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Molding material for welding

A molding material, acrylic technology, applied in the field of molding materials for welding, can solve the problems of luminance reduction and inability to obtain luminance, achieve excellent glossy surface, and improve the effect of poor appearance

Active Publication Date: 2008-11-12
大科能宇菱通株式会社
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that the luminance decreases due to fine unevenness on the surface of the molded product if the undercoat is not applied, and it is currently impossible to obtain good luminance without the undercoat.

Method used

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  • Molding material for welding

Examples

Experimental program
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Effect test

Embodiment

[0157] Hereinafter, the present invention will be specifically described with examples, but the present invention is by no means limited to these examples. It should be noted that, unless otherwise specified, the parts and % in the examples are based on mass.

[0158] 1. Evaluation method

[0159] Various evaluation methods used in this example are as follows.

[0160] (1) Melt flow rate

[0161] Measurement was performed based on ASTM-D1238 (240° C., 10 kg). The unit is g / 10 minutes.

[0162] (2) Charpy impact strength

[0163] Measured based on ISO179 (normal temperature). The unit is kJ / m 2 .

[0164] (3) Load deflection temperature

[0165] The measurement is based on ISO75 (under load), and the unit is °C.

[0166] (4) hot plate weldability

[0167] The pellets composed of molding materials are put into a molding machine (model "IS-25EP", manufactured by Toshiba Machine Co., Ltd.), melted at a temperature of 220-250°C, and molded into a hot plate welding with a ...

manufacture example 1

[0208] Production example 1 (manufacture of acrylic rubber reinforced vinyl resin [A1-1])

[0209] The latex was prepared by two-step polymerization.

[0210] The first process is to add 10.0 parts of n-butyl acrylate, 0.02 parts of allyl methacrylate, 1.0 parts of sodium dodecylbenzenesulfonate to the reactor equipped with reflux cooler, stirring blade, thermometer and temperature regulating device. 0.003 parts of cumene hydroperoxide, 0.004 parts of sodium edetate, 0.003 parts of ferrous sulfate, 0.05 parts of sodium formaldehyde sulfoxylate, and 180 parts of ion-exchanged water. While stirring, the mixture was heated. Then, the temperature of the reaction system was set at 60° C. to perform polymerization for 80 minutes. Next, keeping the temperature of the reaction system at 60°C, a mixture consisting of 25.0 parts of n-butyl acrylate, 0.05 parts of allyl methacrylate and 0.006 parts of cumene hydroperoxide was continuously added within 90 minutes to carry out polymerizat...

manufacture example 2

[0215] Production example 2 (manufacture of acrylic rubber reinforced vinyl resin [A1-2])

[0216] The latex was prepared by two-step polymerization.

[0217] The first process is to add 10.0 parts of n-butyl acrylate, 0.005 parts of allyl methacrylate, 1.0 parts of sodium dodecylbenzenesulfonate into the reactor equipped with reflux cooler, stirring blade, thermometer and temperature adjustment device. 0.003 parts of cumene hydroperoxide, 0.004 parts of sodium edetate, 0.003 parts of ferrous sulfate, 0.05 parts of sodium formaldehyde sulfoxylate, and 180 parts of ion-exchanged water. While stirring, the mixture was heated. Then, the temperature of the reaction system was set at 60° C. to perform polymerization for 80 minutes. Next, keeping the temperature of the reaction system at 60°C, a mixture consisting of 25.0 parts of n-butyl acrylate, 0.013 parts of allyl methacrylate and 0.006 parts of cumene hydroperoxide was continuously added within 90 minutes to perform polymeriz...

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PUM

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Abstract

A molding material for welding which, when used for bonding resin parts to each other by a welding method such as vibration welding or hot plate welding, can be prevented from developing a (string) burr or from showing stringiness or the like between the welding part of a hot die, e.g., a hot plate, and a housing-constituting material. The molding material can hence diminish appearance failures. The molding material comprises either a rubber-reinforced resin obtained by polymerizing vinyl monomers comprising an aromatic vinyl compound and a vinyl cyanide compound in the presence of an acrylicrubbery polymer having a gel content less than 70% or a mixture of the rubber-reinforced resin and a (co)polymer of a vinyl monomer. The content of the acrylic rubbery polymer in the molding materialis 5-40 mass% based on the whole molding material.

Description

technical field [0001] The present invention relates to a molding material for welding, and more specifically, to molding for welding suitable for welding parts made of the molding material, and welding of parts made of the molding material and parts made of other molding materials Material. Background technique [0002] Conventionally, housings and containers (including hollow products such as fuel tanks) used in a wide range of fields such as daily miscellaneous goods, vehicle parts, electrical parts, electronic parts, and mechanical parts have been welded by vibration welding, hot plate welding, laser welding, etc. The method is to weld the molded product formed by two divisions in advance to achieve integration and manufacture. In addition, meters (measuring instruments) for vehicles and measuring equipment are manufactured by integrating a meter box with a measuring device inside and a cover made of transparent resin by the above-mentioned welding method or the like. ...

Claims

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Application Information

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IPC IPC(8): C08L51/04C08F265/06
Inventor 前田征希山田刚
Owner 大科能宇菱通株式会社
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