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Non-asbestos fiber compound sealing material

A non-asbestos fiber, composite sealing technology, which is applied in the intersection of material science and papermaking technology, can solve the problems of unusable material comprehensive performance and poor sealing performance, and achieve the effect of comprehensive performance improvement, sealing performance improvement, and important performance improvement.

Inactive Publication Date: 2011-10-12
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 shortcoming of poor comprehensive performance of the material, especially poor sealing performance due to the inability to use low particle size fillers in the current papermaking fiber sealing material manufacturing technology, the present invention proposes a manufacturing technology of asbestos-free fiber composite sealing material

Method used

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  • Non-asbestos fiber compound sealing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: the weight ratio of each component in the non-asbestos fiber composite sealing material formula is:

[0031]

[0032] 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.

[0033] Table 1

[0034] Filling number

1 # calcium carbonate

2 # calcium carbonate

3 # calcium carbonate

Average particle size / micron

3.98

1.64

0.48

[0035] 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.

[0036] Table 2

[0037]

[0038] As can be see...

Embodiment 2

[0039] Embodiment 2: the weight ratio of each component in the non-asbestos fiber composite sealing material formula is:

[0040]

[0041] 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.

[0042] table 3

[0043] Numbering

1 # talcum powder

2 # talcum powder

1 # Kaolin

2 # Kaolin

Average particle size / micron

8.01

3.22

1.23

0.31

[0044] 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.

[0045] Table 4

[0046]

[0047] As can be seen from ...

Embodiment 3

[0048] Embodiment 3: the weight ratio of each component in the non-asbestos fiber composite sealing material formula is:

[0049]

[0050] 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.

[0051] table 5

[0052]

[0053] 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.

[0054] Table 6

[0055]

[0056] As can be seen from Table 6, with the use of 100% 2 # Compared with sample 8 with talcum powder filler, the sample of Invention Example 3 using graded mixed inorganic filler has similar water filtration speed, b...

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Abstract

The invention relates to a non-asbestos fiber compound sealing material, in particular to a high-performance paper-making method material, and belongs to the cross field of material science and paper-making technology. The non-asbestos fiber compound sealing material consists of non-asbestos fiber, rubber latex, mixed inorganic fillers and an auxiliary agent, wherein the mixed inorganic fillers are formed by the gradation of minimum two types, at most six types of fillers of different average grain sizes, and the average grain size of the bigger fillers is more than 2.5 times that of the adjacent smaller fillers. Because the closest packing theory is adopted in the invention and the fillers are formed by the gradation of the fillers of different average grain sizes, the close packing microporous material structure can be obtained while less rubber latex is consumed, various important indexes, such as the sealing property, mechanical strength and heat resistance, of the product are greatly improved, and the high-performance non-asbestos fiber compound sealing material is obtained. By the gradation of the fillers, the paper machine paper-making property of the pulp is improved.

Description

technical field [0001] The invention belongs to the intersecting field of material science and papermaking technology, and relates to an asbestos-free fiber composite sealing material, in particular to a high-performance non-asbestos fiber composite sealing material for papermaking. 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 gradually widely recognized by people. Therefore, the use of asbestos has been banned in industrially developed countries. In China, asbestos-free p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10
Inventor 庄金风李红羡羽佳文卓
Owner CHINA NAT PULP & PAPER RES INST CO LTD
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