Preparation method of a gradient-distributed porous heat-insulating high-strength film functionalized core soft bag for lunar exploration and soil collection

A technology of coring soft bags and gradient distribution, applied in the directions of bags, sacks, non-woven fabrics, etc., can solve the problems of fiber performance degradation and accidental breakage of soft bags, etc., to meet functional requirements, good thermal protection, and avoid pollution. Effect

Active Publication Date: 2017-06-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing core-taking soft bag is easily affected by the high temperature of the drilling mechanism and cause the fiber performance to decline, which leads to the accidental breakage of the soft bag in the process of lunar exploration and soil extraction, and to provide a gradient distribution Preparation method of porous heat-insulating high-strength film functionalized soft bag for core-taking for lunar exploration

Method used

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  • Preparation method of a gradient-distributed porous heat-insulating high-strength film functionalized core soft bag for lunar exploration and soil collection
  • Preparation method of a gradient-distributed porous heat-insulating high-strength film functionalized core soft bag for lunar exploration and soil collection
  • Preparation method of a gradient-distributed porous heat-insulating high-strength film functionalized core soft bag for lunar exploration and soil collection

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specific Embodiment approach 1

[0035] Embodiment 1: The present embodiment is a preparation method of a gradient-distributed porous heat-insulating high-strength thin-film functionalized coring bag for lunar soil extraction, which is completed according to the following steps:

[0036] 1. Warp 80 to 300 fiber warp yarns, and then use a loom to weave a tubular flexible fabric, and then cut it neatly and trim the edges to obtain a core with a diameter of 16.5mm to 27mm and a length of 200mm to 2500mm soft bag;

[0037] The fiber warp yarn described in the step 1 is one of Kevlar fibers of 50 denier to 1600 denier or a mixed fiber of several thereof;

[0038] The loom described in step 1 is a shuttle loom, a shuttleless loom or a circular loom;

[0039] 2. Prepare Kevlar nanofiber solutions with different concentrations:

[0040] ①, prepare a dark red Kevlar nanofiber solution with a mass fraction of 0.3%;

[0041] Use nitrogen to purge the dry three-necked flask for 20min-30min, then add 500mL dimethyl sul...

specific Embodiment approach 2

[0065] Embodiment 2: The difference between this embodiment and Embodiment 1 is: in step 1, 168 fiber warp yarns are warped, and then a loom is used to plain weave a tubular flexible fabric, and then neatly cut and edged to obtain A soft core bag with a diameter of 20.5mm and a length of 200mm. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0066]Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the fiber warp described in step 1 is Kevlar-29 aramid fiber of 130 denier. Other steps are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparing method for a coring soft bag used for lunar exploration soil sampling, in particular to a preparing method for a gradient distribution porous heat-insulation high-strength film functional coring soft bag used for lunar exploration soil sampling. The purpose is to solve the problem that in the lunar exploration soil sampling process, an existing coring soft bag is prone to being affected by high temperature of a drilling mechanism to cause accident fracture. The preparing method includes the steps that 1, a coring soft bag is prepared; 2, Kevlar nanofiber solutions of different concentrations are prepared; 3, a vacuum filtration device is constructed; 4, the gradient distribution porous heat-insulation high-strength film functional coring soft bag used for lunar exploration soil sampling is obtained through compounding. The inner side temperature inside the prepared gradient distribution porous heat-insulation high-strength film functional coring soft bag used for lunar exploration soil sampling is reduced by 27-30% compared with that of an untreated coring soft bag, and the breaking strength is improved by 17.2-25%. The gradient distribution porous heat-insulation high-strength film functional coring soft bag used for lunar exploration soil sampling can be obtained.

Description

technical field [0001] The invention relates to a preparation method of a soft core bag for lunar exploration and soil extraction. Background technique [0002] China's lunar exploration project has fully entered the third phase of the three-step development plan of "circling, landing, and returning". It is planned to carry out the Chang'e 5 mission around 2017 to achieve unmanned automatic sampling and return of lunar soil, which will achieve epoch-making significance. Lunar drilling-coring-return experiment. During this experiment, the soft bag for drilling, sampling and coring needs to effectively complete the acquisition and bedding maintenance of lunar soil samples. High coring rate, no sample leakage, no sample drop, high bedding retention. The normal operation of the soft core bag is the core of the whole mission of lunar exploration and soil extraction, and it will also face many work risks. In the process of following the drilling mechanism to excavate soil, cove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03D3/02B65D30/04D01D5/00D04H1/42D04H1/70
CPCB65B3/00D01D5/00D03D3/02D04H1/42D04H1/70
Inventor 黄玉东王芳吴亚东黎俊刘丽
Owner HARBIN INST OF TECH
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