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A kind of modified mineral fiber cotton and preparation method thereof

A mineral fiber and mineral wool technology, applied in the field of mineral fiber cotton, can solve the problems of poor dispersion of mineral fiber, poor affinity of rubber and resin, poor waterproof and heat insulation effects, etc., and achieve good fireproof and heat preservation effects. Strong hydrophobicity and low natural bulk density

Active Publication Date: 2021-02-26
HEBEI XINSHIJIYE SPRAY APPLIED THERMAL & ACOUSTIC INSULATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mineral fiber cotton prepared by the traditional process has a high filling density, poor waterproof and heat insulation effects, and is easy to collapse, which often leads to the loss of fireproof and heat preservation functions.
[0004] For the application of mineral fibers in sealing and friction materials, with the prohibition of asbestos, people pay more and more attention to mineral fibers, while mineral fibers prepared by traditional processes cannot be well dispersed when used in friction and sealing materials. Poor affinity with rubber and resin, resulting in great limitations in the application of mineral fiber in this field

Method used

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  • A kind of modified mineral fiber cotton and preparation method thereof
  • A kind of modified mineral fiber cotton and preparation method thereof
  • A kind of modified mineral fiber cotton and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) After mixing the raw materials for producing rock wool (blast furnace slag, basalt, and artificial material blocks at a weight ratio of 1:5:2), melt them into high-temperature raw material slurry at 1500°C;

[0038] (2) Throw the high-temperature mixed slurry into a cotton collection box with 3 spray ports with a diameter of 2cm on the top under the conditions of a centrifuge speed of 7000r / min and a wind speed of 200m / s, and make minerals with an average diameter of 5um cotton;

[0039] (3) When the temperature of the mineral wool in the cotton collection box drops to 130°C, use a two-fluid atomizing nozzle at the 1# spray port on the top of the cotton collection box, and use compressed air with a working pressure of 0.6MPa to spray the silane coupling agent KH580 is atomized and evenly sprayed on the surface of mineral wool through the opening on the top of the cotton collection box. The amount of silane coupling agent KH580 accounts for 0.3% of the weight of mine...

Embodiment 2

[0043] (1) The raw materials for producing slag wool (blast furnace slag, silica, and artificial material blocks in a weight ratio of 5:1:2) are mixed and then melted at 1430°C to form a high-temperature raw material slurry;

[0044] (2) The high-temperature mixed slurry is thrown into a cotton collecting box with 3 holes with a diameter of 2cm on the top under the conditions of a centrifuge speed of 7200r / min and a wind speed of 220m / s, and an average diameter of 3.8um is produced. cotton;

[0045] (3) When the temperature of the mineral wool in the cotton collection box drops to 130°C, use a two-fluid atomizing nozzle at the 1# spray port on the top of the cotton collection box, and use compressed air with a working pressure of 0.6MPa to spray the silane coupling agent KH171 is atomized and evenly sprayed on the surface of the mineral wool through the opening on the top of the cotton collecting box. The silane coupling agent KH171 accounts for 0.5% of the weight of the miner...

Embodiment 3

[0049] (1) After mixing the raw materials for rock wool production (blast furnace slag, basalt, and artificial material blocks at a weight ratio of 1:5:2), melt them into high-temperature raw material slurry at 1450°C;

[0050] (2) The high-temperature mixed slurry is thrown into the cotton collection box with 3 spray ports with a diameter of 2cm at the top under the conditions of a centrifuge speed of 7300r / min and a wind speed of 220m / s, and an average diameter of 4.8um is made. mineral wool;

[0051] (3) When the temperature of the mineral wool in the cotton collection box drops to 130°C, use a two-fluid atomizing nozzle at the 1# spray port on the top of the cotton collection box, and use compressed air with a working pressure of 0.6MPa to spray the silane coupling agent JH-N308 is atomized and evenly sprayed on the surface of mineral wool through the opening on the top of the cotton collection box. The amount of silane coupling agent JH-N308 accounts for 0.3% of the weigh...

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Abstract

The invention discloses a modified mineral fiber cotton and a preparation method thereof. The specific preparation process is as follows: at 80-130°C, the surface of the mineral wool is sequentially chemically coated with a silane coupling agent, physically coated with a mineral oil emulsifier and Two (beta hydroxyethyl) coc oil amines obtain the modified mineral fiber cotton of the present invention. The modified mineral fiber cotton of the present invention has good hydrophobicity, the moisture absorption rate is less than 0.2%, and its natural bulk density after blowing is less than 45Kg / m 3 , It can be applied to building cracks or ceilings and other parts, and its heat insulation and waterproof effects are good. It can also be added to sealing materials and wear-resistant materials after physical slag removal, and its products have good sealing performance and wear resistance, meeting market demand.

Description

technical field [0001] The invention relates to a mineral fiber cotton. Specifically, it is a preparation method of modified mineral fiber cotton. Background technique [0002] Mineral fiber cotton is made from natural ore or blast furnace slag, which is melted at high temperature and centrifuged into fibers. Mineral fiber cotton has excellent properties such as heat insulation, fire prevention, and sound absorption, and is widely used in the fields of industrial and civil building filling, sealing and friction materials. [0003] For construction applications, blowing technology can be used to blow and fill mineral fiber cotton into the cracks and interlayer structures to achieve the fireproof and thermal insulation functions of buildings. However, the mineral fiber cotton prepared by the traditional process has a high filling density, poor waterproof and heat insulation effects, and is easy to collapse, which often leads to the loss of fireproof and heat preservation fun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C25/50C03C25/40C03C25/255C03C25/25C03B37/04C09K3/14
CPCC03B37/04C03C25/40C03C25/50C09K3/1436C03C25/25C03C25/255
Inventor 迟国平迟梅君王景洲
Owner HEBEI XINSHIJIYE SPRAY APPLIED THERMAL & ACOUSTIC INSULATION
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