Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing nano-modified cement-based biomass materials by calcining straw ash at high temperature

A technology of nano-modification and material materials, which is applied in the field of building materials and can solve the problems of high preparation cost and poor resistance to sulfate erosion

Active Publication Date: 2021-05-25
UNIV OF JINAN
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the preparation cost of cement-based materials in the prior art is relatively high, and the performance of sulfate erosion resistance is relatively poor. In order to solve the above technical problems, the present invention provides a nano-modified A method for cement-based biomass materials, which adopts different temperatures and calcination times to prepare straw ash with different activities, and adjusts its dosage to obtain cement-based biomass materials with excellent mechanical properties and sulfuric acid erosion resistance

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
  • Method for preparing nano-modified cement-based biomass materials by calcining straw ash at high temperature
  • Method for preparing nano-modified cement-based biomass materials by calcining straw ash at high temperature
  • Method for preparing nano-modified cement-based biomass materials by calcining straw ash at high temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Plant stalks are crushed and dried to obtain plant powder, which is placed in a ceramic crucible and calcined once at 200°C for 1 hour in a muffle furnace to obtain a sintered powder; the sintered powder prepared above is placed in a ceramic crucible Carry out secondary calcination treatment at 600°C for 6 hours in a muffle furnace to obtain straw ash; in parts by weight, mix 5 parts of acrylic monomer, 0.12 parts of sodium dodecylbenzenesulfonate and 8 parts of deionized water Stir to prepare a monomer emulsion, then add 1 part of nano-silica powder, ultrasonically disperse for 30 minutes at room temperature with a power of 500W, then add 0.1 part of initiator, stir and react at 60°C for 1 hour, cool to room temperature after the reaction, and filter. Wash the solid with absolute ethanol and deionized water in sequence, and dry it at 80°C to obtain a polymer-coated silica material;

[0041] Dissolve 1ml of tetraethyl orthosilicate in 50ml of absolute ethanol, add 3ml o...

Embodiment 2

[0043] Plant stalks are ground and dried to obtain plant powder, which is placed in a ceramic crucible and calcined once at 400°C for 3 hours in a muffle furnace to obtain a sintered powder; the sintered powder prepared above is placed in a ceramic crucible Carry out secondary calcination treatment at 600°C in a muffle furnace for 6 hours to obtain straw ash; in parts by weight, mix 13 parts of acrylic monomer, 0.15 parts of sodium dodecylbenzenesulfonate and 11 parts of deionized water Stir to prepare a monomer emulsion, then add 4 parts of nano-silica powder, ultrasonically disperse at room temperature for 30 minutes at 500W power, then add 0.5 part of initiator, stir and react at 90°C for 2 hours, cool to room temperature after the reaction, filter, Wash the solid with absolute ethanol and deionized water in sequence, and dry it at 80°C to obtain a polymer-coated silica material;

[0044] Dissolve 1ml of tetraethyl orthosilicate in 50ml of absolute ethanol, add 3ml of deion...

Embodiment 3

[0046] Plant stalks are crushed and dried to obtain plant powder, which is placed in a ceramic crucible and calcined once at 200°C for 1.5 hours in a muffle furnace to obtain a sintered powder; the sintered powder prepared above is placed in a ceramic crucible Carry out secondary calcination treatment at 600°C in a muffle furnace for 6 hours to obtain straw ash; in parts by weight, 7 parts of acrylic monomer, 0.13 parts of sodium dodecylbenzenesulfonate and 9 parts of deionized water Mix and stir to prepare a monomer emulsion, then add 2 parts of nano-silica powder, ultrasonically disperse for 30 minutes at room temperature with a power of 500W, then add 0.2 parts of initiator, stir and react at 70°C for 70 minutes, cool to room temperature after the reaction, and filter , washing the solid with absolute ethanol and deionized water in sequence, and drying at 80°C to obtain a polymer-coated silica material;

[0047] Dissolve 1ml of tetraethyl orthosilicate in 50ml of absolute e...

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
densityaaaaaaaaaa
slumpaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing nano-modified cement-based biomass materials by calcining straw ash at high temperature, which comprises the following steps: firstly, calcining treatment with plant straw as raw material, and then placing the sintered powder in a muffle furnace for secondary Calcination treatment to obtain straw ash; using acrylic acid monomer as raw material, in-situ coating polymer on the surface of nano-silica powder, then preparing silica powder on the surface, and finally mixing cement, fly ash , straw ash, water reducer, and the composite structural material prepared above are mixed and ground to prepare cement-based biomass materials. The straw ash prepared by the invention contains more hydraulic active substances, which greatly improves the sulfate erosion resistance of the cement mortar to a certain extent.

Description

Technical field: [0001] The invention relates to the field of building materials, in particular to a method for preparing nano-modified cement-based biomass materials by calcining straw ash at high temperature. Background technique: [0002] As countries gradually enter the era of urbanization and industrialization, the cement industry has become one of the largest industries in the world. In 2015, cement production exceeded 4 billion tons for the first time. The annual output of China's cement is 2.4 billion tons, accounting for 57.3% of the world's total output, and it is the country that produces the most cement in the world. Relevant data show that greenhouse gas emissions from the cement industry account for 15% of the entire industry. my country's carbon emissions are second only to the United States, accounting for 22% of the world's total carbon emissions from the cement industry. Nowadays, as the harm of the greenhouse effect to the environment becomes more and m...

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): C04B28/00
CPCC04B28/00C04B18/08C04B18/101C04B2103/302C04B14/06C04B24/161
Inventor 李琴飞赵耀陈衡侯鹏坤谢宁程新
Owner UNIV OF JINAN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com