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- [2023-08-08]
What is' one book, one signature '
One book, one signature "refers to chemical safety technical specifications and safety labels. Chemical Safety Data Sheet (SDS), also known as Material Safety Data Sheet (MSDS) in some regions. SDS provides information on the safety, health, and environmental protection of chemicals, recommends protective measures, and emergency response measures. It is an important carrier for chemical sup
- [2023-06-29]
Synthesis of Hydroxyfluorosilicone Oil
Synthesis of Hydroxyfluorosilicone Oil Wang Bingchang (Shanghai Institute of Organic Fluorine Materials) 1 Preface Polymethyl (3,3,3-trifluoropropyl) siloxane fluids with silicon hydroxyl groups as end groups are generally referred to as hydroxyfluorosilicone oils
- [2023-06-27]
Application of toothpaste grade sodium fluoride in toothpaste
Sodium fluoride and fluoride salt toothpaste are good for teeth and can effectively prevent dental caries and reduce the formation of plaque. The fluoride contained in it can enhance the ability of teeth to resist tooth decay and prevent the occurrence of tooth decay. Fluorine toothpaste has a certain anti caries effect, which can reduce the caries rate by up to 28%. Generally, the content of sodi
- [2023-06-09]
Do ice makers need refrigerant for cooling? Decryption refrigeration technology
1、 The refrigeration principle of ice maker The refrigeration principle of an ice maker is to convert liquid into solid through compression refrigeration. It is usually achieved through a compression refrigeration cycle, which includes four parts: compressor, condenser, expansion valve, and evaporator. Among them, the compressor compresses the refrigerant into high-temperature and high-pressure
- [2023-02-04]
What are the uses of fluoropolymers
Due to the low surface tension of fluoropolymers, films made from them (such as ETFE) have self-cleaning function, which can wash away dust with only rainwater flushing.
- [2023-06-09]
What are the common second-generation refrigerants
1、 R-22 refrigerant R-22 is an HCFCs refrigerant that was widely used as an early substitute for fluorocarbons. This refrigerant has good cooling effect and is widely used in small and medium-sized commercial and industrial air conditioning as well as refrigeration equipment. However, R-22 refrigerant has a significant destructive effect on the ozone layer and has been listed as a banned
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