摘要
机房作为电子设备密集的场所,对温度和湿度的控制要求极高。为应对机房复杂多变的施工环境,需要采用具有良好耐热性与耐老化性的胶粘剂材料。一般的酚醛树脂胶粘剂很难在高温、高湿等恶劣环境下保持稳定的粘接性能,对此,研究机房施工用改性酚醛树脂胶粘剂的制备及应用性能就显得尤为重要。通过聚醚多元醇、环氧树脂及二羟甲基丙酸等材料,制备出PU/PA纳米粒子作为改性剂。随后,利用苯酚与丁酮等原料合成了基础酚醛树脂,并分别向其中掺入了10%、15%、20%及25%比例的PU/PA纳米粒子,制成了4种不同改性剂添加量的酚醛树脂胶粘剂。为全面评估这些胶粘剂的应用性能,采用了多样化的测试方法进行了试验分析。研究结果表明:在热稳定性、抗折性、抗压性、抗剪性、抗冲击性、耐磨损性、抗侵蚀性及施工性能测试中,纳米粒子浓度与性能呈现“先升后降”的非线性关系。20%浓度为性能拐点,超过该浓度后,因粒子团聚导致性能衰减;低于该浓度时,因粒子不足无法形成有效增强网络。20%浓度的试样中,均匀分散的纳米粒子可形成三维网络结构,显著提升热稳定性、力学性能及耐磨损性。因此添加20%的PU/PA纳米粒子改性酚醛树脂胶粘剂具有良好的应用性能,有利于提升机房设施的整体质量和耐久性。
As a place with a high concentration of electronic devices,the computer room has extremely high requirements for temperature and humidity control.In order to cope with the complex and ever-changing construction environment of the computer room,it is necessary to use adhesive materials with good heat resistance and aging resistance.It is difficult for ordinary phenolic resin adhesive to maintain stable bonding performance in harsh environments such as high temperature and high humidity.Therefore,it is particularly important to study the preparation and application performance of modified phenolic resin adhesive for computer room construction.PU/PA nanoparticles were prepared as modifiers by using materials such as polyether polyols,epoxy resin,and dihydroxymethyl propionic acid.Subsequently,basic phenolic resin was synthesized by using raw materials such as phenol and butanone,and PU/PA nanoparticles were added at ratios of 10%,15%,20%,and 25%,respectively,to produce phenolic resin adhesive with four different levels of modifier addition.In order to comprehensively evaluate the application performance of these adhesives,diverse testing methods were used for experimental analysis.The research results showed that,in the testing of thermal stability,flexural resistance,compressive resistance,shear resistance,impact resistance,wear resistance,erosion resistance,and construction performance,the concentration of nanoparticles showed a non-linear relationship of"first increasing and then decreasing"with performance.The 20%concentration was the performance inflection point,beyond which the performance deteriorated due to particle aggregation,below this concentration,an effective enhancement network could not be formed due to insufficient particles.In the sample of 20%concentration,uniformly dispersed nanoparticles could form a three-dimensional network structure,significantly improving thermal stability,mechanical properties,and wear resistance.Therefore,adding 20%PU/PA nanoparticles modified phenolic resin adhesive had good application performance,which was conducive to improving the overall quality and durability of computer room facilities.
作者
黄思圣
Huang Sisheng(China Railway 23rd Bureau Group Sixth Engineering Co.,Ltd.,Chongqing 400010,China)
出处
《中国胶粘剂》
2025年第6期50-56,共7页
China Adhesives
关键词
机房施工
改性酚醛树脂
胶粘剂
纳米粒子
弯折强度
固化时间
computer room construction
modified phenolic resin
adhesive
nanoparticles
flexural strength
curing time
作者简介
黄思圣(1993-),贵州贞丰人,本科,工程师,主要从事工程技术管理方面的工作。E-mail:zfq210420@163.com。
