我国传统木工胶粘剂的研究进展与发展趋势

介绍了木工用胶粘剂发展的历史和研究现状及改性方法，重点是综合了传统木工用三种甲醛类胶粘剂和1人造板二次加工及家具生产用聚乙酸乙烯酯乳液胶的研究进展，同时提出了木工胶粘剂的发展趋势。     

企业名片

胶粘剂、涂料生产及销售企业KDH136企业名称:太尔化工(上海)有限公司电话:021-63758722传真:021-63758726E-mail:grace.cao@dynea.com网址:www.dynea.com产品介绍:为企业提供健康、安全、环保、优质的木工胶粘剂。企业留言:太尔木工胶,您的首选合作伙伴。KDH137企业名称:卡斯科     

脲醛树脂胶的制备及改性

脲醛树脂是一种由尿素和甲醛缩聚而成的合成树脂。自20世纪30年代生产应用以来,已逾70年历史。作为胶粘剂,脲醛树脂具有原料易得,成本低廉,胶接力较强的特点,使用量占木工胶粘剂总量的80％     

2007中国人造板工业技术进步研讨会在京圆满结束

2007年7月27日,由中国林产工业协会、中国林产工业协会纤维板专业委员会、中国林产工业协会木工胶粘剂与表面加工专业委员会联合主办的“2007中国人造板工业技术进步研讨会”在北京国林宾馆隆重召开。此次人造板工业技术进步研讨会旨在用循环经济的理念,     

综合信息

我国人造板标准制修订情况 截止1998年底,全国人造板标准化技术委员会归口管理的现行标准和正在制修订标准(包括纤维板、刨花板、胶合板、人造板饰面材料及饰面人造板、木材工业用胶粘剂)52项,其中现行的38项,有7项是97—98年期间批准发布的,即薄型硬质纤维板LY/T1205—97,浮雕纤维板LY/T1204—97,硬质木纤维瓦楞板LY/T1203—97、木工用氯丁橡胶胶粘剂LY/T1206—97、电工层压木板LY/T1278—1998、木材胶粘剂术语LY/T1280—1998、聚氯乙烯     

板式家具用封边热熔胶的选择和使用

在板式家具生产过程中,选择和使用适合于各个家具厂具体情况的封边热熔胶,不但能提升板工农 具的品质和档次,而且可以提高生产效率,减少板件整修的难度,减轻工人劳动强度。笔者长期从事木工和宜具用胶粘剂的技术和市场工作,下面就板式家具用封边热熔胶的选择和使用,提出一些心得和体会,希望能对我国板式家具生产水平的提升有所帮助。     

胶粘剂

目前,胶粘剂广泛用于所有工业领域,其中仅胶合板、木工、建筑和纸包装方面的用量,就接近全部用途的90%.从胶粘剂的材料种类来看,脲醛树脂、乙酸乙烯乳液和三聚氰胺三种约占80%;在合成橡胶类中,氯丁橡胶的用量最多.粘胶剂的现状胶粘剂主要以天然或合成聚合物为基料,但也有由无机化合物构成的.从形态来看,有水溶液、溶剂溶液、乳液和固体等几种.固体胶粘剂,有薄膜状或颗粒状,有时需加热熔融使用.从化学结构来看,胶粘剂可分为热塑性树脂、橡胶(天然或合成)几种.无机胶粘剂有早已应用的水玻璃、陶瓷粘料等.天然胶粘剂有天然橡胶、沥青、松香、明胶和酪素胶等.     

简讯

●《木材工业实用大全》包括十余卷。继《胶粘剂卷》(75元/本)和《刨花板卷》(65元/本)出版后,《干燥卷》(106元/本)和《涂饰卷》(80元/本)也已出版,欢迎订购,请和丁美蓉联系,以上书款含邮费。 ●《薄型硬质纤维板》、《浮雕纤维板》、《硬质木纤维瓦楞板》、《木工用氯丁橡胶胶粘剂》等4项行业标准日前已出版,需要者请与丁美蓉联系     

太尔全球攻略为用户提供世界级胶粘及贴面解决方案

20D4年3月．世界木工机械暨家具原辅材料厂家群英汇聚北京，竞相展示实力。国际领先的胶粘剂及贴面纸供应商—芬兰太尔集团公司也参加了本次中国国际木工展。据悉太尔在全球范围推出了产品商标，并且将在本次展会上首次在中国推广。作为在国际胶粘剂行业有着举足轻重地位的太尔公司有如此重大举措，本刊特地进行了现场采访，了解太尔新商标在全     

我国鞋用胶粘剂的现状及发展趋势

主要论述了现今我国鞋用胶粘剂的市场状况,对常用的鞋类胶粘剂进行了分类介绍,从我国鞋类市场的大环境及新技术开发两方面入手,分析了鞋用胶粘剂技术含量低和不环保的原因,阐述了未来我国鞋类胶粘剂的发展趋势。     

木材工业用胶黏剂低毒化研究进展

从合成树脂型胶黏剂的改进和生物质胶黏剂开发利用两方面,总结了木材工业用胶黏剂的低毒化研究进展,并提出根据我国国情着力发展生物质胶黏剂的建议。     

我国木材工业用胶黏剂研究与应用现状及发展趋势

介绍了我国木材工业用胶黏剂在生产原料、工艺与技术、工业化设备等方面的研究与技术革新,重点综述了环保型脲醛树脂、酚醛树脂、异氰酸酯类胶黏剂、大豆蛋白胶黏剂、淀粉胶黏剂以及高性能、多功能胶黏剂的研究进展与应用现状,并对我国木材工业用胶黏剂的发展趋势进行了展望。     

再识木材胶粘剂

近几十年,以再生资源为原料的胶粘剂逐步被以化石资源为主体的胶粘剂所取代。然而,由于后者在生产与使用中对环保的负面影响,如今以再生资源为原料的胶粘剂如大豆蛋白胶等又被重新重视,国外已再度开展对大豆蛋白胶的研究应用。以生命周期分析木材胶粘剂,既要应用胶粘剂增强木材,又要减少其造成的污染。     

生物质胶粘剂在人造板中的应用

分析了生物质胶粘剂在人造板中的应用现状,综述了近年来大豆蛋白基胶粘剂、淀粉基胶粘剂和木质素胶粘剂的研究进展.针对目前生物质胶粘剂在胶合强度、耐水性和改性工艺以及在人造板应用等方面存在的问题,笔者认为:应从生物质胶粘剂的宏观粘结特性和微观结构变化出发,深入研究其胶合机理并采用更有效的改性方法和生产工艺,使之广泛应用于人造板工业.     

Lignin-based wood panel adhesives without formaldehyde

Lignin-based wood adhesives prepared without formaldehyde substituted by non-volatile non-toxic aldehyde, namely glyoxal, were prepared and tested for application to wood panels such as particleboard. The adhesives yielded good IB strength results of the panels, enough to comfortably pass relevant international standard specifications for exterior-grade panels. The adhesives also showed sufficient reactivity to yield panels in press times comparable to those of formaldehyde-based commercial adhesives.     

Gross adhesive penetration in furfurylated, <Emphasis Type="Italic">N</Emphasis>-methylol melamine-modified and heat-treated wood examined by fluorescence microscopy

This study investigated the radial penetration of three conventional cold-set wood adhesives [emulsion polymer isocyanate (EPI), poly (vinyl acetate) (PVAc), one-component polyurethane (PU)] into various degrees of furfurylated and N-methylol melamine-modified (NMM) Scots pine, and heat-treated Scots pine and beech based on measurements of effective (EP) and maximum penetration (MP) from microscopic observations. EP of EPI adhesive decreased after modification with higher concentration of furfuryl alcohol while an improved penetration was recorded for PVAc into furfurylated wood. A deeper penetration was observed for all adhesives into wood treated with lower concentration of furfuryl alcohol. The EP of EPI and PU adhesives reduced after NMM treatment but it increased in the case of PVAc. In spite of reduction of EP of PU after NMM treatment, it represented a deeper penetration among all adhesives possibly due to its lower molecular weight. For Scots pine, increasing the treatment temperature improved EP of all adhesives while for beech, the EP of PU and PVAc increased largely in the case of samples treated at 195 °C. Visual analysis of fluorescence microscopy pictures provided more detailed information on modality of penetration. The results are useful for understanding the interaction among common adhesives and modified materials, and can be used in future research to explain the bonding behavior of modified wood.     

Tannin–resorcinol–aldehyde cold-set wood adhesives with only formaldehyde as hardener

Based on standard tannin adhesive formulations, tannin-resorcinol-glyoxal and tannin-resorcinol-glutaraldehyde cold-setting adhesives were prepared for wood glulam in this paper. Only less para-formaldehyde was added as hardener of adhesives. Both of them showed a rival tensile strength with tannin-resorcinol–formaldehyde adhesive. However they exhibited lower wood failure. The proportion of formaldehyde of the two are drastically decreased.     

Comparing dry bond strength of spruce and beech wood glued with different adhesives by means of scarf- and lap joint testing method

Dry bond strength of different adhesives on spruce and beech wood was tested by means of the former DIN standard 53253 (1964)scarf joint and the operative standard lap joint testing method according to EN 302-1 (2004). The failure mode in standard lap joint tests was mainly wood failure, whereas scarf joints failed in the bond line. Due to the high proportion of wood failure, no clear effect of the different adhesives, but a clear effect of wood species on the bond strength was observed for lap joint samples. By contrast, scarf joint testing was far less dependent on wood species and delivered clear differences in the strength of different adhesive systems.     

小径落叶松材制作空间网架杆件的选择与设计

通过对小径落叶松材的力学性能、与金属套筒连接性能及胶粘剂的选择试验,设计用小径落叶松材制作空间网架,扩大了小径材在建筑领域的使用范围。     

Ionic liquids as enhancers of urea-glyoxal panel adhesives as substitutes for urea–formaldehyde resins

Acid ionic liquids are used as hardeners of urea-glyoxal adhesives to enhance them to a level sufficient enough for substituting urea–formaldehyde adhesives used in wood panels.