新研究对保存古代金属人工制品的常见技术提出了怀疑

聚合物涂料（包括环氧树脂，聚氨酯和丙烯酸酯）通常用于保护金属伪影免受长期暴露于光，热，氧气和湿度。它们是轻巧，透明，水密的，可以强烈粘附在其保存的材料上。

A new study has cast into doubt a common technique used in the integration of old metal artifacts.

一项新的研究使人们怀疑一种用于整合旧金属伪像整合的通用技术。

The "momentous and concerning" findings, which are published in American Chemical Society (ACS) Focal Point, indicate that some transparent resin coatings react with iron-containing metals and can cause damage.

在美国化学学会（ACS）焦点上发表的“重要和有关”的发现表明，某些透明的树脂涂层与含铁金属反应，并可能造成损害。

A crew from China's Beijing University of Chemical Technology created a non-invasive fluorescence imaging technique that reveals the early signs of the harmful chemical reactions. It could be used to decide on the integration state and possible dangers for other artifact preservation, decreasing the harm to the valuable artifacts.

中国北京化学技术大学的一名工作人员创建了一种非侵入性荧光成像技术，揭示了有害化学反应的早期迹象。它可以用来确定整合状态和对其他人工制品保存的可能危险，从而减少对有价值的人工制品的伤害。

Polymeric coatings, together with epoxy, polyurethane, and acrylics, are commonly used to shield metal artifacts from long-term exposure to mild, heat, oxygen, and humidity. They are lightweight, transparent, watertight, and can adhere powerfully to the materials they preserve.

聚合物涂层以及环氧树脂，聚氨酯和丙烯酸酯通常用于屏蔽金属伪像免受长期暴露于轻度，热，氧气和湿度。它们是轻巧，透明，水密的，可以强大地粘附在其保存的材料上。

However, there has been restricted analysis of what occurs to the coatings as they age and how this impacts the metal artifacts. This is because it is challenging to monitor what is happening at the boundary where the materials make contact.

但是，对涂料随着年龄的增长以及这如何影响金属伪像的涂料发生了限制分析。这是因为监视材料接触的边界处发生的事情是具有挑战性的。

The new 3-dimensional fluorescence imaging technique, which is described in ACS Focal Point, indicates early signs of corrosion on iron-containing metal.

新的3维荧光成像技术在ACS焦点中进行了描述，表明了含铁金属腐蚀的早期迹象。

The researchers coated forged iron with the acrylic resin B72—the most widely used polymer in metal artifacts—and sped up its ageing method by applying UV and warmth for 30 hours. They observed no fluorescence on freshly coated forged iron, but the fluorescence depth at the resin-metal interface increased steadily after 3 hours.

研究人员用丙烯酸树脂B72（金属伪像中使用最广泛的聚合物）涂了锻铁，并通过涂抹紫外线和温暖30小时来加速其老化方法。他们观察到新鲜涂层的锻铁没有荧光，但是三个小时后，树脂金属界面的荧光深度稳定增加。

"It is surprising to acknowledge that the aged polymers can generate hazardous carboxyl teams and responsive hydroxyl radicals, inducing the oxidation and corrosion of the metal artifacts," the researchers write.

研究人员写道：“令人惊讶的是，老化的聚合物可以产生危险的羧基和响应式羟基自由基，从而诱导金属伪像的氧化和腐蚀。”

"In turn, the generated metallic ions could further worsen the ageing of polymer coatings."

“反过来，产生的金属离子可能会进一步恶化聚合物涂层的衰老。”

They carried out the same experiment on a rusty iron coin about 1000 years old, from the Chinese Northern Tune Dynasty, and found that the aged polymer coating made the artifact rustier.

他们从中国北部的曲子王朝进行了大约1000年的生锈铁币进行同样的实验，发现老化的聚合物涂层使工件变得生锈了。

"These findings raised a timely alarm for the integration potential and possible menace of polymer coatings on metal artifacts," the authors write.

作者写道：“这些发现引起了及时的警报，以使聚合物涂料在金属伪像的范围内的整合潜力和可能的威胁。”

They advise that more analysis must be done to decide on how coatings can be optimised for artifact integration.

他们建议必须进行更多分析以决定如何优化涂料以进行工件整合。

"We should strengthen the analysis on the modification of polymer coatings, together including the structural design and preparation optimisation, to exclude the existence of defects or pores in the polymers," they write.

他们写道：“我们应该加强对聚合物涂层的修饰的分析，包括结构设计和制备优化，以排除聚合物中缺陷或孔的存在。”

"Employment of a particular stabiliser, or anti-ageing additives, into polymer coatings is also needed. These actions would advertise the protective potential of polymer coatings and decrease the secondary harm to cultural artifacts."output: When precious relics are unearthed by archaeologists, it’s the job of conservators to ensure they’re passed on to future generations by protecting them from further degradation.

“还需要将特定稳定剂或抗衰老添加剂涂抹到聚合物涂料中。这些动作将宣传聚合物涂料的保护潜力，并减少对文化伪像的次要危害。”输出：当宝贵的遗物被考古学家发掘出来时，这是由考古学家发掘的，这是确保将来通过保护他们的保护者的工作，以确保他们能够将其进一步保护。

But a new study has cast into doubt a common technique used in the conservation of ancient metal artefacts.

但是，一项新的研究使人们怀疑一种用于保护古代金属人工制品的通用技术。

The “significant and alarming” findings, which are published in American Chemical Society (ACS) Central Science, indicate that some clear resin coatings react with iron-containing metals and can cause damage.

在美国化学学会（ACS）中央科学上发表的“重要而令人震惊的”发现表明，一些透明的树脂涂层与含铁金属的反应，并可能造成损害。

A team from China’s Beijing University of Chemical Technology developed a non-invasive fluorescence imaging strategy that reveals the early signs of the damaging chemical reactions.

中国北京化学技术大学的一个团队开发了一种非侵入性荧光成像策略，揭示了破坏性化学反应的早期迹象。

They say it could be used to determine the “conservation state and potential risks for other artifact preservation, minimising the damage to the valuable artifacts.”

他们说，它可以用来确定“保护状态和其他人工制品保存的潜在风险，从而最大程度地减少对宝贵人工制品的损害。”

Polymer coatings – including epoxy, polyurethane, and acrylics – are commonly used to protect metal artifacts from long-term exposure to light, heat, oxygen and humidity. They are lightweight, transparent, watertight, and can adhere strongly to the materials they preserve.

聚合物涂料（包括环氧树脂，聚氨酯和丙烯酸酯）通常用于保护金属伪影免受长期暴露于光，热，氧气和湿度。它们是轻巧，透明，水密的，可以强烈粘附在其保存的材料上。

However, there has been limited research on what happens to polymer coatings as they age and how this affects iron-containing metals. This is because it is difficult to monitor what is happening at the boundary where the materials contact each other.

但是，关于聚合物涂料随着年龄的增长以及这如何影响含铁金属的研究有限。这是因为很难监视材料相互接触的边界处发生的事情。

The new 3-dimensional fluorescence imaging technique, which is described in ACS Central Science, indicates early signs of corrosion and rust on iron-containing metal.

在ACS中央科学中描述的新型3维荧光成像技术表明，含铁金属的腐蚀和生锈的早期迹象。

The researchers coated cast iron with the acrylic resin B72 – the most widely used polymer in metal artifacts – and sped up its ageing process by applying UV and warmth for 30 hours. They observed no fluorescence on freshly coated cast iron, but the fluorescence intensity at the resin-metal interface increased steadily after 3 hours.

研究人员将铸铁与丙烯酸树脂B72（金属伪像中最广泛使用的聚合物）涂覆，并通过涂抹紫外线和温暖30小时来加速其衰老过程。他们观察到新鲜涂层的铸铁没有荧光，但是3小时后树脂金属界面的荧光强度稳定增加。

“It is surprising to acknowledge that the aged polymers can generate hazardous carboxyl groups and reactive hydroxyl radicals, inducing the oxidation and corrosion of the metal artifacts,” ,” the researchers write.

研究人员写道：“令人惊讶的是，老化的聚合物可以产生有害的羧基和反应性羟基自由基，从而诱导金属伪像的氧化和腐蚀。”

“In turn, the generated metallic ions could further aggravate the aging of polymer coatings.”

“反过来，产生的金属离子可以进一步加剧聚合物涂层的衰老。”

They carried out the same experiment on a rusty iron coin about 1000 years old, from the Chinese Northern Song Dynasty, and found that the aged polymer coating made the artifact rustier.

他们从中国北部歌曲王朝的一枚生锈的铁硬币进行了同样的实验，发现老化的聚合物涂层使工件变得生锈了。

“These findings raised a timely alarm for the conservation ability and potential threat of polymer coatings on metal artifacts,” the authors write.

作者写道：“这些发现引发了及时的警报，以征求金属伪像的聚合物涂料的潜在威胁。”

They suggest more research must be done to determine

他们建议必须进行更多研究以确定