ABS plastic sheet performance introduction and 3 types of modification methods

ABS sheet belongs to the flammable material, burning fast when on fire, and release a lot of poisonous gas and black smoke, is not conducive to practical applications. With the progress of science and technology and the improvement of the quality of life, people's safety awareness is getting stronger and stronger, and domestic and foreign plastic materials used in automobiles, construction, household appliances, office supplies and other aspects of the strict fire-retardant fire retardant requirements, and formulated the corresponding technical standards and norms, so the study of flame retardant ABS sheet has also taken on considerable significance.
There are three main ways to reduce the combustibility of ABS sheet:
1, the use of flame-retardant plastic particles and ABS co-mingled, such as PC, PVC.
2, the existing ABS raw materials for chemical modification, such as the addition of tribromostyrene as the fourth monomer to prepare a four-component ABS.
3, through a common method to add flame retardants to ABS, including inorganic flame retardants (such as MoO3) and organic flame retardants (such as halogenated compounds, phosphorus flame retardants). Flame retardant types have highly effective flame retardant effects, but other properties may not be good (e.g., aging, high cost).

Chemically modified ABS requires specific production processes that are more complex. The third approach strikes a balance between cost and performance and offers more flexibility in designing multifunctional materials. Currently, flame retardant modification of ABS sheet is dominated by the addition of highly effective halogenated flame retardants.
Heat Resistant (High Temperature Resistant) Grade ABS
Heat-resistant ABS sheet has a heat distortion temperature of 90~105℃, with good heat resistance, toughness and fluidity. It can be used in the production of car doors, rear wheel cover inner plates, panels, etc. It is applied in the field of home appliances, such as microwave ovens, rice cookers, hairdryers, etc. The heat resistance of ABS can be improved by lowering the rubber content, increasing the molecular weight of SAN and the acryl acrylate content.

Antistatic grade ABS sheet
The surface static charge of ABS sheet triggers problems such as adsorption of dust, difficulty of mould release and electrostatic discharge during processing, transportation and use. Therefore, ABS sheet needs to have a certain conductivity to prevent internal discharges and even shield the outside world from electromagnetic interference with precision electronic components. Adding an antistatic agent prevents static charges from being generated or dissipated, and is the main method of preparing antistatic grade ABS sheet.
Antistatic agent can be added before or during the processing of ABS sheet, in the same formula conditions, co-mingling machinery and co-extrusion process and other production conditions will have a great impact on the final product performance, such as mixing temperature, residence time, extrusion output, die temperature, etc. will have a direct impact on the performance of the final product.