• 试验表明,采用复合催化法容易制备聚合速度软化适宜法用热塑性酚醛树脂

    The results showed that a kind of fast curing novolac for shell process whose softing point is reasonable was easily prepared by compound catalysis .

    youdao

  • 试验表明,采用复合催化法容易制备聚合速度软化适宜法用热塑性酚醛树脂

    The results showed that a kind of fast curing novolac for shell process whose softing point is reasonable was easily prepared by compound catalysis.

    youdao

  • 采用沥青薄膜加热试验紫外线老化试验,对沥青的入度、软化延度和粘度性能指标进行试验研究。

    By thin film oven test and ultraviolet photooxidation test, asphalt performance indices were studied, including penetration, softening point, ductility and viscosity.

    youdao

  • 试验研究软化2 0 4树脂全钢子午线轮胎三角中的应用

    The application of the low softening point 204 resin in the bead filler compound of BTR tire was investigated.

    youdao

  • 试验研究软化2 0 4树脂全钢子午线轮胎三角中的应用

    The application of the low softening point 204 resin in the bead filler compound of BTR tire was investigated.

    youdao

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