A kind of microbead composite solid buoyancy material and preparation method thereof

A solid buoyancy and microbead technology, applied in the field of composite materials, can solve the problems of increasing the overall hollow microbead addition, reducing the density, low density and water absorption of buoyancy materials, achieving good corrosion resistance and processability, and improving The effect of material density and low water absorption

Active Publication Date: 2021-03-30
天津中材工程研究中心有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the injection process, the mold needs to reserve enough space (more than 1 / 3 of the space) for the expansion of the volume of the buoyant material after the foamed microspheres heat up and expand. The main purpose is to use the expanded microspheres to expand from small particles when heated. The characteristics of forming hollow microbeads, increasing the amount of overall hollow microbeads, and reducing the density of buoyant materials; although the obtained material has a lower density and water absorption (0.30-0.52g / cm3 respectively) 3 and ≤0.3%), but at the same time it will reduce the density of the material and have a negative impact on the compressive strength of the material, making the compressive strength relatively low (7-10MPa)

Method used

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  • A kind of microbead composite solid buoyancy material and preparation method thereof
  • A kind of microbead composite solid buoyancy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] First, add 20 parts of diluent and 2 parts of silane coupling agent into the blender, stir evenly, pour into the vacuum kneader, and set aside; secondly, add 60 parts of hollow glass microspheres into the vacuum kneader in batches, at 80°C Kneading at a constant speed for 30min under normal pressure conditions to obtain material A 1 ; Then pour 100 parts of epoxy resin into the vacuum mixer, and after stirring at a constant speed at 50 °C for 20 minutes, pour 15 parts of composite curing agent and 2 parts of curing accelerator into the vacuum mixer in turn, Stir at a constant speed for 10 minutes under the state (-0.09MPa) to obtain material B 1 ; then material B 1 Pour into the vacuum kneader, and the material A 1 Knead at a constant speed for 30min under a vacuum state (-0.09MPa) at 80°C to obtain material C 1 ;Finally open the vacuum kneader to take out material C 1 , put it into a mold preheated to 80°C for compaction, then place it on a flat vulcanizer, cure it...

Embodiment 2

[0043] First, add 20 parts of diluent and 2 parts of silane coupling agent into the mixer, stir evenly, pour into a vacuum kneader, and set aside; secondly, mix 60 parts of hollow glass microspheres and 0.8 parts of foamed microspheres, and divide Add batches into a vacuum kneader, and knead at a constant speed for 30 minutes under normal pressure at 80°C to obtain material A 2 ; Then pour 100 parts of epoxy resin into the vacuum mixer, and after stirring at a constant speed at 50 °C for 20 minutes, pour 15 parts of composite curing agent and 2 parts of curing accelerator into the vacuum mixer in turn, Stir at a constant speed for 10 minutes under the state (-0.09MPa) to obtain material B 2 ; then material B 2 Pour into the vacuum kneader, and the material A 2 Knead at a constant speed for 30min under a vacuum state (-0.09MPa) at 80°C to obtain material C 2 ;Finally open the vacuum kneader to take out material C 2 , put it into a mold preheated to 80°C for compaction, then...

Embodiment 3

[0045] First, add 10 parts of diluent and 1.3 parts of silane coupling agent into the mixer, stir evenly, pour into the vacuum kneader, and set aside; secondly, mix 40 parts of hollow glass microspheres and 2 parts of foamed microspheres, and divide Add batches into a vacuum kneader, and knead at a constant speed for 30 minutes under normal pressure at 80°C to obtain material A 3 ; Then pour 100 parts of epoxy resin into the vacuum mixer, and after stirring at a constant speed at 50 °C for 20 minutes, pour 15 parts of composite curing agent and 2 parts of curing accelerator into the vacuum mixer in turn, Stir at a constant speed for 10 minutes under the state (-0.09MPa) to obtain material B 3 ; then material B 3 Pour into the vacuum kneader, and the material A 3 Knead at a constant speed for 30min under a vacuum state (-0.09MPa) at 80°C to obtain material C 3 ;Finally open the vacuum kneader to take out material C 3 , put it into a mold preheated to 80°C for compaction, th...

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Abstract

The invention relates to a micro-bead compounded solid buoyancy material and a preparation method thereof, and belongs to the technical field of composite materials. The material includes, by mass, 100 parts of epoxy resin, 10-30 parts of a diluent, 10-20 parts of a composite curing agent, 0-2 parts of a curing accelerator, 0.5-2 parts of a silane coupling agent, 40-60 parts of hollow glass beads,and 0-2 parts of foamed microspheres. The preparation method includes performing surface treatment on the hollow glass beads, and performing vacuum defoaming treatment of an epoxy resin matrix; mixing the epoxy resin matrix and compound beads to perform the vacuum defoaming treatment; and performing curing under a specific temperature and pressure by adopting a compression molding technology, andperforming demolding so that the solid buoyancy material can be obtained. The material can be obtained by reasonably compound a lightweight filling material and adopting the compression molding technology, and the density of the obtained material is 0.37-0.40 g / cm<3>, the compressive strength is greater than or equal to 14 MPa, and the water absorption rate is less than or equal to 0.3%, and therefore, application needs in the field of deep seas can be met.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a solid buoyancy material compounded with microbeads and a preparation method thereof. Background technique [0002] In recent years, as my country's ocean development continues to expand in depth and breadth, the demand for various marine engineering materials has increased significantly. Among them, light and high-strength solid buoyancy materials are an important part of modern deep diving, underwater exploration and marine engineering technology. . Since solid buoyant materials need to work in the harsh environment of high pressure, high corrosion and unpredictable changes in the ocean for a long time, there are strict requirements on their performance indicators such as buoyancy coefficient, compressive strength, water absorption and machinability. Among them, the buoyancy coefficient is inversely proportional to the density of the solid buoyancy material itself,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K9/06C08K7/28C08J9/32
CPCC08J9/32C08J2363/00C08K7/28C08K9/06C08K2201/003
Inventor 张帆单丹尤健孙建潘新庆胡芝娟董正洪
Owner 天津中材工程研究中心有限公司
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