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

涂鸦对英国经济的成本超过10亿英镑/年，欧盟范围内约为53亿英镑/年，美国为91.6亿英镑/年（Valspar，2015年），澳大利亚为14.8亿英镑/年（保持澳大利亚美丽，2019年），基于涂鸦的破坏行为正在增加，英国交通警察记录了自2010年以来2018年第一季度的最高袭击（389次袭击）。灰尘往往出现在铁路车辆、车站、隧道、桥梁、轨道侧壁和商业/住宅建筑物上。火车、铁路和建筑物上的灰尘是工业和公共机构的主要经济成本，他们需要从其财产中清除所有灰尘。它还对社会产生了巨大的影响，从负面影响区域的感知到涂鸦者侵入铁路线最终导致死亡的事件增加。目前的防涂鸦涂料要么是牺牲性的，要么是永久性的。1.牺牲涂层虽然便宜，但需要长期大量的劳动力成本来定期去除和重新涂覆，以确保最佳性能。2.永久性涂料也会产生长期的清洁成本，并且许多需要特定的去除解决方案，这些解决方案通常由腐蚀性化学品制成，从而导致环境和健康问题。虽然有许多防涂鸦涂料可用，但制造商和供应商正在寻找更环保的替代品，并且在去除方面仍然存在涂鸦及其不断增长的全球成本的重大问题。因此，存在改进现有防涂鸦涂料的机会和需求。PRISTINE项目正在研究永久性防涂鸦涂料的进展，通过开发耐久的油漆排斥涂料，其在耐环境性方面与市售涂料竞争，但具有改进的涂料，使用更环保的材料，具有防水性和易于清洁的特性。这样的涂层将提供真正的防涂鸦表面。这将对包括运输、建筑和汽车在内的广泛行业产生深远影响。成功实现更有效的涂层，减少清洁要求，可以减少由清除团队造成的铁路乘客延误，消除政府清除涂鸦的成本增加（伦敦每年仅在涂鸦清洁上就花费1亿英镑），减少对苛刻清洁化学品的需求，保障涂鸦清洁人员的环境和健康，并减少涂鸦艺术家非法闯入铁路线，因为他们的画布将不那么吸引人，这反过来又会防止致命事故的发生。PRISTINE技术是基于将新型绿色功能添加剂加入现有的涂料树脂中，使其对喷漆具有高度排斥性，同时提供耐用的涂层。

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.