發(fā)布時間：2018-08-24 13:47

【摘要】：近幾年,隨著乙烯工業(yè)的快速發(fā)展,對于其生產(chǎn)過程中副產(chǎn)物的合理應(yīng)用成為待要解決的重要問題之一。如果能對作為其工業(yè)生產(chǎn)中產(chǎn)生的副產(chǎn)物乙烯焦油進行合理的應(yīng)用,可以提高乙烯生產(chǎn)的經(jīng)濟效益,當(dāng)前其主要被當(dāng)作工業(yè)燃料使用,不僅利用率低,而且污染環(huán)境。乙烯焦油主要成分是短側(cè)鏈、碳氫比高的多環(huán)芳烴,是制備COPNA(多環(huán)多核芳香烴)樹脂的優(yōu)質(zhì)原料。而且用乙烯焦油為基體合成的COPNA樹脂,具有很好熱穩(wěn)定性、較好粘結(jié)性能,可以用來制作粘結(jié)性能相關(guān)的材料。當(dāng)前,COPNA樹脂大多是用乙烯焦油作為原料,對苯二甲醇、苯甲醛或三聚甲醛等為交聯(lián)劑,對甲苯磺酸為催化劑,在N2氛圍下合成COPNA樹脂。COPNA樹脂的軟化點在110-120℃之間,殘?zhí)恐翟?0-35%之間,β樹脂含量在10-20%之間,這說明利用乙烯焦油合成的COPNA樹脂擁有良好的耐熱性和粘結(jié)性,為乙烯焦油樹脂的進一步應(yīng)用奠定基礎(chǔ)。但是交聯(lián)劑和催化劑的成本較高,不利于乙烯焦油樹脂的工業(yè)化應(yīng)用,也影響了乙烯焦油樹脂的進一步的研究,因此尋找新型的交聯(lián)劑和催化劑,是將COPNA樹脂工業(yè)化生產(chǎn)必須解決的問題。本文以乙烯焦油為原料,先采用減壓蒸餾方式,除去乙烯焦油組分中輕組分(≤300℃餾分),從而得到含有較多重組分的乙烯重質(zhì)焦油,再使其與雙醛淀粉,在木質(zhì)素磺酸催化下交聯(lián)合成COPNA樹脂。運用IR、TG測試分析,探討原料反應(yīng)前后的結(jié)構(gòu)變化及COPNA樹脂的反應(yīng)機理,通過對乙烯焦油樹脂殘?zhí)恐�、軟化點和β樹脂含量等參數(shù)的測試,考查了其耐熱性和粘結(jié)性等性能,并與目前樹脂的合成工藝進行比較。實驗研究發(fā)現(xiàn),用經(jīng)過減壓蒸餾處理后得到的乙烯重質(zhì)焦油為原料,加入占原料質(zhì)量分?jǐn)?shù)10%的雙醛淀粉,以及占原料質(zhì)量分?jǐn)?shù)12%的木質(zhì)素磺酸,在交聯(lián)時間為5h,交聯(lián)溫度為160℃的條件下,合成COPNA樹脂性能較好。乙烯焦油樹脂的軟化點為122.87℃,β樹脂含量為23.7%,殘?zhí)恐禐?1.79%,與當(dāng)前類似的COPNA樹脂相比,本文合成的COPNA樹脂,在軟化點溫度和β樹脂含量方面均有提高,殘?zhí)恐到咏?因此該樹脂具有更好的耐熱性和粘結(jié)性,本研究為COPNA樹脂的工業(yè)化生產(chǎn)提供了新途徑。
[Abstract]:In recent years, with the rapid development of ethylene industry, the rational application of by-products in the production process has become one of the important problems to be solved. If ethylene tar, a by-product produced in its industrial production, can be reasonably applied, the economic benefit of ethylene production can be improved. At present, it is mainly used as an industrial fuel, which not only has low utilization ratio, but also pollutes the environment. Polycyclic aromatic hydrocarbons (PAHs) with short side chains and high hydrocarbon ratio are the main components of ethylene tar, which is a good raw material for the preparation of polycyclic polynuclear aromatic hydrocarbons (COPNA) resins. Moreover, the COPNA resin based on ethylene tar has good thermal stability and good bonding property, so it can be used to make materials related to adhesive properties. At present, COPNA resin is synthesized from ethylene tar, p-benzaldehyde, p-toluenesulfonic acid, p-toluene sulfonic acid, p-benzaldehyde, p-toluenesulfonic acid as crosslinking agent and ethylene tar as raw material. The softening point of COPNA resin is between 110 鈩，

本文編號：2201005