Primary glass fiber filter paper and preparation method thereof

A glass fiber and alkali-free glass fiber technology is applied in the field of primary glass fiber filter paper and its preparation, which can solve the problems that the filter paper cannot adapt to the high temperature working environment, the chemical fiber has poor flame retardant performance, and the product structure is loose, so as to achieve accelerated dehydration speed, The effect of reducing energy consumption and improving production efficiency

Active Publication Date: 2017-07-21
CHONGQING ZAISHENG TECH CORP
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the pre-filter paper produced in China is generally made of chemical fiber, but due to the very poor flame retardancy of chemical fiber, the filter paper prepared from it cannot adapt to the high temperature working

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] Preparation of a primary glass fiber filter paper

[0025] (1) Raw material preparation: Weigh 5wt% of the non-alkali glass fiber with a diameter of 0.46 and 95wt% of the medium-alkali chopped glass fiber with a diameter of 12μm according to the component content of the primary glass fiber filter paper;

[0026] (2) Dispersion pulping: Add the raw materials prepared in step (1) to a disperser containing sulfuric acid aqueous solution for 5 minutes to be beaten and dispersed to obtain a slurry with a beating degree of 1.5. Adjust the pH of the slurry by adjusting the amount of sulfuric acid and water The value is 3.0, and the mass concentration is 2.0%;

[0027] (3) Wet molding: transfer the slurry obtained in step (2) to the storage tank to dilute to a mass concentration of 0.2%, and adjust the pH value to 3.0 by adjusting the amount of sulfuric acid and water, and then the slurry in the storage tank The material is conveyed to the inclined wire forming pape...

Example Embodiment

[0031] Example 2

[0032] Preparation of a primary glass fiber filter paper

[0033] (1) Preparation of raw materials: Weigh 10wt% of non-alkali glass fibers with a diameter of 0.55 and 90wt% of medium-alkali chopped glass fibers with a diameter of 8μm according to the component content in the primary glass fiber filter paper;

[0034] (2) Dispersion and pulping: Add the raw materials prepared in step (1) to a disperser containing sulfuric acid aqueous solution for 5 minutes to be beaten and dispersed to obtain a slurry with a beating degree of 3.4. Adjust the pH of the slurry by adjusting the amount of sulfuric acid and water The value is 3.5 and the mass concentration is 1.0%;

[0035] (3) Wet molding: transfer the slurry obtained in step (2) to the storage tank to be diluted to a mass concentration of 0.1%, and adjust the pH value to 3.5 by adjusting the amount of sulfuric acid and water, and then the slurry in the storage tank The material is conveyed to the inclined wire forming...

Example Embodiment

[0039] Example 3

[0040] Preparation of a primary glass fiber filter paper

[0041] (1) Preparation of raw materials: weigh 15wt% of non-alkali glass fibers with a diameter of 0.39 and 85wt% of medium-alkali chopped glass fibers with a diameter of 10μm according to the component content of the primary glass fiber filter paper;

[0042] (2) Dispersion and pulping: Add the raw materials prepared in step (1) to a disperser containing sulfuric acid aqueous solution for 6 minutes to be beaten and dispersed to obtain a slurry with a beating degree of 5.1. Adjust the pH of the slurry by adjusting the amount of sulfuric acid and water The value is 2.5, and the mass concentration is 3.0%;

[0043] (3) Wet molding: transfer the slurry obtained in step (2) to the storage tank to be diluted to a mass concentration of 0.3%, and adjust the pH value to 2.5 by adjusting the amount of sulfuric acid and water, and then the slurry in the storage tank The material is conveyed to the inclined wire formi...

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
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a piece of primary glass fiber filter paper and a preparation method thereof, and belongs to the field of air filtration. The primary glass fiber filter paper comprises an alkali-free glass fiber with the diameter of 0.39-0.60 microns, a medium base chopped glass fiber with the diameter of 6-15 microns and an adhesive agent, and is prepared with a wet molding process; prepared primary glass fiber filter paper is thin, has the weight of 20-50g/m2, the resistance of less than and equal to 10Pa, the efficiency of more than and equal to 20%, and the strength of more than and equal to 1000N/M, resists high temperature, acid and alkali, and can be well adapted to high temperature working environment, thus having a wide range of application. A slanting mesh forming paper machine and a direct combustion method are adopted in the preparation process; as the slanting mesh forming can speed up the dehydration and improve the production efficiency, and the filter paper has the good uniformity, in the direct combustion method, hot air can be used in a recycling manner, and materials can be evenly heated and the energy consumption is reduced; therefore, technical difficulties and energy consumption reduction of a production line can be solved fundamentally.

Description

technical field [0001] The invention belongs to the field of air filtration, and in particular relates to a primary glass fiber filter paper and a preparation method thereof. Background technique [0002] With the continuous development of the filtration industry, there are more and more types of filter materials, and the requirements for filtration efficiency are also increasing, especially in medium-efficiency filters and flat-plate filters. Most of the existing filter products are chemical fiber and F series, but these materials still need to be further improved in terms of high temperature resistance and low resistance. At present, the pre-filter paper produced in China is generally made of chemical fiber, but due to the poor flame retardancy of chemical fiber, the filter paper prepared from it cannot adapt to the high temperature working environment. At the same time, similar foreign glass fiber filter paper adopts dry method Forming, this method has high production co...

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): D21H27/08D21H13/40
CPCD21H13/40D21H27/08
Inventor 罗杰
Owner CHONGQING ZAISHENG TECH CORP
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap