Dreg ball free alumina silicate cotton velvet and its uses in brake field

A kind of technology of aluminum silicate and aluminum silicate fiber, applied in the direction of manufacturing tools, glass manufacturing equipment, etc., to achieve the effect of good heat resistance, stable friction coefficient and low noise

Active Publication Date: 2006-04-26
LUYANG ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the conventional production of aluminum silicate fiber, no matter it adopts melt-spinning or melt-blown fiber formation, uses external force to elongate the high-temperature molten droplet, and there are different degrees of slag balls in the product fiber, usually φ≥0.25mm Slag content generally ≥ 20%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 Preparation of brake pads for mining machinery

[0037] Use ordinary slag-free aluminum silicate cotton wool, its physical properties are

[0038] Fiber length 250~300μm±30

[0039] Fiber diameter 2~5μm

[0040] Does not contain slag balls of φ≥0.25mm

[0041] Mohs hardness 5~7

[0042] Operating temperature 1000~1300℃

[0043] Thermal conductivity W / mk 0.153

[0044] (500±20℃)

[0045] Tensile strength 1000~1600MPa

[0046] Does not contain slag balls with φ≤0.25mm.

[0047] The chemical composition is Al 2 o 3 43%, SiO 2 57%.

[0048] Use a special opener or fiber cutter to open, clean, crush, and screen ceramic fibers to separate cotton and slag, shorten fiber length, and reduce slag ball content to obtain aluminum silicate cotton wool , φ≥0.25mm slag ball content≤0~8%.

[0049] Manufactured according to the conventional brake pad method, the adhesive is made of phenolic resin or modified phenolic resin plus rubber, the amount of adhesive is 15...

Embodiment 2

[0053] Example 2 Preparation of brake pads for petroleum machinery

[0054] Use ordinary slag-free aluminum silicate cotton wool

[0055] Its physical properties are

[0056] Fiber length 50~150μm±30

[0057] Fiber diameter 2~5μm

[0058] φ≥0.25mm slag ball content 6~8%

[0059] Mohs hardness 5~7

[0060] Operating temperature 1000~1300℃

[0061] Thermal conductivity W / mk 0.150

[0062] (500±20℃)

[0063] Tensile strength 1000~1600MPa

[0064] Its chemical composition is Al 2 o 3 55%; SiO 2 45%; All the other are with embodiment 1.

Embodiment 3

[0065] Example 3 Preparation of brake pads for automobiles

[0066] To make zirconium-containing slag-free aluminum silicate cotton wool, its physical properties are

[0067] Fiber length 200~300μm±30

[0068] Fiber diameter 2~5μm

[0069] Mohs hardness 5~7

[0070] Operating temperature 1000~1300℃

[0071] Thermal conductivity W / mk 0.140

[0072] (500±20℃)

[0073] Tensile strength 1000~1600MPa

[0074] Does not contain slag balls with φφ≥0.25mm.

[0075] The chemical composition is Al 2 o 3 +SiO2 2 +ZrO 2 99.5%, of which, ZrO 2 ≥15%; impurity balance, all the other are the same as embodiment 1.

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Abstract

The present invention is one kind of aluminum silicate wool with few slag ball and its application in braking field. The aluminum silicate wool contains common, zirconium-containing and soluble aluminum silicate fibers, and has fiber length of 50-300 microns, fiber diameter of 2-5 microns, content of slag balls of diameter larger than 0.25 mm in 0-8 %, Mohs' hardness 5-7, use temperature 1000-1300 deg.c, thermal conductivity not higher than 0.153 W/mk at 500 deg.c, and tensile strength 1000-1600 MPa. It has chemical composition of Al2O3 43-55 wt% and SiO2 45-57 wt%; or Al2O3+SiO2+ZrO2 in 98.5-99.5 wt%, ZrO2 not less than 15 wt%, and impurity the rest; or SiO2 52-85 wt%, CaO 5-35 wt%, MgO 1-10 wt%, Al2O3 0-1 wt% and B2O3 1-2 wt%. The aluminum silicate wool is applied as reinforcing fiber material in braking field.

Description

technical field [0001] The invention belongs to the category of mechanical motion braking, and in particular relates to a slag-free aluminum silicate cotton wool and its application in the braking field. Background technique [0002] Braking material (also known as friction material), as a composite material with a high friction coefficient, is a key part of various machine brakes. It affects the reliability of the machine and the safety of driving and personal. , transportation machinery, chemical machinery, mining machinery, petroleum machinery and other machinery are indispensable. [0003] Brake materials are safety-critical components in clutch assemblies and brakes for vehicles and machinery. It is generally composed of three parts: binder, fiber reinforced material and filler. [0004] In the past, fiber reinforced materials were mainly asbestos products, but asbestos products have been eliminated due to environmental protection reasons. Due to its good heat resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/00C03B37/005C04B14/04
Inventor 鹿成洪鹿俊华张明全崔春海任大贵李京友
Owner LUYANG ENERGY SAVING MATERIALS CO LTD
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