Organic–inorganic hybrid composites have received much attention of scientists in the recent years due to the notable improvement of thermal properties without using of organic or inorganic nanoparticles. Hence, we have developed a facile strategy to prepare a 3D hybrid network based on silane materials and novolac resin via sol–gel process. At first step, novolac resin was prepared by general procedure with appropriate thermal properties and then modified with (3-chloropropyl)triethoxysilane (CPTES) to form MNR. In second step, to cure MNR and prepare hybrid composite structures, general amine-cured system and sol–gel process were applied to prepare MNH and MNSG samples, respectively. XRD analysis was used to support the formation of silane networks in hybrid samples. Investigation of thermal properties by DSC and TGA showed that cured samples had much higher thermal stability and char yield with respect to novolac and modified resin (MNR) originated from formation of 3D Si–O–Si network. Presented method limited some disadvantages of using nanoparticles such as aggregation and poor distribution. Such hybrid composites with high thermal stability have potential applications in advanced fields such industrial molds, coatings, adhesives and composites.

中文翻译：

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通过简单的溶胶-凝胶过程一锅法合成具有高热性能的有机硅杂化体

近年来，有机-无机杂化复合材料由于不使用有机或无机纳米粒子而显着改善了热性能，因此受到了科学家的广泛关注。因此，我们已经开发出了一种简便的策略，可通过溶胶-凝胶工艺制备基于硅烷材料和线型酚醛树脂的3D混合网络。第一步，通过常规程序以适当的热性能制备线型酚醛树脂，然后用（3-氯丙基）三乙氧基硅烷（CPTES）改性以形成MNR。第二步，为固化MNR并制备杂化复合结构，分别采用通用胺固化体系和溶胶-凝胶工艺分别制备MNH和MNSG样品。XRD分析用于支持混合样品中硅烷网络的形成。通过DSC和TGA进行的热性能研究表明，相对于由3D Si–O–Si网络形成的线型酚醛清漆和改性树脂（MNR），固化样品具有更高的热稳定性和炭收率。提出的方法限制了使用纳米颗粒的一些缺点，例如聚集和分布不均。这种具有高热稳定性的杂化复合材料在工业模具，涂料，粘合剂和复合材料等先进领域中具有潜在的应用前景。