The smog in Chinese megacities poses a health hazard. This has led the authorities to introduce electric buses on local public transport systems. And Sika is on board.

China’s big cities are suffering from the effects of smog. With fine particulate levels at record highs, many people won’t venture outside without their breathing masks on. Taking up the fight against air pollution, China is forcing through the introduction of electric buses on local public transport systems. Shenzhen, a metropolis in the south of the country with a population of 12 million, is pursuing a particularly ambitious program: from 2018 the city has a fully electronic bus fleet. More than 14,000 diesel buses have been replaced.

Bus in Shenzhen

Shenzhen is one of China’s biggest destinations for foreign investment and one of the world’s fastest-growing cities. The entire local fleet of 14,000 buses was switched to electric drive from 2018.

Highly effective fire protection

Fire safety requirements are stringent for electric buses. “The battery is a particular concern given the possible risk of a heat build-up. Sika offers technologies that can increase the level of safety,” says Morten Muschak, Head of Tooling and Composites with Sika. Applying the fire protection coating Sika® Unitherm® Platinum to the battery case absorbs developing heat, prevents a battery fire from spreading, and prolongs evacuation time to up to 25 minutes. This can save lives. If a bus catches fire, the passenger compartment heats up to 1,000 °C within one minute. Sika® Pyroplast® shields the individual battery cells. Sika also has innovative adhesives and sealants to ensure efficient installation of the battery in the vehicle. Big-name e-bus manufacturers such as BYD, Yutong, and King Long already depend on Sika solutions and are benefiting from increased passenger safety and lighter-weight batteries.

70% ALLER NEUEN STADTBUSSE WERDEN GEMÄSS STUDIEN BIS 2030 EINEN EMISSIONSFREIEN ANTRIEB HABEN
25 MINUTEN LANG KANN DIE BESCHICHTUNG DES BATTERIEGEHÄUSES MIT Sika® Unitherm® Platinum DIE AUSBREITUNG EINES MÖGLICHEN BATTERIEFEUERS VERHINDERN
Diagramm über Elektrobusse in China