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

Basalt/aramid fiber/mica paper and production method thereof

A basalt, mica paper technology, applied in the direction of synthetic cellulose/non-cellulose material pulp/paper, plastic/resin/wax insulator, paper, etc., can solve the problem of reduced temperature resistance, poor temperature resistance, paper processing difficulties, etc. problems, to achieve the effect of improving quality, simple and convenient operation, and short production time

Pending Publication Date: 2021-11-16
通城县云水云母科技有限公司
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the method introduced in the above patent, although meta-aramid or para-aramid is used for modification, the mechanical properties and insulation properties of mica paper can be improved, but the long-term use temperature of meta-aramid is only 200°C, and its temperature resistance Poor performance, unable to make mica paper into high-end applications
The combination strength of para-aramid and mica is low, which can also improve the mechanical strength, but it will reduce the temperature resistance
Adding high thermal conductivity inorganic powder to mica paper can improve the thermal conductivity, but when the amount added is small, the thermal conductivity is very low. When the amount of thermal conductive filler reaches a certain level, the inorganic powder will increase the viscosity of the silicone resin , making paper processing difficult

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
  • Basalt/aramid fiber/mica paper and production method thereof
  • Basalt/aramid fiber/mica paper and production method thereof
  • Basalt/aramid fiber/mica paper and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 15,000 kg of basalt fibers with a diameter of 16 μm and a length of 0.5 mm, and 15,000 kg of aramid fibrids with a diameter of 40 μm and a length of 0.1 mm, and add them to 3,000,000 kg of water to stir and disperse to form a fiber suspension;

[0028] (2) Take muscovite scale 30000kg, join in the fiber suspension, obtain fiber / mica slurry;

[0029] (3) Use the rotary net mica paper machine to make paper, divide into five layers of rotary net pulp, dehydrate and dry to obtain basalt / aramid fiber / mica paper.

[0030] After testing, the air permeability of the mica paper prepared in this example is 1.9 μm / (Pa·s), the tensile stress is 1.5 MPa, and the thermal conductivity is 0.21 W / (m·k).

Embodiment 2

[0032] (1) Weigh 13,714 kg of basalt fibers with a diameter of 14 μm and a length of 0.7 mm, and 3,000 kg of aramid pulp fibers with a diameter of 30 μm and a length of 0.3 mm, and add them to 3,000,000 kg of water to stir and disperse to form a fiber suspension;

[0033] (2) Take by weighing phlogopite scale 39000kg, join in the fiber suspension, obtain fiber / mica pulp;

[0034] (3) Use a rotary net mica paper machine to make paper, divide into five round net sizings, dehydrate and dry to obtain basalt / aramid fiber / mica paper-based insulating materials.

[0035] After testing, the air permeability of the mica paper prepared in this embodiment is 16.875 μm / (Pa·s), the tensile stress is 0.441 MPa, and the thermal conductivity is 0.25 W / (m·k).

Embodiment 3

[0037] (1) Weigh 7500 kg of basalt fibers with a diameter of 12 μm and a length of 0.9 mm, and 7,500 kg of aramid fibrids with a diameter of 20 μm and a length of 0.6 mm, and add them to 3,000,000 kg of water to stir and disperse to form a fiber suspension;

[0038] (2) Weigh 45000kg of fluorophlogopite flakes and add them to the fiber suspension to obtain fiber / mica pulp;

[0039] (3) Use a rotary net mica paper machine for papermaking, divide into five layers of rotary net size, dehydrate and dry to obtain basalt / aramid fiber / mica paper-based insulating materials.

[0040] After testing, the air permeability of the mica paper prepared in this example is 1.7 μm / (Pa·s), the tensile stress is 1.5 MPa, and the thermal conductivity is 0.27 W / (m·k).

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
lengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses basalt / aramid fiber / mica paper and a production method thereof. Fibers and high-thermal-conductivity filler are introduced into a mica paper base material, the aramid fiber / basalt / mica paper is prepared through wet-process papermaking work, the fibers are a combination of basalt fiber and aramid fiber, and the high-thermal-conductivity filler is boron nitride fiber, flaky boron nitride, alumina fiber, alumina particles or a combination thereof. The basalt / aramid fiber / mica paper provided by the invention has relatively high strength, insulating property and thermal conductivity, the production method is simple, and the operability is excellent.

Description

technical field [0001] The invention relates to the technical field of insulating composite materials, in particular to a basalt / aramid fiber / mica paper and a production method thereof. Background technique [0002] As an inorganic silicate mineral, mica has a special structure that determines its excellent chemical stability, temperature resistance and insulation. It is an important inorganic high temperature resistant insulating material. However, along with the utilization of mica, high-quality large mica resources are scarce. In this case, mica paper made of crushed mica sheets on a paper machine appears. However, due to the weak van der Waals interaction between the mica microsheets, the pure mica paper is fragile and brittle, with a fracture strain of about 1% and a tensile strength of <1MPa, which requires the use of adhesives and reinforcing materials to make various products . At the same time, due to the low thermal conductivity of mica paper in the applicatio...

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 Applications(China)
IPC IPC(8): D21H27/12D21H13/44D21H13/26D21H13/38D21H17/67D21H13/36D21H21/10H01B3/52
CPCD21H13/44D21H13/26D21H13/38D21H17/67D21H17/675D21H13/36D21H21/10H01B3/52
Inventor 李新辉李俊冯清华王卫卫肖掌志
Owner 通城县云水云母科技有限公司
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