In our lives the application of plastic products has become more and more widespread, their good cost-effective and better toughness and relative health and safety of the quality of the plastic products gradually began to replace other raw materials in many places play a key role, and in the middle of the plastic products are often pvc plastic-based, then the next may as well and Xiaobian come to know about pvc plastic multi-faceted knowledge, we mainly mentioned the difference between the product and other similar plastic comparison, in addition, there can provide rough price information, this part of the content may be able to provide information on pvc plastic. Plastic multi-faceted knowledge of it, we mainly mentioned the difference between the product and other similar plastic comparison, in addition, there can provide the general price information, this part of the content may be extremely important for all of us to refer to the significance of the information.
A, vinyl chloride (PVC) and polyethylene (PE) difference
Commonly, there are two kinds of plastic: one is polyethylene film; one is polyvinyl chloride film. Plastic bags made of polyethylene film is non-toxic, can be used to hold food, but the strength is poor, and can not withstand high temperatures above 80 ℃, and a certain degree of permeability, should not be used for a long period of time to hold tea, spices and so on. Plastic bags made of polyvinyl chloride film is toxic, and therefore should not be in direct contact with food. Polyvinyl chloride plastic is commonly used to make raincoats, shoe soles, bedspreads, curtains, tablecloths, handbags and so on.
Identify the above plastic bags of simple methods:
1, touch method: touch with a lubricating feeling, the surface like a layer of wax coated (chemically known as the wax sense), which is non-toxic polyethylene film; and polyvinyl chloride film feel a little sticky.
2, shaking method: hand shaking sound brittle, is non-toxic polyethylene film; hand shaking sound muffled polyvinyl chloride film plastic bags.
3, combustion method: the fire is ignited, the flame is yellow, burning paraffin-like oil droplets dripping. And the odor of burning candles, is a non-toxic polyethylene film; if not easy to burn, away from the fire that is extinguished, the flame is green for the polyvinyl chloride film plastic bags.
4, immersion method: the plastic bag will be immersed in water, the hand will be pressed into the water can float to the surface of the non-toxic polyethylene film; sink to the bottom of the water for the polyvinyl chloride film plastic bags. Polyethylene? PE for short, it is a polymer of ethylene, non-toxic. Easy to color, good chemical stability, cold resistance, radiation resistance, good electrical insulation. It is suitable for food and drug packaging materials, making eating utensils, medical equipment, but also can be used as an insulating material for the electronics industry and so on.
Polyvinyl chloride text referred to as PVC, is a polymer of vinyl chloride. It is chemically stable, resistant to acid, alkali and some chemicals. It is resistant to moisture, aging, flame retardant. It can not be used at a temperature of more than 60 ℃, in the low temperature will be hardened. Polyvinyl chloride is divided into soft plastic and hard plastic. The soft plastic is mainly made into film for packaging materials, rainproof products, agricultural seedling film, etc. It can also be used as insulation layer for cables and wires, and artificial leather products. Rigid generally made of pipes and plates, pipes used as water pipes and transport corrosion-resistant fluid pipes, plates used as a variety of storage tank lining and flooring. Polyvinyl chloride (PVC) resin is not toxic, polyvinyl chloride monomer is highly toxic, polyvinyl chloride products are toxic or not, depending on its residual monomer in the polymerization process is removed to a certain requirement, and the second is to look at its processing additives added in the process of toxic or not. Such as PVC food cling film in the vinyl chloride monomer if the content is too high, especially in high-temperature environments such as microwave ovens, it is easy to decompose the human body has a carcinogenic effect of substances; in addition, the processing of PVC cling film with plasticizers, stabilizers, etc. If the choice of a bad, but also prone to certain hazards to the human body.
Two, pvc plastic how much
1, mingtai pvc soft pvc hardboard factory direct
Company name: zouping mingtai environmental protection equipment limited company
Starting price:? ￥ 4?/square meter
2, PVC compound stabilizer? Profiles special? Lead salt
Company Name: Hebei Xinxinfa Plastic Co. ￥ 9750?/ton
3, Hengbang 30L plastic drums customized?PVC
Company Name: Wen'an County Hengbang Plastic Products Factory
Starting Price:? ￥ 6?/a
The above price is for reference only
Considering that there are many specific product categories in the plastics market, but most of them are based on pvc plastics, this type of plastic machine can be used for the production of processed, but also in the daily life of the family to see them play a key role, so the above editorial gives you relevant similar aspects of the description of the information and the basis of the board! The text of the knowledge, including pvc plastic and other plastics comparative analysis and market prices, which can help both interested in consumption and understanding of friends, but also to help the intention of reference and learning friends, I believe that can be used for everyone to a certain extent.