玻纤微米siolt2gt增强硬质聚氨酯泡沫塑料的制备与性能

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1、撩要摘要遁过对硬质聚氨酝泡沫塑料(RPUF)制备原理的研究，辩蕊工艺进行优化，得出了最佳配方为：聚醚多元醇(100)，PAPI(100)，H20(0．1)，辛酸哑锡T-9(O．4)，三乙醇胺A．3(O．6)，硅油L-600(1．0)。研究了玻纤(GF)、微米si02加入量粒偶联剂KH-550含爨对聚氨酯滚滚囊精力学瞧戆黪澎穗，努辑了玻绥、徽笨Si02鼹RPUF熬稳定性豹影嫡，并对儡联裁释玻纤、微米si02{蕈潮梳理进行了深入搽讨。玻璃纤维和微米Si02增强RPUF都缀历了先增大后减小的过程，二者最佳

2、添加量分别为2％、4％，而硅烷偶联剂的最佳添加量为1％。玻璃纤维增强效果要明显强予微米si02，而经KH．550表面处理的玻璃纤维，囊予荬与蒙氨酯基体形成了稳定熬往学键，增强效采要秘嚣魄岽楚瑾熬好。探讨了不同填料增强聚氨酯泡沫塑料的破坏机理。玻璃纤维增强的泡沫嫩料由于玻璃纤维的加入，增强了泡孔蹙，从而提高了泡沫潮料的压缩强度，应力．应变曲线鼹示破坏过程经历了弹性形变到屈服奁黧材料失效；瑟擞笨Si疆爨是通过芍

3、入嚣《往戆粒子，焱爱戮载蔫终爨薅，承踅了部分载旃，提高了泡沫塑料的压缩强度，破环过程并无明显

4、屈激。TGA研究表明，玻纤对RPUF的热稳定性影响不明显，惭微米Si02幽于提高了微相分离程度，太大提高了其热稳定性，热分解濑废提高了1S．3℃。美键词硬质聚氨酯泡沫塑料；玻璃纤维；微米Si02：表面改性；增强{压缩强度；热稳定性燕山大学工学硕士论文AbstractByinvestigatingthepreparativeprincipleofRPUF,itsprocessingtechnicshasbeenoptimized．ThebestproportionofRPUFiscomposedbyp

5、olyolpolyether(100)，PAPI(150)，H20(0．1)，T-9(O．4)，A-3(0．6)，L一600(1．o)．TheeffectofthecontentofGF、micronSi02andKH-550onthemechanicalpropertiesoftheRPUFisstudied，thenthatofthethermicstabilitybyGF、micronSi02iSanalyzed．AtlastthemechanismofthemiSdiscussed．Ther

6、esultshowsthatcompressionstrengthisincreasedwithGFcontentatfirstandisdecreasedasGFcontentthenwiththeincreasingofGFcontentandmicronSi02．ThebestadditionoftheGFandmicronSi02is2％and4％respectively,andtheK烈一550趣1％meeffectofGFreinforcedonRPUFisbetterthanthato

7、fmicronSi02，theeffectofGFtreatedbyKH-550isbeRerthanthatofGFwithouttreated．ThefailuremechanismsofRFPUfilledbydifferentfillersarediscussed。ForRPUFreinforcedbyGFasthewallofRPUFisreinforced，the0=8curveshowsthatdestroyprogresssufferselasticeleformation、yiel

8、dandfailure，whileRPUFreinforcedbymicronSi02astherigidityparticleisfilledinit．thea-￡curveshowsthatdestroyprogresshasnovisibleyield．FromTGA，itisindicatedthattheeffectofGFOnthethermicstabilityissmall，whilethetinyphaseasunderCanbeimprovedbymicronSi02．Sotha

9、tthethermicstabilitycanbeimprovedtoo．Itisinprovedby18。3℃。KeywordsRPUF；OF；micronSi02；surfacemodification；reinforce；compressivestrength；thermicstabilityll篱l章绩论第1章绪论l。l硬质聚氨酯泡沫塑料的概况1．1．1硬质聚氯酯泡沫塑料的基本描述硬质聚氨酯泡沫塑料(RigidPolyurethaneFoam，RPUF)是聚氯