Biaxially Oriented Polyolefin Pipe for Chlorinated Water Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pipes made from polyolefins degrade rapidly when exposed to chlorine-containing disinfectants commonly used in water treatment, necessitating improved resistance to maintain longevity.
Innovation Solution
A biaxially oriented polyolefin pipe is produced by forming a polymer composition comprising polyolefin into a tube and stretching it in both the axial and peripheral directions, using a process that includes specific draw ratios and temperatures to enhance resistance to chlorine-containing disinfectants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyolefin pipes are used for water transport, then good resistance to water is achieved, but lifetime is shortened when exposed to chlorine-containing disinfectants
Solution Approach 1:
The patent applies biaxial orientation to the polyolefin pipe, fundamentally changing the physical state and molecular arrangement of the polymer material. This parameter change in the material structure provides enhanced resistance to chlorine-containing disinfectants while maintaining good water resistance, thereby extending the pipe's lifetime without sacrificing its fundamental water transport function.
2Reliability
If additives such as antioxidants and stabilizers are applied to prevent degradation, then resistance to chlorine-containing disinfectants is improved, but device complexity and manufacturing complexity increase
Solution Approach 1:
The patent extracts and eliminates the need for complex additive combinations by applying biaxial orientation to the polyolefin pipe. This physical modification approach removes the disturbing factor of additive complexity while achieving the desired improvement in resistance to chlorine-containing disinfectants, resulting in a simpler yet more effective solution.
3Duration of action of stationary object
If biaxially oriented polyolefin pipe is used, then resistance to chlorine-containing disinfectants is significantly improved, but manufacturing process complexity increases
Solution Approach 1:
The biaxial orientation is applied during the pipe manufacturing process itself, performing the protective action in advance before the pipe is put into service. This preliminary modification of the polyolefin structure during production ensures enhanced resistance to chlorine-containing disinfectants and extended lifespan, while integrating the process into existing manufacturing workflows.
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 biaxially oriented polyolefin pipe demonstrates high resistance to chlorine-containing disinfectants, significantly extending its lifespan and maintaining structural integrity under chlorinated water conditions.
Implementation Method 1
stretching the tube of step a) in the axial direction and in the peripheral direction to obtain the biaxially oriented pipe
Data Source
AI summary
The invention relates to use of a pipe for transporting chlorinated water, wherein the pipe is a biaxialy oriented pipe made by a process comprising the steps of:a) forming a polymer composition comprising a polyolefin into a tube andb) stretching the tube of step a) in the axial direction and in the peripheral direction to obtain the biaxially oriented pipe.