ABS resin flame retardant

ABS resin flame retardant

ABS resin has a good impact resistance, rigidity and other mechanical properties and good processability, easy painting, coloring and electroplating, is widely used in machinery industry, automobile industry, electronic industry, instrument industry, textile industry and construction industry, the production and consumption of ABS market center shift to Asia, China has become an important consumer of ABS, ABS resin for the development of flame retardants is booming.

Flame retardant ABS in a variety of special ABS resin is an important species, used in computers, office machines and telecommunications equipment situation of ABS resin the flammability requirement accord with the relevant provisions of the us security laboratory standard UL 94, at the same time, along with the people environmental protection consciousness enhancement, the higher requirements for flame retardant products of environmental protection safety, the eu ROHS directive stipulates that starting from July 1, 2006 in the eu market of 6 kinds of harmful substances in electrical and electronic equipment (lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PCBS) and polybrominated diphenyl ether) shall not exceed the stipulated standards.

The development direction of flame retardant ABS resin is more functional and high-performance, such as flame retardant heat resistant, flame retardant, weather resistance, flame retardant ABS resin because of the effect of various additives, as well as the impact of the in order to guarantee good performance, need to improve the ABS grafted powder adding proportion or with chlorinated polyethylene, SBS and so on, cause loss of heat resistant performance, thermal deformation temperature decreased significantly, generally only 73 ~ 73 ℃ (ABS thermal deformation temperature is 85 ℃ ~ 9 o), at the same time in the computer, telecommunications equipment, household electrical appliances such as rice cooker, microwave oven, electric fans, and other fields of application and its good heat resistance performance.

Application of phosphorus and bromine flame retardants in PC and ABS alloy. PC/ABS alloy has excellent comprehensive performance. Although the PC itself has certain flame retardancy (LOI = 25%), the flame retardant performance declines after mixing with ABS. Flame retardants must be added to meet the application of PC/ABS alloy in electronics, electrical switches and electrical appliances.



Cresyl Diphenyl Phosphate(CDP) Use

This Product Is Flame Retardant Plasticizer, And Resin Compatibility, For Polyvinyl Acetal, Nitrocellulose, Polyvinyl Chloride, Natural Rubber And Synthetic Rubber; Can Also Be Used For Synthetic Lubricants And Hydraulic Oil; Substitutes For Triphenyl Phosphate. Applicable To Polyvinyl Chloride, Vinyl Chloride Copolymer, Polyvinyl Acetal, Nitrocellulose, Ethyl Cellulose, Cellulose Acetate Butyrate And So On.


The common flame retardants used in the commercial flame retardant PC/ABS alloy are brominated flame retardants, such as brominated epoxy resin, brominated polycarbonate, brominated polystyrene, decabromodiphenyl ethane. Phosphate flame retardant. Such as TPP, RDP, BAPP; Phosphor bromine structure flame retardant, such as phosphate 3 (2, 4, 1, 4, 1, 2 bromophenyl ester), the product number is KroitePB- 460. Their flame-retardant PC/ABS alloy has its own characteristics.

The flame retardants used for flame retardant PC/ABS alloy were compared. The results showed that the quality ratio of PC/ABS was 7:3. The flame retardant properties of the flame retardants of the flame retardant PC/ABS are added to the l3 % of the flame retardant, which can make the flame retardant performance of the material to the UL- 94v-0 (1). 6 nun); The flame retardant of phosphate ester is not good for the flame retardant of ABS, but only when the quality score of PC in the material is greater than 70%.

The flame retardant of a phosphatide is used for the flame retarding, even if the PC quality score is 50% in the material, it can reach the uL- 94v-o grade (1). 6mm), indicating that phosphorus and bromine have a coeffect in PC/ABS alloy, and the flame retardant and bromine flame retardant are used in flame retardant PC/ABS alloy. There are similar effects.

The expandable graphite is a new type of halogen flame retardant. It is processed by natural graphite through concentrated sulfuric acid, then washed, filtered and dried, then 900~ 1000. C is extruding. Expandable graphite expansion of initial temperature about 220 ℃, usually at the beginning of the 220 ℃ mild inflation, 23 o a 28 ℃ rapidly expand, o after volume can reach more than 100 times, even 280 times.

The expandable graphite mainly ACTS as follows; Forming a tough carbon layer on the surface of the polymer, separating the combustible from the heat source; In the expansion process a lot of heat absorption, reduces the temperature of the system; In the expansion process, the acid root ions in the interlayer are released to promote the carbonization of dehydration, and can be combined with the free radicals generated by the combustion to interrupt the chain reaction. The use of expandable graphite and phosphor compound and metal oxide compound can produce synergistic effect.

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