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Sealing agent for screw member and screw member obtained using same

A sealant and component technology, applied in the direction of connecting components, threaded fasteners, screws, etc., can solve problems such as poor operating efficiency

Inactive Publication Date: 2021-07-23
THREE BOND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the device involved in this document can only cover one screwed part by switching ON-OFF of a switch for one device, and the installation work of the screwed parts must be carried out continuously, so the operation efficiency is poor, and there is a problem in terms of productivity. question

Method used

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  • Sealing agent for screw member and screw member obtained using same
  • Sealing agent for screw member and screw member obtained using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0133] Examples 1-3 fixed various addition amounts, and changed the kind of (B) component. In Examples 4 and 5, the addition amount of (C) component was changed with respect to the compounding of Example 1. These were found to be excellent in the evaluation items of sagging, adhesiveness, and adhesiveness at the time of water adhesion. Among them, in Example 1 in which a material having a glass transition temperature Tg of 16°C was used, the maximum resistance moment when the nut was tightened was 3.0 N·m in both the adhesiveness and the adhesiveness evaluation at the time of water adhesion. The following and lower, become good results.

[0134] In addition, it can be seen from Example 4 that when the addition amount of the active ingredient of the component (C) is 0.205 parts by mass relative to 100 parts by mass of the solid content of the component (B), drooping does not occur, but the sealing agent flows from the screwed part to the The front end of the screw moves. Fro...

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Abstract

The purpose of the present invention is to provide a sealing agent for a screw member, which does not undergo dripping in a period between application to a bolt and drying, and in which a resin exhibits excellent adhesive properties and does not peel from an interface when a nut is tightened in a state in which water adheres to a processing bolt after drying. The present invention relates to a sealing agent for a screw member, which contains a component (A), a component (B) and a component (C), and in which the content of active ingredient in component (C) is 0.15-5.00 parts by mass relative to 100 parts by mass of solid content in component (B). Component (A) is a filler, component (B) is a self-crosslinking aqueous emulsion containing a (meth)acrylic-styrene copolymer having a glass transition temperature Tg of 0 DEG C or higher, and component (C) is a non-urethane-based non-ionic thickening agent.

Description

technical field [0001] The present invention relates to a sealant for screwed parts and a screwed part using the same. Background technique [0002] Conventionally, a sealing tape has been used as a sealant for sealing screw joints such as pipe joints. The purpose of using the sealing tape for the screw joint is to prevent the leakage of liquid, gas, etc. by filling the gap generated in the connecting portion of the piping. The sealing tape is mainly made of fluororesin, which is easy to adhere to the screw joint due to its flexibility. When screwed into the machine material, the fluororesin deforms softly and can fill the gap with the machine material, so it is used as a sealant. As a method of covering the threaded member with the seal tape, the seal tape is wound by using a winding device or manually. The apparatus described in Japanese Patent Application Laid-Open No. 2006-052296 , which is such a seal tape winding device, is provided with a screw member and a seal tap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/10F16B39/22
CPCF16B39/22C09K3/1006F16B33/004C09D125/14C09D133/06C08L27/18C08L61/24C08L61/28C08L2205/18C08L2205/22C08L2312/00
Inventor 丹羽真之鹫野江里佳
Owner THREE BOND CO LTD
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