What's the difference of flame retardant grade of pc/abs plastic board

What is the difference of flame retardant grade of PC / ABS plastic board: the best extrusion temperature of PC / ABS plastic board is 210 ~ 230 ℃. Higher screw speed ratio of extruder is beneficial to the blending of raw materials, which improves the impact compressive strength of the alloy. The results show that the large amount of ash, the expansion of raw material shear stress and the well proportioned raw materials are also beneficial to the improvement of the impact compressive strength of the alloy. The addition of phase organic solvent can further improve the solubility of PC and ABS, and further improve the tensile strength and in-situ stress cracking resistance of the alloy.

The flame retardant grade of ABS plastic sheet is only 18%, which is easy to ignite. In order to achieve the fire safety requirements, flame retardant modification must be carried out. All over the world, there are established requirements for the flame retardant grade of ABS modified plastics commonly used in electronic devices, household appliances and other commodities. It is generally stipulated that the flame retardant grade exceeds UL94V-0.

The regulations on the flame retardant level of ABS plastic plate and alloy are generally not high, so the application regulations can be considered without adding flame retardant. However, for the unique production of car ash box, the best one is to use flame retardant raw materials that can extinguish when the fire is on. At present, the flame retardant modification of ABS raw materials is dominated by halogen containing flame retardant with high efficiency, and the flame retardant ABS / PC alloy is dominated by phosphorus flame retardant with more environmental protection. ABS epoxy resin has good flame retardant performance, which is suitable for car production with high flame retardant level, such as car smoke box, car home appliance shell, etc.; it can improve the mechanical properties of ABS structure, replace metal materials, reduce the weight of parts and production costs; the purchase of modified ABS plastic plate is in line with relevant policies and regulations, current policies, and has a very good development prospect. GF improved ABS plastic sheet has excellent comprehensive properties, such as high compressive strength, good rigidity, anti-corrosion, heat insulation, heat resistance, strong formability, stable specification, etc., forming, less damage to abrasive tools, easy to purchase, so it is more common.

Under the same secret recipe standard, blending machine and equipment, blending processing technology, injection molding and other manufacturing standards often have great harm to the performance of the latest products, such as mixing temperature, waiting time, screw speed ratio of extruder, extrusion production, injection processing temperature, grinding tool temperature, etc. The mixing time and temperature are harmful to the shape of PC / ABS modified plastics. The impact compressive strength of the alloy is one of the most harmful structural mechanical properties. If the blending temperature is too low, the raw materials can not be fully melted, and the actual mixing effect is not very good, so the impact compressive strength is low; if the blending temperature is too high, some raw materials dissolve, and the impact compressive strength also decreases.