JPS604638A - Friction material - Google Patents

Abstract

PURPOSE:To prevent frictional vibration by using as glass component glass fibers mixed with PbO, being formed by the use of a bonding agent, and thereby enhancing the initial frictional coefficient. CONSTITUTION:The PbO content in proportion to glass fibers used as frictional material shall preferably range 5-40wt%. In order to make the glass fibrous mixed with PbO, a spinning method with a platinum nozzle may be used to yield long fibers, or a blow-off method to yield short fibers. When the fibers obtained are to be hardened, merely a bonding agnet may be used, or the fibers may be processed into thread or cloth prior to application of bonding agent, wherein a thermo-hardening resin or rubber should be used as a bonding agent. One of the methods of forming into products is such that the material is mixed together in a V-type blender to be followed by pressurization and heating.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides friction materials for vehicles, such as brake shoes for vehicles, which have excellent frictional properties.

This product is related to automobile disc bands, brake linings, and KHUTTE 7A/G temples, and provides a friction material KN that is most suitable for KHUTTE casings for VC cars.

Are conventional friction materials generally made of asbestos? ] L-Base material, this A? J) Use the sweetener by molding it into the desired shape.

The asbestos-based friction material of the sword and sword is M of 7! Manufacturing process and I! ＃Asbestos dust is generated when using scrubbing, which is harmful to health.
There are shoes and awns. Therefore, I started searching for a material to replace asbestos, and I was concerned about using canvas fiber threads made of cotton fibers for cufflinks.

This gaffus coffin fiber-based material is made of glass fiber as a skeleton material. It is known that the addition of mechanical cross members, metal powder, or metal wire is effective.

However, the disadvantages of this glass-based friction material are that it has a low coefficient of friction (especially the initial coefficient of friction), and frictional motion (the lifting platform of automobile facings is known as shudder), which manifests itself as vibrations and squeal in the case of brakes. (Wanru.) or has a flaw that is easy to wake up.

Therefore, the Ministry of the Invention conducted various studies to see if it was possible to improve the frictional properties by adding glass to the cuff fibers. As a result, we found that a friction material made by molding cuff fibers with PbO as the bottom part of the guffs with a binder was found to improve the initial coefficient of friction and friction. Good for vibration characteristics, wear, etc.
I saw something special.

The crow that is used for the conventional Gance fiber Itogishibori materials is the king of E-cuffs. E glass is simply S jug,
ALOs, CaO, MgO, ByOn, small amount of Na
n07)). The cuffs used in the present invention are distributed with PbO and Sign and PbO are used as cuff components, and the effect of the present invention is exhibited by the distribution formula. Depending on the purpose, it may be distributed to B103 or At)mum, or it may be distributed to CaO, N a * 0, or K lO%. Preferably Pb on E-cuffs and A-glass.
If the cufflinks distributed to O are used, the melting point of the cufflinks will be 9, and the melting point of the cufflinks will be 5wt% to 40wt if PbO exceeds 40wt% when distributed to PbO and fiberized. The preferable range is 0'.To make PbO sweetened cufflinks into fibers, it can be made into fibers by spinning from a platinum nozzle, or it can be made into short fibers by a blow-off method. The fiber diameter is 0.1 μ~
20μ is appropriate, but preferably 2μ to 16μ.
For short fibers, the fiber diameter may be less than one inch or the average diameter may be 90 spun fibers or blown-away fibers, which may be hardened with a reed binding material, or may be made of yarn, woven fabric, etc. It may be processed into a movie and made into a movie.

As a binding material, it is used as a heat-resistant material or rubber. The thermosetting resin is phenol 11t1 fat.

It is preferable to use me7min resin, phenol memmin stool fat, etc. alone or in combination. Also, as the rubber, NBR or SBR is preferable. It can also be used with photo-filled gamma cuff fibers.

As a molding method, each electrode material may be opened using a V-blender, Henschel mixer, kneader, etc. and then thermoformed (JD), or it may be kneaded with a thickening agent into long fibers to form a guco rubber γ. Example 1: SiCL 54 wt%, Al *Os 15 wt%
, Ca017wt%, iVlgo5wt%,
E cuffs made of Btus 8 wt%, Na*U O, 6 wt% 11iJI]-4 wt%, and PbU cuffs melted and mixed in an air furnace and made into short fibers by blowing with τ flame. Ta. PbO allocation f in cufflinks
f11wt%, 2.5wt%, 5wt%, 10
wt%, 2D we%, 50 we%, 40
WL%, 50 wt%, 60 wt% and 9 pieces were made into short fibers with an average diameter of 5μ, and using this, the short fibers were made using the F8 method to produce 60 pieces of short fibers. Denbu, Sufu 31] JJF quantity county uniform-rtt
Mixed machines, then turned on the carting machine RT and started waeppi
``This web is 85 years old, and the wear-resistant powder of thermally graded cashew shell oil τIS storm part i was also added to the late condenser VC cam and snow bar.

This sunniba grape tree spinner is the first time to go to the gym 2, 5
It was made into a mn+ single yarn. Next, these two single yarns have a diameter of 016f.
I twisted one piece of straight brass of f1m and made it into a yarn by adding 1 yen to the yarn.The yarn was made with 1η of menomin (20% VC compared to the fat π yarn), and the rope was made into a yarn.

Next, I wrapped the 6 rows of 1 year old that I had obtained in the previous one and wound them with an inner diameter of 160φ and an outer diameter of 200φVc, and used a regular breather to make a tablet [倚f'(
o This tablet was heated and pressure molded at 150±5°C, and then it was made into a Kufunote facing by heat treatment at 180°C for 4 hours. .

Comparison transfer 1 E S tO* 84 wt%, At mO315wt
%+ CaO17wt'! 'o, Mg05 wt
%, Btus 8 wt%, Nan00.6 wt%
.

ψ Other than 0.4wt% E Guns τ by personnel @
The short fibers with an average diameter of 5μ were obtained using the same method as in Example 1; the figure shows a comparison with Example 1. The initial frictional friction coefficient in Example 1 was obtained using an inertial dynamometer.
As shown in Figure 0, which was measured as the acceleration of the shudder vibration attached to a passenger car, it can be seen that the cuff fibers coated with PbOk of the present invention are far superior to conventional cuff fibers. P in Ganos in %
When the content of bO is 5 wt% or more, the effect is excellent (which was difficult in practical terms).

[Brief explanation of the drawing]

The interval is the temporality of the non-invented embodiment and the comparative object.

Claims (1)

[Scope of Claims] 1. A friction material characterized by being molded with a binding agent made of sugar fibers self-adhered to PbO as a glass fraction. 2. The friction material according to item 1, which is made of cuff fibers made from cuff fibers made by using cuff fibers or cuff fibers cut by the blow-off method. 3. The friction material according to item 1 or 2, in which the M base material is made of a heat-transformable resin. 4. Paragraph 1 or 2 of the yoke of the Wuxuan claim where the tying material is rubber.
Friction material described in section.