KR960000863B1 - Preparation method of wet friction material - Google Patents
Preparation method of wet friction material Download PDFInfo
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- KR960000863B1 KR960000863B1 KR1019930009946A KR930009946A KR960000863B1 KR 960000863 B1 KR960000863 B1 KR 960000863B1 KR 1019930009946 A KR1019930009946 A KR 1019930009946A KR 930009946 A KR930009946 A KR 930009946A KR 960000863 B1 KR960000863 B1 KR 960000863B1
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- weight
- friction
- friction material
- resin
- heat
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- 239000002783 friction material Substances 0.000 title claims description 24
- 238000002360 preparation method Methods 0.000 title 1
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 229920000877 Melamine resin Polymers 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000005011 phenolic resin Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 8
- 150000004706 metal oxides Chemical class 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000004640 Melamine resin Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 244000226021 Anacardium occidentale Species 0.000 claims description 3
- 235000020226 cashew nut Nutrition 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical class O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 4
- 229920001187 thermosetting polymer Polymers 0.000 description 4
- -1 silicic acid compound Chemical class 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/025—Compositions based on an organic binder
- F16D69/026—Compositions based on an organic binder containing fibres
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 발명에 대한 습식마찰제와 종래 습식마찰제의 따른 마찰계수를 나타낸 그래프.1 is a graph showing the coefficient of friction between the wet friction agent and the conventional wet friction agent for the present invention.
본 발명은 자동차, 2륜차, 산업용 차량등의 습식마찰제등에서 사용되는 습식마찰제의 성능을 개량한 습식마찰제 제조방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a wet friction agent that improves the performance of a wet friction agent used in wet friction agents such as automobiles, two-wheeled vehicles, and industrial vehicles.
종래 습식마찰제는 다음 두가지 방법으로 제조된 것이 있다.Conventional wet friction agents are prepared by the following two methods.
그중 하나는 목재펄프와 린터펄프를 병용하고 그들의 펄프 중에서 규산화합물, 금속산화물, 캐슈다스트를 혼합하고 거기에 다량의 분말상의 열경화성수지를 혼합한 후에 초지하여 습식마찰제의 원형을 제조하는 것이고, 다른 하나는 목재펄프와 린터펄프를 병용하고 규산화합물, 금속산화물, 캐슈다스트를 혼합하여 초지하고 건조 후에 열경화성 수지액에 침윤하여 단시간 가열가압하여 제조하는 것이다.One of them is a combination of wood pulp and linter pulp, a mixture of silicic acid compounds, metal oxides and cashewast in their pulp, mixed with a large amount of powdery thermosetting resin, followed by papermaking to produce a prototype of wet friction agents. The other is to use wood pulp and linter pulp together, mix the silicic acid compound, the metal oxide, and the cashewast and make it, and after drying, infiltrate into the thermosetting resin solution and produce it by heating and pressing for a short time.
그러나 종래의 제조방법은 양자 모두가 펄프류에의 혼합물이 다량의 규산화합물, 금속 산화물 및 소량의 캐슈다스트이기 때문에 마찰에 의한 발열로 마찰계수가 저하되고 또 마모량도 많고 특히 고온시에 심했다.However, in the conventional manufacturing method, since both the mixture to pulp is a large amount of silicic acid compounds, metal oxides and a small amount of cashewast, the coefficient of friction is lowered due to the heat generated by friction, and the amount of wear is high, especially at high temperatures.
또 전자의 제법에 의한 경우에는 초지하기 전의 공정에서 다량의 분말상의 열경화성수지(페놀수지)를 혼합하여 초지하기 때문에 원가상승의 원인이 되었다.In the former manufacturing method, a large amount of powdery thermosetting resin (phenolic resin) was mixed and papermaking in the step before papermaking, which caused a cost increase.
한편 후자의 제법에 의한 경우에는 액상 레진침윤한 후에 극히 단시간(수분가)의 가열가압 때문에 마찰재의 내부까지 완전히 경화되지 않고 따라서 마모되어감에 따라서 마찰계수의 변화 및 저하가 있고 마모량의 증가가 있었다.On the other hand, in the case of the latter method, after the liquid resin infiltrate, the heating pressure of the extremely short time (water value) does not completely harden to the inside of the friction material, and accordingly, the friction coefficient changes and decreases, and the amount of wear increases.
본 발명의 목적은 사용중 마찰계수의 변화 및 저하가 작고 안정되고 마모량이 작은 습식마찰재의 제조방법을 제공하는데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a method of manufacturing a wet friction material having a small change in friction coefficient and a decrease in use, and a small amount of wear.
상기 문제점을 해결하기 위한 수단으로써 본 발명은 규산화합물, 금속산화물 및 캐슈다스트에 디하여 마찰성능조정제를 첨가함으로써 그 성능을 개량시킨 것이다.As a means for solving the above problems, the present invention improves its performance by adding a frictional performance regulator in addition to silicic acid compounds, metal oxides and cashewast.
즉 초지할때에 규산화합물, 금속산화물 및 캐슈다스트이외에 마찰성능조정제로서 유리펄프, 고무액 및/또는 금속분말을 첨가하여 초지한다.In other words, papermaking is carried out by adding glass pulp, rubber liquid and / or metal powder as a frictional performance modifier in addition to silicic acid compounds, metal oxides and cashewasts.
또 일반 열경화성수지 대신에 초지하여 마찰재의 원형을 제조한 후에 마찰에 강한 액상메라민수지, 페놀수지 혼합액에 침윤시켜 건조한다.In addition, paper is manufactured in place of general thermosetting resin to prepare a circular shape of friction material, and then it is dried by infiltrating into a mixed liquid meramine resin and phenol resin which are resistant to friction.
또 메라민수지 페놀수지 혼합액에 침윤건조 후에 장시간 열처리함으로써 메라민, 페놀 혼합수지가 마찰재의 내부까지 완전히 경화되어 마모에 수반되는 마찰성능의 안정을 도모했다. 또, 고분자량의 메라민수지, 페놀수지는 경화되면 단단해지고 특히 목면설중에 들어가 부프른 섬유를 양호하게 망목상으로 또한 단단하게 경화시킨다.In addition, by infiltrating and drying the melamine resin phenol resin mixture for a long time, the melamine and phenol mixture resin are completely hardened to the inside of the friction material, thereby achieving stabilization of friction performance accompanying wear. In addition, high molecular weight melamine resins and phenolic resins harden when cured, and particularly during cotton wool, and stiff fibers are preferably hardened into a mesh.
마찰재의 겉보기 비중을 0.6∼0.9로 하여 다공질로 하였다.The apparent specific gravity of the friction material was 0.6 to 0.9 to be porous.
마찰성능조정제로서 사용하는 유리펄프는 융점이 높고 따라서 마찰열에 안정하고 특히 고온시에 있어서 양호한 마찰성능을 나타낸다. 또 고무액은 유리펄프의 마찰재 본체로부터 마찰로 인하여 탈락하는 것을 방지하기 위한 것이고 또 혼합하는 금속분말은 마찰하는 상대금속과의 사이의 마찰에 의해서 생긴 마모분을 제거하는 작용이 있고 열에 대해서 안정하다. 또 금속분말은 마찰에 의해서 발생된 열을 흡수하는 능력이 있어 마찰되는 상대금속에 축적되는 열을 어느정도 적게하여 안정된 마찰성능에 도움이 된다. 금속 분말은 분말이외에 박분을 사용해도 좋다.Glass pulp used as a frictional performance modifier has a high melting point and is therefore stable to frictional heat and exhibits good frictional performance, particularly at high temperatures. In addition, the rubber liquid is used to prevent falling from the friction material body of the glass pulp due to friction, and the metal powder to be mixed has the function of removing the abrasion caused by the friction between the rubbing metal and the heat stable. . In addition, the metal powder has the ability to absorb heat generated by friction, which helps to stabilize the friction performance by reducing the amount of heat accumulated in the counterpart metal to be rubbed. Metal powder may use foil powder other than powder.
액상의 메라민수지나, 페놀수지만을 사용하면 내열성에 한계가 있고 마찰력에 강한 내열성이 양호한 메라민수지와 페놀수지를 혼합 사용하면 내열성 향상과 마찰성능의 안정에 기여하기 때문에 액상의 메라민수지와 페놀수지를 혼합 사용한다. 특히 고분자량의 메라민수지는 페놀수지만의 경화에 의한 것보다도 더 단단하여 내마모성에 기여하고 또 경화시에 망목상으로 경화하여 다공성으로 되는 동시에 내마모성을 좋게 하고 각종 펄프류의 마찰에 의한 탈락을 방지하는데 크게 도움이 된다.When only liquid melamine resin or phenol resin is used, there is a limit in heat resistance, and when a mixture of melamine resin and phenol resin having good heat resistance against friction is used, it contributes to improved heat resistance and stability of friction performance. Use mixed. In particular, high molecular weight melamine resins are harder than phenolic resins, contributing to abrasion resistance, and when cured, they harden into a mesh to make them porous and at the same time wear resistant and prevent dropping by friction of various pulp. It is very helpful.
섬유길이가 긴 목면설을 이용하는 이유는 초지시에 섬유를 잘 부푸러지게 하기 위한 것이고 섬유의 탈락방지에 도움이 되기 때문이고 또 다공질로 하기 위해서이고 다공질이기 때문에 마찰재 본체에 습식의 기름을 많이 축유하게 하는데 크게 도움이 된다.The reason for using long cotton wool is to swell the fiber at the time of papermaking, to prevent the fall of the fiber, to make it porous, and to make it porous. It helps greatly.
수시침윤 건조후에 장시간 가열하는 것은 마찰재의 내부까지 완전히 경화시키기 위한 것이고 마찰에 의한 마모를 적게하고 또 마찰계수의 안정에 도움이 되기 때문이다.This is because the heating for a long time after the occasional infiltration drying is to completely cure the inside of the friction material and to reduce the frictional wear and to help stabilize the friction coefficient.
또 마찰재의 겉보기 비중을 0.6∼0.9범위로 한 것은 마찰재의 표면 및 내부까지 다공질로 하기 위한 것이며 습식마찰재에 필요한 기름을 충분히 내부까지 축유시켜 마찰시에 내부로부터 기름을 스며나오게 하여 마찰면에 기름이 떨어지는 일이 없이 기름을 보급하는데 도움이 되는 작용을 한다.In addition, the apparent specific gravity of the friction material is in the range of 0.6 to 0.9 to make the surface of the friction material porous and inside. The oil required for the wet friction material is sufficiently oiled to the inside to let oil leak out from the inside during friction, It works to replenish oil without falling.
본 발명에 사용되는 재료의 배합비는 아래와 같다.The compounding ratio of the material used for this invention is as follows.
장섬유 목면설(1.0∼30㎜) : 20∼80중량%Long fiber cotton wool (1.0 ~ 30㎜): 20 ~ 80 wt%
규산화합물 : 10∼40중량%Silicate Compound: 10-40 wt%
금속산화물 : 2∼10중량%Metal oxide: 2 to 10 wt%
캐슈다스트 : 1∼10중량%Cashew Dast: 1-10% by weight
고무액(고형분환산) : 1∼8중량%Rubber liquid (solid content conversion): 1 to 8% by weight
유리펄프 : 1∼6중량%Glass Pulp: 1-6% by weight
금속분말 : 1∼15중량%Metal powder: 1 to 15 wt%
실시예Example
장섬유 목면실(1.0∼3.0㎜) 55중량%와, 규산화합물 22중량%와, 금속산화물 5중량%와, 캐슈다스트 3중량%와, 고무액(고형분환산) 4중량%와 유리펄프 4중량%와 금속분말 7중량%를 교반기에 장입하여 교반하여 균일한 혼합물을 만든후에 초지하고 건조한 후에 고분자량 메라민수지, 페놀수지혼합액(메라민 수지 함유량5%이상)에 침윤시켜 건조한 후에 이 수지가 초지한 마찰재에 대해서 20∼30중량%가 되도록 하였다.55% by weight of long fiber cotton yarn (1.0 to 3.0 mm), 22% by weight of silicic acid compound, 5% by weight of metal oxide, 3% by weight of cashew dust, 4% by weight of rubber liquid (solid content conversion) and glass pulp 4 Charge the weight% and 7% by weight of the metal powder into a stirrer to form a homogeneous mixture, and then papermaking and drying, infiltrating high molecular weight melamine resin and phenol resin mixture (more than 5% of the melamine resin) and drying the resin. 20 to 30 weight% with respect to one friction material.
그후에 120±5℃로 조정된 로내에 70±5분동안 방치하여 가열하였다.It was then left to heat for 70 ± 5 minutes in a furnace adjusted to 120 ± 5 ° C.
이어서 열프레스에 의해서 단시간 가열 가압하여 마찰재의 겉보기 비중이 0.6∼0.9가 되도록 가압력을 조정하여 마찰재료를 제조하였다.Subsequently, the pressurizing force was adjusted so that the apparent specific gravity of the friction material might be 0.6 to 0.9 by heating and pressing for a short time by heat press to prepare a friction material.
상기 실시예에서 제조된 마찰재료와 종래의 마찰재료의 시험편을 만들어 SAE No. 2 관성형 마찰시험기에 의해서 아래 조건으로 시험을 행하였다.A test piece of the friction material prepared in the above example and the conventional friction material was made and SAE No. The test was performed on the following conditions by the 2 inertia friction tester.
시험편의 치수 : 148㎜(외경)×117㎜(내경)×1.8㎜(두께)Test piece dimensions: 148 mm (outer diameter) x 117 mm (inner diameter) x 1.8 mm (thickness)
시험편의 수 : 3매Number of test pieces: 3
관성모멘트 : 3.5㎏-mS²Moment of Inertia: 3.5㎏-mS²
단위하중 : 7㎏/㎠Unit Load: 7㎏ / ㎠
사용유 : 데키스론(광물유)Oil used: Dekisrone (mineral oil)
사용유의 온도 : 85℃, 120℃Temperature of oil used: 85 ℃, 120 ℃
사이클시간 1.5회/분Cycle time 1.5 times / minute
전체시험회수 5000회(각 온도에서)5000 test times (at each temperature)
본 발명에 의한 마찰재료와 종래의 마찰재료의 마찰특성에 대한 시험결과를 제1도에 각각 나타내었다.Fig. 1 shows the test results for the friction characteristics of the friction material according to the present invention and the conventional friction material, respectively.
또 시험 후의 마찰재료의 마모량을 표 1에 나타냈다.Table 1 also shows the amount of wear of the friction material after the test.
[표 1]TABLE 1
제1도 및 표1의 시험결과에서 명백한 바와 같이 본 발명에 의한 마찰재료는 마찰특성과 내마모성이 종래의 마찰재료에 비해서 현저히 우수함을 알 수 있다.As evident from the test results in FIG. 1 and Table 1, it can be seen that the friction material according to the present invention is remarkably superior to the friction material and wear resistance of the conventional friction material.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019930009946A KR960000863B1 (en) | 1993-06-03 | 1993-06-03 | Preparation method of wet friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019930009946A KR960000863B1 (en) | 1993-06-03 | 1993-06-03 | Preparation method of wet friction material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR950000825A KR950000825A (en) | 1995-01-03 |
| KR960000863B1 true KR960000863B1 (en) | 1996-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019930009946A KR960000863B1 (en) | 1993-06-03 | 1993-06-03 | Preparation method of wet friction material |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR960000863B1 (en) |
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1993
- 1993-06-03 KR KR1019930009946A patent/KR960000863B1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR950000825A (en) | 1995-01-03 |
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