Scholarlink

<p>Currently, the predominant raw materials for phthalonitrile resin is petroleum-based polyphenols, which are generally harmful to human health. By utilizing green biomass materials, the syringaldehyde intermediates (SYR-I) were synthesized through nucleophilic substitution with 4-nitro-phthalonitrile. The intermediate was then reacted with 4,4′-diamino-diphenyl ether to produce the bio-based monomer (ODA-SYR). The monomer has a relatively low melting point of 149 °C and a wide processing window of 153 °C, which facilitates the processing of the resin. Thermogravimetric analysis revealed that the temperature at 5% weight loss of ODA-SYR-PN resin is 393 °C, with a char yield of 68.9% at 800 °C. Dynamic mechanical analysis showed that as the curing agent content increased from 2 to 5%, the storage modulus of the ODA-SYR-PN resin reached 3528&#xa0;MPa. Due to the decomposition of the resin at 350&#xa0;°C, no glass transition temperature was observed. The bending test demonstrated that the ODA-SYR-PN resin exhibited a flexural strength of 68&#xa0;MPa and a flexural modulus of 3056&#xa0;MPa, maintaining mechanical properties comparable to other petroleum-based phthalonitrile resins. This research presents a novel approach for the production of high-temperature-resistant phthalonitrile resin using bio-based raw materials. Utilizing bio-based raw materials helps reduce dependence on petroleum resources and alleviates their environmental and health impacts.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Preparation and properties of novel bio-based phthalonitrile resin derived from syringaldehyde

  • 期刊论文

  • 发表日期：

    2026年4月20日

查看全文
  • Shiyu Zhang,
  • Xiaoming Sang,
  • Weihao Yin,
  • Qian Jiang,
  • Minjie Wu,
  • Xinggang Chen

摘要

Currently, the predominant raw materials for phthalonitrile resin is petroleum-based polyphenols, which are generally harmful to human health. By utilizing green biomass materials, the syringaldehyde intermediates (SYR-I) were synthesized through nucleophilic substitution with 4-nitro-phthalonitrile. The intermediate was then reacted with 4,4′-diamino-diphenyl ether to produce the bio-based monomer (ODA-SYR). The monomer has a relatively low melting point of 149 °C and a wide processing window of 153 °C, which facilitates the processing of the resin. Thermogravimetric analysis revealed that the temperature at 5% weight loss of ODA-SYR-PN resin is 393 °C, with a char yield of 68.9% at 800 °C. Dynamic mechanical analysis showed that as the curing agent content increased from 2 to 5%, the storage modulus of the ODA-SYR-PN resin reached 3528 MPa. Due to the decomposition of the resin at 350 °C, no glass transition temperature was observed. The bending test demonstrated that the ODA-SYR-PN resin exhibited a flexural strength of 68 MPa and a flexural modulus of 3056 MPa, maintaining mechanical properties comparable to other petroleum-based phthalonitrile resins. This research presents a novel approach for the production of high-temperature-resistant phthalonitrile resin using bio-based raw materials. Utilizing bio-based raw materials helps reduce dependence on petroleum resources and alleviates their environmental and health impacts.

Graphical abstract