Insulated Wire Resin Composition Flame Retardant Elongation
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Solution Overview
Problem
Conventional insulating materials like PVC struggle to provide flame retardant and abrasion resistance while meeting the demand for lighter and thinner wires, and polyester resins face issues with crystallization affecting tensile elongation properties during manufacturing and heat treatment.
Innovation Solution
A resin composition for insulated wires comprising a polyester resin, a non-bromine flame retardant agent, a polyorganosiloxane core-graft copolymer, an inorganic porous filler, and a hydrolysis resistance modifier, which maintains heat resistance and elongation properties, addressing the limitations of crystalline polymers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyester resin is used as insulating material, then flame retardant property and heat resistance are improved, but tensile elongation property deteriorates due to crystallization during manufacturing and heat treatment
Solution Approach 1:
The patent uses a composite material system consisting of polyester resin combined with ethylene-propylene-diene monomer (EPDM) rubber and silane-modified polyester resin. This composite structure allows the material to simultaneously achieve flame retardancy from the polyester resin and maintained elongation properties from the rubber phase, resolving the contradiction between reliability and strength
Solution Approach 2:
The patent modifies the chemical parameters of the polyester resin by introducing silane modification and controlling the crystallization behavior through specific additive combinations. This parameter change allows the resin to maintain flame retardant properties while suppressing excessive crystallization that would otherwise deteriorate tensile elongation
2Weight of moving object
If wire thickness is reduced to meet weight requirements, then weight is reduced, but flame retardant property and abrasion resistance become insufficient
Solution Approach 1:
The composite material system with EPDM rubber and silane-modified polyester resin provides enhanced flame retardant properties and abrasion resistance even in thinner wire configurations. The synergistic interaction between components allows maintaining required safety properties while reducing overall wire weight for energy conservation
Data Source
AI summary
An insulated wire uses a resin composition. The insulated wire includes a conductor; and an insulating material provided on the conductor, the insulating material includes a polyester resin in 100 parts by weight, a non-bromine flame retardant agent in 1-30 parts by weight, a polyorganosiloxane core-graft copolymer in 1-50 parts by weight, an inorganic porous filler in 0.1-50 parts by weight; and a hydrolysis resistance modifier in 0.05-10 parts by weight.