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A kind of inorganic fire-resistant paper and its preparation method and application

An inorganic fire-resistant and fire-resistant technology, applied in the direction of special paper, inorganic fiber/sheet, papermaking, etc., can solve the problems of low physical strength and limited application of fire-resistant paper, and achieve good application prospects

Active Publication Date: 2018-09-28
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the physical strength of fire-resistant paper prepared with a single component of hydroxyapatite ultra-long nanowires is low, which limits its application.

Method used

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  • A kind of inorganic fire-resistant paper and its preparation method and application
  • A kind of inorganic fire-resistant paper and its preparation method and application
  • A kind of inorganic fire-resistant paper and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A glass fiber with a length of 3 mm and a diameter of 4 μm is configured into a water suspension with a concentration of 0.5 wt.%, ultrasonically treated for 3 minutes, and then the network structure hydroxyapatite ultralong nanowires with a concentration of 0.5 wt.% are suspended in water The liquid is mixed with the glass fiber water suspension according to the proportion of 50wt.% hydroxyapatite ultra-long nanowires, and the sodium polyphosphate inorganic adhesive is added to the water suspension according to the proportion of 20wt.%, and the slurry is obtained after stirring slowly for 1 min , the slurry was filtered and formed on a Kaiser rapid paper former, and the formed paper was pressed (pressure 4MPa, time 8min) and dried (temperature 95°C, time 3min) to prepare fire-resistant paper. The fire-resistant paper has a thickness of 140 μm and a tensile strength of 5 MPa.

Embodiment 2

[0033] A glass fiber with a length of 6 mm and a diameter of 6 μm is configured into a water suspension with a concentration of 0.3 wt.%, ultrasonically treated for 3 minutes, and then the network structure hydroxyapatite ultralong nanowires with a concentration of 0.3 wt.% are suspended in water The liquid is mixed with the aluminum silicate fiber aqueous suspension according to the ratio of 60wt.% hydroxyapatite ultra-long nanowires, and the aluminum sulfate inorganic adhesive is added to the aqueous suspension according to the ratio of 20wt.%, and the slurry is obtained after stirring slowly for 1 min , the slurry was filtered and formed on a Kaiser rapid paper former, and the formed paper was pressed (pressure 1 MPa, time 10 min) and dried (temperature 65°C, time 10 min) to prepare fire-resistant paper. The fire-resistant paper has a thickness of 234 μm and a tensile strength of 8 MPa.

Embodiment 3

[0035] A glass fiber with a length of 3 mm and a diameter of 4 μm is configured into a water suspension with a concentration of 0.5 wt.%, ultrasonically treated for 3 minutes, and then the network structure hydroxyapatite ultralong nanowires with a concentration of 0.3 wt.% are suspended in water The liquid is mixed with the glass fiber water suspension according to the proportion of 70wt.% hydroxyapatite ultra-long nanowires, and boric acid and sodium silicate composite inorganic adhesive are added to the water suspension according to the proportion of 10wt.%, and stirred slowly for 1 minute to obtain Slurry, the slurry is filtered and formed on a Kaiser rapid paper former, and the formed paper is pressed (pressure 4MPa, time 8min) and dried (temperature 95°C, time 5min) to prepare fire-resistant paper . The fire-resistant paper has a thickness of 155 μm and a tensile strength of 6 MPa.

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Abstract

The invention relates to inorganic fire-resistant paper as well as a preparation method and application thereof. The inorganic fire-resistant paper comprises hydroxyapatite super-long nano wires and inorganic fiber. The hydroxyapatite super-long nano wires can be wrapped by the inorganic fiber by using a unique process, then slurry which is good in dispersibility can be prepared, and novel inorganic fire-resistant paper of a 'reinforced framework' structure of the inorganic fiber can be formed after the slurry is drained and molded. Compared with hydroxyapatite super-long nano wire fire-resistant paper of a single component, the inorganic fire-resistant paper provided by the invention is greatly improved in physical strength (tensile strength, breaking strength, folding strength and tearing strength), surface property (glossiness and smoothness), and the like, and the problem that the hydroxyapatite super-long nano wire fire-resistant paper of the single component is poor in physical strength can be effectively solved.

Description

technical field [0001] The invention belongs to the field of novel inorganic fire-resistant paper, and in particular relates to an inorganic fire-resistant paper prepared by using hydroxyapatite ultra-long nanowires and inorganic fibers as raw materials. Background technique [0002] Paper is one of the four great inventions in ancient China. The invention of paper has greatly promoted the spread and development of human culture and technology. Today, paper has become a multi-purpose product that human beings cannot do without in their daily work and life. Traditional paper is usually made of plant fibers such as trees or grasses and some additives and fillers are added. The pulping and papermaking process causes serious pollution to the environment; one of the Achilles' heels of traditional plant cellulose paper is its flammability. Books And paper documents will be completely burned in a fire, which is one of the main reasons why many paper cultural relics have been destr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H15/02D21H15/10D21H13/36D21H27/00C03C25/42
CPCC03C25/42C04B41/4584C04B41/85D21H13/36D21H15/02D21H15/10D21H27/00C04B41/5048
Inventor 朱英杰董丽颖吴进路丙强
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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