硅溶胶/三聚氰胺乙二醛树脂的制备及性能研究。

IF 1.8 4区 化学 Q3 POLYMER SCIENCE Designed Monomers and Polymers Pub Date : 2023-01-01 DOI:10.1080/15685551.2022.2162280
Zexiu Qin, Yinliang Zhang, Mingli Liu, Chunfeng Li
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引用次数: 3

摘要

本研究制备了一种功能性、环保型的木材浸渍复合改性剂。用KH-560对硅溶胶表面进行了改性。以改性硅溶胶、三聚氰胺、乙二醛为原料。采用原位聚合法制备了硅溶胶/三聚氰胺乙二醛树脂(以下简称硅溶胶/MG)复合改性剂。对复合改性剂的理化性能(粘度、固含量等)进行了评价。采用FTIR光谱、粒度分布、TG和DSC等方法对其结构和热性能进行了表征和分析。结果表明,随着硅溶胶质量的增加,复合改性剂的粘度和固含量降低,FTIR光谱在473 cm-1和1101 cm-1处出现峰值,分别属于Si-O-Si键的弯曲振动和拉伸振动,表明改性硅溶胶被成功引入MG树脂中。当改性硅溶胶质量分数为30% ~ 40%时,复合改性剂的粒径分布较为均匀。热重分析发现,与未改性树脂相比,复合改性剂的热稳定性有明显提高。DSC分析表明,改性硅溶胶的加入使改性剂的固化温度从115.5℃降低到107.9℃。
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Preparation and properties of silica sol/melamine glyoxal resin.

In this study, a composite modifier for wood impregnation is prepared, which is functional and environmentally friendly. The surface of silica sol was modified by using KH-560. The modified silica sol, melamine, and glyoxal were used as raw materials. The silica sol/melamine glyoxal resin (from now on referred to as Silica sol/MG) composite modifier was prepared based on in-situ polymerization. The physicochemical properties (viscosity, solid content and etc.) of the composite modifier were evaluated. The structural and thermal properties were characterized and analyzed by FTIR spectroscopy, particle size distribution, TG and DSC. The results showed that the viscosity and solid content of the composite modifier decreased with the increase in the mass of the silica sol. The FTIR spectroscopy showed peaks at 473 cm-1 and 1101 cm-1, which were assigned to bending and stretching vibrations of the Si-O-Si bond, respectively, indicating that the modified silica sol was successfully introduced into the MG resin. When the modified silica sol mass fraction was 30%-40%, the particle size distribution of the composite modifier was relatively uniform. TG analysis found that the thermal stability of the composite modifier was significantly improved compared with the unmodified resin. DSC analysis showed that adding the modified silica sol reduced the curing temperature of the modifier from 115.5 °C to 107.9 °C.

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来源期刊
Designed Monomers and Polymers
Designed Monomers and Polymers 化学-高分子科学
CiteScore
3.30
自引率
0.00%
发文量
28
审稿时长
2.1 months
期刊介绍: Designed Monomers and Polymers ( DMP) publishes prompt peer-reviewed papers and short topical reviews on all areas of macromolecular design and applications. Emphasis is placed on the preparations of new monomers, including characterization and applications. Experiments should be presented in sufficient detail (including specific observations, precautionary notes, use of new materials, techniques, and their possible problems) that they could be reproduced by any researcher wishing to repeat the work. The journal also includes macromolecular design of polymeric materials (such as polymeric biomaterials, biomedical polymers, etc.) with medical applications. DMP provides an interface between organic and polymer chemistries and aims to bridge the gap between monomer synthesis and the design of new polymers. Submssions are invited in the areas including, but not limited to: -macromolecular science, initiators, macroinitiators for macromolecular design -kinetics, mechanism and modelling aspects of polymerization -new methods of synthesis of known monomers -new monomers (must show evidence for polymerization, e.g. polycondensation, sequential combination, oxidative coupling, radiation, plasma polymerization) -functional prepolymers of various architectures such as hyperbranched polymers, telechelic polymers, macromonomers, or dendrimers -new polymeric materials with biomedical applications
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