本文目录一览:
- 1、不饱和树脂的密度是多少
- 2、树脂密度是多少呢?
- 3、环氧树脂的密度是多少?
- 4、环氧树脂密度
不饱和树脂的密度是多少
密度为1.4-2.2g/cm3
不饱和聚酯树脂是一种热固性树脂,当其在热或引发剂的作用下,可固化成为一种不溶不融的高分子网状聚合物。但这种聚合物机械强度很低,不能满足大部分使用的要求,当用玻璃纤维增强时可成为一种复合材料,俗称"玻璃钢"(英文名Fiber Reinforced Plastics 简称FRP)。"玻璃钢"的机械强度等各方面性能与树脂浇铸体相比有了很大的提高。
FRP的密度为1.4-2.2g/cm3,比钢轻4-5倍,而其强度却不小,其比强度超过型钢、硬铝和杉木。这对于航空、航天、火箭、导弹、军械及运输等需要减轻自重的产品具有非常重要的意义。例如波音747喷气客机在主要结构上应用的FRP部件达2.2吨,有效地节省了飞机燃料,提高了航速,延长了续航时间,增加了有效载荷。
树脂密度是多少呢?
树脂密度是1.117g/cm³树脂。树脂在受热的状态下,是会软化或者熔融,而在软化的时候,将会在外力的影响下出现流动的情况。另外,树脂在常温的情况下,是属于固态、半固态的产品、液体有机聚合物。使用树脂的过程中,否则容易导致树脂的性能降低,严重的情况下,还有可能导致树脂的吸附能力直接散失,无法正常使用。
离子交换树脂的密度意义
湿真密度。湿真密度是指离子交换树脂在水中充分膨胀后的真密度。这里的“颗粒体积”不包括树脂颗粒间的孔隙。湿真密度同反洗分层情况和树脂沉降性能有关。其相对密度值二般在1.04~1.30之间,其中阳棚旨一般为1.24~1.29,阴树月旨一般为1.06~1.11。
湿视密度。湿视密度也有称“湿堆密度”,指离子交换树脂在水中充分膨胀后的堆积密度。这里的“堆体积”包括离子交换树脂颗粒问的孔隙。湿视密度常用来计算交换床需要装树脂的量。
环氧树脂的密度是多少?
环氧树脂是指含有两个以上环氧基的一类聚合物。它是环氧氯丙烷和双酚A或多元醇缩合的产物。由于环氧树脂的化学活性。
它是一种热固性树脂,可以被各种含活性氢的化合物开环,交联固化成网状结构。
一般分类根据强度,耐热水平和特点,16种环氧树脂的主要品种。
包括通用胶、结构胶、耐高温,耐低温胶胶、水和湿表面胶、导电胶、光学胶、塑料焊接、环氧树脂膜、泡沫塑料、塑性应变,软材料胶粘剂、密封剂、特殊胶水,潜伏性固化胶水,土建胶水与施工16种。
环氧树脂的密度一般为1.6-2.3g/cm。
扩展资料:
物理性质:
环氧树脂具有二级羟基,可与异氰酸酯反应。将环氧树脂直接加入到聚氨酯胶粘剂中含有羟基的组分中作为多元醇。只有羟基参与了反应,而环氧基没有反应。
修改 *** :
1、选择固化剂。
2、添加活性稀释剂。
3、添加填料。
4、添加特殊的热固性或热塑性树脂。
5、改善环氧树脂本身。
参考资料:百度百科-环氧树脂
环氧树脂密度
环氧树脂的密度为1.2克每立方厘米。环氧树脂是一种高分子聚合物,为热固性树脂,我国于1958年开始对环氧树脂进行研究,并以很快的速度投入了工业生产,目前以及生产了各种类型的新型环氧树脂。
环氧树脂有哪些用途
环氧树脂具有附着力强、施工简便等良好的工艺特点,主要用于涂料行业和电子行业,其中在涂料中的应用占比较大。
环氧树脂广泛用于装有电子元件和线路的器件的灌封绝缘,目前已经成为电子工业的基础材料之一。
环氧树脂可以制成涂料、复合材料、胶粘剂和模压材料等等,在国民经济的各个领域中都得到了广泛的应用。
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