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Magnesium-ceramic-based brake friction plate and preparation method thereof

A friction pad, magnesium ceramic base technology, applied in the field of brake pads, can solve the problems of poor damping effect, reduced braking performance, poor component dispersion, etc., to reduce high temperature wear, reduce the probability of noise, and reduce high temperature wear. Effect

Active Publication Date: 2020-06-16
河北星月制动元件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the friction materials of brake pads are mostly made of polymer ternary composite materials, which are composed of polymer binder (resin and rubber), reinforcing fiber and friction performance modifier and other compounding agents. After a series of production and processing And the finished product, this kind of brake pad has poor dispersion of internal components, high density (above 2.0 g / cm3), heavy weight, not outstanding damping effect and large braking noise; second, this type of brake pad brakes at high temperature The performance drops significantly, and the friction material is seriously worn out, so it is not suitable for long-term braking on mountainous roads; third, this type of brake pad contains more metal and heavy metal components, and in a humid environment, it is easy to rust and stick when parked for a long time. Will rust and stick to death

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The premise of constituting the preparation method is to obtain a mixed ingredient for the preparation of magnesia-based brake friction linings, including the following raw materials in the weight ratio: phenolic resin 8-15%, potassium magnesium titanate lamellae 10-20%, Elastic graphite 5-15%, ceramic fiber 5-10%, silane-treated mineral fiber 10-25%, molybdenum sulfide 3-8%, hydrated calcium silicate 3-6%, aramid fiber 1-4%, filler 30% -50%.

[0017] Among the ingredients of the above-mentioned mixed ingredients for preparing magnesia-based brake friction pads,

[0018] ——In order to enhance the toughness of the phenolic resin, the above-mentioned phenolic resin is a nitrile modified resin, which improves the impact strength of the product and prolongs the service life of the product under the premise of ensuring high heat resistance. When the amount of rubber is only 2%, the impact strength of phenolic resin can be increased by 100%. When the amount of nitrile rubber...

Embodiment 1

[0027] Step 1, place 1% aramid fibers in a rake mixer for pre-opening for 5 minutes;

[0028] Step 2, 10% phenolic resin, 18% potassium magnesium titanate lamella, 9% elastic graphite, 6% ceramic fiber, 14% silane-treated mineral fiber, 5% molybdenum sulfide, 4% calcium silicate hydrate and filler 34% was poured into a rake mixer and mixed for 12 minutes to form a finished product of mixed ingredients;

[0029] Step 3, placing the finished product of the mixed ingredients in a hot vulcanizer for 9 minutes, and setting the vulcanization temperature of the mold of the hot vulcanizer at 140°C;

[0030] Step 4: Put the vulcanized product obtained in Step 3 in a high-temperature curing furnace, set the temperature within the range of 160°C±2°C for 2 hours, and then set the temperature within the range of 180°C±2°C for 2 hours.

[0031] Test result: the specific gravity is 1.92g / cm3. High temperature friction coefficient: 0.37. Average coefficient of friction: 0.40

Embodiment 2

[0033] Step 1, place 2% aramid fibers in a rake mixer for pre-opening for 7 minutes;

[0034] Step 2, 9% phenolic resin, 20% potassium magnesium titanate flakes, 9% elastic graphite, 6% ceramic fiber, 14% silane treated mineral fiber, 5% molybdenum sulfide, 5% calcium silicate hydrate and filler 30% was poured into a rake type mixer and mixed for 13 minutes to form a finished product of mixed ingredients;

[0035] Step 3, placing the finished product of the mixed ingredients in a hot vulcanizer for 7 minutes, and setting the vulcanization temperature of the mold of the hot vulcanizer at 150°C;

[0036] Step 4: Put the vulcanized product obtained in Step 3 in a high-temperature curing furnace, set the temperature within the range of 160°C±2°C for 2 hours, and then set the temperature within the range of 180°C±2°C for 2 hours.

[0037] Test result: specific gravity 1.95g / cm3. High temperature friction coefficient: 0.36. Average coefficient of friction: 0.40

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Abstract

The invention belongs to the technical field of brake pads, and particularly relates to a magnesium-ceramic-based brake friction plate and a preparation method. The magnesium-ceramic-based brake friction plate comprises the following raw materials of, by weight, 8-15% of phenolic resin, 10-20% of potassium titanate magnesium sheet crystal, 5-15% of elastic graphite, 5-10% of ceramic fiber, 10-25%of silane treatment mineral fibre, 3-8% of molybdenum class sulfide, 3-6% of hydrate calcium silicate, 1-4% of aramid fiber and 30-50% of padding. The ingredients are subjected to the steps of aramidfiber opening, blender mixer mixing, high temperature vulcanization and curing to finally form the magnesium-ceramic-based brake friction plate. The magnesium-ceramic-based brake friction plate prepared from the mixed ingredients has the characteristics of uniform texture, small noise, lower density, light weight, outstanding high temperature brake effect and wear resistance.

Description

technical field [0001] The invention belongs to the technical field of brake pads, and in particular relates to a mixed ingredient for making magnesia-ceramic-based brake friction pads and a method for preparing magnesia-ceramic-based brake friction pads by using the mixed ingredients. Background technique [0002] Automobile brake pads are important safety components in the process of automobile driving. With the continuous advancement of automobile industry technology, brake pads not only meet mandatory standards in terms of safety performance, but also put forward more advanced requirements in terms of braking comfort and wear resistance. High requirements, the application and formula ratio of the friction material of the brake pad and its production process determine the performance level of the brake pad. At present, the friction materials of brake pads are mostly made of polymer ternary composite materials, which are composed of polymer binder (resin and rubber), reinf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02F16D69/00
CPCF16D69/00F16D69/023F16D69/026F16D2069/002F16D2200/0039F16D2200/0052F16D2200/0056F16D2200/006F16D2200/0082
Inventor 孙金鹏赵荣康会玲
Owner 河北星月制动元件有限公司
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