Energy & Green Tech

Ethane storage seen as key to revitalization of Appalachia

Plans are underway in Appalachia to create two underground facilities to store ethane, a byproduct of natural gas drilling seen as integral to revitalizing a region still struggling from the loss of industrial and manufacturing ...

Engineering

Industrial 3-D printing goes skateboarding

Kayak paddles, snowshoes, skateboards. Outdoor sporting goods used to be a tough market for 3-D printing to break into, but fused particle fabrication (FPF) can change that.

Machine Learning & AI

A bio-inspired approach to enhance learning in ANNs

The human brain continuously changes over time, forming new synaptic connections based on experiences and information learned over a lifetime. Over the past few years, artificial Intelligence (AI) researchers have been trying ...

Energy & Green Tech

Bike-path made from recycled plastic opens in the Netherlands

Officials with the Dutch city of Zwolle have announced the opening of a new bike path made using recycled plastic. The bike path is part of a nationwide effort to recycle more user end products. The bike path was made using ...

Engineering

MIT Rocket Team shows rocket motor printed from plastic

(Tech Xplore)—MIT Rocket Team on April 21 successfully fired a rocket motor printed from plastic. They had project support from Markforged for their 3-D printed rocket motor. They put out a video to show it in action.

Energy & Green Tech

A mobile solar-powered recycling plant that turns trash into tiles

(Tech Xplore)—A team of researchers with Miniwiz has developed a mobile recycling plant called the Trashpresso that can be hauled between locations. In addition to its mobility, it's also solar powered, making it useful ...

Engineering

As 3-D printing grows, so does need to reclaim plastic waste

UC Berkeley is a leader in 3-D printing. From creating a prosthetic hand for an 8-year-old girl to a "smart cap" that senses spoiled food to large-scale cement buildings, engineers and designers on campus are pushing the ...

Energy & Green Tech

Agar alternative to plastic for packaging tops award event

(Tech Xplore)—Plastic container discards floating in oceans are an ugly sight and troubling environmental issue; scientists are exploring better ways to assure a cleaner future. That includes exploring materials that are ...

Consumer & Gadgets

Smartphone 3D printer visits Kickstarter

A smartphone 3D printer? That idea may take some getting used to. Could it be possible that everyone can start printing 3D objects directly from their phone? OLO 3D in San Francisco has developed the idea to the max.

Energy & Green Tech

OLED experts to advance improved production techniques

Back in May, Steven Shankland in CNET said that, for the lighting business, "the next technology is coming: OLED (organic light-emitting diode) lighting. It replaces the small, bright dots of LEDs with sheets of light that ...

Engineering

3D pen-in-air aims for professional heights

In the 3D marketplace, would a small, lightweight 3D printing pen, enabling doodling in the air with precision, really take off? Here's an indication: a Kickstarter project offering a 3D pen that is small, light and able ...

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Plastic

Plastic is the general common term for a wide range of synthetic or semisynthetic organic amorphous solid materials suitable for the manufacture of industrial products. Plastics are typically polymers of high molecular weight, and may contain other substances to improve performance and/or reduce costs.

The word derives from the Greek πλαστικός (plastikos) meaning fit for molding, and πλαστός (plastos) meaning molded. It refers to their malleability, or plasticity during manufacture, that allows them to be cast, pressed, or extruded into an enormous variety of shapes—such as films, fibers, plates, tubes, bottles, boxes, and much more.

The common word plastic should not be confused with the technical adjective plastic, which is applied to any material which undergoes a permanent change of shape (plastic deformation) when strained beyond a certain point. Aluminum, for instance, is plastic in this sense, but not a plastic in the common sense; while some plastics, in their finished forms, will break before deforming and therefore are not plastic in the technical sense.

There are two types of plastics: thermoplastics and thermosets. Thermoplastics, if exposed to enough heat, will melt. Thermosets will keep their shape until they are charred and burnt. Some examples of thermoplastics are grocery bags, piano keys and some automobile parts. Examples of thermosets are children's dinner sets and circuit boards.

This text uses material from Wikipedia, licensed under CC BY-SA