Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparation and formula of high-strength, high-toughness and low-density wood fiber calcium silicate board

A high-strength, high-toughness, calcium silicate board technology, which is applied in the field of building materials, can solve the problems of board strength decline, low density, high strength, high toughness, and high cost, and achieve improved impact strength, improved bonding ability, and reduced water absorption. Effect

Pending Publication Date: 2020-12-25
GUANGDONG SOBEN GREEN NEW MATERIAL CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current low-density calcium silicate board has low strength. The dry flexural strength is generally around 8, and some are even 6.7Mpa. The cost is high. In order to reduce the density of ordinary low-density calcium silicate board, it is necessary to add light filler or Lightweight active materials, such as perlite, mica, diatomaceous earth, etc., are relatively expensive. The addition of light fillers such as perlite reduces the density, but at the same time the strength of the board also drops sharply, and the cost of the board is also greatly reduced. Increase
Although wood fiber is used to produce calcium silicate boards, the amount of addition is still small, and no low-density, high-strength and high-toughness boards have been produced.

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
  • Preparation and formula of high-strength, high-toughness and low-density wood fiber calcium silicate board

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] Preparation method of high-strength, high-toughness and low-density wood fiber calcium silicate board:

[0028] Step 1): Add 5000-9000L of lime water with a concentration of 0.1-0.3% in the dissolution tank, feed the steam discharged during the depressurization of the autoclave, and add wood fiber into the dissolution tank with a solid content of 8%-15%. Stir for 1-2 hours and let it stand, release the upper layer of oil and part of the dissolved water, continue to feed the recovered steam, and pass through 3-4 cycles of stirring and feeding the recovered steam to obtain wood fibers that are initially decolorized and organic matter removed, and the concentration is 5- 10% wood fiber;

[0029] Step 2): The wood fiber after step 1) is passed through the first delivery pump to the storage tank to keep stirring and standby;

[0030] Step 3): Pass the part of the wood fiber treated in step 2) through a carding machine for carding treatment, and pass through the pulp of 23-3...

Embodiment 1

[0049]The calcium silicate board is made of the following raw materials by weight ratio, 0.77% wood fiber, 0.009% wood fiber activator calculated according to the quality of wood fiber, 0.8% pulp, 2.9% cement, 5.8% quartz powder, 1% lime, 0.08% wollastonite, 1% silica fume, 0.16% mineral fiber and 87.4% water.

Embodiment 2

[0051] The calcium silicate board is made of the following raw materials in weight ratio, 0.9% wood fiber, 0.01% wood fiber activator calculated according to the quality of wood fiber, 0.8% pulp, 2.6% cement, 5.3% quartz powder, 1% lime, 0.08% wollastonite, 1% silica fume, 0.1% mineral fiber and 88.2% water.

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
Lengthaaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses preparation and a formula of a high-strength, high-toughness and low-density wood fiber calcium silicate board. The board is low in density and high in breaking strength, especially the impact strength is greatly improved, and compared with a low-density calcium silicate board on the market at present, the breaking strength is generally about 8 Mpa, even 6 Mpa and 7 Mpa, the impact strength is lower, and no requirement is made. More than 50% of paper pulp is replaced by the wood fibers, perlite, diatomite and the like are not used, the cost is greatly reduced, steam isrecycled, perlite calcined at high energy consumption is not used, and energy conservation and emission reduction are achieved; the water absorption rate of the board is greatly reduced, and lithium silicate and potassium silicate are generated on the fiber surface in the board, so that the bonding capacity is improved, and the waterproof effect is achieved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to the preparation and formulation of high-strength, high-toughness and low-density wood fiber calcium silicate boards. Background technique [0002] The current low-density calcium silicate board has low strength. The dry flexural strength is generally around 8, and some are even 6.7Mpa. The cost is high. In order to reduce the density of ordinary low-density calcium silicate board, it is necessary to add light filler or Lightweight active materials, such as perlite, mica, diatomaceous earth, etc., are relatively expensive. The addition of light fillers such as perlite reduces the density, but at the same time the strength of the board also drops sharply, and the cost of the board is also greatly reduced. Increase. Although wood fiber is used to produce calcium silicate boards, the amount of addition is still small, and low-density, high-strength and high-toughness boards have no...

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
IPC IPC(8): C04B28/12C04B18/26
CPCC04B18/26C04B28/12C04B2201/20C04B2201/50C04B22/068C04B22/00C04B18/241C04B7/00C04B14/06C04B14/043C04B18/146C04B14/42C04B14/46C04B14/4656Y02W30/91
Inventor 黄卫斌陈铁石刘正甫
Owner GUANGDONG SOBEN GREEN NEW MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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