With our professional knowledge and commitment to the market, we position ourselves as a trusted business partner of our customers to meet customer needs by providing reliable and innovative Flame Retardent Zinc Borate, Zinc Borate 2335 400, 7 Crystal Water Zinc Borate. The reasonable price and considerate service of our products have won unanimous praise from our peers and customers in the industry. Our business philosophy has always been to make the best use of resources, to improve technology and to serve society. We conduct industry trend insights and build competitive advantages. With a high sense of social responsibility, we care for the environment, focus on society and create harmony.

Characteristics of MDI raw materials

MDI based products have lower isocyanate odour than similar TDI types and have superior hydrolysis resistance and often have higher resilience.

MDI products will have better wear life and softer hand feeling.

Operation Note

High NCO content leads to much higher heat release in the reaction process of MDI system than TDI system, so the shrinkage rate of MDI products is greater than that of TDI series products. (TDI: 1.5-2%; MDI: 1.8-2.4%).

Shrinkage law: The higher the hardness, the greater the shrinkage, and the larger the size, the greater the shrinkage.

The prepolymer of component A has high NCO content, high self-polymerization tendency and easy reactivity with water, and the prepolymer of component C BDO has high water absorption. Therefore, in order to ensure product quality and process stability in MDI production process, the raw material storage tank of pouring machine must be protected by nitrogen.

MDI chain extender is BDO with small equivalent, so its metering accuracy is higher than TDI. Generally, the metering accuracy is 3 ‰, which can ensure the stability of product quality.

Specifications

Our company has a complete one-stop production line of finishing, assembly, testing technology, and a group of high-quality professional and technical personnel, with the ability to develop new products, Surfboard Blank Foam, Surfboard Raw Material, Polyurethane or Polyester Machine are made of high-quality raw materials. Our company has always maintained the pace of continuous update and improvement of products, and constantly put high-quality products on the market. We effectively promote the institutionalization, standardization and standardization of all aspects of technology, safety and quality to truly improve the overall management level of the enterprise.

Hot Tags: mdi two componment polyester type casting pu, China, manufacturers, factory, buy, Polyether Based Casting Polyurethane Prepolymer, PU Square Pad, PTMEG Based Casting Polyurethane Prepolymer, PU Rubber Rod, PTMEG Type MDI System Polyurethane Elastomer, MDI System Casting PU Elastomer