![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
According to the “12th Five-Year Plan for Energy Conservation and Emission Reduction†of China Drying News, the average fuel consumption of passenger vehicles will be reduced from 8 litres per 100 kilometers in 2010 to 6.9 liters per 100 kilometers in 2015. In the future, automobile manufacturing The fuel economy requirements for tires will also be greatly improved.†At the 2012 2012 Meridian Tire and Steel Skeleton Material Technology and Development Forum held in Sanya from December 7 to 10, experts stated that the promotion of new skeleton materials is to achieve fuel economy. Important measures.
It is understood that the focus of China's vehicle fuel economy is mainly concentrated on two aspects of lightweight and engine transformation. 20% of the car's energy consumption is used to overcome tire rolling resistance, and the proportion of commercial trucks is as high as 30%. Based on this calculation, the global share of fuel consumption directly related to tires is as high as 10%. The development of high-strength, high-modulus new types of framework materials is a shortcut to achieve lightweight tires, reduce rolling resistance, and thus reduce vehicle fuel consumption.
Cai Weimin, secretary-general of the China Rubber Industry Association’s tire division, said that steel cord is the most used frame material in tires and the main force for lightweighting tires. This can be achieved by increasing the strength of the steel wire. For example, the strength of the high-strength (HT) wire is 15% higher than that of the normal (NT) type, and the super high-strength (ST) type is 25% stronger than the NT type, and the extremely high-strength (UT) type. It is 34% stronger than the NT model. On the other hand, the development of high-strength bead wire, such as the strength of 1.55 can reach 2250 N/mm2, each tire can reduce the amount of wire about 0.45 kg.
Wei Jingxun, the technical minister of Guangzhou Huanan Rubber Tyre Co., Ltd., told reporters that Kevlar is the most promising type of tire frame material. Aramid with high tensile modulus and strength, high temperature resistance, puncture resistance, has a very prominent dimensional stability, low reciprocating energy loss, can be in the band, belt, carcass, etc. Use at the site and can be lightweight compared to existing materials. If the aramid material is completely used instead of the steel cord, cord fabric, and bead wire in the tire, the tire can be reduced by 30%.
Rayon has been used in a large number of tires and is located in nylon and polyester due to its high moisture absorption, cost, strength, and poor fatigue properties. However, nearly 90% of high-performance tires in the European market still use rayon. Compared with polyester, rayon has advantages in terms of dimensional stability and high temperature resistance, and has low heat generation, which can give tires better uniformity, safety, and stable wet skid resistance and noise level. Excluding cost factors, rayon is the best choice for current high-performance tires except for aramid.
High-strength polyester is also favored by the industry. Xu Chunhua, former vice president of the China Rubber Association, said that polyethylene naphthalate (PEN) is a new type of high-strength, high-modulus, low-shrinkage material with strength equal to that of nylon, with a modulus double that of polyester and rayon. 4 times the nylon, shrinkage is 50% of polyethylene terephthalate (PET), and thermal stability, good dimensional stability, good chemical stability, fatigue resistance is better than rayon and aramid, As a radial tire frame material, it can improve the operability and service life of tires, reduce road noise, make tires lightweight, and reduce rolling resistance.
In addition, the application of ultra-high-strength fiber poly-p-phenylene benzobisoxazole (BPO) in the rubber industry has begun to gain attention.
Long/ Wide Span Shelving,Storage Racks,Lights & Lighting,Span Shelving
Storage Racks ,Warehouse Co., Ltd. , http://www.nbpalletrack.com