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
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
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
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.
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
Warm congratulations to Changshu Hongjia Fluorine Technology for passing the IS09001 quality management system certification for the sale of hazardous chemicals, and obtaining the AAA level integrity management demonstration unit, AAA level quality service integrity unit, and AAA level quality/contract/service integrity unit.
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