Biodegradable Plastic Blend Flame Retardancy
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Solution Overview
Problem
Conventional plastics like PVC and PE are not biodegradable, contain harmful substances, and have poor compatibility with flame retardants, leading to reduced performance and high production costs in plastic ornaments.
Innovation Solution
A flame retardant and fully biodegradable plastic is developed using a blend of biodegradable plastics (PBS, PBAT, and PLA) with decabromodiphenyl ether and diantimony trioxide as flame retardants, combined with anti-oxidants, lubricants, and compatibility agents, processed through screw extrusion and injection molding to achieve desired properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional plastics (PVC, PE) are used for plastic ornaments, then the material has good processability and mechanical strength, but it is not biodegradable and releases toxic gases during incineration
Solution Approach 1:
The patent changes the chemical composition parameters of the plastic material by replacing conventional PVC/PE with biodegradable alternatives (PLA, PBS, PBAT) in specific ratios, transforming the material from non-biodegradable to fully biodegradable while maintaining ornament performance requirements
Solution Approach 2:
The patent creates a composite material system combining multiple biodegradable plastics (PLA, PBS, PBAT) with flame retardants and additives, where each component contributes specific properties to achieve both biodegradability and functional performance
2Object-affected harmful factors
If biodegradable plastics are used to replace conventional plastics, then environmental friendliness is improved, but flame retardant compatibility is poor and mechanical performance is significantly reduced
Solution Approach 1:
The patent optimizes the compositional parameters by adjusting the ratios of biodegradable plastics (PLA:PBAT:PBS=1:(1-4):(0-1)) and flame retardants (decabromodiphenyl ether:diantimony trioxide=1:(1-10)), finding the optimal balance point where both biodegradability and mechanical strength meet product requirements
Solution Approach 2:
The patent introduces compatibility agents as intermediary substances that mediate between the biodegradable plastic matrix and flame retardant additives, improving interfacial compatibility and preventing performance degradation from poor compatibility
3Reliability
If biodegradable plastics are blended with flame retardants, then flame retardancy is achieved, but the compatibility is poor and material performance is significantly reduced
Solution Approach 1:
The patent changes the compositional parameters by selecting specific flame retardant types (decabromodiphenyl ether and diantimony trioxide) and optimizing their ratios (1:(1-10)), achieving flame retardancy while maintaining composition stability through parameter optimization
Solution Approach 2:
The patent uses compatibility agents as intermediaries to bridge the biodegradable plastic and flame retardant components, improving their compatibility and preventing performance reduction from poor mixing or phase separation
4Ease of manufacture
If PVC material is pressed to prepare thin sheets for ornaments, then the production process is established, but sheet thickness control stability is poor and comprehensive cost is high
Solution Approach 1:
The patent changes the material parameters by replacing PVC with biodegradable plastic blends that have different rheological and processing characteristics, requiring optimization of extrusion and molding parameters to achieve both ease of manufacture and thickness precision
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 solution provides a biodegradable plastic that meets performance and cost requirements, achieving UL94 HB to V2 flame retardancy, high decomposition rates, and stable material properties suitable for decorative products, while minimizing environmental impact.
Implementation Method 1
a biodegradable plastic has characteristics of environmental protection and low ecological pressure
Implementation Method 2
the flame retardant consists of decabromodiphenyl ether and diantimony trioxide, and the weight ratio thereof is decabromodiphenyl ether:diantimony trioxide=1:(1-10)
Data Source
AI summary
Disclosed are a flame retardant and fully biodegradable plastic, a manufacturing method of the same, and an application of the same. A flame retardant and fully biodegradable plastic, prepared from following components with amount by weight: a biodegradable plastic: 70-95 parts; a flame retardant: 1-15 parts; an anti-oxidant: 0-1 part; a lubricant: 0-2 parts; a compatibility agent: 0-3 parts; and a color powder: 0-5 parts; wherein the biodegradable plastic consists of PBS, PBAT, and PLA, and the weight ratio thereof is PLA:PBAT:PBS=1:(1-4):(0-1); the flame retardant consists of decabromodiphenyl ether and diantimony trioxide, and the weight ratio thereof is decabromodiphenyl ether:diantimony trioxide=1:(1-10).