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Biodegradable seismic charge housing and preparation method thereof

A technology of seismic source grain shell and biodegradation, which is applied in the field of biodegradable seismic grain shell and its preparation, and can solve the problems that there is no precedent for the development of fully biodegradable seismic grain shell

Active Publication Date: 2015-03-04
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In China, the production technology of seismic source grain shells made of polyethylene is very mature, but there is no precedent for the development of fully biodegradable seismic source grain shells.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1. Preparation of complete biodegradable seismic source grain shell

[0027] The mass content of each substance in the material formula is as follows: polybutylene succinate-co-butylene adipate (number average molecular weight is 100,000) 98.4%, polycarbodiimide (number average molecular weight is 614) 1 %, triphenyl phosphite 0.2%, B2150.2%, talc powder 0.2%, after simple mixing and adding to the single-screw extruder, set the temperature of the feed end to 60 ° C, the temperature of the middle section to 140 ° C, the extruder head The temperature is 100°C, and the shell of the seismic source grain is obtained.

[0028] The measured transverse tensile yield strength of the casing is 32.5MPa, and the longitudinal tensile yield strength is 29.3MPa, and the shell can maintain its shape without yielding when charged. The entire shell will not be damaged if it falls freely from a height of 6m. The entire housing can meet the application needs. In addition, throug...

Embodiment 2

[0029] Example 2, Preparation of Completely Biodegradable Seismic Source Grain Shell

[0030] The mass content of each substance in the material formula is as follows: polybutylene succinate-co-1,2,3 glycerol succinate (number average molecular weight is 200,000) 93%, polycarbodiimide (number average The molecular weight is 912) 1%, B2155%, boron nitride 1%, after simple mixing and adding to the single-screw extruder, the temperature of the feed end is set to 180°C, the temperature of the middle section is 230°C, and the temperature of the extruder head is 190°C , to obtain the source grain shell.

[0031] The lateral tensile yield strength of the shell of the seismic source charge was measured to be 33.1MPa, and the longitudinal tensile yield strength was 31.9MPa, which can maintain the shape without yielding when charged. The entire shell will not be damaged if it falls freely from a height of 6m. The entire housing can meet the application needs. In addition, through the...

Embodiment 3

[0032] Example 3, Preparation of Completely Biodegradable Seismic Source Grain Shell

[0033] The material is polybutylene succinate (the number average molecular weight is 50,000) 100%. Add the single-screw extruder, set the feed end temperature to 120°C, the middle section temperature to 190°C, and the extruder head temperature to 140°C, the shell of the source grain was obtained.

[0034] The lateral tensile yield strength and longitudinal tensile yield strength of the shell of the seismic source charge column are measured to be 30.7MPa and 30.3MPa, and the shape can be maintained without yielding when charged. The entire shell will not be damaged if it falls freely from a height of 6m. The entire housing can meet the application needs. Through the degradation test of shell fragments under ISO14855 composting conditions, the degradation rate was 70.1% within 3 months. The source powder column is soaked in water and the casing cover made of injection molding is bonded int...

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PUM

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Abstract

The invention discloses a biodegradable seismic charge housing applicable to petroleum seismic exploration and a preparation method of the biodegradable seismic charge housing. The biodegradable seismic charge housing is characterized in that a biodegradable seismic charge is prepared from completely biodegradable polyester, a hydrolysis resisting agent, a stabilizer, a nucleating agent and an auxiliary. The preparation method specifically comprises the following steps of: mixing the raw materials through an extruder; and then carrying out extrusion and blow molding through a machine head die, thus obtaining the biodegradable seismic charge housing. The biodegradable seismic charge housing provided by the invention can be degraded into small molecules in the soil within a short time, and can meet the usage requirements on mechanical property, stability and degradability, etc.

Description

technical field [0001] The invention relates to a biodegradable seismic source powder shell and a preparation method thereof. Background technique [0002] The traditional shell of the seismic source charge uses general-purpose plastics such as polyethylene and polypropylene as raw materials. After the explosive fails to explode, the plastic shell of this source charge will remain in the soil for several years and cannot be degraded, so that the explosive remains explosive. , thus causing serious safety and environmental problems. In recent years, with the development of the plastics industry and the enhancement of people's safety awareness, the safety of seismic source grains caused by the use of traditional plastic shells is gradually attracting widespread attention. How to effectively solve the safety problem of blasting charge is more and more important. Fully biodegradable plastic, because it can be degraded in the natural environment, after the explosive is rejected,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/00C08L67/02B29C49/04
Inventor 郭宝华唐硕徐军李彩霞夏鹏翎田正刚
Owner TSINGHUA UNIV
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