Super durable paint-repellent coating for long life anti-graffiti protection (PRISTINE)

涂鸦每年给英国经济造成的损失超过10亿GB，整个欧盟的成本约为53亿GB/年，美国的涂鸦成本为91.6亿GB/年(Valspar，2015)，澳大利亚的涂鸦成本为14.8亿GB/年(Keep Australia Beautiful，2019年)，基于涂鸦的破坏行为正在上升，英国交通警察在2018年第一季度记录了自2010年以来最高的攻击事件(389起攻击)。涂鸦往往出现在车辆、车站、隧道、桥梁、轨道边墙和商业/住宅楼上。在火车、铁路和建筑物上涂鸦是行业和公共机构的一项主要经济成本，他们必须将所有涂鸦从他们的财产中移除。它还对社会产生了巨大影响，从负面影响人们对地区的看法到涂鸦涂鸦者侵入铁路线并最终导致死亡的事件增加。目前的反涂鸦涂层要么是牺牲品，要么是永久性的。牺牲性涂层虽然便宜，但需要花费大量的长期劳动力成本来定期移除和重复使用，以确保达到最佳性能。永久性涂层也会产生长期的清洁成本，许多涂层需要特定的去除解决方案，这些解决方案通常由侵略性化学物质制成，从而导致环境和健康问题。虽然有许多防涂鸦涂层可用，但制造商和供应商正在寻找更环保的替代方案，涂鸦及其日益增长的全球清除成本仍然是一个亟待解决的问题。因此，存在着改进现有抗涂鸦涂层的机会和需要。原始项目正在通过开发一种耐用的拒漆涂层来研究永久防涂鸦涂层的发展，它在耐环境方面与市面上的涂料竞争，但使用更环保的材料改善了拒漆性和易于清洁的特性。这样的涂料将提供真正的防涂鸦表面。这将对包括交通、建筑和汽车在内的多个行业产生深远影响。成功实现一种更高效的涂层以减少清洁要求，可以减少由清理团队造成的铁路乘客延误，消除政府清除涂鸦不断增加的成本(仅伦敦每年就在涂鸦清洁上花费1亿GB)，减少对苛刻清洁化学品的要求，保护涂鸦清洁工的环境和健康，并减少涂鸦艺术家侵入铁路线，因为他们的画布不那么吸引人，这反过来将防止致命事故的发生。PRISTINE技术的基础是在现有涂料树脂中加入新型绿色功能添加剂，使其高度排斥喷漆，同时提供耐用涂层。

Graffiti costs over £1bn/year to the UK economy, ~£5.3bn/year EU-wide, £9.16bn/year in the US (Valspar, 2015), and £1.48bn/year in Australia (Keep Australia Beautiful, 2019) and graffiti-based vandalism is on the rise, with British Transport Police recording the highest attacks in Q1, 2018 (389 attacks) since 2010\. Graffiti tends to appear on rolling stock, stations, tunnels, bridges, trackside walls and commercial/residential buildings.Graffiti on trains, railways and buildings is a major cost financially to both industry and public bodies who are required to remove all occurrences from their property. It also has a huge impact socially, ranging from negatively affecting the perception of areas to increased incidents of graffiti taggers trespassing onto rail lines that have ultimately led to deaths.Current anti-graffiti coatings are either sacrificial or permanent.1. Sacrificial coatings, while cheap, incur large long-term labour costs for periodic removal and re-application to ensure peak performance.2. Permanent coatings also incur long term cleaning costs, and many require specific removal solutions that are often made of aggressive chemicals resulting in both environmental and health concerns.Whilst many anti-graffiti coatings are available, manufacturers and providers are looking to greener alternatives and there is still a significant issue with graffiti and its growing global costs in terms of removal to be solved.Therefore, there exists an opportunity and need to improve on current anti-graffiti coatings.The PRISTINE project is looking into the advancement of permanent anti-graffiti coatings, by developing a durable paint repellent coating, which competes with commercially available coatings in terms of environmental resistance but has improved paint-repellency and easy clean characteristics using greener materials.Such a coating would provide a true anti-graffiti surface. This will have far-reaching impact across a wide range of sectors, including transport, construction and automotive. Successful achievement of a more efficient coating that reduces cleaning requirements could reduce rail passenger delays caused by removal teams, eliminate the increasing costs to governments to remove graffiti (London spends £100 million per year alone on graffiti cleaning), reduce the requirement of harsh cleaning chemicals, safeguarding the environment and health of graffiti cleaners, and reduce trespassing onto the rail lines by graffiti artists as their canvases would be less attractive, which in turn would prevent fatal incidents from occurring.PRISTINE technology is based on incorporating novel greener functional additives into existing coating resins making them highly repellent to spray paint, whilst providing a durable coating.