On green flame retardants
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Halogen-free flame retardants, especially nitrogen-phosphorus types, and more particularly phosphate ester flame retardants – I wonder if any professionals have discussed this.
In fact, so-called green flame retardants are not necessarily halogen-free. There is still no consensus regarding the carcinogenic effects of hydrogen halides, but the use of flame retardants that contain halogens has already been restricted in many cases. There are also many problems with phosphorus-based flame retardants; many of the raw materials required for their synthesis are toxic, and phosphorus can contaminate the environment when it ends up in sewers. There are several types of phosphorus-based flame retardants. One common type is inorganic phosphorus-based flame retardants, primarily red phosphorus and phosphorus compounds coated with red phosphorus. Other types include polymers of phosphoric acid. Organic phosphorus-based flame retardants include phosphates, phosphites, and phosphine oxides. The best for personal use is Dopo.
Also, in fact, silicon-based flame retardants are widely used these days, and they have relatively good performance. There are also many inorganic flame retardants that work well.
Regarding phosphates, polyphosphates are often used; which one yields the best results? Is it true that monoesters have the highest phosphorus content and therefore the best performance?
What flame-retardant products are there in the silicon-based category? ?
Flame retardants are also used in the dyeing and finishing industry. When people buy clothes and other textiles, they have probably heard of the concept of \"three-proof finishing,\" and fire resistance is achieved through flame retardant treatment. In the dyeing and finishing industry, the use of flame retardants requires careful consideration: toxic and harmful substances in textiles are subject to various standards, and the flame retardant effect deteriorates over time due to frequent washing, which makes it important to choose the right flame retardants.
The so-called green flame retardants do not refer to those that are free of halogens, but rather to those that do not release toxic gases during combustion. Currently, the market is filled with a wide variety of nitrogen-based, silicon-based, phosphorus-based, and inorganic flame retardants. But overall, no flame retardant possesses the same level of flame-retardant efficiency as halogen-based flame retardants, along with relatively minimal performance loss to the raw materials. Therefore, the current market still focuses on improving halogen-based flame retardants.
Silicon-based flame retardants mainly include silicates, silanes, siloxanes, and polydimethylsiloxane; furthermore, SFR-100 produced in the United States is also a type of silicon-based flame retardant
I thought silanes were generally used as coupling agents. —
Is no one using magnesium hydroxide as a flame retardant either? Can we communicate?
Environmental protection is a hot topic, definitely