Industry News

Advantages & Disvantages for ABS-Plastic Injection Material

2021-07-19

Advantages & Disavantages for ABS-Plastic Injection Material

Acrylonitrile-butadiene-styrene (ABS) (milky white translucent)

 

Advantages for ABS Plastic Injection Material:

 

1. Good mechanical and thermal properties, milky white translucent, high hardness, easy to plate metal on the surface

 

2. Fatigue and stress crack resistance, high impact strength

 

3. Resistant to chemical corrosion such as acid and alkali

 

4. Easy to process and modify

 

Disadvantages for ABS Plastic Injection Material:

 

1. The weather resistance is poor 2. The heat resistance is not ideal, 3. The elongation rate is low

 

Main application areas: machine covers, covers, instrument housings, hand drill housings, fan impellers, radios, telephones and TV sets, some electrical parts, auto parts, machinery and conventional weapon parts

 

Modified ABS Copolymer:

 

Adding ABS to PVC can improve its impact toughness, flame resistance, aging resistance and cold resistance, and improve its processing performance;

 

Blending ABS with PC can improve impact strength and heat resistance; replacing the acrylonitrile component in ABS with methyl methacrylate can produce MBS plastic, which is commonly referred to as transparent ABS.

 

ABS/NYLON

 

Heat and chemical resistance, good fluidity, low temperature impact resistance, low cost

 

Mainly used for car body guards, engine room components, connectors, power tool shells

 

ABS/PVC

 

PVC increases fire resistance and reduces costs ABS provides impact resistance

 

Mainly used for home appliance parts and office machine parts

 

ABS/PC

 

Increase ABS heat-resistant dimensional stability, improve PC low temperature, rear wall impact resistance, and reduce costs

 

Mainly used for typewriter shells, word processors, computer equipment shells, medical equipment components, small household appliances components, electronic equipment components, car headlight frames, taillight covers, food plates

 

ABS/SMA

 

Increase heat resistance, fluidity, and good paintability

 

Mainly used for Electronic components, Covers, Home Appliance Components

 

Plastic Injection Mold design

 

1. Exhaust

 

In order to prevent defects such as poor exhaust, burns, and welding seams during mold filling, an exhaust groove with a depth of not more than 0.04mm is required.

 

Wall thickness

 

Between 0.8 mm and 3.2 mm, the typical wall thickness is about 2.5 mm, and structural foaming is required for 3.8 mm or more.

 

Fillet

 

The minimum is 25% of the thickness, and the most suitable radius is 60% of the thickness.

 

Shrinkage rate: 0.4%-0.7% generally 0.5%

 

Reinforcing rib: height<3T width 0.5T rib spacing>2T demoulding angle: 0.5°-1.5°

 

The height of the pillar stiffener is 4T, which can reach 90% of the pillar height, the width is 0.5T, and the length is 2T.

 

Pillar: The outer diameter is twice the inner diameter