Effect of Copper (II) Sulfate on the Properties of Urea Formaldehyde Adhesive

被引：2

作者：

Zhao, Hui ^{[1
,2
]}

Li, Xianzhen ^{[2
]}

Wang, Xi ^{[2
]}

Meng, Mianwu ^{[1
,2
]}

Wang, Xiujian ^{[3
]}

Huang, Siyu ^{[1
,2
]}

Gan, Weixing ^{[2
]}

机构：

[1] Guangxi Normal Univ, Key Lab Ecol Rare & Endangered Species & Environm, Guilin 541004, Peoples R China

[2] Guangxi Normal Univ, Coll Environm & Resources, Guilin 541004, Peoples R China

[3] Guangxi Normal Univ, Sch Chem & Pharmaceut Sci, Guilin 541004, Peoples R China

来源：

POLYMERS | 2022年 / 14卷 / 01期

关键词：

urea formaldehyde adhesive; free formaldehyde; formaldehyde release; reduction; copper (II) sulfate; mechanical properties; RESIN ADHESIVE; DEPOSITION; SCAVENGER; EMISSION; TANNIN; MEAL;

D O I：

10.3390/polym14010094

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The purpose of this work is to investigate the effects of copper (II) sulfate on the formaldehyde release and the mechanical properties of urea formaldehyde (UF) adhesive. Copper (II) sulfate has been used as a formaldehyde scavenger in UF resin, and its effects on the physical and chemical properties of UF adhesive have been studied. Moreover, the mechanical properties and formaldehyde release of plywood prepared with modified UF resin have been determined. The UF resin has been characterized by Fourier-transform infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA). FTIR spectra showed that the addition of copper (II) sulfate to the UF resin does not affect the IR absorptions of its functional groups, implying that the structure of UF is not modified. Further results showed that the free formaldehyde content of the UF resin incorporating 3% copper (II) sulfate was 0.13 wt.%, around 71% lower than that of the untreated control UF adhesive. With a copper (II) sulfate content of 3%, the formaldehyde release from treated plywood was 0.74 mg center dot L-1, around 50% lower than that from the control UF adhesive, and the bonding strength reached 1.73 MPa, around 43% higher than that of the control.

引用

页数：9

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