Polymeric Antistatic Resin Composition for Contamination-Free Trays
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Solution Overview
Problem
Conductive filler-containing resin compositions for electronic product trays suffer from issues like contamination, poor heat resistance, and unsatisfactory surface electrical resistance, leading to degradation of electronic product characteristics and difficulties in achieving desired colors for tray discrimination.
Innovation Solution
A resin composition comprising a polyphenylene ether-based resin, a styrene-based resin, and a polymeric antistatic agent, with a specific blending ratio and absence of conductive fillers, allowing for high heat distortion temperature, low water absorption, and surface electrical resistance within acceptable limits, enabling cleanable and colorful trays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive filler (carbon black, carbon fiber, metal powder) is used in the resin composition, then surface electrical resistance is reduced and antistatic properties are improved, but contamination occurs due to rubbing and friction, and the filler may transfer to electronic products
Solution Approach 1:
The patent changes the type of antistatic agent from conductive filler to polymeric antistatic agent, fundamentally altering the material parameter to eliminate contamination while maintaining antistatic properties. This parameter change resolves the contradiction by selecting a material that does not undergo friction-induced degradation or transfer.
Solution Approach 2:
The polymeric antistatic agent acts as a sacrificial component that can be replenished through cleaning processes. Unlike conductive fillers that permanently contaminate, the polymeric agent can be removed and reapplied, effectively treating it as a consumable that maintains function without permanent contamination.
2Object-generated harmful factors
If polymeric antistatic agent is used in the resin composition, then contamination is reduced and color variety is achieved, but heat resistance property deteriorates and heat distortion temperature decreases
Solution Approach 1:
The patent creates a composite resin composition combining polyphenylene ether base resin with polymeric antistatic agent and specific additives. This composite structure allows the polymeric antistatic agent to provide contamination-free antistatic properties while the base resin and additives compensate for heat resistance losses, achieving a balance between the contradictory requirements.
Solution Approach 2:
The patent adjusts the molecular weight and chemical structure parameters of the polymeric antistatic agent to optimize the balance between antistatic performance and heat resistance. By carefully selecting parameters within specific ranges, the composition achieves acceptable heat distortion temperature while maintaining contamination-free operation.
3Reliability
If surfactant is used as antistatic agent, then antistatic effect is achieved, but water absorption property deteriorates and heat resistance property decreases
Solution Approach 1:
The patent changes from surfactant-based antistatic agents to polymeric antistatic agents, fundamentally altering the chemical parameter class. This change resolves the contradiction by selecting a material that does not inherently increase water absorption while maintaining antistatic effectiveness.
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 trays with improved heat resistance, reduced contamination, and enhanced surface electrical properties, enabling easy classification and handling of electronic products by allowing the trays to be made in various colors, thus addressing the limitations of existing compositions.
Implementation Method 1
there is a problem of an obstruction because of discharge
Implementation Method 2
the SAA bleed out a lot. A problem of contamination of the electronic products was serious
Data Source
AI summary
A resin composition may contain an A resin, a B resin, a C resin and a polymer antistatic agent. The A resin may be a polyphenylene ether resin. The B resin may be a styrene resin. The C resin may be one or more of resins selected from carbonate resins, acrylic resins, amide resins, butylene terephthalate resins, and ethylene terephthalate resins. The polymer antistatic agent may be 5-30 parts by mass per 100 parts by mass of the A resin. The B resin may be 5-40 parts by mass per 100 parts by mass of the A resin. The C resin may be 30-240 parts by mass per 100 parts by mass of the B resin.