POK UD Tape Composition for Heat- and Chemical-Resistant RTP
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fibre-reinforced thermoplastic UD tapes face challenges with high cost, low temperature resistance, and inadequate chemical and hydrolysis resistance, limiting their suitability for applications requiring high-temperature and chemical stability, such as transporting hydrocarbon fluids.
Innovation Solution
A fibre-reinforced thermoplastic UD tape using an aliphatic polyketone (POK) matrix material with unidirectionally aligned reinforcing fibres, offering improved high-temperature resistance, chemical and hydrolysis resistance, and flame retardancy, manufactured through melt impregnation or powder scattering processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If PEEK or PEKK thermoplastic materials are used in UD tapes, then high-temperature resistance is achieved, but cost increases significantly
Solution Approach 1:
The patent changes the chemical composition parameters of the thermoplastic matrix material from aromatic polyetherketone (PEEK/PEKK) to aliphatic polyketone (POK), specifically using polymers with repeating units of -[CH2-CH(CO)-]n- or -[CH2-CH(CO)-CH2-O-]n-. This parameter change maintains high-temperature resistance while significantly reducing material cost, as POK is a more economical alternative to the expensive aromatic polyetherketone materials.
2Ease of manufacture
If polyolefin materials like PE or PP are used in UD tapes, then cost decreases, but high-temperature resistance and chemical resistance deteriorate
Solution Approach 1:
The patent changes the chemical structure parameters from polyolefin (PE/PP) to aliphatic polyketone (POK). This structural parameter change fundamentally improves high-temperature resistance and chemical/hydrolysis resistance while maintaining cost-effectiveness, as POK contains carbonyl groups that provide superior thermal and chemical stability compared to simple polyolefin chains.
3Temperature
If PEEK or PEKK materials are used in UD tapes, then high-temperature resistance is achieved, but chemical and hydrolysis resistance deteriorates
Solution Approach 1:
The patent changes the chemical composition from aromatic polyetherketone to aliphatic polyketone with specific repeating units. This parameter change improves chemical and hydrolysis resistance because the aliphatic POK structure is inherently more resistant to hydrolysis and chemical attack compared to the aromatic polyetherketone structure, while maintaining high-temperature resistance through the carbonyl group stability.
4Ease of manufacture
If conventional thermoplastic materials are used in UD tapes, then manufacturing is easier, but flame retardancy deteriorates
Solution Approach 1:
The patent changes the chemical composition to aliphatic polyketone, which inherently provides improved flame retardancy compared to conventional thermoplastics. The carbonyl groups in the POK structure contribute to better fire resistance, reducing flammability and improving safety for chemical transportation applications while maintaining manufacturing feasibility through standard processing methods.
Data Source
Figure 1
Figure 2a~2b
AI summary
A fibre-reinforced thermoplastic unidirectional (UD) tape comprising a thermoplastic matrix material and unidirectionally aligned reinforcing fibres dispersed within the thermoplastic matrix material, wherein the thermoplastic matrix material comprises one or more aliphatic polyketones (POK) and/or one or more aromatic polyetherketones (PEK). A method of manufacturing a fibre-reinforced thermoplastic UD tape, a use of the fibre-reinforced thermoplastic UD tape for a reinforced thermoplastic pipe (RTP) and a reinforced thermoplastic pipe (RTP) comprising from the centre to the periphery a thermoplastic inner liner, a reinforcement layer comprising the fibre-reinforced thermoplastic UD tape, and a thermoplastic outer jacket.