raw materials.
Subsequently, the mixed slurry is put into a sand mill and processed to the required fineness through grinding and dispersion.
This preparation process requires careful control of the ratio of raw materials and the mixing process to ensure high-quality basic lead carbonate.
Application scope :
PVC paste polymers and basic lead carbonate are widely used in the field of fire protection. Among them, PVC paste polymer is usually used for fire protection treatment of coal mine ventilation ducts. This paste adheres to the surface of the pipe and provides additional flame retardant properties, thereby enhancing the fire safety of the pipe. In addition, it can also be used as a paste for the walls of the mining area, further improving the overall fire protection level of the mining area.
In short, the application of PVC and related products in the field of fire protection is of great significance and helps to improve the fire safety of various facilities and materials. As science and technology continue to advance, we can expect that the performance of these fireproof materials will continue to improve, providing stronger fire protection for our social and economic activities. However, safety regulations must be strictly followed when using these materials to ensure the safety of people and the environment.
