公开(公告)号：US20180112730A1

公开(公告)日：2018-04-26

申请号：US15838870

申请日：2017-12-12

Applicant: HITACHI CHEMICAL COMPANY, LTD.

Inventor： Takashi Kikudome ,  Mitsuo Unno ,  Kazuya Baba

IPC: F16D65/092 ,  F16D69/02

CPC classification number: F16D65/092 ,  F16D69/026 ,  F16D2200/0065 ,  F16D2200/0069 ,  F16D2200/0073 ,  F16D2200/0086

Abstract: A non-asbestos frictional material composition is provided, which is capable of provide a frictional material with low environmental load and with excellent friction coefficient, anti-crack properties, and abrasion resistance compared with conventional ones. Furthermore, a frictional material and a friction member formed by using this non-asbestos frictional material composition are provided. The non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber base material, includes: copper in a content of 5 mass % or less as a copper element; a metal fiber other than a copper fiber and a copper alloy fiber in a content of 0.5 mass % or less; cashew dust in a content of 1.5-4.5 mass % as the organic filler; zirconium oxide with a particle size of 30 μm or less in a content of 30-45 mass % but not containing zirconium oxide with a particle size of more than 30 μm as the inorganic filler.

公开(公告)号：US09086105B2

公开(公告)日：2015-07-21

申请号：US14255416

申请日：2014-04-17

Applicant: HITACHI CHEMICAL COMPANY, LTD.

Inventor： Mitsuo Unno ,  Manabu Ono ,  Takashi Kikudome

IPC: F16D69/02 ,  C09K3/14 ,  C08J5/14 ,  B29C70/78 ,  C08L61/04 ,  F16D69/00 ,  B29K401/00 ,  B29K427/18 ,  B29K505/08 ,  B29K505/12 ,  B29K509/02 ,  B29K511/00 ,  B29K705/00 ,  B29L31/16

CPC classification number: F16D69/026 ,  B29C70/78 ,  B29K2401/00 ,  B29K2427/18 ,  B29K2505/08 ,  B29K2505/12 ,  B29K2509/02 ,  B29K2511/00 ,  B29K2705/00 ,  B29K2995/0016 ,  B29L2031/16 ,  C08L61/04 ,  F16D69/028 ,  F16D2069/002 ,  F16D2200/0069 ,  F16D2200/0086 ,  Y10T428/12035 ,  Y10T428/12951 ,  Y10T428/31703

Abstract: Provided is a friction material composition comprising: a binder; a fibrous base material; an abrasive material; an inorganic filler; and an organic filler, wherein the friction material composition further comprises: at least one selected from the group consisting of zinc, a cellulose fiber as the fibrous base materials and a flame retardant fiber as the fibrous base materials; an iron-based fiber as the fibrous base material in an specified amount; and an inorganic abrasive material having a Mohs hardness of 8 or higher and a particle size of 1 μm or larger as the abrasive material in an amount of 1 wt % or less. The present invention can provide a friction material composition which is less destructive to facing materials compared to conventional products, which has a high friction coefficient upon braking when used in repeated braking during high-speed traveling, and which is capable of suppressing pad wear and uneven pad wear, in the case that the friction material composition is formed into a brake pad for passenger cars. The present invention can also provide a friction material and a friction member using this friction material composition.

Abstract translation: 提供了一种摩擦材料组合物，其包含：粘合剂; 纤维基材; 磨料; 无机填料; 和有机填料，其中所述摩擦材料组合物还包含：选自锌，作为纤维基材的纤维素纤维和作为纤维基材的阻燃纤维的至少一种; 铁基纤维作为特定量的纤维基材; 以及Mohs硬度为8以上，粒径为1μm以上的无机研磨材料为1重量％以下的研磨材料。 本发明可以提供一种摩擦材料组合物，与传统产品相比，其在面对材料方面的破坏性较差，在常规产品中，当在高速行驶中用于重复制动时制动时具有高的摩擦系数，并且能够抑制垫磨损和不均匀 在摩擦材料组合物形成乘用车用刹车片的情况下，垫磨损。 本发明还可以提供使用该摩擦材料组合物的摩擦材料和摩擦构件。

公开(公告)号：US10316918B2

公开(公告)日：2019-06-11

申请号：US15161308

申请日：2016-05-23

Applicant: HITACHI CHEMICAL COMPANY, LTD.

Inventor： Mitsuo Unno ,  Masamichi MItsumoto ,  Kazuya Baba ,  Takashi Kikudome

IPC: F16D69/02

Abstract: Provided by the present invention are: a non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber substrate, wherein, in the non-asbestos frictional material composition, content of a copper is 5% or less by mass as a copper element, content of a metal fiber other than a copper fiber and a copper alloy fiber is 0.5% or less by mass, and a titanate salt is contained therein with antimony trisulfide or zinc powders, with content of the titanate salt being in the range of 10 to 35% by mass; and a frictional material and a friction member that use the said non-asbestos frictional material composition.

公开(公告)号：US09410591B2

公开(公告)日：2016-08-09

申请号：US14495512

申请日：2014-09-24

Applicant: HITACHI CHEMICAL COMPANY, LTD.

Inventor： Mitsuo Unno ,  Manabu Ono ,  Takashi Kikudome

IPC: F16D69/02 ,  B29C70/78 ,  C08L61/04 ,  F16D69/00 ,  B29K401/00 ,  B29K427/18 ,  B29K505/08 ,  B29K505/12 ,  B29K509/02 ,  B29K511/00 ,  B29K705/00 ,  B29L31/16

CPC classification number: F16D69/026 ,  B29C70/78 ,  B29K2401/00 ,  B29K2427/18 ,  B29K2505/08 ,  B29K2505/12 ,  B29K2509/02 ,  B29K2511/00 ,  B29K2705/00 ,  B29K2995/0016 ,  B29L2031/16 ,  C08L61/04 ,  F16D69/028 ,  F16D2069/002 ,  F16D2200/0069 ,  F16D2200/0086 ,  Y10T428/12035 ,  Y10T428/12951 ,  Y10T428/31703

Abstract: Provided is a friction material composition comprising: a binder; a fibrous base material; an abrasive material; an inorganic filler; and an organic filler, wherein the friction material composition further comprises: at least one selected from the group consisting of zinc, a cellulose fiber as the fibrous base materials and a flame retardant fiber as the fibrous base materials; an iron-based fiber as the fibrous base material in an specified amount; and an inorganic abrasive material having a Mohs hardness of 8 or higher and a particle size of 1 μm or larger as the abrasive material in an amount of 1 wt % or less. The present invention can provide a friction material composition which is less destructive to facing materials compared to conventional products, which has a high friction coefficient upon braking when used in repeated braking during high-speed traveling, and which is capable of suppressing pad wear and uneven pad wear, in the case that the friction material composition is formed into a brake pad for passenger cars. The present invention can also provide a friction material and a friction member using this friction material composition.