BL-甲醛消纳剂在刨花板生产中的应用研究

BL-甲醛消纳剂具有低成本、降醛效果明显、本身环保无毒、使用方便等优点。试验结果表明：当BL-甲醛消纳剂添加量为1％时，刨花板的甲醛释放量降低达40％-75％，力学性能保持基本不变，且符合GB／T4897—92刨花板国家标准要求；胶粘剂的凝胶时间有所缩短。     

施用BL甲醛消纳剂的脲胶刨花板制板工艺研究

BL甲醛消纳剂是解决我国人造板因广泛使用脲胶而造成甲醛释放量严重超标问题的一项新技术。它的降醛效果显著,但也有其缺陷。本文着重探讨了通过改变制板工艺因素的方法,既充分发挥BL-甲醛消纳剂优良的降醛功能,又尽可能降低其对刨花板力学性能的负面影响。     

BL-甲醛消纳剂与脲醛树脂胶配伍使用的固化特性研究

BL-甲醛消纳剂用于解决脲醛胶人造板的甲醛释放问题。本研究通过对二者配伍使用时的固化特性进行考察,发现BL-甲醛消纳剂会延长脲醛胶的固化时间,进而对板材的质量产生负面影响。通过改进调胶工艺,调整固化剂类型与用量,可以有效解决此问题。     

中密度纤维板生产中应用BL-甲醛消纳剂降醛效果的研究

对制造过程中使用BL-甲醛消纳剂的中密度纤维板,采用单因子试验,分析比较了在不同工艺因子条件下的降醛效果。     

BL-降醛阻燃胶在刨花板制造中与脲胶配伍性的研究

简单介绍了BL-降醛阻燃胶和国产脲胶的特点,对脲胶和阻燃胶的配伍性做了混合适应性实验,并且压制了阻燃然刨花板,检测了板材的氧指数、甲醛释放量、内结合强度等各项性能.研究表明:使用BL-降醛阻燃胶与脲胶生产环保阻燃刨花板是切实可行的.     

中密度纤维板生产中应用BL-甲醛消纳剂降醛效果的研究

对制造过程中使用BL-甲醛消纳剂的中密度纤维板，采用单因子试验，分析比较了在不同工艺因子条件下的降醛效果。     

新一代BL-甲醛消纳剂在环保胶合板制造中的应用

介绍游离甲醛释放机理和甲醛消纳剂对甲醛的消纳机理。通过选择试验,选择与甲醛消纳剂搭配最佳的脲醛树脂,并确定最佳配比和工艺参数。用加入甲醛消纳剂的脲醛树脂制造出物理力学性能合格的E1级环保胶合板。     

E0级刨花板甲醛捕捉剂的研制与应用

采用工艺合成和多组份协同作用的方法,合成高效甲醛捕捉剂,在E1级刨花板生产的基础上,在不改变原生产工艺条件下,每立方米刨花板添加甲醛捕捉剂5.5～7.0kg,可生产出E0级刨花板。     

E_0级刨花板甲醛捕捉剂的研制与应用

采用工艺合成和多组份协同作用的方法,合成高效甲醛捕捉剂,在E1级刨花板生产的基础上,在不改变原生产工艺条件下,每立方米刨花板添加甲醛捕捉剂5.5～7.0kg,可生产出E0级刨花板。     

新一代BL—甲醛消纳剂在环保胶合板制造中的应用

介绍游离甲醛释放机理和甲醛消纳剂对甲醛的消纳机理。通过选择试验，选择与甲醛消纳剂搭配最佳的脲醛树脂，并确定最佳配比和工艺参数。用加入甲醛消纳剂的脲醛树脂制造出物理力学性能合格的E1级环保胶合板。     

Orientierende Untersuchungen zur Reduzierung der Formaldehydemission von Spanplatten durch sogenannte „Sperrschichten”

In WKI’s laboratory three-layer particleboard of 16 mm thickness were manufactured from stripped spruce wood and bonded with a UF-resin of a low molar ratio. During the preparation of the mould a glue film or a urea solution or water glass was applied symmetrically on both sides or among the glued particles respectively. The influence of the so-called blocking layers on the formaldehyde emission as well as on the relevant particleboard properties was investigated. The applying of these blocking layers on the surface of the particle mat led to very low formaldehyde emission (0.02 to 0.05 ppm). The effectiveness of these layers was lower when they were placed between surface layer and middle layer. The lowest formaldehyde emission was reached with urea solutions which, in return, led to an insufficient bending strength and optimization will be necessary.     

低甲醛释放量刨花板生产技术的研发

介绍了使用低甲醛与尿素物质的量之比的脲醛树脂(UF)/三聚氰胺尿素甲醛共缩聚树脂(MUF)混合体系以及NH4Cl+CHOOH双组分复合固化剂生产低甲醛释放量刨花板的工业化生产技术,所生产的刨花板甲醛释放量低于5mg/100g,2h吸水厚度膨胀率低于8%。     

Die verschiedenen Herstellverfahren für Spanplatten der Emissionsklasse E1

Molestation due to bad odor emanating from particleboard led to the publication of socalled formaldehyde directions by the Commission for Uniform Technical Building Specifications. These guidelines give maximum limits for permissible formaldehyde emission. Bad odor has hitherto only been noticed in aminoplast glued particleboard. A reduction in formaldehyde emission can be achieved by optimizing the mol ratios. the use of smell-binding substances and by post-production treatment. Particleboard manufactured in this manner can reach emission class E1. The use of glues with little or no formaldehyde content also results in particleboard of emission class E1.     

E1级环保刨花板生产系统解决方案的研究

E1、E2级刨花板生产性试验研究结果表明,应用先进的生产环保刨花板的系统解决方案,完全可以生产符合国家质量标准要求的E1级刨花板,其生产成本并不增加,而且不影响生产效率。     

Verminderung der Formaldehyd-Emission von Möbeln

Furniture, manufactured with particleboard may release formaldehyde to the surrounding air of a living room. This formaldehyde escapes through open board edges, milled kerfs and all kinds of holes (key-holes etc.). It can also penetrate through not completely gas-proof coating materials. The emission of formaldehyde can considerably be diminished by sealing the open surfaces and by applying particleboard with reduced formaldehyde content. Methods are described, which are suitable for testing furniture parts and furniture materials in general.     

Formaldehyde emission from particleboards manufactured with waste materials from plywood industry

Peeling cores, dried veneer residues and plywood edge pieces containing adhesive are used for particleboard production. So, in this study, the effect of waste materials from plywood industry used for particleboard manufacturing on the formaldehyde emission of panels was investigated.     

压贴工序对刨花板家具气味优化研究

以刨花板为研究对象,分析不同刨花板素板供方、素板环保等级、压贴时晾板时间和压贴后板材养生时间对刨花板气味等性能的影响.分别选用2家刨花板素板供方的E0级(甲醛释放量≤0.06 mg/m3)和无甲醛添加级(甲醛释放量≤0.03 mg/m3)18 mm刨花板素板进行压贴,压贴过程中晾板0 min、15 min、30 min...     

Use of Chemically Modified Wheat Gluten to Reduce Formaldehyde Emissions During Curing of Pigment Print Pastes on Fabrics

The study demonstrated that chemically modified wheat gluten reduces formaldehyde emissions from pigment print pastes on fabrics. Gluten was chemically modified by three methods. Deamidation of gluten was performed with sodium hydroxide, and methyl acrylate and ethyl alcohol groups were grafted on gluten. Print paste formulations were prepared with each type of chemically modified gluten, a commercial ethylene urea scavenger and no formaldehyde scavenger. Two types of auxiliary resins (i.e., melamine‐formaldehyde and hexamethoxymelamine‐formaldehyde resins) and four types of binders (i.e., acrylic, butadiene‐acrylic, butadiene‐styrene, and vinyl acetate) were used in conjunction with each of the scavengers. The print paste formulations were applied to cotton polyester poplin fabric and the abilities of the gluten and ethylene urea scavengers to reduce formaldehyde emissions were evaluated. Chemically modified gluten scavengers absorbed as much formaldehyde as the ethylene urea scavengers that are presently used in industry.