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 s

Method used

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  • Fiber packing preparation method
  • Fiber packing preparation method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1, such as figure 1 As shown, the preparation method of ramie packing in this embodiment includes the following steps:

[0028] ①The ramie fiber thread is braided on the braiding machine while being impregnated in the first impregnating agent, which increases the weight of the fiber thread by 35%;

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

[0030] ③The second impregnant is used for the second impregnation in the impregnation tank, and the impregnation time is 15 minutes;

[0031] ④Finally, forming, finished reel,

[0032] The first impregnant includes the following components and their weight percentages: 80% polytetrafluoroethylene, 15% mineral powder, 1% demulsifier, 1% preservative, and 3% water. The second impregnant includes the following components and their Weight percentage: 50% paraffin oil, 50% petrolatum.

[0033] Before weaving, the fiber thread accounting for 50% by weight of the fiber thread is immersed in the second...

Example Embodiment

[0041] Embodiment 2, the preparation method of flax packing in this embodiment, includes the following steps:

[0042] ①The flax fiber thread is woven on the knitting machine while being impregnated in the first impregnating agent to increase the weight of the fiber thread by 30%;

[0043] ② Take it out after immersion and bake it in an oven at 110℃ for 4-6 hours;

[0044] ③The second impregnating agent is used for the second impregnation in the impregnation tank, and the impregnation time is 20 minutes;

[0045] ④Finally, forming, reeling,

[0046] The first impregnant includes the following components and their weight percentages: 75% polytetrafluoroethylene, 19% mineral powder, 1.5% anti-emulsifier, 1.1% preservative, and 3.4% water. The second impregnant includes the following components and their Weight percentage: 60% paraffin oil, 40% petrolatum.

[0047] Before weaving, the fiber thread accounted for 30% of the weight of the fiber thread is immersed in the second impregnant, and...

Example Embodiment

[0049] Embodiment 3, the preparation method of cotton yarn packing in this embodiment, includes the following steps:

[0050] ①The cotton yarn fiber thread is knitted on the knitting machine while being impregnated in the first impregnating agent to increase the weight of the fiber thread by 40;

[0051] ② Take it out after immersion and bake it in an oven at 90℃ for 4-6 hours;

[0052] ③The second impregnant is used for the second impregnation in the impregnation tank, and the impregnation time is 10 minutes;

[0053] ④Finally, forming, reeling,

[0054] The first impregnant includes the following components and their weight percentages: 85% polytetrafluoroethylene, 11% mineral powder, 0.5% demulsifier, 0.9% preservative, and 2.6% water. The second impregnant includes the following components and Weight percentage: 40% paraffin oil, 60% petrolatum.

[0055] Before weaving, 70% of the fiber thread by weight is immersed in the second impregnant, and the immersion time is 15 minutes.

[00...

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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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