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Fiber packing preparation method

A packing and fiber technology, applied in the field of packing preparation, can solve the problems of increasing leakage, wear of pump shaft, damage of sealing surface, etc., and achieve the effects of improving lubrication, improving service life and improving compactness.

Active Publication Date: 2012-09-19
慈溪博格曼密封材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because a large friction coefficient will generate a large friction force, which will cause the pump shaft to wear, thereby destroying the sealing surface and causing leakage
At the same time, a large amount of friction heat is generated, and the sulfur and chloride ions in the material will corrode and damage the sealing surface under the action of temperature, thereby increasing the leakage, which greatly affects the sealing performance of the packing and the service life of the equipment

Method used

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Examples

Experimental program
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Embodiment 1

[0027] Example 1, such as figure 1 Shown, the preparation method of the ramie packing in the present embodiment may further comprise the steps:

[0028] ① The ramie fiber thread is impregnated on the first impregnating agent while weaving on the weaving machine, so that the weight of the fiber thread is increased by 35%;

[0029] ②Take it out after dipping, and bake it in an oven at 100°C for 4~6 hours;

[0030] ③Then impregnate twice with the second impregnating agent in the impregnating tank, and the impregnating time is 15 minutes;

[0031] ④Finally, forming, reel finished product,

[0032] The first impregnating agent comprises the following components and their percentages by weight: polytetrafluoroethylene 80%, mineral powder 15%, anti-emulsifier 1%, preservative 1%, water 3%, and the second impregnating agent comprises the following components and its Percentage by weight: paraffin oil 50%, vaseline 50%.

[0033] Before weaving, the fiber yarns accounted for 50% by ...

Embodiment 2

[0041] Embodiment 2, the preparation method of the flax packing in the present embodiment, comprises the steps:

[0042] ① The flax fiber thread is impregnated in the first impregnating agent while weaving on the weaving machine, so that the weight of the fiber thread is increased by 30%;

[0043] ②Take it out after dipping, and bake it in an oven at 110°C for 4~6 hours;

[0044] ③Then impregnate twice with the second impregnating agent in the impregnation tank, and the impregnation time is 20 minutes;

[0045] ④Finally, molding, reel,

[0046] The first impregnating agent comprises the following components and their percentages by weight: polytetrafluoroethylene 75%, mineral powder 19%, anti-emulsifier 1.5%, preservative 1.1%, water 3.4%, and the second impregnating agent comprises the following components and its Percentage by weight: paraffin oil 60%, vaseline 40%.

[0047] Before weaving, the fiber yarns accounted for 30% by weight of the fiber yarns were soaked in the ...

Embodiment 3

[0049] Embodiment 3, the preparation method of the cotton yarn packing in the present embodiment, comprises the steps:

[0050] ① The cotton yarn fiber thread is impregnated on the first impregnating agent while weaving on the knitting machine, so that the fiber thread is increased by 40%;

[0051] ②Take it out after dipping, and bake it in an oven at 90°C for 4~6 hours;

[0052] ③Then impregnate twice with the second impregnating agent in the impregnation tank, and the impregnation time is 10 minutes;

[0053] ④Finally, molding, reel,

[0054] The first impregnating agent comprises the following components and their percentages by weight: polytetrafluoroethylene 85%, mineral powder 11%, anti-emulsifier 0.5%, preservative 0.9%, water 2.6%, and the second impregnating agent comprises the following components and its Percentage by weight: paraffin oil 40%, vaseline 60%.

[0055] Before weaving, the fiber yarns accounted for 70% by weight of the fiber yarns were soaked in the se...

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Abstract

A fiber packing preparation method is characterized by comprising the following steps: firstly, on a knitting machine, primary impregnation for fiber threads is preformed through first impregnant on weaving edges, so that the weight of the fiber threads gains 30% to 40%; secondly, the fiber threads after impregnation are taken out, and dried for 4 to 6 hours at the temperature of 90 to 110 DEG C; thirdly, the secondary impregnation is performed through adopting second impregnant for 10 to 20 minutes, and the second impregnant includes paraffin oil; and finally, the forming is carried. Compared with the prior art, the fiber packing preparation method provided by the invention has the advantages as follows: the impregnant is divided into two parts for the twice independent impregnation from start to finish, so that the impregnation is completer, and the improvement on the inner compactness of the packing is facilitated; meanwhile, the paraffin oil is separated out from the lower part at the ordinary temperature, and can be unceasingly separated out for lubrication when the temperature rise reaches to a certain extent during the practical application of the packing, so that the separated out paraffin oil is increased unceasingly to improve the lubrication under the condition that plenty of friction heat is generated, and the service life of the packing is greatly prolonged.

Description

technical field [0001] The invention relates to a preparation method of packing, which can be used in application fields such as pumps and valves. Background technique [0002] Packing packing seals are widely used in static and dynamic sealing. When packing packing is used correctly, the sealing principle of packing packing will not be changed basically. At this time, the sealing performance of packing packing mainly depends on the sealing performance of packing packing. The material composition of the root packing requires that the packing should not only have the good compression rate, rebound rate and stress relaxation rate of the static sealing material, but also have the excellent toughness, tensile strength, recovery and other properties of the dynamic sealing material. Resistance, wear resistance, self-lubrication, thermal conductivity, anti-corrosion and other properties, so materials and material properties have always been the focus of research in the field of sea...

Claims

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Application Information

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IPC IPC(8): F16J15/00D06M15/256D06M13/02D06M11/79D06M13/188D06M13/203D06M13/292D06M101/06
Inventor 杨朝一胡建忠
Owner 慈溪博格曼密封材料有限公司
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