CN103540282B - A kind of urea-formaldehyde resin wood adhesive modifier and its application - Google Patents
A kind of urea-formaldehyde resin wood adhesive modifier and its application Download PDFInfo
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Abstract
Description
（一）技术领域(1) Technical field
本发明涉及一种木材胶黏剂改性剂，具体涉及一种脲醛树脂木材胶黏剂改性剂及其应用。The invention relates to a wood adhesive modifier, in particular to a urea-formaldehyde resin wood adhesive modifier and application thereof.
（二）背景技术(2) Background technology
脲醛树脂胶黏剂由于其价格合适，工艺好，且颜色为无色，因而在竹木材加工产业中被大量使用。然而由于传统的脲醛树脂胶黏剂固化后胶层脆性大，特别是由于制备脲醛树脂过程中的反应特点，在胶黏剂中不可避免地存在一些游离成分如游离甲醛，对环境和人体带来一定危害，从而限制了其应用。Urea-formaldehyde resin adhesive is widely used in the bamboo wood processing industry because of its reasonable price, good workmanship, and colorless color. However, due to the high brittleness of the adhesive layer after the traditional urea-formaldehyde resin adhesive is cured, especially due to the reaction characteristics in the process of preparing urea-formaldehyde resin, some free components such as free formaldehyde inevitably exist in the adhesive, which brings harm to the environment and the human body. Certain hazards, thus limiting its application.
（三）发明内容(3) Contents of the invention
为了提高脲醛树脂胶黏剂的韧性，降低其固化后胶层脆性以及降低胶黏剂中的游离甲醛等有害成分，本发明提供了一种新型的脲醛树脂胶黏剂改性剂。In order to improve the toughness of the urea-formaldehyde resin adhesive, reduce the brittleness of the adhesive layer after curing and reduce harmful components such as free formaldehyde in the adhesive, the present invention provides a novel urea-formaldehyde resin adhesive modifier.
本发明采用的技术方案为：The technical scheme adopted in the present invention is:
一种脲醛树脂木材胶黏剂改性剂，包括如下重量份的组分：二氧化硅粒子1-10份、轻质碳酸钙1-10份、二氧化钛粒子1-10份、氯化铁0.1-0.5份、聚乙二醇1-5份、十二烷基磺酸钠0.1-0.5份。A urea-formaldehyde resin wood adhesive modifier, comprising the following components by weight: 1-10 parts of silicon dioxide particles, 1-10 parts of light calcium carbonate, 1-10 parts of titanium dioxide particles, 0.1-10 parts of ferric chloride 0.5 parts, polyethylene glycol 1-5 parts, sodium dodecylsulfonate 0.1-0.5 parts.
进一步，本发明所述脲醛树脂木材胶黏剂改性剂还包括苯丙乳胶0-50份。其中，苯丙乳胶的重量份可无限接近于零而不为零。Further, the urea-formaldehyde resin wood adhesive modifier of the present invention also includes 0-50 parts of styrene-acrylic latex. Wherein, the weight part of styrene-acrylic latex can be infinitely close to zero but not zero.
具体的，本发明所述脲醛树脂木材胶黏剂改性剂由如下重量份的组分组成：苯丙乳胶0-50份、二氧化硅粒子1-10份、轻质碳酸钙1-10份、二氧化钛粒子1-10份、氯化铁0.1-0.5份、聚乙二醇1-5份、十二烷基磺酸钠0.1-0.5份。其中，苯丙乳胶的重量份可无限接近于零而不为零。Specifically, the urea-formaldehyde resin wood adhesive modifier of the present invention consists of the following components by weight: 0-50 parts of styrene-acrylic latex, 1-10 parts of silica particles, 1-10 parts of light calcium carbonate , 1-10 parts of titanium dioxide particles, 0.1-0.5 parts of ferric chloride, 1-5 parts of polyethylene glycol, and 0.1-0.5 parts of sodium dodecylsulfonate. Wherein, the weight part of styrene-acrylic latex can be infinitely close to zero but not zero.
优选的，本发明所述脲醛树脂木材胶黏剂改性剂由如下重量份的组分组成：苯丙乳胶20-40份、二氧化硅粒子5-10份、轻质碳酸钙5-10份、二氧化钛粒子5-10份、氯化铁0.2-0.4份、聚乙二醇2-4份、十二烷基磺酸钠0.2-0.4份。Preferably, the urea-formaldehyde resin wood adhesive modifier of the present invention consists of the following components by weight: 20-40 parts of styrene-acrylic latex, 5-10 parts of silica particles, 5-10 parts of light calcium carbonate , 5-10 parts of titanium dioxide particles, 0.2-0.4 parts of ferric chloride, 2-4 parts of polyethylene glycol, and 0.2-0.4 parts of sodium dodecylsulfonate.
本发明的另一目的是提供一种所述脲醛树脂木材胶黏剂改性剂在脲醛树脂胶黏剂改性中的应用，所述应用方法为：Another object of the present invention is to provide a kind of application of described urea-formaldehyde resin wood adhesive modifier in the modification of urea-formaldehyde resin adhesive, described application method is:
（1）按配方量称取各组分，混合得到脲醛树脂木材胶黏剂改性剂；(1) Weigh each component according to the formula quantity, and mix to obtain a urea-formaldehyde resin wood adhesive modifier;
（2）将步骤（1）配制得到的脲醛树脂木材胶黏剂改性剂与脲醛树脂胶黏剂以重量比1:1-30混合，搅拌均匀，得改性胶黏剂；(2) Mix the urea-formaldehyde resin wood adhesive modifier prepared in step (1) with the urea-formaldehyde resin adhesive at a weight ratio of 1:1-30, and stir evenly to obtain a modified adhesive;
（3）将步骤（2）制得的改性胶黏剂以单面涂胶量60-140g/m2涂布到基体板材上，再贴上厚度为0.2-2mm的贴面板材，在0.75-1.1MPa作用下，经室温冷压或温度90-110℃热压成板材成品。(3) Coat the modified adhesive prepared in step (2) on the base plate with a single-side glue amount of 60-140g/ m2 , and then paste the veneer plate with a thickness of 0.2-2mm. Under the action of -1.1MPa, it is cold pressed at room temperature or hot pressed at a temperature of 90-110°C to form a finished plate.
本发明的积极效果表现在：以此改性脲醛树脂胶黏剂制备的木竹材胶合加工产品，贴面强度提高10%以上，成本降低5%左右，甲醛释放量降低20%以上。The positive effects of the present invention are as follows: the veneer strength of the wood and bamboo glued products prepared by the modified urea-formaldehyde resin adhesive is increased by more than 10%, the cost is reduced by about 5%, and the formaldehyde emission is reduced by more than 20%.
（四）具体实施方式(4) Specific implementation methods
下面结合具体实施例对本发明进行进一步描述，但本发明的保护范围并不仅限于此。The present invention will be further described below in conjunction with specific examples, but the protection scope of the present invention is not limited thereto.
实施例1Example 1
脲醛树脂木材胶黏剂未经改性处理。Urea-formaldehyde wood adhesives are unmodified.
E2级脲醛树脂胶黏剂100kg，面粉20kg，搅拌均匀，按涂胶量60g/m2涂布到纤维板上，然后再贴上厚度为0.2mm橡木薄木，在1.1Mpa作用下，经110℃热压成板材成品。成品中贴面板材的表面胶合强度为1.0MPa，甲醛释放量为2.2mg/L。E2 grade urea-formaldehyde resin adhesive 100kg, flour 20kg, stir evenly, spread on the fiberboard according to the glue amount 60g/ m2 , and then paste the oak veneer with a thickness of 0.2mm, under the action of 1.1Mpa, heat it at 110℃ Pressed into sheet products. The surface bonding strength of the veneered panels in the finished product is 1.0MPa, and the formaldehyde emission is 2.2mg/L.
实施例2Example 2
按质量比称出苯丙乳胶10kg，二氧化硅粒子1kg，轻质碳酸钙1kg，二氧化钛粒子1kg，氯化铁0.1kg，十二烷基磺酸钠0.1kg，聚乙二醇1kg，加到100kg E2脲醛树脂胶黏剂中，搅拌均匀，按涂胶量60g/m2涂布到纤维板上，然后再贴上厚度为0.2mm橡木薄木，在1.1Mpa作用下，经110℃热压成板材成品。成品中贴面板材的表面胶合强度为1.10MPa，甲醛释放量为1.4mg/L。Weigh 10kg of styrene-acrylic latex, 1kg of silicon dioxide particles, 1kg of light calcium carbonate, 1kg of titanium dioxide particles, 0.1kg of ferric chloride, 0.1kg of sodium dodecylsulfonate, and 1kg of polyethylene glycol according to the mass ratio. 100kg of E2 urea-formaldehyde resin adhesive, stir evenly, spread on the fiberboard according to the glue amount of 60g/ m2 , and then paste the oak veneer with a thickness of 0.2mm, under the action of 1.1Mpa, heat press at 110℃ to form a board finished product. The surface bonding strength of the veneered panels in the finished product is 1.10MPa, and the formaldehyde emission is 1.4mg/L.
实施例3Example 3
按质量比称出苯丙乳胶20kg，二氧化硅粒子5kg，轻质碳酸钙10kg，二氧化钛粒子5kg，氯化铁0.1kg，十二烷基磺酸钠0.1kg，聚乙二醇5kg，加到100kg E2脲醛树脂胶黏剂中，搅拌均匀，按涂胶量60g/m2涂布到纤维板上，然后再贴上厚度为0.2mm橡木薄木，在1.1Mpa作用下，经110℃热压成板材成品。成品中贴面板材的表面胶合强度为1.15MPa，甲醛释放量为1.1mg/L。Weigh 20kg of styrene-acrylic latex, 5kg of silicon dioxide particles, 10kg of light calcium carbonate, 5kg of titanium dioxide particles, 0.1kg of ferric chloride, 0.1kg of sodium dodecylsulfonate, and 5kg of polyethylene glycol according to the mass ratio. 100kg of E2 urea-formaldehyde resin adhesive, stir evenly, spread on the fiberboard according to the glue amount of 60g/ m2 , and then paste the oak veneer with a thickness of 0.2mm, under the action of 1.1Mpa, heat press at 110℃ to form a board finished product. The surface bonding strength of the veneered panels in the finished product is 1.15MPa, and the formaldehyde emission is 1.1mg/L.
实施例4Example 4
按质量比称出二氧化硅粒子1kg，轻质碳酸钙1kg，二氧化钛粒子1kg，氯化铁0.2kg，十二烷基磺酸钠0.1kg，聚乙二醇1kg，加到100kg E2脲醛树脂胶黏剂中，搅拌均匀，按涂胶量140g/m2涂布到纤维板上，然后再贴上厚度为0.2mm水曲柳薄木，在0.75Mpa作用下，经90℃热压成板材成品。成品中贴面板材的表面胶合强度为0.75MPa，甲醛释放量为1.45mg/L。Weigh out 1kg of silicon dioxide particles, 1kg of light calcium carbonate, 1kg of titanium dioxide particles, 0.2kg of ferric chloride, 0.1kg of sodium dodecylsulfonate, 1kg of polyethylene glycol, and add to 100kg of E2 urea-formaldehyde resin. In the adhesive, stir evenly, apply the glue on the fiberboard according to the glue amount of 140g/ m2 , and then paste the ash veneer with a thickness of 0.2mm. The surface bonding strength of the veneered panels in the finished product is 0.75MPa, and the formaldehyde emission is 1.45mg/L.
实施例5Example 5
按质量比称出苯丙乳胶50kg，二氧化硅粒子10kg，轻质碳酸钙10kg，二氧化钛粒子10kg，氯化铁0.5kg，十二烷基磺酸钠0.4kg，聚乙二醇5kg，加到100kg E2脲醛树脂胶黏剂中，搅拌均匀，按涂胶量60g/m2涂布到纤维板上，然后再贴上厚度为0.4mm水曲柳薄木，在1.1Mpa作用下，经110℃热压成板材成品。成品中贴面板材的表面胶合强度为1.02MPa，甲醛释放量为1.2mg/L。Weigh 50kg of styrene-acrylic latex, 10kg of silicon dioxide particles, 10kg of light calcium carbonate, 10kg of titanium dioxide particles, 0.5kg of ferric chloride, 0.4kg of sodium dodecylsulfonate, and 5kg of polyethylene glycol according to the mass ratio. In 100kg of E2 urea-formaldehyde resin adhesive, stir evenly, apply the glue on the fiberboard according to the glue amount of 60g/ m2 , and then paste the ash veneer with a thickness of 0.4mm. Under the action of 1.1Mpa, heat press at 110℃ Into a plate finished product. The surface bonding strength of the veneered panels in the finished product is 1.02MPa, and the formaldehyde emission is 1.2mg/L.
实施例6Example 6
脲醛树脂木材胶黏剂未经改性处理。Urea-formaldehyde wood adhesives are unmodified.
E1级脲醛树脂胶黏剂100kg，面粉20kg，搅拌均匀，按涂胶量140g/m2涂布到纤维板上，然后再贴上厚度为0.4mm橡木薄木，在1.1Mpa作用下，经110℃热压成板材成品。成品中贴面板材的表面胶合强度为0.70MPa，甲醛释放量为1.38mg/L。E1 grade urea-formaldehyde resin adhesive 100kg, flour 20kg, stir evenly, apply glue on the fiberboard according to the glue amount 140g/ m2 , and then paste the oak veneer with a thickness of 0.4mm, under the action of 1.1Mpa, heat it at 110℃ Pressed into sheet products. The surface bonding strength of the veneered panels in the finished product is 0.70MPa, and the formaldehyde emission is 1.38mg/L.
实施例7Example 7
按质量比称出苯丙乳胶30kg，二氧化硅粒子8kg，轻质碳酸钙8kg，二氧化钛粒子8kg，氯化铁0.3kg，十二烷基磺酸钠0.3kg，聚乙二醇3kg，加到100kg E1脲醛树脂胶黏剂中，搅拌均匀，按涂胶量140g/m2涂布到纤维板上，然后再贴上厚度为0.4mm水曲柳薄木，在1.1Mpa作用下，经110℃热压成板材成品。成品中贴面板材的表面胶合强度为0.82MPa，甲醛释放量为0.9mg/L。Weigh 30kg of styrene-acrylic latex, 8kg of silicon dioxide particles, 8kg of light calcium carbonate, 8kg of titanium dioxide particles, 0.3kg of ferric chloride, 0.3kg of sodium dodecylsulfonate, and 3kg of polyethylene glycol according to the mass ratio. In 100kg E1 urea-formaldehyde resin adhesive, stir evenly, apply glue on the fiberboard according to the glue amount of 140g/ m2 , and then paste the ash veneer with a thickness of 0.4mm, and heat press at 110℃ under the action of 1.1Mpa Into a plate finished product. The surface bonding strength of the veneered panels in the finished product is 0.82MPa, and the formaldehyde emission is 0.9mg/L.
实施例8Example 8
按质量比称出苯丙乳胶50kg，二氧化硅粒子10kg，轻质碳酸钙10kg，二氧化钛粒子10kg，氯化铁0.5kg，十二烷基磺酸钠0.5kg，聚乙二醇5kg，加到100kg E1脲醛树脂胶黏剂中，搅拌均匀，按涂胶量140g/m2涂布到纤维板上，然后再贴上厚度为0.4mm水曲柳薄木，在1.1Mpa作用下，经110℃热压成板材成品。成品中贴面板材的表面胶合强度为1.01MPa，甲醛释放量为0.4mg/L。Weigh 50kg of styrene-acrylic latex, 10kg of silicon dioxide particles, 10kg of light calcium carbonate, 10kg of titanium dioxide particles, 0.5kg of ferric chloride, 0.5kg of sodium dodecylsulfonate, and 5kg of polyethylene glycol according to the mass ratio. In 100kg E1 urea-formaldehyde resin adhesive, stir evenly, apply glue on the fiberboard according to the glue amount of 140g/ m2 , and then paste the ash veneer with a thickness of 0.4mm, and heat press at 110℃ under the action of 1.1Mpa Into a plate finished product. The surface bonding strength of the veneer panels in the finished product is 1.01MPa, and the formaldehyde emission is 0.4mg/L.
实施例9Example 9
脲醛树脂木材胶黏剂未经改性处理。Urea-formaldehyde wood adhesives are unmodified.
E1级脲醛树脂胶黏剂100kg，面粉20kg，搅拌均匀，按单面涂胶量140g/m2涂布到2mm杨木单板上，在1Mpa作用下，经100℃热压成三层普通胶合板。胶合板胶合强度为0.75MPa，甲醛释放量为1.35mg/L。E1 grade urea-formaldehyde resin adhesive 100kg, flour 20kg, stir evenly, apply 140g/ m2 glue on one side to 2mm poplar veneer, under 1Mpa, heat press at 100℃ to form three-layer ordinary plywood . The bonding strength of plywood is 0.75MPa, and the formaldehyde emission is 1.35mg/L.
实施例10Example 10
按质量比称出苯丙乳胶30kg，二氧化硅粒子6kg，轻质碳酸钙6kg，二氧化钛粒子6kg，氯化铁0.3kg，十二烷基磺酸钠0.35kg，聚乙二醇3kg，加到100kg E1脲醛树脂胶黏剂中，搅拌均匀，按单面涂胶量140g/m2涂布到2mm杨木单板上，在1Mpa作用下，经100℃热压成三层普通胶合板。胶合板胶合强度为0.85MPa，甲醛释放量为0.4mg/L。Weigh 30kg of styrene-acrylic latex, 6kg of silicon dioxide particles, 6kg of light calcium carbonate, 6kg of titanium dioxide particles, 0.3kg of ferric chloride, 0.35kg of sodium dodecylsulfonate, and 3kg of polyethylene glycol according to the mass ratio. In 100kg of E1 urea-formaldehyde resin adhesive, stir evenly, and apply 140g/ m2 of glue on one side to 2mm poplar veneer. Under the action of 1Mpa, it is hot-pressed at 100℃ to form a three-layer ordinary plywood. The bonding strength of plywood is 0.85MPa, and the formaldehyde emission is 0.4mg/L.
可见，通过对脲醛树脂木材胶黏剂进行增强降醛改性，不但能降低脲醛树脂胶黏剂中游离甲醛含量20%以上，而且能够提高木竹材加工产品胶合强度10%以上，为生产绿色环保型高强度的木竹材胶合加工产品提供一个新的技术支持。It can be seen that through the enhanced aldehyde-reducing modification of urea-formaldehyde resin wood adhesives, not only can the free formaldehyde content in urea-formaldehyde resin adhesives be reduced by more than 20%, but also the bonding strength of wood and bamboo processed products can be increased by more than 10%. Provide a new technical support for high-strength wood-bamboo glued processing products.
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| CN112063343A (en) * | 2020-09-22 | 2020-12-11 | 肇庆市海特复合材料技术研究院 | High-performance resin-based adhesive and preparation method thereof |
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| EP2423185B1 (en) * | 2010-08-30 | 2017-03-01 | Rhein Chemie Rheinau GmbH | New aqueous resorcinol-formaldehyde-latex dispersions, fibers with improved adhesion, process for their preparation and use thereof. |
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| CN1241548A (en) * | 1998-07-15 | 2000-01-19 | 李金生 | Concrete interface treating agent and its preparation |
| CN101285512A (en) * | 2008-05-09 | 2008-10-15 | 海盐华强树脂有限公司 | Production method for clutch surface adopting formaldehyde-phenol resin as cementing compound |
| CN101880437A (en) * | 2009-05-05 | 2010-11-10 | 江门市双键化学企业有限公司 | A kind of preparation method of nano-modified urea-formaldehyde resin |
| CN102086295A (en) * | 2010-06-28 | 2011-06-08 | 永港伟方（北京）科技股份有限公司 | Urea-formaldehyde resin for non-dewatering particleboard and preparation method thereof |
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