Among many flame retardants, red phosphorus flame retardants are widely used because of their high efficiency, halogen-free, and low smoke. However, there are some shortcomings in the practical application of red phosphorus flame retardants, such as easy precipitation and poor compatibility. To solve these problems, researchers have developed a new type of red phosphorus flame retardant, microencapsulated red phosphorus flame retardant. This article will detail the differences between red phosphorus flame retardants and microencapsulated red phosphorus flame retardants.

Let's take a look at red phosphorus flame retardants. Red phosphorus is an inorganic substance with good thermal stability and flame retardant properties. Red phosphorus flame retardant mainly plays a role in two ways: one is to form a stable porous carbon layer during the combustion process to isolate oxygen and combustibles; The second is to release phosphoric acid, which reacts with the hydroxyl group in the combustible to form dehydrated carbon, thereby reducing the calorific value of the combustible. Red phosphorus flame retardants are widely used in plastics, rubber, coatings, textiles and other fields.

There are some problems in the practical application of red phosphorus flame retardants. First of all, red phosphorus is prone to precipitation, resulting in poor stability and compatibility of the product. Secondly, red phosphorus reacts with water vapor in the air at high temperatures to form highly toxic phosphorus pentoxide, which is harmful to the human body and the environment. In addition, the flame retardant effect of red phosphorus is affected by the amount of addition, and excessive addition will lead to a decrease in the mechanical properties of the product.

To solve the above problems, researchers have developed microencapsulated red phosphorus flame retardants. Microencapsulated red phosphorus flame retardant is a special red phosphorus flame retardant whose core is to encapsulate red phosphorus in a tiny polymer capsule. This capsule can effectively prevent the precipitation of red phosphorus and improve the stability and compatibility of the product. At the same time, the microencapsulated red phosphorus flame retardant will not react with water vapor at high temperatures, reducing the harm to the environment and the human body.

Microencapsulated red phosphorus flame retardants also have other advantages. First of all, the addition of microencapsulated red phosphorus flame retardant is low, which can ensure the flame retardant effect while reducing the impact on the mechanical properties of the product. Secondly, microencapsulated red phosphorus flame retardant can improve the weather resistance and aging resistance of the product. Finally, microencapsulated red phosphorus flame retardants can synergize with other flame retardants to improve the composite flame retardant effect.

There are obvious differences between red phosphorus flame retardants and microencapsulated red phosphorus flame retardants in terms of structure and performance. Microencapsulated red phosphorus flame retardant effectively solves the problem of red phosphorus flame retardant in the practical application process by encapsulating red phosphorus in a polymer capsule, and improves the comprehensive performance of the product. With the continuous development of science and technology, the application prospect of microencapsulated red phosphorus flame retardant in various fields will be broader.

Hongtaiji has been professional in flame retardant for 20 years, and its products meet international environmental protection requirements: (1) EU ROHS directive (2) REACH regulatory standards. Obtained ISO9001:2015, ISO14001:2015, ISO45001:2018 management system certification. Independent research and development of melamine cyanurate (MCA), microencapsulated red phosphorus, melamine pyrophosphate (MPP), polyolefin halogen-free flame retardant, acid fire retardant coating, acrylic flame retardant, and other environmentally friendly flame retardants.