Material Surface Nanoporous Structure for Plastic Injection Bonding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current integrated composite molding technologies face challenges in forming nanoporous structures on material surfaces, leading to inadequate bonding between plastics and materials, characterized by weak adhesion and structural inaccuracies.
Innovation Solution
A surface treatment method involving immersion in a first inorganic acid solution and a fluoride acidic solution to create nanopores, facilitating strong permeability and accelerated pitting corrosion, resulting in a material with a nanoporous structure that achieves tight bonding with plastic injection molding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If heterogeneous material gluing technology is used to bond plastic to material surface, then bonding can be achieved, but bonding strength is insufficient and glue overflowing occurs
Solution Approach 1:
The patent applies porous material principle by creating nanoporous structures on the material surface through chemical etching. These nanopores increase the surface area and provide mechanical interlocking for the plastic, enabling strong bonding without glue. The porous structure allows plastic melt to penetrate and form a mechanically interlocked composite structure.
Solution Approach 2:
The patent replaces the chemical bonding mechanism (glue) with a mechanical bonding mechanism (microscopic mechanical interlocking). By substituting the gluing process with direct injection molding into nanoporous structures, the patent eliminates glue-related problems while achieving stronger and more reliable bonding.
2Manufacturing precision
If conventional surface treatment is used, then material surface can be prepared, but nanoporous structure formation is difficult and bonding is poor
Solution Approach 1:
The patent applies parameter changes by using specific chemical solutions (hydrofluoric acid or ammonium bifluoride with oxalic acid) and controlling etching parameters such as concentration, temperature, and time to form uniform nanoporous structures. This chemical etching approach provides precise control over pore size and distribution, achieving high manufacturing precision for the nanoporous structure.
Solution Approach 2:
The patent uses chemical intermediaries (acid solutions) to mediate the formation of nanoporous structures on the material surface. These chemical agents facilitate the controlled etching process, transforming the material surface into a nanoporous structure that enables strong plastic bonding without requiring complex manufacturing equipment.
3Strength
If material surface is etched to form nanopores, then bonding strength improves, but processing time and complexity increase
Solution Approach 1:
The patent applies preliminary action by performing surface etching to create nanoporous structures before the injection molding process. This pre-treatment prepares the material surface in advance, allowing the plastic to be directly injected and bonded without requiring additional bonding steps, thereby reducing overall processing time despite the added etching step.
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 method produces materials with strong bonding forces and tightly bonded plastic composite products, addressing issues of weak adhesion and structural inaccuracies, while allowing for flexible design and reduced processing time and costs.
Implementation Method 1
immersing a material to be treated into a first inorganic acid solution and a fluoride acidic solution, respectively, to perform surface etching, so that nanopores are formed on a surface of the material to be treated
Implementation Method 2
Since fluoride ions have strong permeability and are easy to penetrate from the loose pores formed by etching, the pitting corrosion is accelerated
Data Source
AI summary
A surface treatment method of a material, comprising: respectively immersing a material to be treated into a first inorganic acid solution and a fluoride acidic solution to perform surface etching, so that nano-sized holes are formed in the surface of the material to be treated. Further disclosed are a material product and a composite material.