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1.
黄海 《粘接》1998,19(5):14-16
采用EVA乳液、PVAc乳液、特效增粘树脂、助剂等为原料,制备了适用于难粘塑料瓶的标签胶。介绍了各组份对粘接强度的影响,讨论了各组份配比和最佳工艺参数的选择。  相似文献   

2.
花生壳制木材用胶粘剂的研究   总被引:5,自引:1,他引:5  
对花生壳的组份作了较为详细的研究,同时从利用花生完全组份的观点出发,对花生壳的制胶工艺作了改进,使花生亮能100%地用作制胶的原料。  相似文献   

3.
静电植绒用双组份聚氨酯粘合剂的研制   总被引:2,自引:0,他引:2  
用双预聚工艺制备了静植绒用无溶剂双组份聚氨酯粘合剂,讨论了原料等因素对组份粘度、固化速度、植绒牢度、手感的影响。  相似文献   

4.
双组份胶粘剂专用设备   总被引:1,自引:1,他引:0  
安玉森 《粘接》1997,18(6):24-26
1前言众所周知,双组份胶粘剂是由A(基料)、B(催化剂)组成的。使用双组份胶粘剂的方法就是将两个组份(A料与B料)按给定的配比放在一起混合搅拌,产生不可逆的化学反应。随着固化过程的结束,而得到所需要的最终结果。一般来说,使用双组份胶粘剂有两种方法:第一种方法是手工按一定配比将两种组份的料进行混合搅拌,得到象单组份一样使用的双组份胶。这种方法适用于需少量胶粘剂和当双组份胶的化学反应时间较长时。这种方法必须预制比需要量多的胶料,而最终使用后总要有一些剩余料,从而造成浪费;第二种方法是使用专用设备。下面…  相似文献   

5.
高温胶的研究   总被引:3,自引:0,他引:3  
余叔庸  谢静 《粘接》1989,10(6):1-6
本文从耐高温性和热膨胀两方面研究了高温胶,分析了各组份对高温胶熔点的影响,并得出了各组份在高温胶中的含量范围。作者利用本文的研究结果,成功地配制了GW系列高温胶。  相似文献   

6.
本文以聚醚多元醇和甲苯二异氰酸酯为原料.用多元醇和芳香族二胺为扩链剂和交联剂,添加反应型阻燃剂及其它配合剂,制备了阻燃型双组份无溶剂聚氨酯密封胶粘剂,通过控制阻燃剂的用量来调节该胶的操作时间.并且考察了环境温度及催化剂种类等对该胶操作时间的影响,固化时间对该胶剪切强度的影响,以及应用情况。  相似文献   

7.
溶剂型单组份聚氨酯胶粘剂   总被引:1,自引:0,他引:1  
郭孟姣  关仲翔 《粘接》1996,17(2):26-28
论述了溶剂型单组份聚氨酯胶粘剂的合成原理、合成方法及具体实验步骤,讨论了聚酯多元醇、扩链二元醇、异氰酸酯、溶剂等合成原产对胶粘剂性能的 影响,采用混合多元醇、两种扩链剂及TDI与MDI的组合,于混溶剂中,在加热条件下,逐步加聚而合成了主性能聚氨酯胶粘剂。经测试,该胶粘剂对牛皮、PVC及PU人地均有较高的粘结力和剥离强度。  相似文献   

8.
水性乙烯基聚氨酯胶粘剂结构与性能的研究   总被引:3,自引:1,他引:2  
本文采用多组份乙烯基单体共聚,通过乳液聚合方式,合成了各种含有活泼H单体的共聚物。研究了结构对性能影响的规律。  相似文献   

9.
文中介绍了一种单组份聚氨酯胶粘剂(1-C PU胶粘剂),它的组成包括一种或一种以上舍端异氰酸根(NCO)的聚氨酯预聚体,一种或一种以上的增稠剂以及一种或多种添加剂。除此以外还阐述了这种单组份聚氨酯胶粘剂的制备过程及应用情况。  相似文献   

10.
室温固化厚胶层高强度环氧胶粘剂   总被引:1,自引:0,他引:1  
采用环氧树脂予先与端羧基液体丁腈橡胶接枝以及合成子主链上带有多个醚键的二胺作固化剂,使调制的双组份糊状室温固化型环氧胶粘剂的甲、乙两组份均具有内增韬机制的双组份糊状室温固化型环氧胶粘剂的甲使得到的室温固化环氧胶具有极高剪切和剥离强度,并展现了厚胶层条件下仍具有高强度的特点。  相似文献   

11.
本文研究聚醋酸乙烯溶剂型胶粘剂共聚内增塑改性的问题。介绍了实验部分,讨论内增塑型共聚单体及其配合比对粘料稳定性的影响以及对胶粘剂适用期的影响。  相似文献   

12.
新型复合板材用聚氨酯胶粘剂的研究   总被引:1,自引:1,他引:0  
本文介绍了铝-塑复合板用聚氨酯胶粘剂的合成方法,讨论了原料配比反应温度、水含量、NCO/OH的配比对粘合性能和剥离强度的影响。  相似文献   

13.
The paper presents selected aspects of the effect of primers on adhesive properties and strength of aluminium sheet adhesive joints, made using polyurethane adhesives. The strength of adhesive joints was determined based on two cure time variants: 15 and 64 h. It was found that the longer cure time at a humidity of 33% is more desired, as it leads to a substantial increase in strength of the tested adhesive joints. In addition, two variants of surface preparation were applied: degreasing and degreasing followed by the application of a primer (a pro-adhesive agent). It was observed that the primer application prior to the application of an adhesive leads to a significant increase in strength compared to the variant where the adhesive application is preceded only by degreasing. Moreover, the aluminium sheet surface that was subjected to cataphoretic painting and priming exhibits better adhesive properties. It has a higher value of both surface free energy and its dispersion and polar components compared to the surface that was only subjected to degreasing.  相似文献   

14.
An acrylic adhesive was developed for forming strong, water resistant structural joints with polyolefins. This two-component, lightly crosslinked, methyl methacrylate (MMA) based adhesive consisted of an anaerobic curing system in one part with a copper (II) salt catalyst in the other. Bonds formed with low density polyethylene (LDPE) resulted in substrate failure upon block shear testing throughout the open time of the adhesive (45 min). The interdiffusion of the monomers into the substrates, and their subsequent polymerization was followed using several infrared spectroscopy (IR) techniques. The interphase of mixed LDPE and adhesive was determined to be as thick as 1.7 mm using IR microscopy. It was concluded that the strong adhesion in the aforementioned joints was the result of the interpenetration of the adhesive into the substrates.  相似文献   

15.
Recent adhesive technologies have focused on the development of high-quality and eco-friendly adhesives. Thus, there is a gradual shift from the currently used chemical-based adhesives toward harmless adhesives with improved quality and performance. Here, we evaluated the potential use of bacteria-produced recombinant mussel adhesive protein (MAP) as a harmless wood furniture adhesive. We formulated a MAP wood adhesive as an inclusion body type for economical preparation, and we confirmed its harmlessness through the non-detection of volatile organic compounds and heavy metals. The formulated MAP showed sufficiently strong bulk adhesive strength for the dried gluing of wood adherends. We also found that the formulated MAP wood adhesive exhibits robust adhesion in various environmental conditions, including open assembly times, incubation times, temperatures, and humidity levels. In summary, the developed recombinant MAP could be successfully used as a promising environmentally-friendly, harmless wood furniture adhesive.  相似文献   

16.
介绍了一种以乙二醛代替毒害性较大的甲醛与聚乙烯醇进行缩醛反应,并利用聚合反应,且配以优质填料制得了环保型纸管用胶粘剂.试验表明,该胶粘剂具有成本低、粘接强度高、干燥速度快等特点,完全可以满足高速纸管包装的要求.  相似文献   

17.
溶剂型SBS纸塑复合胶的研制   总被引:12,自引:3,他引:12  
本文研究了溶剂型SBS纸塑复合胶的性能和基本组成;讨论了SBS的分子结构,溶剂和增粘树脂的品种以及用量等对复合胶基本性能的影响.介绍了该胶的上机使用条件,以从放大投入生产后用户的使用情况等.  相似文献   

18.
对植筋胶的基本力学性能进行了研究。试验结果表明,不同的胶体类型,其力学性能显著不同;胶体组成成分的变化,尤其是填料的加入,会严重降低胶体的弯折强度和弯曲强度,胶1的弯折强度仅为21.229 MPa,弯曲强度仅为21.914 MPa,难以满足相关标准中规定的胶体基本性能的指标要求。有关标准中所规定的锚固用胶粘剂的性能指标需进一步细化与界定。  相似文献   

19.
In this paper we present the development of a unique self-adhesive material that, unlike conventional adhesives, maintains a high degree of rigidity at the “adhesive” state while possessing the ability to easily de-bond upon heating. Consequently, the material is both a rigid and a reversible adhesive. The material is an initially miscible blend of poly(?-caprolactone) (PCL) and diglycidyl ether of bisphenol-A/diaminodiphenylsulfone (DGEBA/DDS) epoxy, processed to a unique morphology via polymerization-induced phase separation (PIPS). The fully cured material features a biphasic, “bricks-and-mortar” morphology in which epoxy forms highly interconnected spheres (“bricks”) that interpenetrate with a continuous PCL matrix (“mortar”). When heated to melt the PCL phase (60 °C < T < 200 °C), the epoxy bricks remain rigid due to the high epoxy Tg (>200 °C) while PCL liquefies to become a melt adhesive. Moreover, the PCL liquid undergoes microscopic dilational flow to wet the sample surfaces due to its high volumetric expansion in excess to epoxy bricks expansion, a phenomenon we term “differential expansive bleeding” (DEB). Remarkably, the samples remain rigid at this state and their surfaces become covered by a thin layer of PCL now able to wet, and subsequently bond through cooling, to a variety of substrates. We observe high bonding strengths, which we attribute to a combination of good wetting and subsequent formation of a thin layer of crystalline PCL with high cohesive strength upon cooling. This adhesive layer can be melted again by heating (T > Tm) to easily de-bond and subsequent rebonding capacity was demonstrated, indicating repeated availability of PCL melt adhesive to the surface by the DEB mechanism.  相似文献   

20.
桃胶粘合剂的研制   总被引:1,自引:0,他引:1  
本文介绍了以桃树油为原料,过氧化氢为脱色剂,制备了性能优良的桃胶,并研究了在各种不同影响因素,如过氧化氢用量,水解温度,水解时间对桃胶的粘度和粘合剂稳定性的影响。  相似文献   

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