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北京石油化工学院2026年研究生招生接收调剂公告
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kesijin

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采用沉淀法制备了羟基磷灰石。将聚乙烯醇(PVA)和羟基磷灰石(HA)按照一定的比例混合,通过冷冻-融化法制备出PVA/HA复合水凝胶。研究羟基磷灰石含量、冷冻―融化循环次数对复合水凝胶含水率、溶胀性的影响。结果表明随着羟基磷灰石的含量从0.000 %,1.011 %,3.006 %,5.008 %,7.010 %,10.01 %,15.01 %逐渐增加,含水率先逐渐降低,在含量大于11.76 %后逐渐增大而溶胀比逐渐降低;随着冷冻-融化循环次数的增加,含水率逐渐降低而溶胀比逐渐增大。

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The preparation of hydroxyapatite by precipitation. Polyvinyl alcohol (PVA) and will hydroxyapatite (HA) according to certain mixing ratio, prepared by frozen - melt out of PVA/HA compound gel. Research hydroxyapatite content, frozen -- to melt circulating frequency composite hydrogel moisture content, brasion resistance effects. Results show that with the content of hydroxyapatite from 0.000 %, 1.011 %, 3.006 %, 5.008 %, 7.010 10.01 15.01 percent, %, increase gradually, the water % lower than in content, and gradually increase gradually 11.76 % than gradually reduce swelling, As the cycle melt frozen - increases, moisture content and gradually reduce swelling ratio increased gradually.默哀一下 祝福玉树!!
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