High weld mark strength enhanced polyamide material, preparation method thereof and application

Abstract

The invention discloses a high weld mark strength enhanced polyamide material, a preparation method thereof and an application. The high weld mark strength enhanced polyamide material comprises components: polyamide resins 40-82%, glass fibers 10-50%, polyamide copolymers 2-8%, nucleating agents 0.3-0.5% and an antioxidant 0.1-0.2%, wherein the components are melted and mixed uniformly to prepare the high weld mark strength enhanced polyamide material. The high weld mark strength enhanced polyamide material selects the polyamide copolymers and the efficient nucleating agents to improve weld mark strength of glass fiber reinforced polyamide materials, improves welding strength of the glass fiber reinforced polyamide materials under the situation that the own strength of the glass fiber reinforced polyamide materials is not affected, enlarges application field, and can be widely applied in the fields with high combination property demands for the glass fiber reinforced polyamide materials such as vehicles, architectural furniture and electric tools and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polyamide material with high weld line strength enhancement and its preparation method and application. Background technique [0002] Polyamide materials are the most widely used and most used general-purpose engineering plastics among engineering plastic materials. Widely used in industries such as automobiles, construction, electronic appliances and home appliances. After polyamide resin is reinforced with glass fiber, its strength, rigidity and impact strength can be significantly improved, and its application range can be broadened. However, in the application process, it is often found that the position of the weld line of the reinforced polyamide molded part often becomes the damage initiation point of the part. For many large or complex structural parts, the generation of weld marks is unavoidable. Although some of these weld marks are even diffic...

AI Technical Summary

Problems solved by technology

This patent application has a high requirement on the haze value of the resin used (≤50μg / g), which may lead to difficulties in selecting resin materials. In addition, adding too much low molecular weight additives will have a negative effect on improving the strength of the weld line

[0005] The above patent applications allow people to understand the great significance of high weld line strength to modified plastics in practical applications, but there are still cases of low weld line strength in practical applications, which limits the application of materials

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