Cycloolefin Polymerizable Composition With Flame Retardant Fillers
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Solution Overview
Problem
Existing polymerizable compositions based on cycloolefin resins lack flame retardant properties, which are not suitable for applications requiring flame resistance, especially in environments where high heat resistance, low water-absorbing properties, and low dielectric constant are desired.
Innovation Solution
A polymerizable composition comprising a cycloolefin monomer, a metathesis polymerization catalyst, and a combination of specific flame retardants and inorganic fillers, such as phosphorus-based, nitrogen-based, and nitrogen/phosphorus-based flame retardants, along with inorganic fillers like scale-like or spherical particles, to enhance flame resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cycloolefin-based resin is used for high heat resistance and low dielectric constant, then heat resistance and electrical properties are improved, but flame resistant properties are insufficient
Solution Approach 1:
The patent applies composite materials by combining cycloolefin-based resin with specific flame retardants (phosphorus-based, nitrogen-based, or their combinations) and inorganic fillers. This creates a multi-component composition that achieves both the inherent heat resistance and low dielectric constant of cycloolefin resin while adding flame resistant properties through the synergistic combination of flame retardant additives.
2Object-affected harmful factors
If flame retardants are added to achieve flame resistance, then flame resistant properties are improved, but the composition complexity increases
Solution Approach 1:
The patent applies parameter changes by precisely controlling the content ranges of flame retardants (0.1-10 wt% phosphorus-based, 0.1-10 wt% nitrogen-based) and inorganic fillers (5-50 wt%). By optimizing these compositional parameters, the patent achieves effective flame resistance while minimizing composition complexity and maintaining processing feasibility.
3Object-affected harmful factors
If inorganic filler is added to enhance flame resistance, then flame resistant properties are improved, but the manufacturing precision may be affected
Solution Approach 1:
The patent applies local quality by specifying that inorganic fillers should have a particle size distribution where fine particles (0.1-10 μm) constitute 20-80% of the total. This creates a hierarchical structure where fine particles fill gaps between larger particles, improving dispersion and reducing voids, thereby maintaining manufacturing precision while enhancing flame resistance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition results in a molded body with excellent flame-resistant properties, maintaining high heat resistance, low water-absorbing properties, and low dielectric constant.
Implementation Method 1
a metathesis polymerization catalyst
Implementation Method 2
at least one flame retardant selected from the group consisting of phosphorus-based flame retardants, phosphorus and nitrogen-based flame retardants, and nitrogen-based flame retardants, and an inorganic filler
Data Source
AI summary
Provided is a polymerizable composition that can give a molded body having excellent flame resistant properties. Provided is a polymerizable composition comprising a cycloolefin monomer, a metathesis polymerization catalyst, at least one flame retardant selected from phosphorus-based flame retardant, phosphorus and nitrogen-based flame retardant, and nitrogen-based flame retardant, and an inorganic filler.