OMNISTAB UV 1084—special UV absorbent for agricultural film

紫外線吸收劑是一種光穩(wěn)定劑，能選擇性地強(qiáng)烈吸收對(duì)聚合物有害的太陽(yáng)光及熒光光源中的紫外線部分，而本身具有高耐光性的有機(jī)化合物。按其結(jié)構(gòu)可分為水楊酸酯類、二苯甲酮類、苯并三唑類、取代丙烯腈類、三嗪類等,由于實(shí)用的光穩(wěn)定劑還需同時(shí)滿足多方面其他性能要求，因此工業(yè)上應(yīng)用最多的為二苯甲酮類和苯并三唑等類型的鄰羥基芳香化合物。鄰羥基芳香化合物紫外線吸收劑可形成分子內(nèi)氫鍵螯合環(huán)，其耐光性來自于他們能通過非常快速的激發(fā)態(tài)分子內(nèi)質(zhì)子轉(zhuǎn)移和高效無輻射去活過程進(jìn)行可逆酚式-醌式互變異構(gòu)轉(zhuǎn)換循環(huán)，從而有效的將激發(fā)能轉(zhuǎn)化為無害的熱能。

Ultraviolet absorbent is a kind of light stabilizer, which can selectively and strongly absorb the ultraviolet part of the sun light and fluorescent light source harmful to polymer, and has high light resistance. According to its structure, it can be divided into salicylic acid esters, diphenylketones, benzotriazoles, substituted acrylonitrile, triazines, etc. Because practical photostabilizers need to meet other performance requirements at the same time, the most widely used in industry are o-hydroxyl aromatic compounds, such as diphenylketones and benzotriazoles. The UV absorbers of o-hydroxyl aromatic compounds can form intramolecular hydrogen bond chelating ring, and their light resistance comes from their ability to carry out reversible phenol-quinone-tautomerism conversion cycle through very fast excited intramolecular proton transfer and efficient irradiated deactivation process, thus effectively converting excitation energy into harmless thermal energy.

淬滅劑指通過分子間的能量轉(zhuǎn)移（長(zhǎng)程能量轉(zhuǎn)移和接觸或碰撞或交換能量轉(zhuǎn)移兩種），迅速而有效地將激發(fā)態(tài)分子（單線態(tài)氧和三線態(tài)物質(zhì)）淬滅，使轉(zhuǎn)變成熱能或轉(zhuǎn)變成熒光或磷光，而輻射散失，回到基態(tài)的一類物質(zhì)，通過這一過程，使其免遭紫外線破壞，從而達(dá)到穩(wěn)定高分子材料的目的。猝滅劑主要是金屬絡(luò)合物，如二價(jià)鎳絡(luò)合物等，常和紫外線吸收劑并用起協(xié)同作用。因此，它有別于紫外線吸收劑（并不強(qiáng)烈吸收紫外線），且作用機(jī)理也不同于紫外線吸收劑（通過分子內(nèi)的結(jié)構(gòu)變化轉(zhuǎn)移能量），如常用鎳的有機(jī)化合物--UV1084，中文別名為2,2-硫代雙(4-叔辛基苯酚)正丁胺鎳鹽。

Quanching agent is a kind of material which through intermolecular energy transfer (long-term energy transfer and contact or collision or exchange energy transfer), quickly and effectively to excited state molecules(singlet and triplet state substances) quenching and converted into heat energy or into a fluorescence or phosphoresence, and radiation loss, return to the ground state. It can protect it from ultraviolet radiation and stabilize polymer material through this process. Most of quenching agents are metal complexes, such as divalent nickel complex, and often used with ultraviolet absorbent, to play a synergistic role. Therefore, it is different from ultraviolet absorbent (which does not strongly absorb ultraviolet radiation), and its mechanism of action is different from that of ultraviolet absorbent (Transfer energy through intramolecular structural change). For example, UV 1084, which is known as 2, 2-thio-bis (4-tert-octyl phenol) n-butylamine nickel salt in Chinese.

OMNISTAB UV 1084主要應(yīng)用于聚乙烯棚膜、農(nóng)膜，不僅具有抗紫外線輻射的作用，而且具有抗氧化劑的功能，具有較高的耐農(nóng)藥、耐酸性，在聚丙烯、聚乙烯纖維、人造草坪等領(lǐng)域具有廣泛應(yīng)用。它屬于淬滅劑類光穩(wěn)定劑，能夠有效轉(zhuǎn)移聚合物中生色基團(tuán)激發(fā)態(tài)能量并將其以無害的形式消散掉從而使聚合物免于光降解反應(yīng)。

OMNISTAB UV 1084 is mainly used in polyethylene film and agricultural film. It not only has the function of anti-ultraviolet radiation, but also has the function of anti-oxidant. It has a high resistance to pesticides and acid, and is widely used in polypropylene, polyethylene fiber, artificial lawn and other fields. It is a kind of light stabilizer which belong to quenching agent, which can effectively transfer the excited state energy of the chromogenic groups in the polymer and dissipate it in a harmless form, thus making the polymer immune to photodegradation.

OMNISTAB UV 1084著色性小對(duì)聚烯烴染料有螯合作用，可改善染色性，毒性低，對(duì)皮膚刺激性小，對(duì)常在高溫下使用或長(zhǎng)期經(jīng)受日曬的制品尤為適宜。也可以與其他形式的穩(wěn)定劑很好的配合使用尤其是紫外線吸收劑類產(chǎn)品。與聚烯烴產(chǎn)品具有極強(qiáng)的兼容性。使用在聚乙烯農(nóng)用薄膜和聚丙烯人造草坪上具有極高的穩(wěn)定性。

OMNISTAB UV 1084 has a small staining property, It chelates polyolefin dyes, it can improve dyeing properties, has low toxicity, and is less irritating to the skin. It is particularly suitable for products that are often used at high temperatures or subjected to prolonged exposure to the sun.It also works well with other forms of stabilizers, especially UV absorbers. It has strong compatibility with polyolefin products. It has high stability when used in polyethylene agricultural film and polypropylene artificial lawn.

此外，在PVC農(nóng)膜中, UV 1084經(jīng)常與DHT產(chǎn)品配合使用。DHT是一種鹵素凈化劑，可以有效吸收PVC在加工和使用過程中分解產(chǎn)生的HCL，提高PVC的熱穩(wěn)定性。而且DHT的含水率低，具有與烯烴相近的折射率，對(duì)透明烯烴的薄膜來說是非常適合的鹵素凈化劑。UV 1084搭配DHT一起使用時(shí)會(huì)產(chǎn)生長(zhǎng)期的耐氣候性。

In addition, in PVC agricultural film, UV 1084 is often used with DHT products. DHT is a halogen purifying agent, which can effectively absorb HCL generated by decomposition of PVC during processing and operating, and improve the thermal stability of PVC. In addition, DHT has a low water content and a similar refractive index to olefin, which makes it a very suitable halogen purifier for transparent olefin films. When we use UV1084 and DHT together, they produce long-term climate resistance.

更多產(chǎn)品細(xì)節(jié)，請(qǐng)參考產(chǎn)品技術(shù)說明書。青島德達(dá)志成化工有限公司是一家專業(yè)生產(chǎn)和銷售各類紫外線吸收劑、光穩(wěn)定劑和高端抗氧劑的公司，致力于為您提供一站式的添加劑服務(wù)。更多詳細(xì)信息，歡迎電話咨詢我司銷售團(tuán)隊(duì)！

For more details, please refer to the product specification. DELTACHEM(QINGDAO)CO., LTD is a professional manufacturer and distributor of various ultraviolet absorbent, light stabilizer and high-end antioxidant, committed to providing one-stop additive service for you. For more details, please call our sales team!