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Automotive resin-based powder metallurgy potassium titanate fiber friction material and preparation method thereof

An iron-based powder metallurgy and powder metallurgy technology, applied in friction linings, mechanical equipment, gear shifting mechanisms, etc., can solve problems such as scratches on automobile brake discs or drums, friction noise, etc., and achieve good anti-wear characteristics, stable The effect of low friction coefficient and hardness

Inactive Publication Date: 2018-07-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong rigidity and hardness of the iron-based powder metallurgy friction material, it is easy to cause scratches and friction noise on the brake disc or drum of the car.

Method used

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  • Automotive resin-based powder metallurgy potassium titanate fiber friction material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of short and fine iron-based powder metallurgy friction material: basic material formula: in terms of mass percentage, the matrix material formula is 50% iron, 5% copper, 3% tin, 10% quartz powder, 15% aluminum oxide, disulfide Molybdenum 2%, graphite powder 15%; forming agent is kerosene, based on the total weight of the mixture, the addition of the forming agent is 0.4% total weight. Mix the above materials evenly, pour them into the mold with a pressure of 500MPa, and press them into a slender rod shape with a diameter of φ2mm×200mm in length, separate each slender rod-shaped green compact, and put it into a sintering furnace. Under the conditions, the temperature rises to 1000°C, keeps the temperature for 4 hours, and cools to room temperature with the furnace.

[0031] Under dry conditions, it is placed for more than 24 hours; then it is cut, crushed, and screened with an 8-mesh sieve.

[0032] Preparation of composite friction material: basic material...

Embodiment 2

[0038] Preparation of short and fine copper-based powder metallurgy friction material: basic material formula (by mass percentage): 60% iron, 5% copper, 5% quartz powder, 10% aluminum oxide, 3% molybdenum disulfide; calcium fluoride 7%, graphite powder 10%; forming agent is kerosene, based on the total weight of the mixture, the content of the forming agent is 0.5% total weight. Mix the above materials evenly, pour them into the mold with a pressure of 400MPa, and press them into a slender rod shape with a diameter of φ2mm×200mm in length, separate each slender rod-shaped green compact, and put it into a sintering furnace. Under the conditions, the temperature rises to 900°C, keeps the temperature for 5 hours, and cools down to room temperature with the furnace.

[0039] Under dry conditions, it is placed for more than 24 hours; then it is cut, crushed, and screened with an 8-mesh sieve.

[0040] Preparation of composite friction material: material basic formula (by mass perc...

Embodiment 3

[0046] Preparation of short and fine iron-based powder metallurgy friction material: basic material formula (by mass percentage): 70% iron, 1% tin, 14% quartz stone powder, 5% aluminum oxide, and 10% graphite powder;

[0047] The forming agent is kerosene, based on the total weight of the mixture, and the content of the forming agent is 0.4% by weight. Mix the above materials evenly, pour them into the mold with a pressure of 500MPa, and press them into a slender rod shape with a diameter of φ2mm×300mm in length, separate each slender rod-shaped green compact, and put it into a sintering furnace. Under the conditions, the temperature rises to 1100°C, keeps warm for 2 hours, and cools down to room temperature with the furnace.

[0048] Under dry conditions, it is placed for more than 24 hours; then it is cut, crushed, and screened with an 8-mesh sieve.

[0049] Preparation of composite friction material: basic material formula (by mass percentage): cashew oil modified phenolic...

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Abstract

The invention discloses a method for producing a resin-based powder metallurgy potassium titanate fiber friction material used for vehicle. The method comprises the following steps: uniformly mixing a matrix powder material and a forming agent, dumping a mixture into a die, compacting the mixture to several elongated rods, compacting the elongated rods, separating the elongated rods, putting the elongated rods in a sintering furnace, under condition of introducing nitrogen or hydrogen, heating the materials to obtain a Fe-based powder metallurgy friction material; shearing the Fe-based powder metallurgy friction material, crushing the Fe-based powder metallurgy friction material, and sieving; by metering with mass percentage, uniformly mixing 10-20% of cashew oil-modified phenolic resin, 30-50% of the Fe-based powder metallurgy friction material, 10-30% of potassium titanate fiber, 5-15% of an abrasive, 10-20% of a lubrication material, and 5-20% of a filling material; performing hot press molding on the materials, cooling the materials, and discharging. The friction material combines the characteristics of high temperature resistance and low abrasion of the Fe-based powder metallurgy friction material as well as good toughness and low hardness of the potassium titanate resin-based composite friction material, and the obtained material has the characteristics of high temperature resistance, low abrasion, good toughness, and low hardness.

Description

technical field [0001] The invention relates to a resin-based composite friction material, in particular to a composite friction material mainly composed of potassium titanate fiber and iron-based powder metallurgy material and a preparation method thereof. Background technique [0002] Composite friction materials are composed of materials with different physical and chemical properties and a high-molecular polymer matrix with low strength and good toughness. Since polymer materials usually cannot withstand high stress and high temperature, in order to improve the yield strength and high temperature stability of polymer materials, thermosetting resins with network structure are used, generally various modified high temperature phenolic resins. At the same time, in order to achieve the ideal braking effect and comprehensive mechanical properties, it is necessary to add various fibers, lubricating materials, abrasives and fillers, and the polymer matrix material is almost onl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/14C08K13/04C08K3/08C08K7/08C08K7/10C08K3/36C08K7/00C08K3/30C22C33/02F16D69/02
CPCC08K3/08C08K3/30C08K3/36C08K7/00C08K7/08C08K7/10C08K13/04C08K2003/0856C08K2003/3045C22C33/006C22C33/02F16D69/02F16D2069/002F16D2200/00C08L61/14
Inventor 陈东
Owner SOUTH CHINA UNIV OF TECH
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