什么是UV湿气双重固化胶水?紫外线湿气双重固化胶粘剂有什么特点及优势？

UV胶固化原理是UV固化材料中的光引发剂(或光敏剂)在紫外线的照射下吸收紫外光后产生活性自由基或阳离子，引发单体聚合、交联和接支化学反应，使UV胶在数秒钟内由液态转化为固态。所以UV胶使用时固化深度有限，在有色系统和不透明原料中难以使用，固化对象的形状也不能太杂乱，不然全造成固化不完全达不到所要求的特性等问题。

光固化树脂曝光时会进行自由基聚合，达到硬化的目的。许多应用有边边角角的阴影，有照不到光线的疑虑，树脂没办法进行聚合。没有反应的光硬化树脂可能会有挥发物产生，会浸润塑胶的成分造成龟裂，也可能影响零件的电气性质…，www.huvglue.com 造成应用上的限制。UV湿气双重固化树脂的结构除了有压克力基外，还有异氰酸酯这个官能基，可以和空气中的水分反应，形成胺基甲酸酯而硬化。换句话说，它能够在光线的照射下快速硬化，没有曝光的地方3-5天后靠空气中的湿气硬化，扩展了光硬化树脂应用的领域。

UV加湿气双重固化UV胶是经过两个独立的具有不同反响原理的阶段来操作的。其间一个阶段是经过UV光反响，另一阶段是经过热固化、湿气固化、氧化固化或厌氧固化反响等暗反响来进行的。

这样就可以使用UV光使系统快速定型或到达“表干”，而使用暗反响使“暗影”部分或内层充沛固化，到达“实干”。两层固化扩展了UV胶在不透明介质间、形状杂乱的基材、超厚胶层及有色胶层中的使用。

UV加湿气固化的运用特点：

1.UV胶在紫外光照下可以快速固化，有快速定位，效率高等优势。

2.在UV胶暂时定位后，通过湿气固化达到客户要求的强度。

3.按照以上逻辑可以有效解决生产工艺问题。

4.更好的应用适应性，解决一些特殊产品的应用要求

华创材料-专业胶粘剂研发生产企业，始于1999年，因为专业，相信我们会做得更好！

The curing principle of UV glue is that the photoinitiator (or photosensitizer) in UV curing materials absorbs UV light and produces living free radicals or cations, which initiate monomer polymerization, crosslinking and branching chemical reactions, so that the UV glue can be transformed from liquid state to solid state in a few seconds. Therefore, the curing depth of UV adhesive is limited, and it is difficult to use in colored system and opaque raw materials, and the shape of cured object should not be too messy, otherwise the curing can not completely meet the required characteristics and other problems.

The UV curing resin will undergo free radical polymerization when exposed to light to achieve the purpose of hardening. Many applications have corner shadow, there is no light, resin can not be polymerized. No reaction of the light hardening resin may have volatile matter, will infiltrate the plastic components, cause cracking, may also affect the electrical properties of parts , www.huvglue.com It causes the limitation of application. In addition to acrylic group, the structure of UV moisture double curing resin also has isocyanate, which can react with water in the air to form carbamate and harden. In other words, it can quickly harden under the irradiation of light, and 3-5 days after exposure, it will harden by moisture in the air, which expands the application field of light hardening resin.