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

A technology of inorganic flame-resistant paper and inorganic filler, which is used in spinning solution preparation, textile and papermaking, fiber processing, etc., can solve problems such as low technical preparation efficiency, and achieve environmental pressure relief, good mechanical properties, and good chemical stability. Effect

Active Publication Date: 2017-04-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the flame-resistant paper prepared by this technology has good high temperature resistance, good flexibility and mechanical strength, the production efficiency of the technology itself is low, and there is still a long way to go before realizing industrial production.

Method used

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

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Embodiment 1

[0032] In this example, SiO 2 Nanofibers prepared by sol electrospinning as the main material of inorganic flame-resistant paper, TiO 2 As a paper filler, the present invention is further illustrated by examples, but the scope of protection of this patent should not be limited by this. All other inorganic glass precursor sols that can be used for spinning and can be treated by subsequent soaking-drying-compacting-heat treatment Silicate electrospun fiber nonwoven membranes for filling materials such as SiO 2 , CaO, Al 2 o 3 , ZrO 2 etc. and their mixtures are suitable for the inorganic flame-resistant paper disclosed in the present invention.

[0033] The preparation process of the inorganic flame-resistant paper of the present embodiment is as follows:

[0034] Step 1. With ethyl orthosilicate (TEOS), absolute ethanol (EtOH), water (H 2 O), acids (including hydrochloric acid (HCl), nitric acid (HNO 3 ), sulfuric acid (H 2 SO 4 ), acetic acid) as raw materials, and sy...

Embodiment 2-25

[0048] The silicate electrospun nanofiber that the present invention relates to, its composition is SiO 2 As the main body, Al can also be added 2 o 3 , ZrO 2 and other components to improve the mechanical and thermal properties of the fiber. Illustrate below through embodiment 2-25. The main feature of embodiment 2-25 is to adjust the molar ratio of each added raw material in the spinning sol, as shown in table 2:

[0049] The mass ratio of each raw material in the spinning sol of the embodiment 2-25 of table 2

[0050]

[0051]

[0052] The operation steps are as follows:

[0053] Step 1. Use tetraethyl orthosilicate (TEOS), aluminum nitrate pentahydrate (Al(NO 3 ) 3 ·5H 2 O), zirconium nitrate pentahydrate (Zr(NO 3 ) 2 ·5H 2 O), ethanol (EtOH), water (H 2 O), hydrochloric acid (HCl), as raw materials, synthesize spinnable sol by sol-gel technology. The above raw materials were uniformly mixed according to the proportion listed in Table 1, and then a spinn...

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Abstract

The invention discloses a preparation method of inorganic fire retardant paper. The method comprises the following steps that 1, a silicate glass precursor spinning colloidal sol is synthetized through the sol-gel technology; 2, the silicate glass precursor spinning colloidal sol synthetized in the first step serves as a spinning solution, and a silicate glass nano-fiber non-woven film is prepared through the electrospinning technology; 3, the silicate glass nano-fiber non-woven film obtained in the second step is soaked in an inorganic filler solution, taken out, drained off and dried in air at the room temperature, and then the silicate glass nano-fiber non-woven film is rolled and compacted through a roller mill and transferred into a drying oven to be baked to obtain the inorganic fire retardant paper. According to the preparation method, raw materials are common and cheap, the manufacturing process is simple, efficient, safe, environmentally friendly and capable of saving energy and easily achieving large-scale production, and the obtained inorganic fire retardant paper has the better mechanical performance and the better chemical stability compared with common paper materials.

Description

technical field [0001] The invention relates to the field of flame-resistant paper and its preparation, in particular to an inorganic flame-resistant paper and its preparation method and application. Background technique [0002] Paper plays a very important role in our daily life. Paper can be used for writing, drawing, printing, and plays the role of recording and transmitting information; paper is used by most countries in the world to make banknotes and carry the task of currency circulation; in addition, paper materials are also widely used in packaging , interior decoration and environmental protection and other fields, some special papers also have some other special uses due to their unique thermal, mechanical, electrical, magnetic and other properties. The main component of traditional paper materials is organic cellulose, so it is prone to yellowing and is easy to burn when exposed to fire. Therefore, it is difficult to preserve many precious documents and materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/79D06M11/45D06M11/44D06M11/46D04H1/728D04H1/4218D01D1/02D01D5/00
Inventor 马志军邱建荣李杨彭明营周时凤董国平
Owner SOUTH CHINA UNIV OF TECH
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