There are various formulations of ABS flame retardant masterbatch with slightly different preparation methods, among which the ABS flame retardant masterbatch based on DBDPO and Sb2O3 system is more widely used and effective. The masterbatch prepared by this preparation method is characterized by good flame retardant effect, low addition amount and good stability. The following is a brief introduction to the formulation and preparation process.

1, raw materials and formulations

Chlorinated polyethylene (CPE) carrier resin: 100

Decabromodiphenyl ether (DBDPO): 70%.

Antimony trioxide (Sb2O3): 23

Styrene-butadiene rubber powder (VP101): 4 -7

Antioxidant: 0.2

Other additives: appropriate amount

2, Preparation process

Plasticizing temperature 160-170℃, plasticizing time 8min; molding temperature 170℃, molding time 5min; molding pressure 15MPa, holding time 5min.

3, Flame retardant effect

Flame retardant temperature: 609 ~ 650℃.

Vertical combustion grade: UL 94 V-0

4、Evaluation of effect

(1) The flame retardant effect is good when the mass ratio of DBDPO and Sb2O3 is 3:1.

(2) When the mass fraction of DBDPO in the flame retardant masterbatch is 70%~80%, the flame retardant temperature of ABS is 605~690℃, which can reach the UL 94 V-0 flame retardant standard.

(3) CPE-based flame retardant masterbatch can significantly improve the flame retardant properties, mechanical properties and thermal properties of ABS resin.

(4) CPE as the carrier resin, the ratio of the main and auxiliary flame retardants is 3:1 (the main flame retardant content of 70 parts), the masterbatch add 10 parts of the flame retardant performance and other properties are better.

ABS flame retardant masterbatch preparation process is relatively simple, the importance of the formula is the first. Low additives, high flame retardant efficiency, environmental protection, inexpensive ABS flame retardant masterbatch formula design, preparation of the basic principles.