The granulator company continues to improve and innovate to usher in a good development space
Casting polyurethane prepolymers involves a process where a liquid mixture of polyols and isocyanates is poured into a mold or container and allowed to cure or solidify. This process is commonly used in various industries such as automotive, construction, and manufacturing. Polyether Polyurethane Prepolymer,Cpu For Elastomers,Polyseter Prepolymer For Ring,Prepolymer For Pu Plate XUCHUAN CHEMICAL(SUZHOU) CO., LTD , https://www.xuchuanpu.com
According to the industry*, the dry granulator is a new granulation method developed after the “one-step granulation†of the second-generation granulation method. It is an environmentally friendly granulation process that directly presses the powder into granules. New equipment. The dry granulator uses a new roll control technology. The equipment's control equipment can adjust the fluctuation of any physical properties between different materials and different batches of the same material, so that the dry granulation process parameters can be accurately and repeatedly adjusted. , thereby efficiently producing high quality particles.
In recent years, with the rapid development of Chinese medicine and pharmaceutical industry and the promotion of environmental protection requirements, dry granulator equipment has ushered in a good development space, while industrial concentration has been continuously improved, and market competition has become increasingly fierce. At present, the granulators on the market are diverse and have different functions and are used in different segments of the pharmaceutical industry. And there are many granulator companies that are constantly developing and innovating to develop non-standard products for customers and to manufacture high-quality equipment that is closer to customer needs.
For example, the intelligent automatic dry granulator is characterized by adjustable particle size, can be applied to different granulation requirements, high yield, high degree of automation, easy to use, good versatility, and can be used according to customer needs. Add water cooling device.
The manufacturer of intelligent automatic dry granulator introduced, "This equipment is relatively novel in design, stable and reliable in performance, well-made, using German production technology, equipped with automatic feeding system, convenient for assembly and disassembly cleaning and maintenance, in line with domestic and international GMP, etc. Quality certification requirements."
In the past, the wet mixing granulator has adopted a large number of new technologies on the basis of the original granulation at home and abroad, and has the characteristics of reasonable machine structure, convenient use and perfect functions. And the wet mixing granulator reduces the binder by 25% compared with the traditional process, and the drying time is shortened; the dry mixing is 2 minutes per batch, the granulation is 1-4 minutes, the work efficiency is 4-5 times higher than the traditional process; in the same closed container Completed inside, dry mixing - wet mixing - granulation, process reduction, in line with GMP regulations. However, the drawback of the wet mixing granulator is stable granulation under moist heat conditions.
In recent years, the new automatic dry roll press granulator (touch screen, PLC type) is a dry granulator suitable for large-scale production. It can produce dry powder granules in large quantities. According to different granule requirements, the sifter in the equipment granulation system The number of meshes can be replaced with each other. It can be directly used for tableting or filling capsules, and is suitable for drug granulation which is unstable under wet heat conditions which cannot be granulated by conventional wet granulation.
The granulator introduced by the company is suitable for the development and production of pesticides and pharmaceutical industry. The machine can be combined with conveyors and drying equipment to form an automatic production line, saving labor costs.
In addition, companies have developed rotary cutter granulators. “The length of this equipment is the same, but the screen has been improved. It was not suitable for viscous material granulation. The improvement solved this problem.†Rotary cutter granulator manufacturers said.
Here is a step-by-step guide on how to cast polyurethane prepolymers:
1. Prepare the mold: Clean the mold thoroughly and ensure it is free from any debris or contaminants. Apply a mold release agent to facilitate the easy removal of the cured polyurethane.
2. Measure and mix the components: Measure the desired amount of polyol and isocyanate components. The specific ratio will depend on the desired properties of the final product, which can be found in the product's technical data sheet. Pour the measured components into a clean mixing container.
3. Mix the components: Use a mechanical mixer or a high-speed drill with a mixing attachment to thoroughly mix the polyol and isocyanate components together. Make sure to mix for the recommended amount of time specified by the manufacturer to ensure complete homogeneity.
4. Degassing: After mixing, it is important to degas the mixture to remove any trapped air bubbles. This can be done by placing the mixture in a vacuum chamber and applying vacuum pressure for a specified period of time. Alternatively, a vacuum degassing unit can be used.
5. Pouring the mixture: Once the mixture is properly degassed, pour it into the prepared mold or container. Take care to avoid introducing any additional air bubbles during the pouring process.
6. Curing: Allow the poured mixture to cure at room temperature or, if necessary, in a temperature-controlled environment. The curing time will vary depending on the specific polyurethane prepolymer used and the desired hardness or flexibility of the final product. Follow the manufacturer's recommendations for curing time and temperature.
7. Demolding: After the polyurethane has fully cured, carefully remove it from the mold or container. Use caution to prevent any damage to the cured part.
8. Post-curing (optional): Depending on the specific polyurethane prepolymer used, post-curing may be required to optimize the material's properties. This can be done by subjecting the cured part to elevated temperatures for a specific period of time.
It is important to note that casting polyurethane prepolymers requires proper safety precautions, such as wearing appropriate personal protective equipment (PPE) and working in a well-ventilated area. Always follow the manufacturer's instructions and guidelines for handling and working with polyurethane prepolymers.