Polyamide Resin High Withstand Voltage Insulation
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Solution Overview
Problem
There is a demand for a polyamide resin material with improved insulation properties under high withstand voltage and mechanical strength, particularly in automotive and electronic parts applications where environmental conditions are severe.
Innovation Solution
A high withstand voltage insulating material is developed using a polyamide resin with specific structural units containing benzene, naphthalene, or cyclohexane rings, with a content ratio and bond configurations optimized to enhance mechanical strength and insulation properties, including a stabilizer to improve tracking resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If polyamide resin is used for engine peripheral parts, then mechanical properties and thermal resistance are improved, but insulation properties deteriorate under high withstand voltage
Solution Approach 1:
The invention changes the chemical structure parameters of the polyamide resin by incorporating specific ring structures (benzene, naphthalene, or cyclohexane rings) at controlled content ratios (10-60 mass%). This structural modification allows the resin to simultaneously achieve high mechanical strength and excellent insulation properties under high withstand voltage, resolving the contradiction between mechanical performance and electrical insulation.
Solution Approach 2:
The invention creates a composite polyamide resin system by combining different structural units containing ring structures with specific bond configurations (B and C values). This composite approach integrates the advantages of different ring structures to achieve both mechanical strength and insulation properties that neither component could provide alone.
2Weight of moving object
If polyamide resin is used for electric and electronic parts, then weight reduction and space saving are achieved, but insulation properties under high withstand voltage are insufficient
Solution Approach 1:
The invention modifies the molecular structure parameters of the polyamide resin by controlling the content ratio of ring structures (10-60 mass%) and the bond configurations (B and C values). This enables the resin to maintain lightweight characteristics while achieving superior insulation properties under high withstand voltage, suitable for electric and electronic applications.
3Strength
If polyamide resin is used in severe environmental conditions, then mechanical properties are maintained, but surface appearance and insulation properties deteriorate under high temperature and high humidity
Solution Approach 1:
The invention develops a composite polyamide resin system incorporating multiple ring structures with specific bond configurations. This composite structure provides resistance to high temperature and high humidity environments while maintaining mechanical properties, surface appearance, and insulation properties that would otherwise deteriorate in severe environmental conditions.
Data Source
Figure 1
AI summary
Provided are an insulating material and a high withstand voltage insulating molded article. A high withstand voltage insulating material includes a polyamide resin (A) containing a structural unit containing a ring (a) selected from the group consisting of a benzene ring, a naphthalene ring, and a cyclohexane ring, a content ratio of the ring (a) on a molecular weight basis in the polyamide resin (A) is from 10 to 60 mass%, and the polyamide resin (A) satisfies Formula (A): 1.0≤B/A×C×100≤5.0 where A represents the content ratio (mass%) of the ring (a) on a molecular weight basis in the polyamide resin (A), B represents an average value of the number of bonds between the ring (a) and an amide bond closest to the ring (a) in each structural unit, and C represents an average value of the number of bonds between positions where a group connected from the amide bond is bonded to the ring (a) in each structural unit.