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贏創(chuàng)和DELO開發(fā)出耐高溫塑料粘接用的膠黏劑體系

來源:林中祥膠粘劑技術(shù)信息網(wǎng)2014年10月28日

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Evonik & DELO Develop an Adhesive System to Bond High-temperature Resistant Thermoplastics


The bonding strength of VESTAKEEP PEEK (polyetheretherketone) L4000G from Evonik Industries has been tested to withstand strict operating environmental conditions. Together with DELO, a manufacturer of industrial adhesives, they have successfully developed an adhesive system to bond with high temperature resistant thermoplastics such as PEEK with other non-compatible materials.

In general, PEEK possesses very low surface energy which leads to poor wettability characteristics. As a result, the surface is extremely resilient to chemical reaction and this makes bonding to PEEK a very difficult process.

 However, recent test results demonstrated that VESTAKEEP PEEK L4000G can be bonded to other materials using an adhesive based on a heat-curing epoxy developed by DELO.

VESTAKEEP PEEK L400G offers the strongest bonding strength with or without pre-plasma treatment.

DELOMONOPOX AD066, an adhesive designed to bond plastics, developed by DELO can bond VESTAKEEP PEEK L4000G to other surfaces or components. To measure the bonding strength between VESTAKEEPPEEK L4000G and the bonded component, the assembly is subjected to a compressive shear strength test measured after 85 °C storage temperature with 85 % humidity.

When the component surfaces were first pre-treated under atmospheric pressure plasma conditions, the measured compressive shear strength between VESTAKEEPPEEK L4000G and the test samples showed a measured value of up to 40 MPa.

In a separate test in which the component surfaces were not pre-treated with plasma, the measured compressive shear strength attained a value of around 20 MPa. Although the value is lowered compared to the value measured under plasma treated condition, the benefit here simplifies the production process and its overall manufacturing cost.

In both cases, the bonding strength of the VESTAKEEPPEEK L4000G test samples - bonded with DELOMONOPOX AD066 - fulfilled the requirements of the industries for plastic bonded systems.

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