發(fā)布時(shí)間：2018-05-08 11:25

  本文選題：新型復(fù)合磷-氮協(xié)同阻燃劑 + 阻燃脲醛樹(shù)脂膠粘劑��； 參考：《東華大學(xué)》2015年碩士論文

【摘要】：膠合板作為我國(guó)家具、室內(nèi)裝飾的主要材料，其產(chǎn)量和需求量都在急劇增長(zhǎng)，但易燃性致命的弱點(diǎn)限制了它在許多領(lǐng)域的應(yīng)用。對(duì)于現(xiàn)有的膠合板阻燃處理技術(shù)也存在一些問(wèn)題，如：1）阻燃處理工藝復(fù)雜；2）阻燃劑顯著影響膠粘劑的膠合性能；3）阻燃劑易析出流失而喪失阻燃效果。因此，綜合性能良好的阻燃膠合板是目前膠合板阻燃研究領(lǐng)域的重點(diǎn)關(guān)注的問(wèn)題之一。 本文首先合成了新型復(fù)合磷-氮協(xié)同阻燃劑，并對(duì)其合成工藝進(jìn)行了探討和研究。在此基礎(chǔ)上，將新型復(fù)合磷-氮協(xié)同阻燃劑與改性脲醛樹(shù)脂膠粘劑機(jī)械混合制備了阻燃脲醛樹(shù)脂膠粘劑，重點(diǎn)研究了阻燃脲醛樹(shù)脂膠粘劑的理化性能、膠合性能和阻燃性能，得出以下結(jié)論： （1）理化性能研究表明：阻燃脲醛樹(shù)脂膠粘劑表現(xiàn)出良好的理化性能，隨著阻燃劑添加量的增加，阻燃脲醛樹(shù)脂膠粘劑的粘度隨時(shí)間的增加呈上升趨勢(shì)，，pH值呈現(xiàn)下降趨勢(shì)，固化時(shí)間和適用期呈現(xiàn)縮短趨勢(shì)，適用期大于6h，固含量和制備的阻燃膠合板含水率基本保持不變。 （2）膠合性能研究表明：通過(guò)檢測(cè)阻燃脲醛樹(shù)脂膠粘劑的浸漬剝離性和膠合性能實(shí)驗(yàn)發(fā)現(xiàn)，阻燃劑和固化劑添加量影響膠粘劑的膠合強(qiáng)度。在實(shí)驗(yàn)范圍內(nèi)，當(dāng)阻燃劑添加量為8%，固化劑氯化銨為0.2%，此時(shí)阻燃脲醛樹(shù)脂膠粘劑的膠合強(qiáng)度最高為1.31MPa，浸漬剝離合格率100%，均達(dá)到國(guó)家標(biāo)準(zhǔn)GB/T9846.3-2004《膠合板普通膠合板通用技術(shù)條件》的II類（≥0.7MPa）要求。 （3）阻燃性能研究表明：阻燃脲醛樹(shù)脂膠粘劑具有良好的阻燃能力。通過(guò)差熱重量分析（TG）和電鏡掃描（SEM）方式評(píng)價(jià)阻燃機(jī)理，發(fā)現(xiàn)阻燃脲醛樹(shù)脂膠粘劑能顯著降低木材熱解的失重速度，使熱解失重過(guò)程延長(zhǎng)；同時(shí)降低木材的熱解起始溫度，使熱解途徑向著有利于生成炭和不燃物質(zhì)方向轉(zhuǎn)變，阻燃劑同時(shí)在凝聚相和氣相起到了阻燃作用，阻燃效果良好，顯現(xiàn)出對(duì)木材阻燃保護(hù)的功能。 本文還研究了阻燃脲醛樹(shù)脂膠粘劑用于開(kāi)發(fā)阻燃實(shí)木復(fù)合地板及其制備技術(shù)，重點(diǎn)探討了阻燃實(shí)木復(fù)合地板阻燃性能和甲醛釋放量，得出結(jié)論如下： （1）甲醛釋放量研究表明：按照國(guó)家標(biāo)準(zhǔn)GBl8580-2001《室內(nèi)裝飾裝修材料人造板及其制品中甲醛釋放限量》和GB/T17659-1999《人造板及飾面人造板理化性能試驗(yàn)方法標(biāo)準(zhǔn)》檢測(cè)阻燃實(shí)木復(fù)合地板的甲醛釋放量為0.2mg/L，達(dá)到國(guó)家E0級(jí)標(biāo)準(zhǔn)（≤0.5mg/L）。 （2）阻燃性能研究表明：表面阻燃層具有顯著抵擋外部熱源向內(nèi)輻射的能力，對(duì)實(shí)木復(fù)合地板具有良好的阻燃防護(hù)作用。按照GB20286-2006《公共場(chǎng)所阻燃制品及組件燃燒性能要求和標(biāo)識(shí)》方法檢測(cè)其燃燒等級(jí)為B1級(jí)。 所有的試驗(yàn)結(jié)果表明阻燃脲醛樹(shù)脂膠粘劑制備技術(shù)滿足工業(yè)化生產(chǎn)要求，實(shí)際應(yīng)用性能良好，具有工業(yè)化生產(chǎn)可行性。
[Abstract]:Plywood, as the main material of furniture and interior decoration in China, its output and demand are increasing rapidly, but the fatal weakness of flammability limits its application in many fields. There are also some problems in the existing plywood flame retardant treatment technology, such as: 1) the flame retardant treatment process is complex, and the flame retardant significantly affects the adhesive's adhesive properties. 3) the flame retardant is easy to precipitate and lose the flame retardant effect. Therefore, flame-retardant plywood with good comprehensive properties is one of the most important issues in the field of plywood fire retardant research. In this paper, a new composite phosphorus-nitrogen synergistic flame retardant was synthesized, and its synthetic process was studied. On this basis, a new type of composite phosphorus-nitrogen synergistic flame retardant and modified urea-formaldehyde resin adhesive were mechanically mixed to prepare the flame retardant urea-formaldehyde resin adhesive. The physical and chemical properties, adhesive properties and flame retardant properties of the flame retardant urea-formaldehyde resin adhesive were studied. Draw the following conclusions: 1) the physicochemical properties of the flame retardant UF resin adhesive showed good physical and chemical properties. With the increase of the amount of flame retardant, the viscosity of the flame retardant UF resin adhesive increased with the increase of time, and the pH value of the flame retardant UF resin adhesive decreased. The curing time and the suitable period showed the tendency of shortening, the suitable period was more than 6 h, the solid content and the moisture content of the prepared flame retardant plywood remained basically unchanged. The results showed that the adhesive strength was influenced by the amount of flame retardant and curing agent. Within the scope of the experiment, When the amount of flame retardant is 8 and the curing agent ammonium chloride is 0.2, the bonding strength of the flame retardant UF resin adhesive is 1.31 MPa, and the qualified rate of impregnation and peeling is 100. All of them meet the requirements of class II (鈮

本文編號(hào)：1861202