In recent years, with the improvement of people’s living standards, with the competition of several European brand boiler makers in mainland China, with the Chinese’s recognition of Europe and European lifestyle recognition, floor heating is a comfortable winter. Heating methods are being accepted by more and more residents in Central China, South China and the Midwest.
The fact that is difficult to avoid behind this series of figures is that China’s energy consumption gap and import pressure are rising. China's crude oil dependence on foreign trade has already exceeded the 50% security warning line as early as in 2009. At present, it has reached 57.5%, and the dependence on natural gas is also exceeding 30% this year. Water and other resource products also face shortages.
Jiuzheng Building Materials Network learned that in order to deal with the shortage of natural gas, the government has issued a step-by-step gas price policy. Currently, there are places in China that have implemented the price ladder for residential gas use in Henan Province, Yunnan Province, Liaoning Province, Heilongjiang Province and Hunan Province. , Jiangsu Province, Guangxi Province, Guangdong Province and other places.
1. The price of gas in major cities in the middle and lower reaches of the Yangtze River is in the middle of the country, generally between RMB 2.20 and RMB 2.60. Some cities in Jiangsu Province have implemented ladder gas prices (Nanjing, Jiangsu, Wuxi, Zhenjiang, Yangzhou, Xuzhou, Huai'an, etc. Lianyungang, etc.)
2. The price of gas in northern cities is relatively low, generally between 2.00 and 2.50 yuan.
3. Gas prices in the south such as Jiangxi, South Zhejiang, Fujian, and Guangdong are generally more expensive, generally between RMB 3.50 and RMB 4.50.
4. Gas prices in the major cities in the southwest and west are the lowest, generally ranging from 1.70 yuan to 1.80 yuan.
5. Zhengzhou, Henan Province, when the monthly gas consumption of the residents is less than 50 cubic meters, the gas price is 1.9 yuan/cubic meter; after 50 cubic meters, the excess part is calculated as 2.2 yuan/cubic meter.
6. Since 2008, Shenzhen has implemented a price system for residents living gas ladders, which is divided into two grades of 3.5 yuan/cubic meter and 4.0 yuan/cubic meter. Compared with the pressure caused by the ladder price on residents, the price of electricity in various places has been falling. In particular, the implementation of the ladder price is the reason for giving priority to the use of electricity products.
Air source heat pump as a substitute for wall-hung boilers uses electric energy as a substitute for natural gas, which also provides users with comfortable heating effects. This avoids the safety hazards of indoor installation of gas stoves and saves users money.
Some of the plastic variety that people will produce large, low price, wide use and wide influence is called standard plastic.Its connotation often changes with the development of time and science and technology.Important standard plastics are polyethylene, polypropylene, polyvinyl chloride, polystyrene and other varieties
standard plastics including polyethylene, polypropylene, polystyrene, PVC, acrylic - butadiene - styrene), poly (methyl benzene acid methyl ester and amino plastics and so on, its production accounted for more than 90% of the whole plastic production, so it is also called the large plastic varieties.
Merits and demerits
Compared with wood, metal, cement, glass and other materials, standard plastics have the following advantages and disadvantages.
Advantages: (1) easy to form, high degree of freedom of design;(2) easy coloring;(3) stronger than metal;(4) lighter weight;(5) easy to modify, easy to obtain required performance;(6) good electrical insulation;(7) good water resistance and no rust;(8) good chemical resistance;(9) production consumes less energy than metal;(10) as long as the waste plastics are treated well, the environmental damage and pollution will be less than other materials.
Disadvantages: (1) poor weatherability, especially in ultraviolet light, aging easily under uv light;(2) generate static electricity;(3) large thermal expansion coefficient and poor dimensional stability;(4) low surface hardness, easy to produce scratches;(5) poor durability and poor environmental stress cracking.
But with the continuous development of blending technology progress, as well as the standard polymer high-performance achievements, some of its insufficient gradually improved, broadens the application field of Standard Plastic, made of plastic in the position in the national economy more and more important.
Standard plastics has excellent performance, variety and versatility.Standard plastics can replace metal materials, cellulose materials and silicate materials with three traditional materials, and as the most powerful competitor of traditional materials.Standard plastics has been widely used in agriculture, light industry, textiles, electronic appliances, machinery, building materials, packaging and transportation and other departments, profoundly influences the whole development and the progress of science and technology, industrial and agricultural production in social development and national economic development, people's material and cultural living standards improve all aspects such as occupies very important position.
The purpose of standard plastics can be covered in the following aspects:
(1) Agriculture: various kinds of agricultural film, sheet materials, holding irrigation pipes, sprinkling irrigation pipes, fishing nets, breeding boxes, floating materials.
(2) industry: due to the electrical insulation of plastics, standard plastics are already used in the electrical industry to make insulating materials and packaging materials.Manufacturing parts and shells in electronic and instrumentation industries;Transmission gears and bearings in the mechanical industry;Chemical industry of various anti-corrosion containers, pipes, slots, tanks, etc.
(3) construction industry: Plastic doors, Windows, ceilings, floor leather, plumbing and pipe fittings, gas pipes and fittings, etc. are made from traditional materials such as wood and metal.
(4) Packaging: Various woven bags, packaging films, composite films, hollow containers, revolving boxes, corrugated boxes, packaging belts, foam plastics, etc.
(5) daily supplies: all kinds of plastic toys, toothbrushes, soap boxes, raincoats, tableware, utensils, slippers, etc.
(6) medical and equipment industry: all kinds of artificial organs, medical use infusion bags, one injection supplies, degradative medical materials.
(7) electric appliance industry: All kinds of office appliances and household appliances insulation, heat preservation, anticorrosive, moisture-proof housing, resistance to the tang, precise military components and so on.
Divisor in the above areas,standard plastics apply more extensive, at present, some standard plastics by modification to expand the application field, in the defense cutting-edge industry, transportation and aviation industry used as structural materials a lot.
Production:
(b) PP Plastic Sheet
(c)Pmma Plastic Sheet/Acrylic Plastic Sheet /ESD PMMA Plastic Sheet/ESD Acrylic Plastic Sheet
Standard Plastics <80℃
Standard Plastic,PE Plastic,PP Plastic,Acrylic Plastic
Dongguan Noegem Plastic Products Co.,Ltd , http://www.noegempLastic.com