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A friction material containing organic nano-bentonite and its preparation method

A nano-bentonite and friction material technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of affecting the strength of materials, the interface is not tightly bonded, etc., and achieve the effect of improving friction performance, improving performance, and improving performance.

Inactive Publication Date: 2017-01-18
射阳县射阳港对虾养殖二公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, bentonite itself is an inorganic material. Adding it to the friction material as a filler will inevitably involve the problem of loose interfacial bonding between the organic and inorganic bodies inside the friction material, which will affect the strength of the material.

Method used

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  • A friction material containing organic nano-bentonite and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1: first sodium-based bentonite and distilled water are mixed into the bentonite suspension that concentration is 6%, get 1% quaternary ammonium salt cetyltrimethylammonium bromide and add in the bentonite suspension; Place the suspension in a stirrer at a constant temperature of 40°C and stir for 4 hours. After cooling, add a silane coupling agent solution and stir evenly; The bulk bentonite is pulverized, ground and sieved to obtain organic nano-bentonite;

[0059] Select 12 parts of binder in parts by weight; 10 parts of reinforcing fiber; 10 parts of organic nano-bentonite; 30 parts of filler, place in a high-speed mixer, stir for 20 minutes to make it evenly mixed; put the mixed raw materials into the mold, Then put the mold in the lamination testing machine, preheat at 155°C for 3 minutes, then start hot pressing, set the pressure to 35Mpa, press for 1 minute first, open the mold to release the air, close the mold and press for 1 minute, and then releas...

Embodiment 2

[0060] Embodiment 2: first sodium-based bentonite and distilled water are mixed into the bentonite suspension that concentration is 8.5%, get 10% quaternary ammonium salt cetyltrimethylammonium bromide and add in the bentonite suspension; The suspension was placed in a stirrer at a constant temperature of 90°C and stirred for 8 hours. After cooling, the silane coupling agent solution was added and stirred evenly; The bulk bentonite is pulverized, ground and sieved to obtain organic nano-bentonite.

[0061] Select 15 parts of binder in parts by weight; 30 parts of reinforcing fiber; 50 parts of organic nano-bentonite; 60 parts of filler, place in a high-speed mixer, stir for 30 minutes to make it evenly mixed; put the mixed raw materials into the mold, Then put the mold in the lamination testing machine, preheat at 165°C for 5 minutes, then start hot pressing, set the pressure to 45Mpa, press for 1 minute, open the mold to release the air, close the mold and press for 1 minute,...

Embodiment 3

[0062] Embodiment 3: first sodium-based bentonite and distilled water are mixed into the bentonite suspension that concentration is 7%, get 6% quaternary ammonium salt cetyltrimethylammonium bromide and add in the bentonite suspension; Place the suspension in a stirrer at a constant temperature of 65°C and stir for 6 hours. After cooling, add a silane coupling agent solution and stir evenly; The bulk bentonite is pulverized, ground and sieved to obtain organic nano-bentonite;

[0063] Select 14 parts of binder in parts by weight; 20 parts of reinforcing fiber; 40 parts of organic nano-bentonite; 45 parts of filler, place in a high-speed mixer, stir for 25 minutes to make it evenly mixed; put the mixed raw materials into the mold, Then put the mold in the lamination testing machine, preheat at 160°C for 4 minutes, then start hot pressing, set the pressure to 40Mpa, press for 1 minute first, open the mold to release the air, close the mold and press for 1 minute, and then releas...

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Abstract

The invention discloses a friction material containing organic nanometer bentonite. The friction material comprises, by weight, 12-15 parts of a binder, 10-30 parts of reinforced fibers, 10-50 parts of organic nanometer bentonite and 30-60 parts of a filling material. Through use of the organic nanometer bentonite in preparation of the high-performance friction material, bentonite addition-caused adverse interface problem is solved. Through use of cetyl trimethyl ammonium bromide as an intercalator, the layered bentonite is peeled to form micro / nano level slice layers so that the bentonite can be well and physically combined with other organic and inorganic ingredients in the friction material and friction material performances are improved. Through use of a silane coupling agent as a bentonite surface modifier, in microcosm, bentonite is bonded to other organic and inorganic ingredients in the friction material by inner chemical bonds so that good chemical bonding effects are obtained and friction material performances are further improved.

Description

technical field [0001] The invention relates to the field of an environment-friendly friction material, in particular to a high-performance friction material for cars reinforced by organic nano-bentonite. Background technique [0002] In recent years, the automobile industry has developed rapidly, and my country has become a big country in automobile production and sales. People have higher and higher requirements for friction materials for automobiles, requiring them to have a suitable friction coefficient, low wear, environmental protection, high performance and low cost. But for most enterprises, the key problem encountered in production is that the cost is too high, and they are eager to reduce the cost without changing the performance of the original product. It has been found that many fillers (such as bentonite, clay, kaolin, barite, calcium carbonate, etc.) have a wide range of sources and are cheap, and can be added to friction materials in large quantities. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/14
Inventor 王占红侯贵华宋娟王斐何文平王雨新
Owner 射阳县射阳港对虾养殖二公司