We use flame retardant pp will be usedMagnesium hydroxideYes, what are the specific production details? We will introduce them to you in detail below.
Magnesium hydroxide environmental protection halogen-free flame retardant is a common flame retardant, in addition to flame retardant and smoke suppression performance, and high dehydration temperature, more suitable for processing temperature higher PP and other polymer flame retardant modification, but also make flame retardant plastics easier to recycle. So what are the details of the production of flame retardant PP magnesium hydroxide flame retardant? The following small series to introduce to you.
1. When using MG(OH)2 to flame retardant PP, in order to make the material reach the UL94V-0 flame retardant grade (3.2mm sample), the dosage should be ≥ 60%. However, if MG(OH)2 is used to suppress smoke, the dosage can be lower. The smoke density of PP containing 40% MG(OH)2 is only about 1/3 of that of non-flame retardant PP.
2. When the content of MG(OH)2 in PP reaches 65%, its mechanical properties, especially impact strength and elongation are significantly deteriorated.
3. In order to make the mechanical properties of MG(OH)2 flame retardant PP material not to decline a lot, should choose the fine particle size, narrow and uniform particle size distribution of MG(OH)2 as raw materials, and double coupling surface treatment, in order to improve the rheological properties of the material.
4. All PP and toughening agent and the required amount of 60% Mg(OH)2 can be added to the mixing mixer for the first time. After mixing for several minutes, the remaining Mg(OH)2 can be added for the second time.
5. When feeding, it should be noted that the feeding should be uniform and the measurement should be accurate.
The above is about the production of flame retardant PP magnesium hydroxide details, I hope you can help.