Precautions for ABS plastic, what is ABS plastic

ABS material, also known as ABS engineering plastic, is opaque and ivory-colored granules in appearance, and its products can be colored and have high gloss. The relative density of ABS is about and the water absorption rate is low. ABS has good adhesion to other materials and is easy to print, coat and coat.

ABS has an oxygen index of 18 20 and is a flammable polymer with a yellow flame with black smoke and a special odor.

The most commonly mentioned is the case of the notebook.

ABS plastic is a terpolymer of acrylonitrile (A), butadiene (B) and styrene (S), and the relative content of the three monomers can be arbitrarily changed to make various resins. ABS has the common properties of all three components, A makes it chemically resistant, heat-resistant, and has a certain surface hardness, B makes it highly elastic and tough, and S makes it have the processing and molding characteristics of thermoplastics and improves electrical properties. Therefore, ABS plastic is a kind of "tough, hard and rigid" material with easy raw materials, good comprehensive properties, cheap and wide uses.

ABS plastics have been widely used in machinery, electrical, textile, automobile, aircraft, ships and other manufacturing industries and chemical industries.

Content Expansion:Preparation Method:

There are many production methods of ABS, which can be divided into four categories: doping, grafting, and grafting-doping, and about 11 preparation processes. Nowadays, most of the emulsion method is used, and the most promising one is the emulsion grafting method. ABS can be prepared by changing the proportion of three monomers and adopting different polymerization methods, and its structure has graft copolymer with elastic as the main chain and graft copolymer with resin as the main chain, and the proportion range of the three monomers is roughly 25% 35% of acrylonitrile, 25% 30% of butadiene and 40% of styrene 50%.

Since PC ABS is a blend of two polymers, and PC is the main one, when processing products, sometimes there are markings at the gate, usually caused by the expansion of the melt into the mold cavity during high-speed injection. Caused by melt rupture. Starting from the molding process, measures such as increasing the material temperature, increasing the nozzle temperature, slowing down the injection speed and other measures can be taken to reduce the appearance of PC ABS product markings, and the mold temperature can also be increased, the overflow groove can be added, the gate size can be increased, and the gate shape can be modified.

For example, for large thin-walled parts, a fan-shaped gate can also be used, and an ear groove is added at the gate outlet, so that the jet near the gate, the material flow impact mark, and the residual stress are concentrated in the ear groove, without affecting the quality of PC ABS parts. At the same time, due to multiple gate injection molding or multiple runners, welding lines can also occur.

ABS plastic is a very common and widely used thermoplastic engineering plastic in the industrial field, and it is one of the general plastics that are currently used in various industries, which brings great convenience and use needs for industrial production and life and various engineering fields.

The comprehensive properties of ABS plastic are very good, the plasticity is very strong and the flushing strength is generally very high, and the chemical properties are stable, so it is used in various environments, as long as it meets the requirements of its use, then it will not change easily, and the electrical properties are also very good, so it is now a kind of plastic that is more recognized in the industry.

ABS plastic is stable in nature, heat and flame retardant, at the same time, ABS plastic has good solubility, stable nature, can have a strong explosion-proof punch ability, there is no problem in using it at a very high temperature, it has absolute heat resistance, and at the same time is not afraid of fire, it has strong flame retardancy, so it brings a safety guarantee for the use of industrial use, do not worry about fire and other problems, and the performance is absolutely superior.

ABS plastic is suitable for a variety of purposes, at present, it can be said that in the industrial field, almost every industry will use ABS plastic, because of its characteristics and characteristics in all aspects, have met their use needs, so that everyone in the process of use to bring absolute convenience and safety assurance, fluidity and flexibility is very good, but also to meet the use of many special industries.

The gloss of the surface of ABS plastic is very good, easy to process, so it is suitable for making various mechanical parts, so that the parts can be less worn, and our common transmission and telecommunication parts are also processed by using this ABS plastic.

Extended Information] Characteristics of Plastics:

1.Most plastics are lightweight, chemically stable, and won't rust.

2.Good impact resistance.

3.It has good transparency and abrasion resistance.

4.Good insulation, low thermal conductivity.

5.Generally, the formability and colorability are good, and the processing cost is low.

6.Most plastics have poor heat resistance, high thermal expansion rate, and are flammable.

7.Poor dimensional stability and easy deformation.

8.Most plastics have poor low temperature resistance, become brittle at low temperatures, and are easy to age.

9.Some plastics are soluble in solvents.

10.Plastics can be divided into two categories: thermoset and thermoplastic, the former cannot be reshaped for use, and the latter can be reproduced. The physical elongation of thermoplasticity is large, generally in 50% to 500%. The force does not change completely linearly at different elongations.

11.The different properties of plastics determine their use in industry, and with the advancement of technology, the research on plastic modification has not stopped. It is hoped that in the near future, plastics can be more widely used through modification, and can even replace steel and other materials and no longer pollute the environment.

ABS plastic (acrylonitrile-butadiene-styrene) English name: acrylonitrile butadiene styrene

Specific gravity gram cubic centimeter Molding shrinkage Molding temperature: 200-240 Drying conditions: 80-90 2 hours.

Material performance. 1. Good comprehensive performance, high impact strength, chemical stability and good electrical properties. It is suitable for the production of general mechanical parts, wear-reducing and wear-resistant parts, transmission parts and telecommunication parts.

2. It has good weldability with 372 plexiglass, and is made into two-color plastic parts, and can be chrome-plated and painted on the surface.

3. There are high impact resistance, high heat resistance, flame retardant, reinforced, transparent and other grades.

4. The fluidity is a little worse than HIPS, better than PMMA, PC, etc., and the flexibility is good.

Molding performance 1Amorphous material, medium fluidity, large moisture absorption, must be fully dried, the surface of the glossy plastic parts must be preheated and dried for a long time 80-90 degrees, 3 hours.

2.It is advisable to take high material temperature and high mold temperature, but the material temperature is too high and easy to decompose (the decomposition temperature is "270 degrees)".For plastic parts with high precision, the mold temperature should be 50-60 degrees, and the mold temperature should be high. Thermoplastic resistant parts, the mold temperature should be 60-80 degrees.

3. If you need to solve the water pattern, you need to improve the fluidity of the material, and take high material temperature, high mold temperature, or change the water level.

4. If the heat-resistant or flame-retardant material is formed, plastic decomposition will remain on the surface of the mold after 3-7 days of production, resulting in the surface of the mold being shiny, and the mold needs to be cleaned in time, and the exhaust position of the mold surface needs to be increased.

ABS material is also known as ABS engineering plastic.

Chemical name: Acrylonitrile-butadiene-styrene copolymer.

Product Name: Acrylonitrile Butadiene Styrene(ABS).

Widely used in machinery, automobiles, electronic appliances, instrumentation, textiles and construction and other industrial fields, it is a thermoplastic engineering plastic with a wide range of uses.

ABS Plastic - ABS is made by copolymerization of styrene, acrylonitrile and butadiene malay, you can check it out here.

Plastic ABS resin is currently the largest and most widely used polymer, which organically unifies the various properties of PB, PAN and PS, and has excellent mechanical properties of toughness, hardness and rigidity. ABS is a terpolymer of acrylonitrile, butadiene and styrene, with A for acrylonitrile, B for butadiene, and S for styrene. After actual use, it was found that:

ABS plastic pipes are not resistant to sulfuric acid corrosion, and will be crushed and cracked in case of sulfuric acid.