To improve the thermal resistance, mechanical and tribological properties of a bismaleimide (BMI) resin, a novel hyperbranched polysiloxane with terminal functional amidogen groups (HBPSi-NH2) was prepared through a convenient one-step transesterification process. The raw materials included N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (KH-792) and excessive neopentyl glycol. Both Fourier transform infrared spectroscopy and nuclear magnetic resonance spectra were collected to determine the chemical structure of the HBPSi-NH2. The novel prepared HBPSi-NH2 was then used as a modification phase to blend with BMI (HBPSi-BMI), and the thermal properties of the HBPSi-BMI-cured resins were investigated by differential scanning calorimetry and thermogravimetry. The mechanical and tribological properties of HBPSi-BMI were also researched. The results suggested that both the thermal properties and the mechanical properties of HBPSi-BMI increased with the appropriate addition of HBPSi.

中文翻译：

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新型含酰胺基超支化聚硅氧烷的合成及聚合物合金与双马来酰亚胺树脂共混物的特性

为了提高双马来酰亚胺 (BMI) 树脂的耐热性、机械和摩擦学性能，通过方便的一步酯交换过程制备了一种新型的具有末端酰胺基团 (HBPSi-NH2) 的超支化聚硅氧烷。原料包括N-(2-氨基乙基)-3-氨基丙基三甲氧基硅烷(KH-792)和过量的新戊二醇。收集傅里叶变换红外光谱和核磁共振光谱以确定 HBPSi-NH2 的化学结构。然后将新制备的 HBPSi-NH2 作为改性相与 BMI (HBPSi-BMI) 共混，并通过差示扫描量热法和热重法研究 HBPSi-BMI 固化树脂的热性能。还研究了 HBPSi-BMI 的机械和摩擦学性能。