Who understands plastic Common plastics in everyday life

Anyway, there are generally only so many kinds of PC, ABS, and PE, which have relatively large profits and markets.

Yes, I'll do this now.

LDPE (Chinese name: low-density high-pressure polyethylene):

Sensory identification: soft feel: white and transparent, but the transparency is average, combustion identification: the burning flame is yellow on the top and blue on the bottom; It is smokeless when burning, has the smell of paraffin, melts and drips, and is easy to draw.

EVA (Chinese name: polyethylene-ethyl acetate):

Sensory identification: soft surface; The tensile toughness is stronger than LDPE, and the feel is sticky (but there is no glue on the surface); White and transparent, high transparency, and the look and feel are very similar to PVC film, so attention should be paid to distinguish.

Combustion identification: when burning, it is the same as LDPE, with a slightly sour smell of paraffin; Burning flame yellow on top and blue on bottom; Smokeless when burning. Molten dripping, easy to draw.

PP (polypropylene):

Sensory identification: This product is white and transparent, and has higher transparency than LDPE, and there is a sound when rubbing.

Combustion identification: When burning, the flame is yellow and blue, the smell is like oil, melt and drip, and there is no black smoke when burning.

PET film (polyurethane).

Sensory identification: This product is white and transparent, with a hard feel and a sound when rubbing. Looks like PP.

Combustion identification: there is black smoke during combustion, the flame has the phenomenon of jumping, the surface of the material is black carbonized after combustion, and the black carbonization after burning is rubbed by fingers, and the carbide is in the form of powder.

PVC film (polyvinyl chloride).

Sensory Identification: Looks very similar to EVA but is elastic.

Combustion identification: black smoke is emitted when burning, extinguished when leaving the fire, the burning surface is black, and there is no molten dripping phenomenon.

Plastic products in <> life include plastic bottles, plastic wrap, plastic film, plastic lunch boxes, plastic bags, hangers, washbasins, etc.

1. Plastic bottles: mainly made of polyethylene or polypropylene and other materials and adding a variety of organic solvents.

2. Plastic wrap: a plastic packaging product, usually made of ethylene as the masterbatch through polymerization reaction, plastic wrap can be divided into polyethylene, polyvinyl chloride, polyvinylidene chloride.

3. Plastic film: film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins for packaging and as a laminating layer.

4. Plastic lunch box: plastic lunch box has the characteristics of low toxicity, high melting point, strong plasticity, easy production and low relative cost.

5. Fresh-keeping bags mainly refer to bags made of food cling film that are mainly used to preserve vegetables, fruits, grains, cooked foods and other foods, and are widely used in daily life.

6. Hanger hanger: a rack used to put on and drape clothes. "Luban Jingjiang Mirror" talks about two kinds of plain hangers and flower hangers, which are relatively rare outside.

7. Washbasin: a basin used to hold water for washing hands and face, and is an indispensable sanitary ware in people's daily life.

Unexpected plastic products:

01.Cigarette butts are one of the more common types of garbage, but you may never have thought of it: cigarette butts contain plastic in their filters.

The cigarette butt, the tobacco filter, is made of cellulose diacetate. Cellulose acetate is a thermoplastic resin obtained by esterification of cellulose and acetic acid or acetic anhydride under the action of a catalyst, which can be divided into cellulose diacetate and cellulose triacetate according to different degrees of esterification.

Cellulose acetate can be widely used in the production of membrane materials, textile fibers, tool handles, glasses frames, and plastic plates, tubes, rods and other profiles.

Due to the selective adsorption capacity of cellulose diacetate, it can effectively intercept tar and other harmful particles in smoke without changing the taste of smoke. And compared to other filter media, it is the most effective balance between taste and cost. Therefore, cellulose diacetate tow is selected as the filter material for cigarette filters in countries around the world.

02.Tea bags are popular among the public today because they are easy to brew and easy to carry. At first glance, tea bags are made of non-woven fabric, which will not have much impact on the environment, but it is not.

The most common tea bag materials on the market are mainly the following: non-woven fabric, corn fiber (PLA) or pure cotton.

Among them, non-woven fabrics belong to plastics, PLA belongs to degradable plastics, and pure cotton belongs to degradable. Although pure cotton is degradable, it can only be used for one-time use when it is produced with a lot of energy, which is still a pity. Degradable plastics also need to meet certain degradation conditions to achieve the purpose of degradation.

According to the way we dispose of garbage in our daily life, the degree of degradability is very limited.

03.Many beverage lovers will choose canned beverages, so did you know: cans for beverages are only made of aluminum?

In fact, every beverage can on the market is lined with a plastic resin "shield", the material of which is usually epoxy resin.

Epoxy resin, also known as man-made resin, is a class of organic polymers containing more than two epoxy groups in the molecular structure, which belongs to thermosetting plastics. It can be cross-linked with various types of curing agents to form insoluble, non-meltable polymers with a three-way network structure. It has excellent insulation properties, mechanical properties and chemical stability, and is widely used in adhesives, coatings and other fields.

Epoxy resin is added to cans to prevent beverages from corroding aluminum.

Plastic products include plastic cups, plastic lunch boxes, plastic tableware, and so on.

Plastic products are a general term for life, industrial and other products processed with plastic as the main raw material, mainly including injection molding, blister and other products with plastic as raw material.

Plastic is a kind of synthetic polymer material with plasticity. Together with synthetic rubber and synthetic fibers, it forms the three major synthetic materials that are indispensable for daily life.

Common thermoplastics include nitrocellulose plastics, acetate plastics, polyethylene plastics, polypropylene plastics, polystyrene plastics, polyvinyl chloride plastics, etc.

For example, common mineral water bottles, plastic bags, etc. The main varieties of general plastics are polyethylene, polyvinyl chloride, polypropylene, polystyrene, phenolic and amino plastics.

Plastic cups, plastic lunch boxes, plastic cutlery, and more.

Plastics are lighter materials with relative density distributions between. Obviously, can plastic float on the water? In particular, foamed plastics have a lighter texture and a relative density of only because of the micropores inside. This property allows plastics to be used in the production of products that require a reduction in dead weight.

The vast majority of plastics have good corrosion resistance to acids, alkalis and other chemicals. In particular, polytetrafluoroethylene (F4), commonly known as the king of plastics, is even better than ** in chemical stability, and it will not deteriorate if it is boiled in "aqua regia" for more than ten hours. Due to its excellent chemical stability, F4 is an ideal corrosion-resistant material.

For example, F4 can be used as a material for pipes to transport corrosive and viscous liquids.

Due to the non-natural degradability of plastics, it has become the number one enemy of mankind and has also led to the tragedy of the death of many animals. For example, zoo monkeys, pelicans, dolphins and other animals will swallow the No. 1 plastic bottle thrown by tourists by mistake, and finally die painfully due to indigestion.

Looking at the beautiful and pure sea, when you look closer, you can see that there are all kinds of plastic waste that cannot be contained in the ocean, and in the intestines of many dead seabird samples, all kinds of indigestible plastic were found.

Plastic products that ordinary people do not know about in life, such as: microwave ovens, rice cookers, irons and other heat-resistant coated plastic products; electronic wires, batteries, keyboards and other anti-corrosion, electrically insulated plastic products; Plastic products for gas stoves, water heaters and other household household electrical fittings and pipes. With the innovation of high technology.

Nowadays, more and more household products are replaced by plastic products, and DEFLUOR polymer materials specializes in the production of high-quality plastic products.

Washbasins, buckets, laundry basins, plastic anvils, plastic chairs, some cups, sieves, and medicine bottles.

Plastic bags, buckets, plastic cups, disposable bowls, mineral water bottles.

Hello, there are the following common ones: PET, PE (including HDPE and LDPE), PP, PS, PVC, PC, ABS, EVA, EPS, etc., in addition to chemical fibers (nylon, polyester) commonly used in the clothing industry.

Abbreviation meaning: polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and ABS.

Fourth, the use of plastics.

1. Industry.

2. Agriculture.

3. Transportation.

4. National defense cutting-edge industry.

5. Medical and health care.

6. Daily life.

It's not that troublesome, degradable and non-degradable include everything.