Unlock instant, AI-driven research and patent intelligence for your innovation.

heat resistant inorganic fiber

A technology of inorganic fiber and average fiber diameter, applied in the direction of inorganic raw material artificial filament, etc., can solve the problems of secondary processed parts adhesion and melting, difficulty in fiberization, etc., and achieve the effect of good alumina reactivity

Active Publication Date: 2019-04-19
NICHIAS CORP
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Furthermore, alumina is often used for parts in the furnace, and there is a problem that the fibers contained in the secondary processed product react with the alumina, and the secondary processed product or parts adhere to or melt.
[0006] In addition, even if inorganic fibers with a specific composition have excellent properties such as biosolubility, they may not be easily fibrillated.

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
  • heat resistant inorganic fiber
  • heat resistant inorganic fiber
  • heat resistant inorganic fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～43、 comparative example 1～3

[0122] Fibers having the compositions shown in Table 1 were produced by a melting method, and evaluated by the following methods. The results are shown in Table 2.

[0123] (heat resistance)

[0124] The heat shrinkage rate was measured as an evaluation of the heat resistance of the fiber.

[0125] The heat shrinkage rate of the fiber was measured before and after firing at a predetermined temperature of 800° C. to 1400° C. for 8 hours by making a fleece or a press material (50 mm in length and width, and 5 to 50 mm in thickness) from the fiber.

[0126] Two or more platinum pins were driven into the surface of each prepared sample, the distance between the platinum pins was measured before and after heating, and the dimensional change rate was defined as the heat shrinkage rate.

[0127] (alumina reactivity)

[0128] About 1 g of alumina powder with a purity of more than 99% was extruded with a die with a diameter of 17 mm to form pellets. This pellet was placed on a samp...

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
diameteraaaaaaaaaa
Login to View More

Abstract

Inorganic fibers which comprise K 2 O, MgO, SiO 2 and Al 2 O 3 as main components, the content of MgO being more than 20 mol% and the content of SiO 2 being 53 mol% or less. Inorganic fibers which comprise K 2 O, MgO, SiO 2 and Al 2 O 3 as main components, the content of K 2 O being less than 12 mol%. Inorganic fibers which comprise K 2 O, MgO, SiO 2 and Al 2 O 3 as main components, the amounts of K 2 O, MgO, SiO 2 and Al 2 O 3 satisfying the following composition:K 2 O: 5 to 30 wt%, MgO: 5 to 30 wt%, Al 2 O 3 : 20 to 65 wt%, and SiO 2 : 10 to 45 wt%.

Description

technical field [0001] The present invention relates to a biosoluble inorganic fiber excellent in heat resistance. Background technique [0002] Asbestos is light in weight, easy to handle, and excellent in heat resistance, so it is used, for example, as a heat-resistant sealing material. However, asbestos is banned because it can be inhaled by the human body to cause diseases in the lungs, and ceramic fibers and the like are used instead. Ceramic fibers and the like are said to be as high in heat resistance as asbestos, and there is no health problem if handled properly, but there is a trend for further safety. Therefore, various biosoluble inorganic fibers have been developed aiming at biosoluble inorganic fibers that do not or hardly cause problems even if they are inhaled into the human body (for example, Patent Documents 1, 2, and 3). [0003] Most of the currently commercially available biosoluble fibers have high solubility in physiological saline at pH 7.4. Howeve...

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 Patents(China)
IPC IPC(8): C03C13/00D01F9/08
CPCC03C13/06C03C3/062C03C3/087C03C2213/02C04B35/62245C04B2235/3201C04B2235/3206C04B2235/3208C04B2235/3272C04B2235/5264C04B2235/96C04B2235/9607
Inventor 岩田耕治北原英树持田贵仁米内山贤添田一喜三木达郎
Owner NICHIAS CORP