Page 58 - 涂料工业2024年第01期电子刊
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54 1 Vol. 54 No. 1
2024 1 Jan. 2024
A N C A NGS ND S R
有机硅改性潜固化型单组分聚氨酯的制备及性能
李灿刚,邵春妍,常源智,田秀娟 ,姬依婷
(山东科技大学材料科学与工程学院,山东青岛266590)
摘 要:为提高单组分聚氨酯材料的低温柔顺性与疏水性,通过溶液聚合法,在潜固化型单组分
聚氨酯预聚物中引入端羟基聚二甲基硅氧烷( DMS- ),制备了有机硅改性潜固化型单组分聚氨酯
材料。通过红外光谱、动态力学分析和拉伸性能测试等研究方法,探讨了不同 DMS- 添加比例对
改性聚氨酯材料性能的影响。结果表明:随着 DMS- 添加比例的升高,改性聚氨酯材料的阻尼因
子升高,玻璃化转变温度向低温方向移动;虽然材料的拉伸强度有所下降,但断裂伸长率明显升高;
接触角增大,吸水率下降。有机硅改性的单组分聚氨酯材料以其优异的低温柔顺性与疏水性,拓宽
探 工 工 了材料的使用温域,改善了材料的使用条件。
艺 关键词:聚二甲基硅氧烷;潜固化;单组分;聚氨酯
艺
索
中图分类号 630. 4 3 文献标志码: 文章编号:0253-4312(2024)01-0036-08
开 技 技 doi 10. 12020 . i n. 0253-4312. 2023-149
发 术 术
Preparation and Properties o Silicone Modi ied atent Curing
ne component Polyurethane
J
i Can an ,Shao Chunyan,Chan uan hi, ian iu uan,i itin
(School of Materials Science and Engineering,Shandong University of Science and Technology,Qingdao,
Shandong 266590,China)
A stract: o impro e the low-temperature le i ility and hydropho icity o one-
component polyurethane, hydro yl terminated polydimethyl ilo ane ( DMS- ) wa
introduced into latent curin one-component polyurethane prepolymer throu h olution
polymeri ation to prepare ilicone modi ied latent curin one-component polyurethane
material. he e ect o the addition ratio o DMS- on the propertie o modi ied
polyurethane material were in e ti ated y in rared pectro copy,dynamic mechanical
analy i and ten ile per ormance te t. he re ult howed that the dampin actor o the
modi ied polyurethane material increa ed and the la tran ition temperature hi ted toward
low temperature with the increa e o the DMS- addition ratio. Althou h the ten ile
tren th o the material decrea ed,the elon ation at rea increa ed. he contact an le
通信作者:田秀娟(1978—),女,博士,高级实验师,主要从事聚合物的改性研究。
本文规范引用格式:
李灿刚,邵春妍,常源智,等. 有机硅改性潜固化型单组分聚氨酯的制备及性能 J . 涂料工业,2024,54(1):36-43.
C G,S A C ,C ANG ,et al. reparation and propertie o ilicone modi ied latent curin one-component polyurethane J . aint Coatin
ndu try,2024,54(1):36-43.
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