Polymeric Fibre Coating for Textile-to-Rubber Adhesion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods face challenges in effectively bonding textiles to polymeric materials, particularly low surface energy polymers like rubbers and elastomers, and in fixing dyes onto textiles, especially aramid fibers, due to difficulties in achieving strong adhesion.
Innovation Solution
A method involving the use of a polymeric precursor, which is coated onto textile fibers and polymerized to form a coating that promotes adhesion to polymeric materials and dyes, utilizing specific monomers and initiators such as N, N-Diallyl-3-(propylamino)propanamide and N, N, N, N-Tetraallylethanediamide, and photoinitiators like Irgacure 819, to enhance bonding and dye adhesion through UV curing or thermal initiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional bonding methods are used to bond textiles to polymeric materials, then the bonding process is simple, but the adhesion strength is insufficient, especially with low surface energy polymers
Solution Approach 1:
The textile fibers are pre-coated with a polymeric precursor formulation containing cyclopolymerizable monomers before bonding to the polymeric material. This preliminary coating creates a surface layer that will subsequently polymerize to form strong bonds, resolving the contradiction by preparing the surface in advance to achieve high adhesion without complicating the overall bonding process
Solution Approach 2:
The invention changes the chemical parameters of the textile surface by coating it with cyclopolymerizable monomers that contain electron-withdrawing groups. This parameter change transforms the surface properties to enable strong adhesion to low surface energy polymers, achieving high bond strength while maintaining process simplicity
2Strength
If traditional dyeing methods are used on aramid fibers, then the dyeing process is straightforward, but dye adhesion and color fastness are poor
Solution Approach 1:
The aramid fibers are pre-coated with cyclopolymerizable monomers containing electron-withdrawing groups such as cyano, nitro, or carbonyl groups. This preliminary action creates reactive sites on the fiber surface that strongly attract and bind dye molecules, dramatically improving dye adhesion and color fastness while keeping the dyeing process relatively simple
Solution Approach 2:
The cyclopolymerizable monomer coating acts as an intermediary layer between the aramid fiber and the dye. This intermediate layer contains functional groups that facilitate strong interactions with dye molecules, resolving the adhesion problem without requiring complex modification of the dyeing process itself
3Strength
If conventional coating methods are used to promote adhesion, then the coating application is simple, but the coating does not provide sufficient bonding to low surface energy polymers
Solution Approach 1:
The invention uses cyclopolymerizable monomers with specific chemical parameters (electron-withdrawing groups) that fundamentally change the surface energy and reactivity of the textile. This parameter change enables the coating to bond effectively to low surface energy polymers like polyethylene and polypropylene, achieving high bonding strength while maintaining ease of manufacture through simple coating and curing steps
Solution Approach 2:
The coating forms a composite structure combining the textile substrate with cyclopolymerizable monomers containing electron-withdrawing groups. This composite material exhibits enhanced bonding properties that allow adhesion to low surface energy polymers, resolving the contradiction between bonding strength and manufacturing ease
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 successfully improves the adhesion of textiles to polymeric materials and dyes, including low surface energy polymers, and enhances the color fastness of dyes on textiles, particularly aramid fibers, by forming a polymeric coating that binds effectively, expanding the applications of textiles and improving their properties.
Implementation Method 1
The step of polymerising the polymeric precursor may comprise exposing the textile fibres to ultraviolet radiation
Implementation Method 2
the polymeric coating can be used advantageously for adhesion promotion purposes, for example to promote adhesion of the textile fibres to a polymeric material or to one or more dyes
Data Source
AI summary
According to the invention there is provided a method of treating textile fibres including the steps of: providing a polymeric precursor which includes a group of sub-formula (I) where R2 and R3 are independently selected from (CR7R8)n, or a group CR9R10, CR7R8CR9R10 or CR9R10CR7R8 where n is 0, 1 or 2, R7 and R8 are independently selected from hydrogen, halo or hydrocarbyl, and either one of R9 or R10 is hydrogen and the other is an electron withdrawing group, or R9 and R10 together form an electron withdrawing group, and R4 and R5 are independently selected from CH or CR11 where R11 is an electron withdrawing group, the dotted lines indicate the presence or absence of a bond, X1 is a group CX2X3 where the dotted line bond to which it is attached is absent and a group CX2 where the dotted line bond to which it is attached is present, Y1 is a group CY2Y3 where the dotted line bond to which it is attached is absent and a group CY2 where the dotted line bond to which it is attached is present, and X2, X3, Y2 and Y3 are independently selected from hydrogen, fluorine or other substituents, R1 is selected from hydrogen, halo, nitro, hydrocarbyl, optionally substituted or interposed with functional groups, or --R3--R5 =Y1, and R13 is C(O) or S(0)2; coating the textile fibres with the polymeric precursor; and polymerising the polymeric precursor so as to produce a polymeric coating on the textile fibres.