發(fā)布時間：2018-04-29 07:46

  本文選題：耐黃變 + 白色阻焊油墨��； 參考：《華南理工大學》2015年碩士論文

【摘要】：白色阻焊油墨是主要用于印刷LED產品線路板的特殊功能材料,主要起阻焊和反光作用。眾所周知,白色的反光效果最好,可盡可能減少光損,使光源更加節(jié)能�？墒怯捎诟邷啬忘S變性差,國內的生產廠家需將油墨做成藍白色,而高端的純白色阻焊油墨的產品與技術被國外大型企業(yè)壟斷。本研究的目的是克服高溫易黃變、白色體系因對光反射強而UV固化困難等技術難題,研制出具有自主知識產權的兩種不同類型(光成像及光固化型)白色阻焊油墨。首先合成光成像白色阻焊油墨用的耐高溫耐黃變堿溶性UV樹脂,從分子設計入手,選擇不帶苯基的具有良好耐高溫耐黃變性能同時兼顧其他性能的單體進行聚合反應,然后用丙烯酸、酸酐分兩步對該共聚物進行改性,制備三種堿溶性UV樹脂;發(fā)現(xiàn)催化劑加入方式、阻聚劑的種類等條件對合成堿溶性UV樹脂反應有顯著影響,單體的種類、酸值對堿溶性UV樹脂的耐熱性、Tg等性能影響較大;并用FT-IR、TG、DSC、GPC等圖譜表征其合成過程和性能。然后用上述自制的堿溶性UV樹脂作為基體樹脂進行配方研究,制成光成像白色阻焊油墨;發(fā)現(xiàn)堿溶性樹脂種類、樹脂的酸值、樹脂的粘度(分子量)、光引發(fā)劑的組成和配比、填料的種類和用量等對油墨性能有顯著影響;選定了油墨的基體樹脂為酸值在80-100之間,粘度范圍在30000-40000mpa·s(25℃)的SZ01-GMA-HEMA堿溶性UV樹脂并確定了綜合性能最佳的光成像白色阻焊油墨配方;油墨涂膜具有耐高溫且耐黃變、高反射率(86%)、高硬度(6H)、高附著力(一級)、易表干、易顯影、耐酸堿等特點,達到光成像白色阻焊油墨應用要求。最后進行脂環(huán)族環(huán)氧UV樹脂的合成及光固化型白色阻焊油墨的研究,選擇幾種液態(tài)脂環(huán)族環(huán)氧樹脂進行丙烯酸改性得到脂環(huán)族環(huán)氧UV樹脂,通過紅外光譜對其結構進行分析,用TG對其耐熱性進行分析;以上述自制UV樹脂配成油墨進行分析,考查了脂環(huán)族環(huán)氧UV樹脂種類、光引發(fā)劑的種類和用量、活性單體的種類和用量、固化時間等因素對油墨性能的影響,結果表明用AA-UV-TTA26制成的油墨配方各性能優(yōu)良并確定了各組份的最佳配比,所得光固化白色阻焊油墨硬度、附著力、耐高溫等性能俱佳。
[Abstract]:White welding resistance ink is mainly used for printing LED products circuit board special function material, mainly for resistance welding and reflective effect. As we all know, the best effect of white light reflection, as far as possible to reduce light loss, make light more energy-saving. However, due to the high temperature resistance to yellowing, domestic manufacturers need to make ink blue and white, and high-end pure white welding ink products and technologies are monopolized by large foreign enterprises. The purpose of this study is to overcome the technical problems of high temperature and yellowing, white system is difficult to be cured by UV because of its strong light reflection, and two different types of white resistance ink (light imaging and light curing) with independent intellectual property rights have been developed. First of all, the high-temperature yellowing resistant alkali-soluble UV resin for light imaging white resistance ink was synthesized. Starting with the molecular design, the monomer without phenyl was selected for polymerization, which had good resistance to high temperature and yellow resistance and other properties at the same time. Then the copolymers were modified with acrylic acid and anhydride in two steps to prepare three kinds of alkali-soluble UV resins. The acid value had a great effect on the heat resistance and TG of alkali-soluble UV resin, and the synthesis process and properties of the resin were characterized by FT-IRT TGX DSC-GPC spectra. Then using the alkali-soluble UV resin as the base resin to make the light imaging white resistance ink, it was found that the alkali soluble resin, the acid value of the resin, the viscosity of the resin (molecular weight, composition and proportion of photoinitiator), The type and amount of filler have a significant effect on the ink performance, the base resin of the ink is selected as SZ01-GMA-HEMA alkali-soluble UV resin with acid value between 80-100 and viscosity range of 25 鈩，

本文編號：1819047