Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of lightweight high-strength foam glass

A foam glass and high-strength technology, which is applied in the field of preparation of lightweight and high-strength foam glass, can solve problems such as poor mechanical properties of foam glass, and achieve the effects of excellent bending strength, uniform distribution and easy operation.

Active Publication Date: 2017-10-20
XI AN JIAOTONG UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of poor mechanical properties of the existing foam glass, and to provide a preparation method of lightweight high-strength foam glass

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of lightweight high-strength foam glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 20g of Pyrex7740 glass powder, put it into a graphite crucible coated with boron nitride powder, place the graphite crucible in a hot isostatic pressing furnace, fill it with argon to 100MPa, and raise it from room temperature to 1100°C at 400°C / h , and keep it warm for 3h, lower the temperature to 800°C at a rate of 600°C / h, reduce the gas pressure to 10MPa at the same time, keep it warm for 20min, and cool it to room temperature at 600°C / h to obtain a Pyrex foam glass material with a porosity of 52%. The compressive strength is 122MPa.

Embodiment 2

[0020] Weigh 20g of Pyrex7250 glass powder, put it into a graphite crucible coated with boron nitride powder, place the graphite crucible in a hot isostatic pressing furnace, fill it with argon to 100MPa, and raise it from room temperature to 1200°C at 200°C / h , and keep it warm for 1.5h, lower the temperature to 850°C at a rate of 400°C / h, reduce the gas pressure to 20MPa at the same time, keep it warm for 15min, and cool to room temperature at 500°C / h to obtain a Pyrex foam glass material with a porosity of 35%. The compressive strength of the material is 280MPa.

Embodiment 3

[0022] Weigh 20g of Pyrex7760 glass powder, put it into a graphite crucible coated with boron nitride powder, place the graphite crucible in a hot isostatic pressing furnace, fill it with argon to 200MPa, and raise it from room temperature to 1300°C at 300°C / h , and keep it warm for 2h, lower the temperature to 850°C at a rate of 500°C / h, reduce the gas pressure to 30MPa at the same time, keep it warm for 5min, and cool it to room temperature at 700°C / h to obtain a Pyrex foam glass material with a porosity of 45%. The compressive strength is 310MPa.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
compressive strengthaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing light-weight high-strength foam glass, which comprises the following steps: placing Pyrex glass powder in a hot isostatic pressing furnace and feeding inert gas, and performing two-step sintering in a high-pressure inert gas environment: first Keep warm at 100-200MPa and 1100-1300°C for 1-3 hours, then reduce the pressure of inert gas and sintering temperature to 10-40MPa and 800-900°C respectively, keep warm for 5-20 minutes, and then quickly cool to room temperature to obtain closed pores. Lightweight, high-strength cellular glass with high-pressure gas. The foam glass prepared by the invention has elliptical closed pores, the porosity and pore size are controllable, and the closed pores contain inert gas with relatively high pressure. The high-pressure gas in the closed pores can improve the compressive strength of the foam glass, which has light weight, high specific stiffness and excellent thermal insulation performance. It also has excellent material design and can be widely used in the fields of building load-bearing, explosion-proof, and earthquake-proof. .

Description

Technical field: [0001] The invention relates to a preparation method of light-weight and high-strength foam glass, which can be widely used in the fields of building bearing, explosion-proof, shock-proof and the like. Background technique: [0002] Foam glass is a kind of vitreous material with small volume density and full of small pores in the closed pores. It has the functions of water absorption and heat insulation, heat insulation and sound insulation. It has broad application prospects in the fields of roof insulation and sewage treatment. [0003] At present, the method of adding pore-forming agent to foam is generally used in the preparation of foam glass at home and abroad. However, due to the characteristics of the pore-forming agent itself and the action of decomposition products, it is easy to form large-sized pores and connected structures, and the size of the pore structure is different. Therefore, the foam glass prepared by the traditional method of foaming ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C03B19/06
Inventor 王波杨建锋张亚明张辉张海鸿史忠旗
Owner XI AN JIAOTONG UNIV