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本文主要介绍以电子加速器的高剂量率电子射线合成水凝胶材料的研究,主要结果如下: 1.在动力学进程中,当转化率约20%时才产生凝胶。完成动力学进程所需辐照剂量只需0.5—2.0×10~0rad,辐照时间为1—4分钟; 2.聚合初速率(V_0)与剂最率(Ⅰ)的关系如下:HEMA+EGDMA体系:V_0∞I~(0.53); HEMA+IOMA+EGDMA体系:V_0∞I~(0.48); HEMA+IOAM+EGDMA+RH体系:V_0∞I~(0.50); 3.在聚合物链中引入疏水性单体,可以大大改善水凝胶材料的强度,但含水量相应降低。 4.本材料已用于超薄型软接触镜的生产。
In this paper, we mainly introduce the electron beam-to-electron (HED) synthesis of hydrogel materials using electron accelerator. The main results are as follows: 1. In the kinetic process, gels are formed when the conversion rate is about 20%. The irradiation dose required to complete the kinetic process is only 0.5-2.0 × 10 ~ 0rad, the irradiation time is 1-4 minutes; 2. The relationship between the initial rate of polymerization (V_0) and the rate of the agent (Ⅰ) is as follows: HEMA + EGDMA System: V_0∞I ~ (0.53); HEMA + IOMA + EGDMA system: V_0∞I ~ (0.48); HEMA + IOAM + EGDMA + RH system: V_0∞I ~ (0.50) Hydrophobic monomer, can greatly improve the strength of the hydrogel material, but a corresponding reduction in water content. 4. This material has been used for the production of ultra-thin soft contact lenses.