查看完整版本: 蜡的知识以及打蜡时的注意事项

蜡的知识以及打蜡时的注意事项

　打蜡确实有益于汽车的维护和保养，但是目前许多车主对车蜡还有一些片面的认识，比如有些车主会给车频繁打蜡，有些则干脆不打，还有一些车主认为，车蜡越贵越好，因此专挑进口车蜡使用。其实这些做法是不恰当的。下面介绍一些车蜡的相关知识，以及打蜡时的注意事项。

　　首先是如何选择车蜡。目前，市场上车蜡种类繁多，有固体和液体之分，车蜡质量也不一样。各种车蜡性能不同，其作用与效果也不一样，所以在选用时必须要慎重，选择不当不仅不能保护车体，反而使车漆变色。

　　一般情况下，应根据车蜡的作用特点、车辆的新旧程度、车漆颜色及行驶环境等因素综合考虑。新车最好用彩涂上光蜡以保护车体的光泽和颜色，夏天时则宜选用防紫外线车蜡，行驶环境较差时应用保护作用突出的树酪蜡。普通车辆选用普通的珍珠色或金属漆系列车蜡即可，高档汽车则应选用高档的车蜡，否则对车体有损害。当然，选用车蜡时还必须考虑与车漆颜色相适应，一般深色车漆选用黑色、红色、绿色系列的车蜡，浅色车漆选用银色、白色、珍珠色系列车蜡。

　　应当注意的是，新车不要随便打蜡。有人购回新车后便给车辆打蜡，这是不足取的。因为新车本身的漆层上已有一层保护蜡，过早打蜡反而会把新车表面的原装蜡除掉，造成不必要的浪费，一般新车购回五个月内都不必急于打蜡。

　　其次要掌握好打蜡频率。由于车辆行驶的环境、停放场所不同，打蜡的时间间隔也应有所不同。一般有车库停放，多在良好道路上行驶的车辆，每3—4个月打一次蜡即可。露天停放的车辆，由于风吹雨淋，最好每2—3个月打一次蜡。通过触摸也能进行判断，一般而言，用手触摸车身感觉不光滑时，就可再次打蜡。

　　打蜡前最好用洗车水清洗车身外表的泥土和灰尘。切记不能盲目使用洗洁精和肥皂水，因其中含有的氯化钠成分会侵蚀车身漆层、蜡膜和橡胶件，使车漆失去光泽、橡胶件老化。如无专用的洗车水，可用清水清洗车辆，将车体擦干后再上蜡。

　　应在阴凉处给车打蜡，保证车体不致发热。因为随着温度的升高，车蜡的附着性变差，会影响打蜡质量。

　　上蜡时，应用海绵块涂上适量车蜡，在车体上直线往复涂抹，不可把蜡液倒在车上乱涂或做圆圈式涂抹。一次作业要连续完成，不可涂涂停停。一般蜡层涂匀5—10分钟后就可用新毛巾擦亮，但快速车蜡应边涂边抛光。

　　车身打蜡后，在车灯、车牌、车门和行李箱等处的缝隙中会残留一些车蜡，使车身显得很不美观。这些地方的蜡垢若不及时擦干净，还可能产生锈蚀。因此，打完蜡后一定要将蜡垢彻底清除干净，这样才能得到完美的打蜡效果。

China not to sacrifice food for fuel: energy experts

China not to sacrifice food for fuel: energy experts
Updated: 2008-06-06 07:05
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MANILA -- China has no plan to sacrifice food for fuel, the country's energy experts said on Thursday amid controversy over biofuel.

"Food security comes first in China, more important than fuel," said Song Yanqin, a co-drafter of China's national energy strategies, at Asia Clean Energy Forum 2008 sponsored by the Asian Development Bank (ADB) in Manila.
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"Biofuel," as said in the ADB's publication "Development Asia", has become a new buzz word all over the world, from the Philippines to Brazil, from the United States to the European Union.

Produced from agricultural crops such as maize, palm oil, sugarcane and jatropha, biofuel are used to run factories, power stations and vehicles. Countries that have the right conditions are setting aside millions of hectares of land for new plantations as international demand for prominent biofuel.
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However, there is another side of the coin. The development of biofuel is considered as one reason for the global shortage of grain which drives food prices high in many countries. In the Philippines' southern region of Mindanao, for instance, rice prices have gone up to 50 pesos ($1.14) per kilogram.

"Biofuel is sensitive," said Song, especially in China, where 1. 3 billion people live on only 120 million hectares of arable land.
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"Actually, in the global context, biofuel is still a controversial topic calling for serious study," said Zhou Dadi, an advisor to China's National Energy Leading Group.

At the same forum, Dan Millison, a US designer of higher-tech alcohol plants, said "food versus fuel is 99-percent noise."

"Do your homework and get a noise filter. Time magazine is not your key reference document," he addressed the audience via a video-conferencing system.  

"This problem is complicated," said Eric Usher, an official of United Nations Environment Program, adding that the dispute over biofuel will not be solved in a short time.

At the forum, with the theme of "Investing in Solutions that address Climate Change and Energy Security," Zhou Dadi explicated the sustainable energy strategy of China, giving priority to " conservation."

"Conservation comes first in the sustainable energy strategy of China," said the adviser, adding that specific and detailed regulations for energy conservation have been made in the country.

China has also set a target of 20 percent-intensity decrease for the 2006-2010 national development plan. That is, the country has to realize 4.4-percent energy-efficiency improvement annually in the five years, Zhou said.

Compared with the global annual figure of 1.2 percent over the past 30 years, the target for China is really impressive and encouraging, the adviser added.