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Temperature-resistant mineral fiber paper heat-insulating and insulating material and preparation method thereof

A technology of mineral fiber and insulating material, applied in fiber raw material processing, natural cellulose pulp/paper, physical processing paper, etc., can solve problems such as difficulty in meeting the strength requirements of papermaking, inability to achieve, and difficulty in hydrogen bonding, etc. To achieve the effect of satisfying temperature resistance, increasing temperature resistance and improving papermaking performance

Pending Publication Date: 2021-03-02
浙江鹏辰造纸研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional insulating materials are made of organic materials, which cannot meet the above requirements
However, the difficulty of papermaking with 100% mineral fiber lies in that it is difficult for mineral fiber to form hydrogen bonds to increase strength like plant fibers during the wet papermaking process, so it is difficult to meet the requirements of papermaking and the strength requirements for subsequent use. ; At the same time, due to the requirement of temperature resistance during use, organic adhesives cannot be used to increase strength, so inorganic adhesives must be used to increase strength

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
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Take 85 parts of aluminum silicate fiber mineral fiber and put it into a beater, add an appropriate amount of water until the fiber pulp is 3% thick, and disperse and beat the mineral fiber to disperse the mineral fiber evenly in the water to form a mineral fiber slurry;

[0024] 2) Take 15 parts of coniferous wood pulp fibers in a beater, add an appropriate amount of water until the fiber pulp is 3% thick, first disperse for 20-30 minutes, and then beat with a knife until the degree of percussion is 20-30 °SR to form a plant fiber pulp ;

[0025] 3) Put all the above two kinds of slurry into the slurry mixing tank, add polyacrylamide dispersant with 0.1% dry weight of fiber, stir evenly, add silica sol with 10% dry weight of the above fiber, stir well and add water to dilute When the total concentration of the slurry is 0.3%, a mixed slurry is formed;

[0026] 4) Send the above-mentioned mixed slurry to the rotary screen former for dehydration and forming, and then...

Embodiment 2

[0029] 1) Take 88 parts of aluminum silicate fiber mineral fiber and put it into a beater, add an appropriate amount of water until the fiber pulp is 3% thick, and disperse and beat, so that the aluminum silicate fiber is evenly dispersed in water to form a mineral fiber slurry;

[0030] 2) Take 12 parts of Manila hemp pulp fiber in a beater, add an appropriate amount of water until the fiber pulp is 3% thick, first disperse it for 20-30 minutes, and then beat it with a knife until the degree of percussion is 20-30 °SR to form a plant fiber pulp ;

[0031] 3) Put all the above slurry into the slurry mixing tank, add polyethylene oxide dispersant of 0.3% of the total fiber weight, stir evenly, add aluminum sol of 1% dry weight of the above fiber, stir evenly and dilute to the slurry The total concentration was 0.3%, forming a mixed slurry.

[0032] 4) Send the above-mentioned mixed slurry to the rotary screen former for dehydration and forming, and then press, dry and coil to ...

Embodiment 3

[0035] 1) Take 95 parts of asbestos fiber mineral fiber and put it into a beater, add an appropriate amount of water until the fiber pulp is 3% thick, and disperse and beat, so that the asbestos fiber is evenly dispersed in water to form a mineral fiber slurry;

[0036] 2) Take 5 parts of cotton pulp fiber in the beater, add appropriate amount of water to make the fiber pulp thicker to 3%, first disperse it for 20-30 minutes, and then beat it with a knife until the degree of percussion is 20-30 °SR to form a plant fiber slurry;

[0037] 3) Put all the above slurry into the slurry mixing tank, add polyacrylamide dispersant with 0.2% dry weight of fiber, stir evenly, add aluminum chloride glue with 5% dry weight of the above fiber, stir evenly and dilute Until the total concentration of slurry is 0.3%, a mixed slurry is formed.

[0038] 4) Send the above-mentioned mixed slurry to the rotary screen former for dehydration and forming, and then press, dry and coil to make the weigh...

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Abstract

The invention discloses a temperature-resistant mineral fiber paper heat-insulating and insulating material and a preparation method thereof, which belong to the technical field of preparation of fiber-containing paper. The temperature-resistant mineral fiber paper heat-insulating and insulating material is prepared from mineral fibers and plant fibers in parts by weight as slurry. The pulp is prepared from 85-100 parts of mineral fibers, 0-15 parts of plant fibers and an inorganic adhesive accounting for 1%-10% of the absolute dry total amount of the mineral fibers and the plant fibers through a wet papermaking process, and after drying is completed, the obtained paper is placed in a high-temperature furnace to be subjected to heat treatment. And oxidizing to remove organic components toobtain the temperature-resistant mineral fiber paper heat-insulating and insulating material is conducted. The mineral fiber paper heat-insulating and insulating material is prepared by adopting a limited method, so that the papermaking performance and the temperature resistance of the mineral fiber paper heat-insulating and insulating material are improved, and the use requirements of temperatureresistance, heat insulation and insulation of a special power supply material are better met.

Description

technical field [0001] The invention belongs to the technical field of special power supply materials, and in particular relates to a heat-resistant mineral fiber paper thermal insulation material and a preparation method thereof. Background technique [0002] The special power supply requires that the wrapped paper material has a high temperature resistance of 500-600°C, and at the same time requires that the thermal conductivity is lower than 0.040W / m.K and the insulation resistance is not lower than 500MΩ. Conventional insulating materials are made of organic materials, which cannot meet the above requirements. However, the difficulty of papermaking with 100% mineral fiber lies in that it is difficult for mineral fiber to form hydrogen bonds to increase strength like plant fibers during the wet papermaking process, so it is difficult to meet the requirements of papermaking and the strength requirements for subsequent use. ; At the same time, due to the requirement of tem...

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
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/00D21H11/12D21H13/38D21H17/37D21H17/53D21H17/66D21H17/68D21H21/08D21H21/14D21H21/18D21H25/04D21F11/00
CPCD21H11/00D21H11/12D21H13/38D21H17/37D21H17/53D21H21/08D21H21/14D21H21/18D21H17/68D21H17/66D21F11/00D21H25/04
Inventor 李荣年王虹李红祝
Owner 浙江鹏辰造纸研究所有限公司
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