甲苯二异氰酸酯改性PVA和HEC混合乳胶的研究
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摘要
研究了在水介质中采用少量甲苯二异氰酸酯(TDI)对HEC和PVA混合胶水进行交联改性,合成了一种新型单组份亮白色的乳胶。采用正交实验,以压缩剪切强度为主要考察指标,优选出制备改性PVA和HEC混合乳胶最佳工艺条件为:PVA加入量为8.0 g/100 mL、HEC加入量为4.0 g/100 mL、TDI加入量为3.0 mL/100 mL、反应温度为60℃、反应时间为90min,催化剂-D加入量为2.0 mL/100 mL。该条件下合成的乳胶压缩剪切强度可达到7.19 MPa。
In this paper, a new type of single component bright white glue is synthesized in water medium by a small amount of toluene diisocyanate(TDI) which cross-linked and modified PVA and HEC. The optimum technical conditions are selected by the orthogonal experimental method. The results show when the addition of PVA is 8.0 g/100 mL-1, HEC is 4.0 g/100 mL, TDI was 3.0 mL/100 mL, Catalyst-D is 2.0 mL/100 mL, the reaction temperature is 60 ℃, the reaction time is 90 min, the compression shear strength of glue is 7.19 MPa.
In this paper, a new type of single component bright white glue is synthesized in water medium by a small amount of toluene diisocyanate(TDI) which cross-linked and modified PVA and HEC. The optimum technical conditions are selected by the orthogonal experimental method. The results show when the addition of PVA is 8.0 g/100 mL-1, HEC is 4.0 g/100 mL, TDI was 3.0 mL/100 mL, Catalyst-D is 2.0 mL/100 mL, the reaction temperature is 60 ℃, the reaction time is 90 min, the compression shear strength of glue is 7.19 MPa.
引文
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[9]潘婵,龙一飞,赵军丽,等.TTI交联聚乙烯醇木材胶黏剂的研究[J].林产工业,2015,42(1):27-30,38.
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[11]董锐,马磊,邵荣,等.聚乙烯醇-羟乙基纤维素共混膜的制备及性能[J].塑料,2011,40(6):83-86.
[12]Patruyo L G,Müller A J,Sáez A E.Shear and extensional rheology of solutions of modified hydroxyethyl celluloses and sodium dodecyl sulfate[J].Polymer,2002,43(24):6481-6493.
[2]Mortensen N G.Properties and applications of poly(vinyl alcohol)[J].Journal of Polymer Science Part B Polymer Letters,1967,5(8):348-349.
[3]苏秀霞,景洁,刘崇喜,等.聚乙烯醇商标胶耐水性研究[J].中国胶粘剂,2012,21(1):42-44.
[4]Paris J L,Kamke F A.Quantitative wood-adhesive penetration with X-ray computed tomography[J].International Journal of Adhesion and Adhesives,2015,61:71-80.
[5]Gao Z,Wang W,Zhao Z,et al.Novel whey protein-based aqueous polymer-isocyanate adhesive for glulam[J].Journal of Applied Polymer Science,2011,120(1):220-225.
[6]Niu X Y.Study on Aqueous Polymer Isocyanate Adhesive Pressing Changbai Mountain Abies Nephrolepis Furniture Parts[J].Advanced Materials Research,2015,1079-1080:54-57.
[7]夏赤丹,余汉年,张雄杰.甲苯二异氰酸酯和硼砂交联改性聚乙烯醇胶水的研究[J].胶体与聚合物,1999(3):12-14.
[8]夏赤丹,孟亮,张春玲,等.三苯基甲烷三异氰酸酯交联聚乙烯醇木材粘合剂的研究[J].林业科学,2003,39(3):121-124.
[9]潘婵,龙一飞,赵军丽,等.TTI交联聚乙烯醇木材胶黏剂的研究[J].林产工业,2015,42(1):27-30,38.
[10]Elsheikh M A,Elrafie S M,Abdelhalim E S,et al.Green Synthesis of Hydroxyethyl Cellulose-Stabilized Silver Nanoparticles[J].Journal of Polymers,2013(1):1-12.
[11]董锐,马磊,邵荣,等.聚乙烯醇-羟乙基纤维素共混膜的制备及性能[J].塑料,2011,40(6):83-86.
[12]Patruyo L G,Müller A J,Sáez A E.Shear and extensional rheology of solutions of modified hydroxyethyl celluloses and sodium dodecyl sulfate[J].Polymer,2002,43(24):6481-6493.