【作者】 赵锋；

【导师】 李光沛；

【作者基本信息】 北京林业大学 ， 木材科学与技术， 2006， 硕士

【摘要】 本文介绍了北京林业大学自主研发的BL-甲醛消纳剂及应用其开发低甲醛释放的环保细木工板的研究。主要关注于BL-甲醛消纳剂的研发及其降低使用脲醛树脂生产的细木工板的甲醛释放量的作用程度、作用机理和正确的使用方式、方法;主要目标是提高使用脲醛树脂制造的细木工板的环保级别,同时采取相应措施尽量减小对板材物理力学性能的影响,通过实验找到合适的配伍胶种、最优化的生产工艺,探讨BL-甲醛消纳剂应用于现有细木工板企业的可行性,从而给企业、社会和人们带来一定的经济效益、社会效益和环境效益。结果表明:(1)BL-甲醛消纳剂与UF树脂兼容,加消纳剂后的UF树脂的pH及黏度可满足生产需要。(2)随着BL-甲醛消纳剂加入比例的增加,细木工板的甲醛释放量呈明显的降低趋势;BL-甲醛消纳剂对甲醛的消纳效果十分明显,一般当其加入量为脲胶的10%时,消纳效果就特别明显;甲醛消纳率一般都在50%以上。(3)通过对生产工艺的优化,可使细木工板在甲醛释放量、胶合强度和横向静曲强度都产生较好的效果。同时针对不同的脲醛树脂,要采取不同的工艺措施。BL-甲醛消纳剂与太尔WG2115脲醛树脂配比的正交实验,得到较优的生产环保细木工板的工艺参数为配比(BL-甲醛消纳剂/太尔WG2115)10﹕100,热压温度110℃,热压时间10分钟。因素对试验影响大小次序为:配比﹥热压时间﹥热压温度。(4)对于山东菏泽曹县庄寨镇诚信木质品有限公司,在UF树脂中加入10%左右的BL-甲醛消纳剂在实验室及试生产中均可生产出物理力学性能符合国标要求、甲醛释放量达到E0级的环保细木工板。(5)使用BL-甲醛消纳剂生产环保细木工板是切实可行的,生产出的细木工板环保性能优良,强度达到国标要求,可作为室内装修和家具用材。更多还原

【Abstract】 BL-formaldehyde absorptive reagent independently developed by Beijing Forestry University can be made use of to produce environment-friendly blockboard with low formaldehyde emission. This research focuses on the development of BL-formaldehyde absorptive reagent, its effect on formaldehyde emission of blockboard, and its mechanism and proper method of application. Its main purpose is to reduce formaldehyde emission of blockboard and avoid debasing its physical and mechanical properties. Partner UF resin and optimum technics and parameter will be found through experiments. And the feasibility of BL-formaldehyde absorptive reagent’s application to industrial production methods is probed in order to bring some economic, social and environmental benefit. The results show that:(1) BL-formaldehyde absorptive reagent is coMPatible with UF resin, and the pH value and viscosity of UF resin added with the reagent could meet the requirement for production.(2) BL-formaldehyde absorptive reagent can effectively reduce the formaldehyde emission of blockboard. Generally the effect is especially obvious by adding about 10% reagent into UF resin, and over 50 percent of formaldehyde will be eliminated normally. Further more, the more BL-formaldehyde absorptive reagent is mixed into UF resin, the less formaldehyde is emitted.(3) Both formaldehyde emission, bonding strength and transverse static bending strength will be satisfied when optimum technics and parameter are realized. While, different UF resin needs different technics. Through orthogonal experiment(BL-formaldehyde absorptive reagent + Tai’er WG2215 UF resin), the optimum technologic parameters of producing environment-friendly blockboard are更多还原