
原料配比对水性聚氨酯耐水及力学性能影响的研究
李青飞, 唐丽丽
原料配比对水性聚氨酯耐水及力学性能影响的研究
Effect of Raw Material Ratio on Water Resistance and Mechanical Properties of Waterborne Polyurethane
以异佛尔酮二异氰酸酯(IPDI)、聚氧化丙二醇(PPG)、三羟甲基丙烷(TMP)、二羟甲基丙酸(DMPA)等为主要原料,采用预聚体分散法制备水性聚氨酯(WPU)系列产品,通过对产品性能的分析与表征,研究中和度、异氰酸根指数(R值)、亲水剂用量、交联剂用量等因素对WPU耐水及力学性能的影响。结果表明:随着中和度增大,胶膜拉伸强度增加,吸水率增大;随着R值增大,拉伸强度增大,胶膜吸水率减小;随着亲水剂用量的增加,胶膜拉伸强度、吸水率均增大;随着交联剂用量的增加,胶膜拉伸强度先增大后减小,吸水率先减小后增大。正交试验结果显示,影响WPU膜吸水率因素顺序为:DMPA用量>R值>TMP用量>中和度;当中和度为80%、TMP用量为1%、DMPA用量为4%、R值为1.10时,WPU胶膜的吸水率最小,为8.72%,耐水性最好。影响膜拉伸强度因素顺序为:DMPA用量>TMP用量>R值>中和度;当中和度为90%、TMP用量为3%、DMPA用量为5%、R值为1.20时,WPU胶膜的拉伸强度最高,为12.35 MPa。
A series of waterborne polyurethane (WPU) products were prepared by prepolymer dispersion method using isophorone diisocyanate (IPDI) , propylene oxide (PPG) , trimethylolpropane (TMP) , dihydromethylic acid (DMPA) etc. The effects of neutralization degree, isocyanate index (R value), amount of hydrophilic agent and crosslinking agent on water resistance and mechanical properties of WPU were studied. The results showed that the tensile strength and water absorption increased with the increase of neutralization degree. With the increase of R value, the tensile strength increased and water absorption decreased. The tensile strength and water absorption of the film increased with the increase of the dosage of hydrophilic agent. With the increase of the dosage of cross-linking agent, the tensile strength of the film first increased and then decreased, and the water absorption first decreased and then increased. The results of orthogonal test show that the order of factors affecting WPU film water absorption is: DMPA dosage>R value>TMP dosage>neutralization degree. When the neutralization degree is 80%, the dosage of TMP is 1%, the dosage of DMPA is 4%, and the R value is 1.10, the WPU film has the lowest water absorption (8.72%) and the best water resistance. The order of factors affecting film tensile strength is: DMPA dosage>TMP dosage>R value>neutralization degree. When the neutralization degree is 90%, the dosage of TMP is 3%, the dosage of DMPA is 5%, and the R value is 1.20, the tensile strength of WPU film is the highest (12.35 MPa).
水性聚氨酯 / 原料配比 / 耐水性 / 力学性能 / 正交试验
Waterborne polyurethane / Raw material ratio / Water resistance / Mechanical properties / Orthogonal test
TQ323.8
1 |
|
2 |
|
3 |
杨献金,张子明,李勇.水性聚氨酯在合成革干法涂层中的应用研究[J].皮革科学与工程,2023,33(2):55-61, 80.
|
4 |
欧阳维,胡晗,等.水性聚氨酯乳液的制备及其在乳胶制品中的应用[J].橡胶工业,2022,69(2):103-108.
|
5 |
张若飞,陈县萍,程诗强.水性聚氨酯胶黏剂的研究进展及其在汽车内饰领域中的应用[J].粘接,2018,39(2):24-28.
|
6 |
路周,胡进波,张默涵,等.水性树脂底漆对木材表面润湿性的影响[J].林业工程学报,2021,6(1):178-183.
|
7 |
张红生.水性聚氨酯树脂油墨连接料的制备及性能研究[J].化学与粘合,2022,44(6):517-521.
|
8 |
袁照森,任燕,黄昊,等.柠檬酸化壳聚糖改性水性聚氨酯整理剂对织物性能的影响[J].印染助剂,2022,39(8):43-46.
|
9 |
杨建军,陈虹雨,吴庆云,等.改性水性聚氨酯防腐涂料的最新研究进展[J].精细化工,2021,38(10):1981-1987.
|
10 |
何波波,钱涛,任勇源,等.氟改性水性聚氨酯复合乳液的合成及其性能研究[J].涂料工业,2022,52(7):60-67.
|
11 |
赵丽华,王欣,王威.PEG/IPDI共聚改性制备新型水性聚氨酯材料[J].塑料科技,2021,49(11):66-70.
|
12 |
|
13 |
赵小亮,赵瑞丽.埃洛石纳米管改性水性聚氨酯的制备及性能[J].印染,2023,49(8):35-38.
|
14 |
李恒,范浩军,林智贤,等.有机硅改性水性聚氨酯涂层耐磨自消光性能研究[J].涂料工业,2022,52(8):1-8.
|
15 |
|
16 |
冯见艳,秦荣,罗晓民,等.石墨烯/磺酸盐型水性聚氨酯多孔复合材料的制备及其性能[J].陕西科技大学学报,2021,39(5):7-13.
|
17 |
马心语,徐雪山,曾庆淼,等.水性聚氨酯结构与胶膜性能的关系[J].化学研究与应用,2020,32(6):993-998.
|
18 |
肖林久,蔡政,刘冬雪,等.聚己内酯三醇型水性聚氨酯胶黏剂的合成及性能[J].化工新材料,2015,43(2):71-74.
|
19 |
熊军,孙芳,杜洪光.丙酮-二正丁胺滴定法测定聚氨酯中的异氰酸酯基[J].分析试验室,2007,26(8):73-76.
|
20 |
蒋欣,刘煜平,刘治猛.单组分水性聚氨酯纳米乳液的性能与研究应用[J].广西大学学报,2003(3):181-185.
|
21 |
杨智慧,严曦雯,崔香.低黏度水性聚氨酯油墨连接料的制备与性能[J].塑料科技,2022,50(12):6-10.
|
22 |
魏欣.羧酸/非离子型水性聚氨酯的制备及改性研究[D].北京:北京化工大学,2018.
|
23 |
刘凯,姚明,魏欣,等.异氰酸酯指数对水性聚氨酯弹性膜性能的影响[J].现代化工,2020,40(12):177-180.
|
24 |
叶留留,张昕,范浩军,等.不同阴离子亲水扩链剂合成的水性聚氨酯性能比较[J].中国皮革,2018,47(11):15-23.
|
25 |
李鑫,洪成宇,刘华.TMP用量对交联水性聚氨酯性能的影响研究[J].聚氨酯工业,2022,37(2):23-26.
|
26 |
高笑飞,吴明华,洪国沈,等.交联单体TMP对水性聚氨酯性能的影响[J].印染助剂,2013,30(7):19-22.
|
27 |
卢秀萍,王文杰.交联水性聚氨酯的制备及性能研究[J].聚氨酯工业,2006(4):18-21.
|
28 |
赖小娟.反应活性水性聚氨酯乳液的制备、成膜作用机理及性能研究[D].西安:陕西科技大学,2010.
|
/
〈 |
|
〉 |