您现在的位置: 首页> 研究主题> 硬质泡沫塑料

硬质泡沫塑料

硬质泡沫塑料的相关文献在1986年到2022年内共计339篇,主要集中在化学工业、建筑科学、化学 等领域,其中期刊论文153篇、会议论文52篇、专利文献231287篇;相关期刊76种,包括合成材料老化与应用、数控机床市场、国外塑料等; 相关会议19种,包括第十四次聚氨酯泡沫塑料科研、生产、技术交流会、中国聚氨酯工业协会第十六次年会暨国际聚氨酯技术研讨会、第七届全国食品冷藏链大会等;硬质泡沫塑料的相关文献由600位作者贡献,包括刘站站、李鹏、孔新平等。

硬质泡沫塑料—发文量

期刊论文>

论文:153 占比:0.07%

会议论文>

论文:52 占比:0.02%

专利文献>

论文:231287 占比:99.91%

总计:231492篇

硬质泡沫塑料—发文趋势图

硬质泡沫塑料

-研究学者

  • 刘站站
  • 李鹏
  • 孔新平
  • 罗振扬
  • 邢益辉
  • 李荣华
  • 袁海顺
  • 闫格
  • 傅振华
  • 刘颖
  • 期刊论文
  • 会议论文
  • 专利文献

搜索

排序:

年份

    • 徐玮
    • 摘要: 准备工作材料:图纸(自行用电脑打印)、KT板或硬质泡沫塑料、双面胶带纸、橡筋圈工具:直尺、铅笔、美工刀
    • 舒光军; 余全伟
    • 摘要: Flame retardant melamine polyether polyol were prepared by the reaction of melamine with propyl-ene oxide in organic solvents. The effects of solvent, temperature, catalyst on the reaction system, reaction time and hydroxyl value were investigated. The experiments showed that the optimum reaction condition was that DMAC as solvent, CH3 OK as catalyst of the quality of 5% melamine, reaction temperature 160 °C. After 3 hours reaction, clarified orange melamine polyether polyol with hydroxyl value of 405 mgKOH/g was obtained by the postprocessing. Limited oxygen index of the rigid polyuerthane foam based on the polyol was 25, which showed that its flame retardant effect was better than that of foam prepared with conventional polyether polyol under the same conditions.%采用三聚氰胺和环氧丙烷在有机溶剂中反应合成了阻燃三聚氰胺聚醚多元醇.考察了溶剂、温度、催化剂等因素对反应体系、反应时间和羟值的影响.结果表明,以N,N-二甲基乙酰胺为溶剂,三聚氰胺质量的5%的甲醇钾为催化剂,160°C的反应条件为佳.反应3 h后,经后处理得到澄清的橙黄色三聚氰胺聚醚多元醇,羟值为405 mgKOH/g.该多元醇用于聚氨酯硬泡发泡,氧指数(LOI)为25,同等条件下比甘油聚醚多元醇制得的硬泡阻燃效果好.
    • 谢江; 刘朝; 龙远铸; 樊翠蓉; 谢兴益
    • 摘要: 以长链烷基改性的聚乙烯亚胺的CO2加合物(Cn-bPEI-CO2,n为烷基碳原子数,n=4~16)为气候友好发泡剂,以聚醚4110、聚合MDI等为原料制作了一系列硬质聚氨酯泡沫塑料.讨论了该发泡剂(可利用聚氨酯的聚合热来释放CO2作为发泡气相)与聚醚4110和蓖麻油多元醇的相容性和发泡性能.结果表明,C8-和C12-bPEI-CO2与聚醚多元醇的相容性最好,能分散形成半透明溶液.C8-bPEI-CO2发泡效率最高,得到的泡沫密度最低.加大发泡剂用量和用蓖麻油多元醇代替聚醚4110可以得到密度低、泡孔更均匀的聚氨酯硬泡.Cn-bPEI-CO2更适合于蓖麻油多元醇的发泡体系.%A series of CO2 adducts from alkyl grafted polyethyleneimines (Cn-bPEI-CO2, where thealkyl car-bon number n ranged from 4 to 16) as blowing agents, and polyether 4110 and polymeric 4,4′-diphenylmethanedi-isocyanate as the main ingredients, the rigid polyurethane foams were perpared. These new blowing agents could disperse into polyether polyols and released CO2 during the exothermal polymerization of polyurethanes. Among the blowing agents investigated, C8-and C12-bPEI-CO2 showed higher dispersibility than the other samples. The C8-bPEI-CO2 blown foams showed the lowest density at the same amount of blowing agent used. Increasing the blowing agent amount and replacing the polyether polyol with castor oil-derived polyol could obtain foams with lower density and more homogeneous pore size. Cn-bPEI-CO2 blowing agents were more suitable for castor oil-based polyurethanes than for polyether-based polyurethanes.
    • 徐业峰; 李明友; 唐国涛
    • 摘要: The features, classification, application, production technology and development trend of polyure-thane composite thermal insulation pipe were introduced. The tube in tube process and spraying winding process were compared. The spraying winding technical characteristics of polyurethane insulation pipe technology were espe-cially introduced.%介绍了聚氨酯复合保温管道的特点及分类、应用领域、生产工艺和发展趋势,对管中管法和喷涂法两种工艺进行了对比,特别介绍了喷涂缠绕聚氨酯保温管技术.
    • 沈晨光; 陈军; 陈金炎; 相明华; 罗振扬
    • 摘要: 采用改进的聚氨酯硬泡喷涂高压发泡机,在水发泡时把液态CO2作为第三组分添加,对比了不同含量CO2发泡的泡沫制品的性能差异.结果表明,在不影响泡沫闭孔率的基础上,添加体积分数为0.5%~1%的液态CO2可以有效改善全水发泡的泡孔均匀性、绝热性能和尺寸稳定性.%Using the improved high pressure foaming machine for spraying rigid polyurethane ( PU) foam, the liquid CO2 was added as the third component in the preparation of rigid polyurethane using water foaming. The dif-ferent performance between the PU foams with different CO2 contents was compared. The results showed that the cell uniformity, thermal insulation and dimensional stability of PU foam were improved by adding 0. 5%~1% ( volume fraction) liquid CO2 without affecting the closed porosity of the foam.
    • 刘访艺; 王浩臻; 蒋小龙; 程栋; 窦忠山
    • 摘要: The effects of the blowing agent HCFC-141b in the formula of rigid polyurethane foam panel re-placed in part by HFC-245fa on the properties change in reaction time, foam density, limited oxygen index, foa-ming curve, compression strength, thermal conductivity, dimensional stability and weather resistance were re-searched. The results showed that the reaction time was prolonged, and the foam had higher density in free foaming process after the replacement, while the panel had lower density, lower compression strength, lower thermal con-ductivity, better dimensional stability and the panel could pass the test of weather resistance. The limited oxygen in-dex had no obvious changes.%研究了发泡剂HFC-245fa在硬质聚氨酯泡沫板材配方体系中替代部分发泡剂HCFC-141b后对反应时间、泡沫密度、氧指数、发泡曲线、压缩强度、导热系数、尺寸稳定性、耐候性等方面的影响.实验结果表明,用部分HFC-245fa替换体系中的HCFC-141b后,自由发泡速度减慢,密度增加;生产的板材密度降低,压缩强度降低,导热系数降低,尺寸稳定性提高,可以通过耐候性实验测试,泡沫的氧指数基本不变.
    • 赵丹; 徐婷; 贡昀; 董延茂; 郭叶书; 李忠人
    • 摘要: To recycle the solid wastes, the hydrotalcite?like compounds ( HTLcs) were prepared from the mag?nesia flue gas desulfurization residues ( MFGDR) . The effect of HTLcs on fire retardant and smoke suppression pre?formance of ammonium polyphosphate(APP)/flame?retarded rigid polyurethane foams(RPUF) were investigated by means of limited oxygen index( LOI) and cone calorimeter testing. The carbon residues were investigated by scan?ning electron microscopy( SEM) and Infrared spectrometer. In polyurethane systems, when adding 40% APP and 10% HTLcs, the limitied oxygen index reached 34. 2%. The maximum heat release rate reduced from 140 kW/m2 to 85 kW/m2 , which decreased 39. 3%. The polyurethane in the overall process of smoke production rate did not exceed 0. 25 m2/s. The hydrotalcite?like compounds had the ability of flame retardant and smoke suppression prop?erties.%采用氧化镁烟气脱硫固废制备了类水滑石(HTLcs).通过氧指数仪、锥形量热仪研究了类水滑石对聚氨酯硬泡(RPUF)/聚磷酸铵(APP)阻燃体系的阻燃和抑烟性能的影响.研究表明,当聚磷酸铵用量为40%、HTLcs用量为10%时,聚氨酯硬泡的极限氧指数(LOI)达到了34.2%,其最大热释放速率(PHRR)由RPUF的140 kW/m2降低到85 kW/m2,减幅达39.3%,且最大烟释放速率(PSRR)低于0.25 m2/s.类水滑石与APP具备一定的协效阻燃和抑烟性能.
    • 陆东杰; 熊丽媛; 邢益辉
    • 摘要: The application situation of FAB?1 as blended blowing agent for rigid polyurethane foam applied in refrigerators was introduced. The compatibility of FAB?1 with polyols, with base materials, and the comparison with other blowing agents, the application of FAB?1 blended with CP , the stability of foam blends were investigated. The results showed that the thermal conductivity ( 10 °C) of rigid foams using blowing agent FAB?1 was 17. 63 mW/( m·K) .%主要介绍了基于顺式HFO?1336mzz的混合发泡剂FAB?1在冰箱硬泡中的应用情况.研究了FAB?1与多元醇的相容性、与常用基材的兼容性、与其他发泡剂的差异、与环戊烷(CP)的混配应用,以及FAB?1发泡体系组合聚醚的储存稳定性.结果表明,FAB?1发泡制得的聚氨酯硬泡导热系数(10°C)可低至17.63 mW/(m·K).
    • 宫晓春; 胡彦平; 唐保强
    • 摘要: 目的 研究一类硬质泡沫塑料弹架结构的贮存特性和本构关系.方法 首先对结构试件进行高温压缩蠕变试验,然后对压缩后试件蠕变性能进行分析,得到材料高温压缩蠕变曲线,在此基础上用WLF方程对试件的贮存寿命进行评估,推算出试件达到特定蠕变量所需时间.结果 基于试验所得材料应力-应变曲线,用数值拟合的方法 建立了试件材料的压缩本构关系.结论 证实了在高温压缩蠕变试验过程中材料本构关系未发生变化,研究结果 可为后续型号结构试件寿命评估和失效机理研究提供参考.%Objective To study the storage property and constitutive relation of the rigid foamed plastic missile-launcher. Methods Firstly, the compression creep test under high temperature was carried on to the specimen, secondly, the creep performance of the compressed specimen was analyzed to get the compression creep curve, on the basis of which the WLF equation was used to evaluate the storage time limit. Results Based on the stress-strain curve of the specimen material, the compressive constitutive relation of the material was founded by numerical simulation. Conclusion The constitutive relation had no changes during the compression creep test, the study can provide reference for life estimation and invalidation mechanism studies of following series of test specimens.
    • 郝敬颖; 朱姝; 李玉松
    • 摘要: The vegetable oil polyol was prepared by epoxidized soybean oil and polyether polyol for rigid poly⁃urethane foam. The influence of reaction temperature, catalyst dosage and chemical time was investigated. The results showed that the better preparation condition was reacting 3~4 hours at 240°C and the dosage of catalyst ti⁃tanate was 001%. The viscosity of vegetable oil polyol was 2350 mPa·s(25 °C). When the vegetable oil polyol was mixed with the polyether polyol 4110 at the mass ratio of 25/75, and then mixed with the polyisocyanate PM⁃200, the rigid PU foam was prepared. The properties of the rigid foam met the requirements of standard CJ/T3002—92.%采用环氧大豆油和硬泡聚醚多元醇为原料合成了植物油多元醇。考察了反应温度、催化剂用量以及时间对植物油多元醇的影响。结果表明,较佳反应条件是在240°C反应3~4 h、钛酸酯催化剂用量为001%,合成的植物油多元醇黏度(25°C)约为2350 mP a·s。将此植物油多元醇替代25%的聚醚4110,与异氰酸酯PM⁃200混合发泡,得到的聚氨酯硬泡性能达到建筑保温行业标准CJ/T3002—92的要求。
  • 查看更多

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号