WO2019210544A1 - 一种汽车用制动器摩擦衬片的制备方法 - Google Patents

一种汽车用制动器摩擦衬片的制备方法 Download PDF

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WO2019210544A1
WO2019210544A1 PCT/CN2018/087911 CN2018087911W WO2019210544A1 WO 2019210544 A1 WO2019210544 A1 WO 2019210544A1 CN 2018087911 W CN2018087911 W CN 2018087911W WO 2019210544 A1 WO2019210544 A1 WO 2019210544A1
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fiber
preparation
brake lining
automobile
mixture
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PCT/CN2018/087911
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English (en)
French (fr)
Inventor
杨余章
钱勤
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南通新源特种纤维有限公司
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/149—Antislip compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/58—Measuring, controlling or regulating
    • B29C2043/5816—Measuring, controlling or regulating temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/16—Frictional elements, e.g. brake or clutch linings
    • 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
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/006—Materials; Production methods therefor containing fibres or particles
    • 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
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0082—Production methods therefor
    • F16D2200/0086—Moulding materials together by application of heat and pressure

Definitions

  • This invention relates to a friction lining, and more particularly to a novel automotive brake lining suitable for use in automobiles, particularly for "anti-wear" non-asbestos for heavy-duty vehicles.
  • the present invention overcomes the deficiencies of the background art to provide a method of preparing a brake lining for an automobile.
  • the invention utilizes a novel characteristic filler, that is, a brake lining for an automobile by using "powdered aramid", which can solve and solve the problem of serious "thermal decay”. Achieve a satisfactory use.
  • the present invention provides the following technical solution: a method for preparing a brake lining for an automobile, characterized in that the formulation of the preparation method is calculated by weight percentage as follows: resin 7 to 14%, powdery aramid 5 to 12 %, fiber 6-16%, grinding agent 18 ⁇ 32%, anti-wear agent 3 ⁇ 5%, the balance is filler; the preparation method is: first step, according to the formula, respectively, each raw material is weighed, The raw materials are sequentially added to a high-speed mixer with a rotation speed of 550 rpm, and the mixture is mixed for 3 to 5 minutes to form a mixture; in the second step, the mixed mixture is weighed and put into a hot pressing mold for heat. Pressure, hot pressing temperature is 170-180 ° C, pressure is 15-20 MPa/dm 2 , dwell time is 1 min/mm; third step, heat treatment at 180 ° C for 2 hours, after cooling, the surface of the product is subjected to Grinding.
  • the fiber is an acrylic fiber.
  • the fiber is a carbon fiber.
  • the fibers are glass fibers.
  • the filler is a resin or a rubber mixture.
  • the invention has the beneficial effects of solving the problem of high temperature heat resistance and non-wear resistance in the friction material for braking, that is, a serious "thermal decay” problem.
  • the invention provides a high temperature resistant "powdered aramid” material, which is a main component of a brake lining for automobiles.
  • the friction plate has the characteristics of small thermal decay, stable braking, high temperature resistance, especially low temperature wear, and can make the friction material for automobile overcome the thermal stability during the braking friction process, and the heat is not good. A major decline in the problem, thereby reducing and avoiding traffic accidents due to poor thermal performance.
  • a method for preparing a brake lining for an automobile wherein the formula of the preparation method is calculated by weight percentage: resin 7-14%, powdered aramid 5-12%, fiber 6-16%, grinding agent 18 ⁇ 32%, anti-wear agent 3 ⁇ 5%, the balance is the filler;
  • the preparation method is: the first step, according to the formula separately weigh each raw material, the raw materials are sequentially added to the high speed of 550 rev / min In the mixer, the mixture is mixed for 3 to 5 minutes; in the second step, the mixed mixture is weighed and put into a hot stamping die for hot pressing, the hot pressing temperature is 170-180 ° C, and the pressure is 15 ⁇ 20MPa/dm 2 , the holding time is 1 minute/mm; the third step is heat treatment at 180°C for 2 hours, and after cooling, the surface of the product is ground.
  • the fibers are acrylic fibers.
  • the fiber is a carbon fiber.
  • the fibers are glass fibers.
  • the filler is a resin or a rubber mixture.
  • the invention mainly adopts a novel filler of organic "powdered aramid” which has a good double action of "adding friction and reducing friction", and is made into a friction material, and the performance thereof is better than that of a friction material prepared by a conventional method. , achieved significant results in wear resistance. At the same time, the friction performance stability rate is only 10%.
  • the brake lining formulation (weight ratio) of the present invention as described above is as follows.
  • the high temperature resistant "powdered aramid” used in the present invention is a novel material developed by the company for friction materials, and its performance is mainly to reduce wear and improve the high temperature friction performance of the product. It is a kind of "para-aramid polymer” powdery material, which is a yellow solid powder, has no melting point and has no odor. The particle size is about 100-200 ⁇ m. At the same time, it has good braking noise reduction effect in friction. .
  • the invention is further illustrated by the following comparative examples.
  • the invention and the comparative example, using the same equipment and production process, and the same production control parameters, are measured according to the standard of GB5763-2008, and the results of the constant speed friction coefficient are as follows.
  • the water absorption rate was 24 hours, and the test results are shown in the following table.
  • this aspect as the end value: resin 7%, powdered aramid 5%, fiber 16%, grinding agent 32%, grinding agent 5%, the balance is the filler; and resin 14%, powder Aramid 12%, fiber 6%, grinding agent 18%, grinding agent 3%, the balance is the filler.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Braking Arrangements (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

一种汽车用制动器摩擦衬片的制备方法，所述制备方法的配方按照重量百分比计算为：树脂7～14％、粉状芳纶5～12％、纤维6～16％、增磨剂18～32％、减磨剂3～5％、余量为填充料；所述制备方法为：第一步、按所述配方分别称取各原材料，加入高速混料机中形成混合料，第二步、称取所述混合料，投入热压模中进行热压，第三步、经冷却后对产品表面进行磨制成型；采用"粉状芳纶"制成的汽车用制动器衬片，可以克服"热衰退"问题，达到较为满意的使用效果。

Description

一种汽车用制动器摩擦衬片的制备方法 技术领域
本发明涉及一种摩擦片，特别是涉及一种适用于汽车，尤其是适用于重载汽车用的″抗磨型″的非石棉的新型汽车用制动器衬片。
背景技术
目前，传统的汽车，特别是用于重载汽车的非石棉制动器衬片，都是以酚醛树脂或改性的酚醛树脂为粘结剂，以钢纤维、合成纤维、矿物纤维、等纤维为增强材料，再以各种增摩填料、耐磨填料等为填料。通过混料、热压成型、热处理以及磨削加工等一系列工艺处理，最后制成汽车用特别是制成重载汽车用非石棉汽车用制动器衬片。
在背景技术中存在摩擦材料在耐热性能上存在的比较严重的热衰退、热膨胀、热裂纹的问题。
发明内容
本发明克服背景技术的不足提供了一种汽车用制动器摩擦衬片的制备方法。本发明利用新型特性填料，即采用″粉状芳纶″制成汽车用制动器衬片，可以满足解决和克服严重的″热衰退″问题。达到较为满意的使用效果。
本发明提供了下述技术方案：一种汽车用制动器摩擦衬片的制备方法，其特征在于，所述制备方法的配方按照重量百分比计算为：树脂7～14％、粉状 芳纶5～12％、纤维6～16％、增磨剂18～32％、减磨剂3～5％、余量为填充料；所述制备方法为：第一步、按所述配方分别称取各原材料，将所述原材料依次加入转速550转/分的高速混料机中，混料3～5分钟形成混合料；第二步、称取混制均匀的所述混合料，投入热压模中进行热压，热压温度为170～180℃，压强为15～20MPa/dm 2，保压时间为1分钟/毫米；第三步、在180℃温度下，热处理2小时，经冷却后对产品表面进行磨制成型。
或所述纤维为腈纶纤维。
或所述纤维为碳素纤维。
或所述纤维为玻璃纤维。
或所述填充料为树脂、橡胶混合物。
本发明的有益效果：为了解决制动用摩擦材料存在的高温不耐热与不耐磨的问题，即严重的″热衰退″问题。本发明提供了一种耐高温的″粉状芳纶″材料，为汽车用制动器衬片的主要成份。这种摩擦片具有热衰退小、制动平稳、耐高温，尤其是具有高温磨损较小的特点，并能够使汽车用的摩擦材料，在制动摩擦过程中，克服热稳定性不好，热衰退较大的问题，从而减少和避免了由于热性能不理想而出现行车事故。
具体实施方式
以下结合具体实施例对本发明作进一步描述。
一种汽车用制动器摩擦衬片的制备方法，所述制备方法的配方按照重量百分比计算为：树脂7～14％、粉状芳纶5～12％、纤维6～16％、增磨剂18～32％、减磨剂3～5％、余量为填充料；所述制备方法为：第一步、按所述配方分别称取各原材料，将所述原材料依次加入转速550转/分的高速混料机中，混料3～5分钟形成混合料；第二步、称取混制均匀的所述混合料，投入热压模中进行热压，热压温度为170～180℃，压强为15～20MPa/dm 2，保压时间为1分钟/毫米；第三步、在180℃温度下，热处理2小时，经冷却后对产品表面进行磨制成型。
所述纤维为腈纶纤维。
所述纤维为碳素纤维。
所述纤维为玻璃纤维。所述填充料为树脂、橡胶混合物。
本发明主要是以具有较好的″增摩与减磨″的双重作用的有机类″粉状芳纶″这种新型填料，制成摩擦材料，其性能比用常规的方法制成的摩擦材料，在耐磨性上取得了明显的效果。同时摩擦性能稳定率，仅达10％。
如上所述本发明制动器衬片配方(重量比)如下表。
Figure PCTCN2018087911-appb-000001
而下表则是本发明的三个比较例配方。
Figure PCTCN2018087911-appb-000002
试验表明，配方中耐高温与耐磨性好的″粉状芳纶″用量低于配方总量的5％以下时，其增摩作用不明显，如果用量高于配方总量15％以上时，则其制品强度变化较大性能也不理想，较好的用量为配方总量的7-12％，最好的用量为配方总量的10％。而本发明选用9-10％的重量比，效果最好。
本发明采用的耐高温″粉状芳纶″，是本公司开发研制用于摩擦材料的一种新型材料，其性能主要是减少磨损并可提高制品的高温摩擦性能。它是属一种″对芳纶高分子″粉状材料，为黄色固体粉状物、无熔点、无味的粒径约100-200μm，同时，在摩擦中应用还具有良好的降低制动噪音作用。
通过″粉状芳纶″在摩擦材料中应用试验，发现其不但具有较好的″增摩″作用的同时，还具有较好的″减磨″作用，具有这种双重作用特性的有机类摩擦材料用料，尤其是具有良好的耐磨性特性，是不多见的一种特性。
以下通过比较的实例来进一步说明本发明。
本发明与比较例，采用相同设备与生产工艺，以及同样的生产控制参数，按GB5763-2008的标准进行测定，其定速摩擦系数结果如下表。
Figure PCTCN2018087911-appb-000003
磨损率测试结果如下表。
Figure PCTCN2018087911-appb-000004
24小时吸水率，测试结果如下表。
Figure PCTCN2018087911-appb-000005
另外：本方面以作为端值的：树脂7％、粉状芳纶5％、纤维16％、增磨剂32％、减磨剂5％、余量为填充料；和树脂14％、粉状芳纶12％、纤 维6％、增磨剂18％、减磨剂3％、余量为填充料。一作为中间值的树脂10％、粉状芳纶10％、纤维12％、增磨剂30％、减磨剂4.5％、余量为填充料，作实验均取得理想的效果。

Claims (5)

  1. 一种汽车用制动器摩擦衬片的制备方法，其特征在于，所述制备方法的配方按照重量百分比计算为：树脂7～14％、粉状芳纶5～12％、纤维6～16％、增磨剂18～32％、减磨剂3～5％、余量为填充料；所述制备方法为：第一步、按所述配方分别称取各原材料，将所述原材料依次加入转速550转/分的高速混料机中，混料3～5分钟形成混合料；第二步、称取混制均匀的所述混合料，投入热压模中进行热压，热压温度为170～180℃，压强为15～20MPa/dm 2，保压时间为1分钟/毫米；第三步、在180℃温度下，热处理2小时，经冷却后对产品表面进行磨制成型。
  2. 根据权利要求1所述的一种汽车用制动器摩擦衬片的制备方法，其特征在于，所述纤维为腈纶纤维。
  3. 根据权利要求1所述的一种汽车用制动器摩擦衬片的制备方法，其特征在于，所述纤维为碳素纤维。
  4. 根据权利要求1所述的一种汽车用制动器摩擦衬片的制备方法，其特征在于，所述纤维为玻璃纤维。
  5. 根据权利要求1所述的一种汽车用制动器摩擦衬片的制备方法，其特征在于，所述填充料为树脂、橡胶混合物。
PCT/CN2018/087911 2018-05-02 2018-05-22 一种汽车用制动器摩擦衬片的制备方法 WO2019210544A1 (zh)

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CN105422697A (zh) * 2015-12-08 2016-03-23 安徽创新电磁离合器有限公司 一种制动器芳纶纤维摩擦片及其制造方法
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CN106321679A (zh) * 2016-08-31 2017-01-11 四川省华蓥市辽望实业有限公司 一种纸基摩擦片的制作工艺
CN107461437A (zh) * 2017-09-26 2017-12-12 安徽博耐克摩擦材料有限公司 一种盘式制动器刹车片衬片及其制备方法

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