Fiber cork rubber sealing material and preparation method thereof

A rubber sealing and fiber technology, which is applied in the processing of fiber raw materials, synthetic cellulose/non-cellulose material pulp/paper, chemical instruments and methods, etc. Low strength and other problems, to achieve the effect of strong and tough physical properties, compressive and creep resistance improvement, and improved dispersion effect

Active Publication Date: 2016-09-28
成都俊马密封科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is mainly to solve the problems of relatively low tensile strength, low compressive performance and large stress relaxation performance of existing sealing gaskets, and to provide a fiber cork rubber sealing material and its preparation method to solve the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Adopt respectively the proportioning in the following table 1 to produce the fiber cork rubber sealing material of three kinds of different fiber contents of A, B, C of the present invention,

[0031] Table 1

[0032] Sample type

[0033] Wherein, the fiber is wood fiber, the size of granular cork is 100 mesh, and the latex adopts nitrile latex.

[0034] The preparation method of above-mentioned A, B, C three kinds of fiber cork rubber sealing materials is as follows:

[0035] The wood fiber is modified. The specific steps are: put the wood fiber into the pulper, add water to dilute the wood fiber concentration to about 4%, beat at high speed for ten minutes, so that the wood fiber is dispersed to form wood pulp fiber, and then through the papermaking process. A disc refiner is used to microfibrillate the wood pulp fibers to a slurry with a beating degree of 30-40°SR (Note: the beating degree generally only indicates the water filtration performance of the pu...

Embodiment 2

[0045] This embodiment uses different types of fibers to make fiber cork rubber sealing materials. The only difference from Embodiment 1 is that the composition and proportioning of each substance in this embodiment are different. This embodiment consists of five types in the following table 3. The material composition of the formula and proportion,

[0046] table 3

[0047] Sample type

[0048] The physical performance table of the fiber cork rubber sealing material made by using the above formula is listed in Table 4:

[0049] Table 4

[0050] Test items

[0051] Above-mentioned result fully demonstrates the extensiveness of the fiber that the present invention uses, no matter be the fiber of natural property (as wood pulp fiber, bamboo leaf fiber, or hemp fiber) or man-made synthetic fiber (as aramid fiber, or acrylic fiber), all can use In the process of the present invention, it is used as a reinforcing fiber for fibrous cork rubber sealing materials...

Embodiment 3

[0053] In this embodiment, different kinds of mixed fibers are used, including organic fibers and inorganic fibers, which are applied in the fiber cork rubber sealing material, and its formulation composition is as follows in Table 5:

[0054] table 5

[0055] Sample type

2a

2b

2c

2d

2f

wood pulp fiber

12%

8%

10%

mineral wool fiber

14%

14%

Polyester fiber

8%

10%

Aramid fiber

6%

8%

7%

fine grain cork

37%

35%

37%

35%

37%

Silicate Mineral Filler

17%

15%

17%

15%

18%

Latex (Ning Qing)

23%

23%

23%

23%

23%

Dispersant

1%

1%

1%

1%

1%

compounding agent

4%

4%

4%

4%

4%

[0056] The physical performance table of the fiber cork rubber sealing material that uses above formula to make by the method of the present invention is listed in following table 3:

[00...

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Abstract

The invention discloses a fiber cork rubber sealing material and a preparation method thereof. The problem that the conventional sealing gasket is relatively low in tensile strength, low in compressive property and high in stress relaxation performance is solved. The fiber cork rubber sealing material mainly consists of the following substances in percent by weight: 8-35 percent of latex, 20-65 percent of granulated cork, 5-40 percent of fiber, 1.2-6 percent of compounding agent and the balance of filler, wherein the length of the fiber is more than 1.0mm and less than 30.0mm. The fiber cork rubber sealing material has the advantages that the tensile strength is improved, the compressive property is improved, and a phenomenon that the stress relaxation performance is increased is effectively avoided.

Description

technical field [0001] The invention relates to a sealing liner, in particular to a fiber cork rubber sealing material and a preparation method thereof. Background technique [0002] The material of cork rubber sheet is made of cork particles mixed with various synthetic rubber and other auxiliary materials as raw materials, and the cork particles are mixed with synthetic rubber and auxiliary materials including fillers by using an open mill or internal mixer for general rubber products. Mix evenly, roll and press into sheets, and then vulcanize the finished product. Cork particles are aggregated from many air-filled suberin cells with a cellulosic skeleton on the cell walls, covered with suberin and cork wax, making it an impermeable substance that does not rot or visibly signs of aging. [0003] Cork gasket has the characteristics of low density, compressibility, elasticity, no heat transfer, no conductivity, no air permeability, durability, water insulation, moisture re...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08L97/02C08L77/00C08L67/00C08L33/20C08L9/04C08L9/08C08L11/02C08L7/02C08L13/02C08L23/22C08L27/12C08L83/04C08K13/04C08K7/10C08K7/14C08K7/06C08K3/34C08K3/22C08K3/06C09K3/10D21H13/38D21H13/40
Inventor马琼秀张丽
Owner成都俊马密封科技股份有限公司