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Composite sealing material

A composite sealing and inorganic filler technology, applied in other chemical processes, chemical instruments and methods, etc., to achieve the effects of improving important performance, improving comprehensive performance, and improving sealing performance

Active Publication Date: 2014-06-25
CHINA NAT PULP & PAPER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015]In order to overcome the shortcomings of poor comprehensive performance of materials, especially poor sealing performance due to the inability to use low particle size fillers in the current papermaking fiber sealing material manufacturing technology, this paper The invention proposes a manufacturing technology of asbestos or non-asbestos fiber composite sealing material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: the weight ratio of each component in asbestos or non-asbestos fiber composite sealing material formula is:

[0032]

[0033] The mixed inorganic filler consists of 65% of 1 # Calcium Carbonate, 25% of 2 # calcium carbonate and 10% of 3 # Calcium carbonate graded. The average particle size of each filler used in gradation is shown in Table 1.

[0034] Table 1

[0035] Filling number 1 # calcium carbonate 2 # calcium carbonate 3 # calcium carbonate Average particle size / micron 3.98 1.64 0.48

[0036] According to the above raw material proportioning, the formula of the invention example 1 and the single filler (sample 2: 100% 1 # Calcium carbonate filler; sample 3: 100% 3 # Calcium carbonate filler) the same formula were carried out papermaking method sheet test. The performance comparison of the three sealing material samples is shown in Table 2.

[0037] Table 2

[0038]

[0039] As can be seen from Table 2,...

Embodiment 2

[0040] Embodiment 2: the weight ratio of each component in asbestos or non-asbestos fiber composite sealing material formula is:

[0041]

[0042] where the mixed inorganic filler consists of 50% of 1 # Talc powder, 30% of 2 # Talc, 14% of 1 # Kaolin and 6% of 2 # Kaolin graded. The average particle size of each filler used in gradation is shown in Table 3.

[0043] table 3

[0044] Numbering 1 # talcum powder 2 # talcum powder 1 # Kaolin 2 # Kaolin Average particle size / micron 8.01 3.22 1.23 0.31

[0045] According to the above raw material proportioning, the formula of the invention example 2 and the single filler (sample 5: 100% 1 # Talc filler; sample 6: 100% 2 # The same formulation of kaolin filler) was carried out papermaking method sheet test respectively. The performance comparison of the three sealing material samples is shown in Table 4.

[0046] Table 4

[0047]

[0048] As can be seen from Table 4, with the use ...

Embodiment 3

[0049] Embodiment 3: the weight ratio of each component in asbestos or non-asbestos fiber composite sealing material formula is:

[0050]

[0051] The mixed inorganic filler consists of 45% of 1 # Talc, 28% of 2 # Talc, 17% of 1 # Kaolin and 10% of 3 # Calcium carbonate graded. The average particle size of each filler used in gradation is shown in Table 5.

[0052] table 5

[0053] Numbering 1 # talcum powder 2 # talcum powder 1 # Kaolin 3 # calcium carbonate Average particle size / micron 8.01 3.22 1.23 0.48

[0054] According to the above raw material proportioning, the formula of the invention example 3 and the single filler (sample 8: 100% 2 # Talc filler; sample 9: 100%3 # Calcium carbonate filler) the same formula were carried out papermaking method sheet test. The performance comparison of the three sealing material samples is shown in Table 6.

[0055] Table 6

[0056]

[0057] As can be seen from Table 6, with the use ...

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Abstract

The invention relates to an asbestos fiber or non-asbestos fiber composite sealing material, in particular to a high-performance paper-making method material. The invention belongs to the crossing field of material science and paper-making technology. The fiber composite sealing material consists of asbestos fiber, non-asbestos fiber, latex, mixed inorganic filler and auxiliary aids, wherein the mixed inorganic filler is prepared by grading at least three and at most six fillers with different average particle sizes; and the average particle size of the higher grade of filler is 2.4 times of that of the adjacent lower grade of filler. As the invention accords with the most compact arrangement theory and the principle of different particle size grain grading is applied in the composition of the filler, the microporous material structure adopting compact arrangement can be obtained by using a little latex, the sealing property of the product and the important indexes such as mechanical strength and heat resistance can be greatly improved and the high-performance fiber composite sealing material can be obtained. By adopting filler grading, the paper machine papermaking performance of slurry can be improved.

Description

technical field [0001] The invention belongs to the intersecting field of material science and papermaking technology, and relates to an asbestos or non-asbestos fiber composite sealing material, in particular to a high-performance papermaking asbestos or non-asbestos fiber composite sealing material. Background technique [0002] Fiber composite sealing materials are mainly used to manufacture various sealing gaskets, and are widely used in the sealing of various vehicles, mechanical equipment and various pipeline joints. plays a key role. There are two types of fiber sealing materials: asbestos fiber products and non-asbestos fiber products. Inexpensive asbestos fibers were once the fiber of choice for sealing materials. However, with the development of science, the carcinogenic effect of asbestos fiber and the harm to human health have been widely recognized by people. Therefore, the use of asbestos has been banned in industrially developed countries. However, in Chi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/10C08L21/02C08K13/04C08K7/12C08L9/04C08L9/08
Inventor 庄金风李红羡羽佳文卓
Owner CHINA NAT PULP & PAPER RES INST CO LTD
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