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3D打印用脂環(huán)族環(huán)氧樹脂 S-28
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更新日期： 2022-5-26 |
3D打印技術/3D print technology
光固化3D打印技術是3DP領域中制件成型效率和精度最高的一種技術。該材料目前存在的主要問題是韌性差和固化體積收縮率高。
UV-curing 3D printing is considered as the most precise and most efficient modeling and forming technology in the 3DP field. Main problems of this material are poor toughness and high cured volume shrinkage.
常用預聚物/Common prepolymers
常用預聚物分為以下幾種類型，它們的性能特點也各不相同。
Commonly used prepolymers can be divided into the following types, and their performance characteristics are also different.
目前常用的陽離子型預聚物是環(huán)氧樹脂和乙烯基醚類樹脂。乙烯基醚類樹脂由于固化速度慢，適用范圍窄。環(huán)氧樹脂分為縮水甘油醚（或酯）類環(huán)氧樹脂和脂環(huán)族環(huán)氧樹脂等兩類。縮水甘油醚（或酯）類環(huán)氧樹脂由于活性低、反應慢和生成的聚合物分子量低在陽離子光固化領域一直處于劣勢地位。脂環(huán)族環(huán)氧樹脂由于具有活性高、反應過程中產(chǎn)生的收縮小、粘度低及毒性低等優(yōu)點，一直在陽離子光固化領域處于優(yōu)勢地位。
The commonly used cationic prepolymers are epoxy resins and vinyl ether resins. Vinyl ether resins have a narrow application range due to their slow curing speed. Epoxy resins are divided into two categories: glycidyl ether (or ester) epoxy resins and cycloaliphatic epoxy resins. Glycidyl ether (or ester) epoxy resins have always been at a disadvantage in the field of cationic UV curing due to their low activity, slow reaction and low molecular weight of the resulting polymer. Cycloaliphatic epoxy resins have always been in a dominant position in the field of cationic UV curing due to their high activity, small shrinkage during reaction, low viscosity and low toxicity, etc.
新納希S-28/Synasia S-28
S-28
CAS-3130-19-6
Syna-Epoxy 28是一種標準的脂環(huán)族環(huán)氧樹脂，適用于需要更高粘度或更柔韌薄膜的眾多應用中。
· 可以進行光固化
· 可以和酸酐進行熱固化
· 韌性高
Syna-Epoxy 28 is a standard cycloaliphatic epoxy resin suitable for use in many applications, where higher viscosity or more flexible films are required.
? UV curable
? Thermally curable with anhydrides
? High toughness
規(guī)格參數(shù)
Specifications
相關實驗研究
根據(jù)相關學者研究發(fā)現(xiàn)，選取環(huán)氧丙烯酸酯EA以及脂環(huán)族環(huán)氧樹脂S-28作為預聚物，由于S-28的粘度比EA小，因此加大其用量必然導致3D打印材料的粘度降低。S-28以陽離子聚合方式參加光固化反應，其光固化速度較自由基體系固化速度慢，隨著S-28含量增加，3D打印材料的光固化速度降低。自由基型預聚物環(huán)氧丙烯酸酯參加聚合反應時體積收縮率較陽離子型預聚物環(huán)氧樹脂體積收縮率大，所以隨著S-28含量增加，3D打印材料的體積收縮率降低。
Experimental research
According to the research, some scholars choose epoxy acrylate EA and cycloaliphatic epoxy resin S-28 as prepolymers. Since the viscosity of S-28 is lower than that of EA, increasing its dosage will inevitably lead to a decrease in the viscosity of 3D printing materials. S-28 participates in the UV-curing reaction by cationic polymerization, and its UV-curing speed is slower than that of free radical systems. With the increase of S-28 dosage, the UV-curing speed of 3D printing materials decreases. The volume shrinkage rate of free-radical epoxy acrylate prepolymer is larger than that of cationic epoxy resin prepolymer when it participates in the polymerization reaction. As the dosage of S-28 increases, the volume shrinkage rate of 3D printing materials decreases.
實驗結果
通過大量實驗研究和總結分析，選擇了力學性能佳的預聚物EA和S-28，稀釋效果較好的稀釋劑TMPTMA和DVE-3，引發(fā)自由基/陽離子混雜光固化體系效率高的ITX及Irgacure 250復配光引發(fā)劑，助引發(fā)劑6420-TF以及多羥基化合物PAS-12作為高韌性混雜固化型3D打印材料的主要組分。
Experimental results
After a large number of experimental studies and summary analysis, when the prepolymers EA and S-28 with good mechanical properties are selected, the diluents TMPTMA and DVE-3 can offer a better dilution effect. The photoinitiators ITX and Irgacure 250 are highly efficient in initiating free radical/cationic hybrid UV-curing systems. The co-initiator 6420-TF and polyhydroxy compound PAS-12 are also used as the main component of the high toughness hybrid cured 3D printing material.
南通新納希新材料有限公司是全球領先的脂環(huán)族環(huán)氧樹脂生產(chǎn)商，可提供S-06E、S-21、S-28等多種牌號，歡迎廣大客戶來電垂詢。
Nantong Synasia New Material Co., Ltd. is the world's leading manufacturer of cycloaliphatic epoxy resins. We can provide a variety of product grades such as S-06E, S-21, S-28, etc. Welcome all customers to contact or call us.
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