How to effectively improve the stability of polyurethane materials
Polyurethane (PU for short) is a polymer made of a polyisocyanate and a polyether polyol or a polyester polyol or/and a small molecular polyol, a polyamine or a chain extender such as water or a crosslinking agent. By changing the type and composition of the raw materials, the shape and performance of the product can be greatly changed, and the final product from soft to hard can be obtained. Polyurethane products are available in soft, semi-rigid and rigid foams, elastomers, paints, adhesives, sealants, synthetic leather coating resins, elastic fibers, etc., which are widely used in automobile manufacturing, refrigerator manufacturing, transportation, civil engineering. Construction, footwear, synthetic leather, fabrics, electromechanical, petrochemical, aerospace, medical, agriculture and many other fields. The material branch of a multinational chemical and chemical enterprise is looking for a synthetic optimization scheme for polyurethane to obtain a stable suspension end product with as small a particle size as possible. The experiment requires a good dispersion state during the synthesis of the polyether polyol mixture and the polyurea particles. The experiment was carried out by first dropping the substrate with two different mixtures using a dropping funnel while stirring, and turning on the T25 disperser to maintain high-speed dispersion. The required temperature must not exceed 40 ° C throughout the process. In order to ensure that the temperature of the sample does not rise too much in the long-term high-speed operation of the disperser, we use IKA's latest CBC heating and cooling circulator to maintain the temperature of the sample through the jacket heat conduction. After several hours of reaction, the undesired single molecules and bubbles are evacuated by a vacuum pump to finally obtain a product. The IKA LR2.ST laboratory reactor satisfies the requirements of the above experiments. Stirring, dispersion, dripping, heating, cooling and vacuum integration. The powerful Eurostar 200 controlled overhead mixer is slightly viscous for customers. The products are handled comfortably, and the control panel can be removed for remote control outside the fume hood to protect the operator from the taste of the sample. After testing, the customer obtained a better and more stable product than the previously dispersed and re-reacted process, and the particle size was controlled within 10 microns, and the effect was satisfactory. IKA LR2.ST laboratory reactor Stable and delicate polyurethane end product About IKA ( ) IKA Group is the market leader in pre-laboratory , calorimetric analysis , mixed dispersion industrial technology . Magnetic stirrers , overhead stirrers , dispersion homogenizers , mixers , constant temperature shakers , grinders , rotary evaporators , Heating plates , constant temperature circulators , calorimeters , laboratory reactors and other related products constitute the product line of IKA laboratory analysis , while industrial technology mainly includes mixing equipment for mass production , dispersing emulsification equipment , kneading equipment , and Try to expand the production of the complete solution . The group is headquartered in Staufen, southern Germany , with subsidiaries in the United States , China , India , Malaysia , Japan , South Korea, Brazil and other countries . IKA was established in 1910, IKA Group now can proudly look back over the past 100 years. Fat Dissolving Injectable Lipolytic Solution Fat Dissolving Injectable Lipolytic Solution,Fat Dissolving Meostherapy Injection,Fat Dissolving Serum,Ppc Solution Injection Jiangsu Tiera Biotechnology Co., Ltd , https://www.tierabio.com
