Unlock instant, AI-driven research and patent intelligence for your innovation.

Coating agent for oil seal

A coating agent and oil sealing technology, which is applied in coatings, devices for coating liquids on surfaces, wax coatings, etc., can solve the problem of difficulty in achieving a balance between the strength of the coating agent and its dispersibility, reduced strength, and reduced wear resistance. and other problems, to achieve the effect of reducing the coefficient of kinetic friction, increasing the roughness, and achieving low torque.

Active Publication Date: 2022-03-04
NOK CORP
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Here, a dispersant is added to improve the dispersibility of PTFE, but if the amount added is large, the strength of the film formed by the coating agent will decrease.
On the other hand, in the case of using fillers other than PTFE, a decrease in wear resistance was observed
Therefore, it is difficult to achieve a balance between the strength of the coating agent and its dispersibility

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coating agent for oil seal
  • Coating agent for oil seal
  • Coating agent for oil seal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]

[0041]

[0042] The above components are mixed, and the coating agent solution composed of the lactyl acetate solution is sprayed on a thickness of 10 μm to 30 μm at a vulcanized rubber having a thickness of 2 mm. After 10 hours of heat treatment at 200 ° C, the surface is rough. Degree, contact angle, measurement or evaluation of the dynamic friction coefficient and wear resistance in the oil. Further, the dispersion of the coating liquid was also carried out, and the evaluation of re-dispersibility was carried out. It should be noted that the respective parts by weight are represented by solution, and the actual weight of each component is shown (the following examples and comparative examples) are shown (the following examples).

[0043] Dispersibility: After preparing the coating liquid, it was visually confirmed that the settlement rate of silicone resin particles or fluororesin particles will be observed after 10 minutes, and the evaluation of settlement is ○, w...

Embodiment 2

[0056] In Example 1, the MOMENTIVE product XC99-A8808 (0.7 μm) of Momentive Co., Ltd. (0.7 μm) was used as the polymethylene semi-silicone particles.

Embodiment 3

[0058] In Example 1, a Momentive product Tosper1 (30 parts by weight) (10 μm) was used as the polymethylene semi-silicone particle.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The present invention provides a coating agent for oil seals, which is prepared in the form of an organic solvent solution containing 10-90 parts by weight of a filler and 10-40 parts by weight of a wax with respect to 100 parts by weight of an isocyanate group-containing 1, 2-polybutadiene, and which is characterized in that the amount of the filler is 10-90 parts by weight and the amount of the wax is 10-40 parts by weight with respect to 100 parts by weight of the isocyanate group-containing 1, 2-polybutadiene, and the amount of the wax is 10-40 parts by weight with respect to 100 parts by weight of the isocyanate group-containing 1, 2-polybutadiene. Silicone resin particles having a particle diameter of 0.5 [mu] m to 10 [mu] m and fluororesin particles having a particle diameter of 0.1 [mu] m to 2 [mu] m are used at a ratio of 20% by weight to 80% by weight in the total amount of the filler. The coating agent for the oil seal can maintain good dispersibility of the coating agent, can exert excellent sealing performance originally possessed by the oil seal, and can realize low torque performance.

Description

Technical field [0001] The present invention relates to a coating agent for oil seal. In more detail, a coating agent having excellent dispersibility of a filler is relatively dispersible. Background technique [0002] In the fields of automobiles, industrial machinery, oil seals are widely used as important mechanical components. The oil seal can be used for motion use or sliding applications, but at this time, the sealing oil or sealing material is deteriorated due to the frictional resistance, and the energy loss of the apparatus is large. [0003] In order to reduce the torque of the oil seal, it is preferable to maintain the oil in the sliding surface, so it is necessary to increase the wettability of the oil by increasing the roughness of the sliding surface. However, for the conventional compound of fluorine resin particles having a low particle diameter of from about 0.1 μm to 10 μm for the coating agent as a filler, since the surface of the fluorine can be high, it is di...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D115/00C09D191/06C09D183/04C09D127/18C09D7/65F16J15/3284
CPCC09D115/00C09D7/65F16J15/3284C08L91/06C08L83/04C08L27/18C09D191/06F16J15/324C09D119/006C08J7/0427C08J7/046C09D5/00C09D7/45C09D7/20C09D7/68C09D7/69B05D2503/00B05D2506/15B05D2518/10B05D2401/10B05D2501/10B05D7/02B05D5/083B05D2602/00C08J2307/00C08J2409/00C08J2427/18C08J2483/06C08J2491/06C08L91/08C09D109/00
Inventor 安永奈津美
Owner NOK CORP