摘要
以聚酯三元醇、聚醚二元醇(PTMG)和异佛尔酮二异氰酸酯(IPDI)为反应单体,聚对苯二甲酸乙二醇酯(PET)为改性剂,三氧化二锑和2,2′-双吗啉基二乙基醚(DMDEE)为催化剂,制备了新型单组分PU(聚氨酯)泡沫密封剂。着重探讨了催化剂、发泡剂、PET、多元醇配比以及—NCO含量等对密封剂的黏度、表面硬度和拉伸强度的影响。研究结果表明:当w(发泡剂)=10%、w(PET)=40%、w(—NCO)=8%(均相对于PTMG和聚酯三元醇质量而言)、m(二元醇)∶m(三元醇)=1∶1和w(催化剂)=1%(相对于密封剂质量而言)时,相应密封剂的综合性能相对最好,其黏度为475 mPa·s、表面硬度(邵A)为81和拉伸强度为1.46 MPa。
With polyester triol, polyether diol(PTMG) and isophorone diisocyanate(IPDI)as reaction monomers, polyethylene terephthalate (PET)as modifier, antimony trioxide and 2,2'-dimorpholine diethyl ether(DMDEE)as catalysts, a new type one-component PU (polyurethane) foam sealant was prepared. The influences of some factors (such as catalyst, blowing agent, PET, polyols ratios and --NCO contents)on viscosity, surface hardness and tensile strength of sealant were emphatically discussed. The research results showed that the corresponding sealant had the relatively best combination property becat, se its viscosity was 475 and tensile strength wax 1.46 MPa when mass ratio of m (tiol) : m(triol blowing agent, PET-NCO were 1% in sealant, I0% in PTM(, and po triol, 8e,4 in PTMG and polyester triol respectively. mPa's,surface hardness(shao A) was 81 was 1 : 1 , and mass fractious of catalyst, yester triol,40% iu PTM(; and polyester Keywords : one-component ; polyurelhane( PU ) ; sealant ; polyethylene terephthalatc( PET ) ; modified
出处
《中国胶粘剂》
CAS
北大核心
2014年第2期43-46,共4页
China Adhesives
关键词
单组分
聚氨酯
密封剂
聚对苯二甲酸乙二醇酯
改性
one-component
imlyurelhane( PU )
sealant
polyethylene terellhthalate(PET)
modified
作者简介
作者简介:张小博(1979-),山西临汾人,硕士,主要从事无机一有机高分子材料的合成与应用性能研究。E-mail:zxb_1015@163.com