Title:
配管用樹脂組成物の長期耐久性予測方法及び配管用樹脂に用いられるオレフィン系高分子
Document Type and Number:
Japanese Patent JP6942245
Kind Code:
B2
Abstract:
The present application is a method for evaluating long-term durability of a resin for piping, and unlike the conventional FNCT evaluation method requiring a long period of time, it can provide a method capable of predicting long-term durability of a resin for piping in a short time, by simple calculation using a content of tie molecules, an entanglement molecular weight (Me) and a content of ultrahigh molecular weight components. In addition, the present application is an invention relating to an olefinic polymer. The polymer is configured to have a predetermined relationship in relation to the content of tie molecules, the entanglement molecular weight (Me) and the content of ultrahigh molecular weight components, whereby the polymer of the present application can be used in the manufacture of a heating pipe requiring excellent long-term durability.
Inventors:
Park, Sung-Hyun
Lee, Hyun-Sop
Park, Chung-San
Kim, Chun-su
Yu, Yong-Suk
Hong, Ta-sik
Lee, Myung-Han
Lee, Hyun-Sop
Park, Chung-San
Kim, Chun-su
Yu, Yong-Suk
Hong, Ta-sik
Lee, Myung-Han
Application Number:
JP2020513310A
Publication Date:
September 29, 2021
Filing Date:
September 28, 2018
Export Citation:
Assignee:
LG HAUSYS,LTD.
International Classes:
G01N17/00; G01N3/00
Domestic Patent References:
| JP63308049A | ||||
| JP2004169037A | ||||
| JP2019529950A | ||||
| JP2017516880A |
Other References:
Amirpouyan Sardashti,Methodologies for Obtaining Reliable Indicators for the Enviromental Stress Cracking Resistance of Polyethylene,A thesis for the degree of Doctor of Philosophy,University of Waterloo,2014年,pp.1-247
Mitsuhiro Aiba et al.,Effect of ultra-high molecular weight species in high-density polyethylenes on the resistance to creep failure by a surface active agent,Polymer Degradation and Stability,1998年,Vol.61,pp.1-8
Ali Adib et al.,The Effect of Microstructure on the Slow Crack Growth Resistance in Polyethylene Resins,Polymer Engineering and Science,2015年,2015,pp.1018-1023
J.Cazenave et al.,Short-term mechanical and structural approaches for the evaluation of polyethylene stress crack resistance,Polymer,Vol.47,2006年,pp.3904-3914
Joy J.Cheng et al.,Chain Entanglements and Mechanical Behavior of High Densith Polyethylene,Journal of Engineering Materials and Technology,2010年01月,Vol.132,pp.011016-1 - 011016-7
Roland Seguela,Critical Review of the Molecular Topology of Semicrystalline Polymers: The Origin and Assessment of Intercrystalline Tie Molecules and Chain Entanglements,J.Polym.Sci. Part B: Polym.Phys.,2005年,Vol.43,pp.1729-1748
綾 哲也 他,石油樹脂のブレンドによるポリオレフィンの非晶構造制御と力学物性,高分子論文集,V0l.62,No.12,579-584頁
Mitsuhiro Aiba et al.,Effect of ultra-high molecular weight species in high-density polyethylenes on the resistance to creep failure by a surface active agent,Polymer Degradation and Stability,1998年,Vol.61,pp.1-8
Ali Adib et al.,The Effect of Microstructure on the Slow Crack Growth Resistance in Polyethylene Resins,Polymer Engineering and Science,2015年,2015,pp.1018-1023
J.Cazenave et al.,Short-term mechanical and structural approaches for the evaluation of polyethylene stress crack resistance,Polymer,Vol.47,2006年,pp.3904-3914
Joy J.Cheng et al.,Chain Entanglements and Mechanical Behavior of High Densith Polyethylene,Journal of Engineering Materials and Technology,2010年01月,Vol.132,pp.011016-1 - 011016-7
Roland Seguela,Critical Review of the Molecular Topology of Semicrystalline Polymers: The Origin and Assessment of Intercrystalline Tie Molecules and Chain Entanglements,J.Polym.Sci. Part B: Polym.Phys.,2005年,Vol.43,pp.1729-1748
綾 哲也 他,石油樹脂のブレンドによるポリオレフィンの非晶構造制御と力学物性,高分子論文集,V0l.62,No.12,579-584頁
Attorney, Agent or Firm:
Patent business corporation Ikeuchi and Partners