subject: The Advantages And Disadvantages Of Plastic [print this page] Plastic is a synthetic polymer compound, also known as polymer or giant molecule, is generally known as the plastic or resin, can freely change the form style. Is the use of single raw material to synthesis or condensation polymerization of the material, by synthetic resin and filler, plasticizer, stabilizer, lubricant additive, pigment composition, it is the main component of synthetic resin.
Plastic properties of many: 1 of light weight, high specific strength. 2 chemical resistance. 3 excellent insulating properties. 4 excellent silencing and damping effect. 5 some plastic has good light transmittance. 6 some resin and plastics have valuable special performance, etc.. In addition, from an economic point of view, the plastic also have: simple production process easy processing, infrastructure investment and low production cost, save a lot of metal and other material advantages. Therefore, the plastic increasingly wide range of applications.
Plastic has so many advantages, benefit good, and can produce large amounts of the benefit of mankind is worth the happy matter. But with the development of science and technology we found, plastic to human, the ecological environment has great harm.
For example, plastic food packaging effects on people. Food packaging is a specialized plastic bags of food packaging, and other plastic packaging is not used for packaging. In addition, plastic impact on the environment is more greatly. Global plastic total production in 30% for the packaging, household and agricultural fields and other disposable consumer goods. These products are generally time limit for 1 ~ 3 months or half a year, the longest only about a year. But these plastic products is not easy in the natural environment in biodegradation. Therefore, in the city, tourism, water and road side scattered waste plastic packaging to give people the adverse visual stimulation, influence city, the scenic spot overall aesthetic, destroyed cityscape, landscape, the resulting" visual pollution". At the same time, waste plastic packaging into the environment, due to its very difficult to degrade, resulting in prolonged, deep ecological environmental problems.
At the same time resource supply problems give plastic manufacturing poses difficult problems. Over the past few decades, plastic industrial mass production of plastic products resource base oil. Industrial production of plastic waste of petrochemical resources accounted for all the oil resources in the 7%. Our country is a meagre oil resources and energy consuming country. China's petroleum problem is our country only plastic bags each year 1600000 tons of plastic, each producing one ton of plastic bags, consuming more than three tons of oil. Oil resources are limited, in the long run, human consumption demand for petroleum continuously, world without end, and one day will reach the oil depletion of resources. In recent years, because of the big oil producers faced problems: War, political situation is queasy, oil production declined, China and India two population big country of energy consumption for oil demand, leading to the soaring oil prices. The growth of the plastic industry has come a great contradiction between supply and demand and the impact.
Therefore, in order to solve this a series of environmental pollution, shortage of resources, plastic recycling is crunch time.
