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通过考察几种增塑剂用于预涂饰装饰纸浸渍树脂的使用效果,探索聚丙烯酸酯作为氨基浸渍树脂增塑剂的可能性.研究增塑剂对浸渍树脂适用期的影响及对预涂饰装饰纸预固化度、柔韧性和耐潮性的影响.结果表明:聚丙烯酸酯能促进和参与氨基树脂的交联反应,提高预涂饰装饰纸的各种性能.当增塑剂的用量达到树脂量的50%以上时,即使不加固化剂,浸渍纸预固化度也可达到70%以上而满足工艺要求;当增塑剂为树脂量的40%~50%时,纸张的柔韧性明显提高,其弯曲半径达到3mm;当氨基树脂中加入的增塑剂量与树脂量相同时,浸渍纸吸湿率可降低30%左右,耐潮性明显增强.增塑剂也会缩短浸渍树脂的适用期,当增塑剂为树脂量的30%~50%时,适用期最短,加入抑制剂后方可满足生产工艺要求的适用期. 相似文献
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本文基于阻燃浸渍纸的制备,开展了阻燃浸渍纸贴面人造板制备技术研究。研究表明:1)阻燃剂中季戊四醇是树脂黏度增加的主因,并通过添加尿素可以减缓黏度增加,为浸渍工艺提供可能。2)聚磷酸铵影响氨基树脂固化,调节甲醛与尿素、三聚氰胺比例可以延长树脂固化时间。3)阻燃浸渍纸的表面胶合强度满足标准要求,并和热压条件相关。4)与混合/浸注的阻燃处理方式相比,阻燃浸渍纸贴面处理方法将阻燃剂集中在基材表面,用量减少,成本降低。 相似文献
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低压短周期三聚氰胺浸渍纸饰面中密度纤维板生产工艺探讨 总被引:1,自引:0,他引:1
介绍低压短周期三聚氰胺浸渍纸饰面中密度纤雏扳的生产工艺控制。讨论压站时的无压时间度三聚氰胺浸渍纸挥发分、预固化度和中密度纤维板基材质量技术指标波动对其生产过程与产品质量的影响;介绍生产中常见的产品质量缺陷并分析其产生原因。 相似文献
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DAP树脂浸渍纸装饰板研究 总被引:2,自引:0,他引:2
介绍了DAP树脂浸渍纸装饰板的研究背景及其性能、应用.分九组对样品进行了浸渍、干燥、热压工艺实验,并对装饰板进行了树脂含量、预固化度、抗拉强度、吸水膨胀率测定.得出基本工艺为:除水剂3%,浸胶量140%,胶纸90℃下的烘干时间为47min. 相似文献
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介绍了浸渍纸的浸胶量、挥发物含量、流展、预固化度等主要性能指标的概念及其检测方法;探讨了这些性能指标对强化木地板压贴质量的影响,并提出了适合强化木地板压贴的浸渍纸的主要性能指标范围,以及浸渍纸性能指标相对超范围时的压贴工艺调整方向。 相似文献
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Impregnated papers are widely used as decorative, protective and balance sheets in decorative laminates
for the furniture, flooring and building industries. One important property of such composites is their
warping behaviour. Especially for laminate flooring, warping of the lamellae is undesirable. In the present
study the influence of important process parameters in the manufacturing of impregnated papers is quantitatively
analyzed based on an industrial experiment carried out at an Austrian impregnation plant. Catalyst concentration,
moisture content, resin loading and base paper supplier were varied according to an experimental design.
The thermal properties of the impregnated papers and the warping behaviour of the corresponding boards were
evaluated using response surface methodology. The resulting models allowed quantifying the relative importance
of single factors on composite warp and defining the useful working range. Determination of the thermal
properties of impregnated papers using DSC and TMA was not sufficient to predict laminate warp. 相似文献
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On the warping behaviour of particleboards coated with melamine formaldehyde resin impregnated papers 总被引:1,自引:1,他引:0
Impregnated papers are widely used as decorative, protective and balance sheets in decorative laminates for the furniture, flooring and building industries. One important property of such composites is their warping behaviour. Especially for laminate flooring, warping of the lamellae is undesirable. In the present study the influence of important process parameters in the manufacturing of impregnated papers is quantitatively analyzed based on an industrial experiment carried out at an Austrian impregnation plant. Catalyst concentration, moisture content, resin loading and base paper supplier were varied according to an experimental design. The thermal properties of the impregnated papers and the warping behaviour of the corresponding boards were evaluated using response surface methodology. The resulting models allowed quantifying the relative importance of single factors on composite warp and defining the useful working range. Determination of the thermal properties of impregnated papers using DSC and TMA was not sufficient to predict laminate warp. 相似文献
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Dynamic mechanical properties of decorative papers impregnated with melamine formaldehyde resin 总被引:1,自引:1,他引:0
Papers impregnated with melamine formaldehyde based resins are widely used in decorative surface finishing of engineered wood based panels for indoor and outdoor applications. For cost-effective production of high-quality impregnated papers it is of great importance to understand the complex interplay between manufacturing conditions and technological property profile. In the present study, three raw papers from different suppliers were impregnated with melamine formaldehyde resin in an industrial scale experiment to study the influence of some important manufacturing variables on the processability of impregnated papers. As numerical factors the resin loading, the final moisture content and the amount of curing catalyst were systematically varied according to a statistical central composite design. The model papers were analyzed for their rheological and thermal properties using the dynamic mechanical method developed by Golombek. As target values flow time, cure time, curing rate and flexibility were used to calculate quantitative models for the processability of the impregnated papers using response surface methodology. It is shown that the relevant rheological and thermal paper parameters are significantly influenced by the supplier of the raw paper as well as the manufacturing variables. 相似文献
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通过两次加料制备了一种低分子质量的水溶性酚醛树脂,研究了酚醛树脂的固化行为,并结合滤纸浸渍酚醛树脂固化后强度性能的变化,确定了树脂的最佳固化温度。通过对酚醛树脂浸渍和固化工艺的研究以及对过滤纸性能的比较表明,水溶性酚醛树脂用于浸渍增强过滤纸是可行的。定量为135 g/m2的过滤原纸浸渍树脂固化后,耐破指数1.53 kPa·m2/g,抗张指数30.1 N·m/g,湿抗张指数9.26 N·m/g,固化后过滤纸有良好的强度性能。通过孔径分析,发现该水溶性酚醛树脂对过滤纸的孔径大小以及分布几乎没有影响,浸渍后过滤纸仍保持优良的孔隙结构。 相似文献
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采用聚乙二醇对三聚氰胺甲醛树脂进行改性,改性后的树脂用作交联剂添加到苯丙乳液中,并对汽车工业滤纸原纸进行浸渍加工处理。通过研究聚乙二醇(P)、三聚氰胺(M)、甲醛(F)的不同配比、树脂添加量及固化pH值,探讨了其作为乳液交联剂对汽车工业空气滤纸的抗张强度、耐破度、耐水性、透气度的影响。实验结果表明,当P与M的摩尔比为0.32,F与M-MP的摩尔比为2.8,改性树脂添加量为苯丙乳液固含量的4%,固化pH值为6~7时,汽车工业空气滤纸的综合性能最佳(苯丙乳液的上胶量为25%)。当pH值为6时,滤纸的抗张强度为4.51 kN/m,耐破度为340 kPa,耐水性为39.4min,透气度为334 L/(m2.s)。 相似文献
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通过三聚氰胺的改性以及PVA的增韧,研制成一种水溶性改性酚醛树脂,将其应用于汽车工业滤纸的增强。主要探讨了影响树脂及浸渍滤纸性能的一些因素如原纸定量、上胶量、固化工艺以及树脂合成的相关因素如酚醛摩尔比、反应温度和反应时间、改性剂和PVA用量。研究结果表明:采用甲醛/苯酚=3.25的摩尔比投料,通过两步碱催化合成工艺,在50~85℃程序升温下连续反应2~4h,并加入占甲醛用量6.88%的三聚氰胺以及PF树脂绝干量1.5%的PVA改性剂,可制备出综合性能较好的水溶性酚醛树脂。用该改性酚醛树脂浸渍滤纸后固化,纸的物理性能都得到明显的改善。耐破度可达到328kPa、抗张强度达5.15kN/m、伸长率达4.78%、7.5°挺度2.4mN·m,而且树脂贮存时间能达到20d。 相似文献