Study on the Curing Methods of Thermosetting Polysilazanes

IF 2.6 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2026-09-17 DOI:10.1111/ijac.70276

Guohui Zhu, Tingbang Liu, Mingcun Wang

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引用次数: 0

Abstract

Thermosetting PSZ-ICMA (polysilazane functionalized by 2-isocyanatoethyl methacrylate) was investigated regarding to the different curing methods, that is, hydrogen-transfer addition of HDI (hexamethylene diisocyanate), radical polymerization by TBPB (tert-butyl peroxybenzoate); photopolymerization by ethyl(2,4,6-trimethylbenzoyl)phenylphosphinate; and catalytical polymerization by NiNA (nickel naphthenate). When PSZs are cured by HDI, with the increase of HDI content, the gelation time gradually decreases; the exothermic peaks of DSC (differential scanning calorimetry) exit at 104°C and 192°C; and the weight loss during curing decreases to 27.3%. When PSZ-ICMAs are cured by TBPB, with the increase of ICMA content, the gelation time gradually shortens; the exothermic peak shifts slightly higher; and the weight loss during curing decreases. When PSZ-ICMAs are cured by photopolymerization, with the increase of ICMA content, the exothermic peaks of subsequent thermal cure maintain steadily. When PSZ-ICMAs are cured by NiNA, with the increase of ICMA content, the gelation time shortens remarkably; the exothermic peaks shift to lower positions, whereas the weight loss during curing decreases; with the increase of NiNA content, the gelation time shortens quickly; the exothermic peaks shift to lower temperatures, and the weight loss during curing decreases to 19.9%. All cured polysilazanes are verified to have high ceramic conversion yield.

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热固性聚硅氮烷固化方法的研究

研究了热固性PSZ-ICMA（2-异氰基甲基丙烯酸酯功能化聚硅氮烷）的固化方法，即氢转移加成HDI（六亚甲基二异氰酸酯），TBPB（过氧苯甲酸叔丁酯）自由基聚合；苯基膦酸乙酯（2,4,6-三甲基苯甲酰）的光聚合用NiNA（环烷酸镍）催化聚合。用HDI固化psz时，随着HDI含量的增加，胶凝时间逐渐缩短；差示扫描量热法在104℃和192℃有放热峰；在固化过程中，减重降低到27.3%。TBPB固化psz -ICMA时，随着ICMA含量的增加，胶凝时间逐渐缩短；放热峰位移略高；在腌制过程中，重量损失减小。光聚合固化psz -ICMA时，随着ICMA含量的增加，后续热固化的放热峰保持稳定。NiNA固化psz -ICMA时，随着ICMA含量的增加，胶凝时间显著缩短；放热峰移至较低的位置，而固化过程中的重量损失减小；随着NiNA含量的增加，凝胶时间迅速缩短；放热峰在较低温度下转移，养护过程中失重降低到19.9%。所有固化的聚硅氮烷均具有较高的陶瓷转化率。

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来源期刊

International Journal of Applied Ceramic Technology 工程技术-材料科学：硅酸盐

CiteScore

3.90

自引率

9.50%

发文量

280

审稿时长

4.5 months

期刊介绍： The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas: Nanotechnology applications; Ceramic Armor; Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors); Ceramic Matrix Composites; Functional Materials; Thermal and Environmental Barrier Coatings; Bioceramic Applications; Green Manufacturing; Ceramic Processing; Glass Technology; Fiber optics; Ceramics in Environmental Applications; Ceramics in Electronic, Photonic and Magnetic Applications;