The transparent cockpit and pilot helmet of the F35, F22 and J-20 stealth fighters are not glass, but a resin material with excellent rigidity and toughness, which is better than steel. Specially designed, even if there is a rupture or explosion, the fragments fly outwards without going inward, because these fragments are as lethal as bullets in high-speed flight, thus avoiding the situation of injuring the pilot.
In recent years, with the improvement of resin processability and polishing technology, coupled with light weight, strength comparable to steel, small thermal conductivity, in addition to military products, in the civilian products are more than the application of traditional glass in optical lenses, in smart phones, NB, desktops, game consoles, smart TVs, car images and so on.
Resin originally originated from animals and plants, such as rosin, lacquer, amber and marser resin, shellac, etc., with the growth of demand and the development of technology, instead of a large number of oil or natural gas refining, cracking, polymerization and generation, initially only used as coatings, papermaking, insulation materials, adhesives, medicine, fragrances and so on.
In 1909, Baekeland in the United States invented phenolic resin, but in the 1990s the resin was rated as the peak of the worst invention of mankind, and since then it has stood firm and has the potential to give up on others.
Why is resin called the worst invention of mankind in a hundred years with so many applications? Resin coatings, oxygen, seawater has strong corrosiveness, and resin has very good corrosion resistance, wear resistance and acid and alkali resistance, so a variety of industrial and civilian products surface a large number of resin coatings to block or isolate, small to toys, furniture, guardrails, street lamps, large to cars, ocean-going giant ships, buildings and other surface paint.
These resin coatings are not actually not corroded, but they can withstand a long time before they are decomposed and degraded. Different resins degrade from 70 to 200 years, and they slowly become particles, ranging in diameter from 100 nanometers to 5 millimeters, entering mountains and rivers and being absorbed by the human body through the food chain. A mussel contains 90 micro-resin particles, a kilogram of sea salt contains more than 600 grains, each chicken gizzard contains 10 grains, and each bottle of beer contains about a dozen grains.
You say I don't eat meat anymore, is it avoidable? No, each liter of disposable water bottle contains 2 to 44 capsules, human breathing, each person inhales nearly 70,000 microplastics in the dust each year, with the heart and lungs into the human bloodstream.
Under the double-layer action of high-speed sailing and seawater corrosion, the coating needs to be refurbished regularly, which is time-consuming and laborious, how to improve performance and extend the rework? The finer the resin particles, the better the adsorption power, acid and alkali resistance, and the emergence of nanotechnology has realized this possibility, pushing the resin coating to a new height, whether it is the precise control of the curvature of the optical lens coating, or the resistance of aerospace equipment to harsh conditions... But environmental pollution is also under more pressure, and nanotechnology makes resin particles so small that they do not need to pass through the food chain, directly penetrate the skin into the human body, and think about it.
Nano paint can pollute a reservoir with a drop, this pollution is extremely destructive, and the current society has recognized that its application is being limited, but coating manufacturers and users are eager to promote it because of their performance.
The game has begun...
Another revolutionary product of resin, the plastic bag known as the white devil, the impact of which is self-evident, will not be repeated here. This is why resin is called the worst invention of mankind, the death of the earth's environment.