Although China's PVC pipeline system has formed a huge scale with an annual output of more than 1 10,000 tons, it has always stayed within the scope of traditional PVC-U. Many enterprises do not understand the international trend and progress of PVC pipeline technology innovation, because the slow technological progress hinders further popularization and application.
The international community is constantly exploring to improve the performance level of PVC pipeline system and broaden the application field of PVC pipeline system, and has achieved remarkable results in the past decade. The main direction is:
-Improve toughness through modification, and develop various modified PVC pipeline systems with good impact resistance and crack resistance while maintaining high strength, usually called PVC- M or PVC-A or PVC-HI.
—— Through biaxial stretching in the process of pipe processing, the molecules are oriented, thus greatly improving the strength and toughness at the same time. Commonly called PVC-O or BO-PVC.
-Expand the application fields, such as: PVC pipes can be bent, folded or even butt welded through improvement and modification. Lining for trenchless repair of old pipelines.
The change and development of the international situation in recent years has provided an unprecedented historical opportunity for China to develop PVC pipeline system. In many application fields, the polyolefin pipeline system competing with PVC pipeline system has been seriously affected by the explosion of oil price, while PVC, which can use coal as raw material, has enhanced its competitiveness by keeping the price low. Facing the new market opportunities, if we can speed up the innovation and development and keep up with the technological progress of PVC pipeline system in the world, we can open up a brand-new situation.
This data set brings together the latest information of technical innovation of PVC pipeline system in recent years. Including the development principle, materials, technology and application of PVC-M and PVC-O 14 articles, and also collected and translated 7 relevant national standards and international standards, totaling *** 25 1 page.
catalogue
Domestic newspaper
1. Accelerate innovation and development, and create a new situation for PVC pressure piping system (P 1-P 18)
2. Study on high impact PVC pipe (P9-P23)
3. A safer and more economical new generation of pipes-PVC-M pipes with high impact resistance for drinking water (P24-P30).
Foreign newspapers
summary
4.PVC-A PVC alloy pipeline, ductile-brittle transition of failure mode, new test for evaluating crack propagation resistance (P3 1-P42)
5. Latest development and design standard of PVC-U, PVC-M and PVC-O pipes (P43-P49)
6. Innovation of 6.PVC pipeline system-in order to improve safety and economy (P50-P56)
7. Molecular oriented PVC and PVC-U pressure pipes for water industry.
8. Fatigue design and fatigue limit of PVC, PVC-M and PVC-O (P67—P7 1)
Technology and performance of PVC-M
9. Strength and toughness evaluation of modified PVC pipe (P72-P8 1)
10, Performance Optimization of Modified PVC Pressure Pipe (P82-P87)
Technology and performance of PVC-O
1 1. New technology for on-line manufacturing of biaxially stretched PVC pipes (P88—P98)
12. properties and characteristics of biaxially oriented PVC pipes produced by continuous process (P99-P 10 1)
Application of PVC-M and PVC-O
13. Development of trenchless application of PVC pipes in North America (P 102—P 109)
14, using expanded and reoriented PVC pipes for pipeline maintenance (10-P 1 15 only)
standard
PVC-M product standard:
15, British standard BSPAS27- 1999 "Rigid PVC -A Pipe and Elbow for Pressure Water Delivery" (P 1 16-P 135).
16, Australian standard as/nzs4765 (int): 2000 modified PVC-m pipe for pressure piping system (p136-p162).
17, south African national standard SANS966-2 "improved PVC pressure piping system" (P63-P 187)
PVC-O product standard
18, international standard ISO 16422: 2006 oriented rigid polyvinyl chloride (PVC-O) pipes and joints for water supply-general (P 188-205)
19, American standard ASTMFl483- oriented PVC PVCO pressure pipeline standard (P206-P2 1 1)
20. Australian interim standard AS444 1 oriented polyvinyl chloride (PVC-O) pressure pipe (p2 12-p239)
Test method standard
2 1, International Standard IS0 1 1673: 2005 Determination of Fracture Toughness of Rigid PVC Pressure Pipe (P240-P25 1)