The utility model discloses a gasket mechanism for capillary die of solid propellant rheometer, which comprises a material barrel, a gasket, a capillary die and a locking mechanism. The locking mechanism is arranged at the bottom of the material barrel, and capillary die and gasket are arranged above the locking mechanism in turn. The material barrel is provided with two sections with different aperture, and the diameter of the upper section is smaller than that of the lower section. The capillary moulds and gaskets are arranged in the aperture of the upper section of the barrel, the locking mechanism is arranged in the aperture of the lower section, the outer diameter of the capillary moulds is smaller than that of the upper section of the barrel, the gaskets are arranged with oblique openings, and the outer diameter of the outer barrel surface of the gaskets is larger than that of the upper section of the barrel when the outer barrel surface of the gasket is not under force, and the outer diameter of the outer barrel surface of the gasket is greater The diameter of the hole in the upper section of the barrel is slightly smaller than or equal to that in the upper section of the barrel. The gasket and the capillary die are all provided with inner holes. The structure design of the utility model is ingenious, which can meet the requirements of rheological property test of solid propellant materials and is safe and reliable at the same time.
【技术实现步骤摘要】
一种固体推进剂流变仪毛细管口模垫片机构
本技术属于流变仪装置
,尤其涉及一种固体推进剂流变仪毛细管口模垫片机构。
技术介绍
流变性能是高聚物的重要性能,流变性能的好坏对高聚物的加工和制备有重要的影响,因而准确测定高聚物的流变数据至为关键。目前国际上通用的毛细管口模流变仪为双料筒毛细管口模流变仪,可以很好地消除入口压力降,并能较好的预测材料的拉伸流变性能。固体推进剂具有黏度高、易爆炸,对压力、温度、保温时间的敏感度较高等特点。普通的流变仪无法满足固定推进剂的流变性能测试要求,因此需要具有特殊结构满足特殊要求的流变仪。实验过程中固体推进剂滞留于毛细管口模上端面或者留存于毛细管口模与料筒内壁的间隙中会产生安全隐患。
技术实现思路
为了解决以上问题,本技术提供了一种固体推进剂流变仪毛细管口模垫片机构。本技术是这样实现的:一种固体推进剂流变仪毛细管口模垫片机构,包括:料筒,还包括垫片、毛细管口模、锁紧机构,所述的锁紧机构设置在料筒的底部,在锁紧机构上方依次设置有毛细管口模、垫片,所述的料筒设置有孔径不同的两段,上部段孔直径小于下部段孔直径,所述的毛细管口模、垫片设置在料筒的上部段孔径内,所述的锁紧机构设置在下部段孔径内,所述的毛细管口模的外径小于料筒上部段孔直径,所述的垫片设置有斜开口,所述的垫片的外筒面不受力时外径大于料筒上部段孔直径,所述的垫片的外筒面受力时外径等于或略小于料筒上部段孔直径,所述垫片、毛细管口模都设置有内孔。优选的,所述垫片的斜开口宽度0.02-0.15mm。优选的,所述的垫片端面到内孔为斜面过渡,内壁成圆锥形面。优选的,所述的垫片未受力时的直径略 ...
【技术保护点】
1.一种固体推进剂流变仪毛细管口模垫片机构,包括:料筒,其特征在于,还包括垫片、毛细管口模、锁紧机构,所述的锁紧机构设置在料筒的底部,在锁紧机构上方依次设置有毛细管口模、垫片,所述的料筒设置有孔径不同的两段,上部段孔直径小于下部段孔直径,所述的毛细管口模、垫片设置在料筒的上部段孔径内,所述的锁紧机构设置在下部段孔径内,所述的毛细管口模的外径小于料筒上部段孔直径,所述的垫片设置有斜开口,所述的垫片的外筒面不受力时外径大于料筒上部段孔直径,所述的垫片的外筒面受力时外径等于或略小于料筒上部段孔直径,所述垫片、毛细管口模都设置有内孔。
【技术特征摘要】
1.一种固体推进剂流变仪毛细管口模垫片机构,包括:料筒,其特征在于,还包括垫片、毛细管口模、锁紧机构,所述的锁紧机构设置在料筒的底部,在锁紧机构上方依次设置有毛细管口模、垫片,所述的料筒设置有孔径不同的两段,上部段孔直径小于下部段孔直径,所述的毛细管口模、垫片设置在料筒的上部段孔径内,所述的锁紧机构设置在下部段孔径内,所述的毛细管口模的外径小于料筒上部段孔直径,所述的垫片设置有斜开口,所述的垫片的外筒面不受力时外径大于料筒上部段孔直径,所述的垫片的外筒面受力时外径等于或略小于料筒上部段孔直径,所述垫片、毛细管口模都设置有内孔。2.根据权...
【专利技术属性】
技术研发人员:李振中,赵凯晨,仁卫杰,
申请(专利权)人:太原工业学院,
类型:新型
国别省市:山西,14
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