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Paste, resistor paste, methods for producing them, and variable resistor

A paste and resistor technology, applied in the manufacture of resistors, adjustable resistors, resistors, etc., can solve the problems of substrate materials such as ammonia resistance, poor storage stability, and environmental impact, and achieve good adhesion , good storage stability, resistance value change and the effect of low noise of sliding resistance

Inactive Publication Date: 2010-05-12
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since ammonia is generated due to the decomposition of the curing agent, there is not only a problem of environmental impact, but also the substrate material is limited to those with ammonia resistance
In addition, it depends on the amount of curing agent added in order to perform a curing reaction relatively violently, but as a paste, its storage stability is not good

Method used

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  • Paste, resistor paste, methods for producing them, and variable resistor
  • Paste, resistor paste, methods for producing them, and variable resistor
  • Paste, resistor paste, methods for producing them, and variable resistor

Examples

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Embodiment Construction

[0027] Hereinafter, embodiments of pastes, resistor pastes, their manufacturing methods, and varistors related to the present invention will be described with reference to the drawings.

[0028] First refer to Figure 1 ~ Figure 4 One embodiment of a variable resistor related to the present invention and its structure will be described.

[0029] This varistor includes a resistor substrate 10 made of a resin molded product, a cover layer 20 made of a resin molded product, and a shaft 30 made of a resin molded product including a slider 35 . The substrate 10 has a central hole 11, and the terminals 12, 13 are embedded therein. End portions 12 a of terminals 12 protrude from the side surfaces of substrate 10 , and central portions are exposed on the surface of substrate 10 as annular current collectors 12 b. End 13a of terminal 13 (refer to Figure 4 ) protrudes from the side of the substrate 10, and the other end 13b is exposed on the surface of the substrate 10.

[0030] Su...

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PUM

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Abstract

Disclosed is a variable resistor comprising a resistor substrate (10), a slider (35) having a contact piece which slides on a collector (12b) and a resistor (15) formed on the major surface of the resistor substrate (10), and a rotating shaft which rotates while holding the slider (35). The resistor (15) is made from a starting material containing a conductive filler, a novolac type phenol resin to which no curing agent is added, and a resol type phenol resin. The content of the resol type phenol resin is the same as or higher than that of the novolac type phenol resin.

Description

technical field [0001] The present invention relates to a paste, a resistor paste, a method for producing them, and a varistor having a resistor body made of a cured product of the resistor paste. Background technique [0002] In the past, phenolic resins such as soluble phenolic resins or novolac resins were used as binders for fillers to form pastes, and the pastes or their cured products were used as inks, adhesives, friction materials, sealing materials, and anti-corrosion materials. Charged materials, voltage ratio linear components, separators for fuel cells, etc. According to the application, the filler at this time can use conductive substances such as carbon and metal, non-conductive substances such as silica and alumina, and even organic substances such as vinyl chloride. The shape of the filler can be not only particle shape, but also whisker shape. substance. [0003] In addition, in the field of variable resistors, carbon paste for forming a carbon-based thick...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C10/30H01C17/06H01B1/24
CPCH01B1/24H01C10/32H01C17/06586H01C10/306
Inventor 小木曾美文
Owner MURATA MFG CO LTD
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