Method for preparing high-strength solid buoyancy material

A solid buoyancy, high-strength technology, applied in the field of preparation of solid buoyancy materials, can solve the problems of low compressive strength and high density of composite foam, and achieve the effects of improving production efficiency, reducing labor intensity, and enriching varieties and application scopes.

Active Publication Date: 2014-03-26
SHANGHAI COMPOSITES SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the present invention, by formulating formula design and optimizing technical process, on the basis of preparing composite foam with traditional hollow microspheres as reinforcing materials, the combination of millimeter-scale or even micron-scale, high-strength fiber pellets and micron-scale hollow microspheres The synergistic reinforcement of the resin system can effectively solve the shortcomings of the existing composite foam such as high density and low compressive strength

Method used

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  • Method for preparing high-strength solid buoyancy material

Examples

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Effect test

Embodiment 1

[0036] In this embodiment, millimeter-scale or even centimeter-scale fiber balls and micron-scale hollow microspheres are used to coordinately reinforce the resin matrix to prepare a low-density, high-strength solid buoyancy material. The specific steps are:

[0037] (1) The hollow glass microspheres are pretreated with a silane coupling agent (gamma-aminopropyltriethoxysilane coupling agent), and the optimal amount of the coupling agent is 0.2wt% of the mass of the glass microspheres;

[0038] (2) According to the mass fraction ratio, 100 parts of epoxy resin (diglycidyl ether epoxy resin, polyglycidyl ether epoxy resin or glycidyl amine epoxy resin can be used, and diglycidyl alcohol is used in this embodiment) Ether epoxy resin), 50 parts of triethylenetetramine, 10 parts of nitrile rubber toughening agent, 5 parts of dispersant, 10 parts of thinner (n-butyl glycidyl ether) are mixed, and mechanically Stirring, the stirring time is 20min; the stirring speed is 100r / min;

...

Embodiment 2

[0044] The difference between this embodiment and Example 1 is that the hollow microspheres used in the prepared high-strength solid buoyancy material are hollow ceramic microspheres with an apparent density of 0.35 g / cm 3 , the compressive strength is 80MPa, and other steps and parameters are the same as in Example 1. The measured density of the obtained material is 0.67g / cm 3 , the hydrostatic pressure resistance of all-round test is 120MPa, and the water permeability rate is 0.39% per day, which fully meets the performance indicators of buoyancy materials in my country under the condition of 12000 water depth.

Embodiment 3

[0046] The difference between this example and Example 1 is that the amount of fiber pellets used in the prepared high-strength solid buoyancy material is 15 parts, and other steps and parameters are the same as in Example 1. The measured density of the obtained material is 0.53g / cm 3 The hydrostatic pressure resistance of all-round test is 83MPa, and the water seepage rate is 0.40% per day, which fully meets the performance indicators of buoyancy materials in my country at a water depth of 7000 meters.

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Abstract

The invention discloses a method for preparing a high-strength solid buoyancy material. The method comprises the steps as follows: a coupling agent in a mass ratio of (0.2:100) with hollow microspheres is adopted to perform pretreatment on 1-20 parts of hollow microspheres; 100 parts of resin, 0-60 parts of a curing agent, 0-15 parts of a toughening agent, 0-5 parts of a dispersing agent and 0-10 parts of a diluent are stirred and mixed to obtain a resin system material, the pretreated hollow microspheres and 1-30 parts of small fiber balls are gradually added into the resin system material step by step, the mixture is slow stirred and uniformly mixed, and original slurry is obtained; and the original slurry enters an injection molding process and is subjected to demolding so as to obtain the high-strength solid buoyancy material. Compared with a traditional solid buoyancy material, the high-strength solid buoyancy material has higher compressive strength, lower density and water permeability and good processability simultaneously.

Description

technical field [0001] The invention relates to a method for preparing a high-strength solid buoyancy material, in particular to a method for preparing a solid buoyancy material used in equipment counterweights, water surface buoys, and buoyancy platforms required for deep-sea exploration, etc. method. Background technique [0002] Since the beginning of the 21st century, countries around the world have carried out large-scale exploration and exploitation of mineral resources such as oil and gas products in the marine field to meet the growing energy demand. In this process, solid buoyancy material, as a high-performance composite material with low density, high strength, low water permeability and high buoyancy, is an indispensable basic material for modern offshore oil, natural gas and deep diving technology. It can provide The platform device on the water surface provides buoyancy, insulation and buoyancy for underwater pipelines, and necessary buoyancy for deep diving e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L61/06C08K9/06C08K7/28C08K7/24C08K7/22C08K9/10C08K7/16
Inventor 郭金海郝旭峰沈峰居建国诸静叶周军
Owner SHANGHAI COMPOSITES SCI & TECH CO LTD
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