Difference between PS material and ABS material

Difference between PS material and ABS material

ABS: Acrylonitrile - butadiene - styrene copolymer

Characteristics are: ABS is acrylonitrile, butadiene and styrene synthesis of three chemical monomers. Each monomer has different properties: Acrylonitrile has high strength, thermal stability and chemical stability; Butadiene has toughness, impact resistance; Styrene is easy to process, finish and high strength. From the morphological point of view, ABS is non-crystalline material. Polymerization of the three monomers results in a terpolymer with two phases, one being a continuous phase of styrene-acrylonitrile and the other being a polybutadiene rubber dispersed phase. The properties of ABS mainly depend on the ratio of the three monomers and the molecular structure in the two phases. This gives great flexibility in the design of the product, and as a result, produces hundreds of different quality ABS materials on the market. These different qualities of materials provide different properties such as medium to high impact resistance, low to high finish and high temperature warping characteristics. ABS material with superior ease of processing, appearance characteristics, low creep and excellent dimensional stability and high impact strength.

PS: polystyrene

Characteristics: Polystyrene is a kind of transparent imitation glass-like material, the proportion of 1.05, and water is basically the same, rigid and brittle, beating, the issue of metal-like "DingDang" sound, crisp sound, commonly known as " Rubber ring. " Non-toxic, tasteless. Pure PS products, fell to the ground, issued a crisp sound, it will immediately cracked.

Because PS has good fluidity, high decomposition temperature and stable melting proportion, it becomes an index parameter for plasticizing efficiency of injection molding machines. The world's injection molding machines are used PS calibration injection molding machine capacity.

The combustion characteristics are flammable and continue to burn after leaving the fire. The top of the flame is golden yellow, which will soften and blister on combustion, no liquid drips and emits black smoke. At the same time, the "sweet smell" of styrene monomer is emitted .

Advantages: Polystyrene acid and alkali resistance and low energy alcohol, by many hydrocarbons, ketones, high fat and other erosion and softening, soluble in aromatic hydrocarbons. Excellent electrical insulation, is a good high-frequency insulation materials, excellent arc. Polystyrene is a highly transparent material with a high surface gloss. Easy to print. Polystyrene can be freely colored, odorless, tasteless, non-toxic, and not fungal growth.

Disadvantages: poor mechanical properties, hard and brittle, susceptible to solvent stress cracking and cracking; surface hardness is low, easy to scratch; poor heat resistance, heat distortion temperature is low.

application

ABS main applications are: automotive (dashboard, tool door, wheel cover, mirror boxes, etc.), refrigerators, high-intensity tools (hair dryers, blenders, food processors, lawn mowers, etc.) Casings, typewriter keyboards, recreational vehicles such as golf carts and jet sleds.

PS main applications are: for the production of transparent lenses, crystal tableware and other transparent products for the injection of low-grade daily necessities and toys shell, lamp shade, used for extrusion blow molded containers, hollow products, bottles.

distinguish

There are two ways to distinguish between ABS and PS plastic

1, rubbed with ethyl acetate, ABS can not afford silk, HIPS will play silk, but only refers to pure.

2, There are many ways to identify ABS and PS. For ABS, the surface brightness is good and the toughness is better than PS. There will be many tiny holes in the surface after burning, the taste is faint and sweet. PS is divided into GPPS, HIPS, EPS three, more crisp, more transparent products, HIPS brightness in general, less toughness than ABS to a little, the surface after burning bright, with the smell of styrene. HIPS cross section white, but not GPPS, EPS is mainly used for foam.

TV shell material, ABS, HIPS points, generally according to the surface features, physical characteristics to distinguish the surface brightness is generally good ABS, when using pliers breaking ABS is better than HIPS, its hardness is higher, the need Greater efforts, and then to distinguish the flame and taste.

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