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Studies on heat shrinkage PVC tubes

Technical Report:

Abstract

Radiation crosslinking of PVC was investigated for the purpose of obtaining a suitable formulation for heat shrinkable tube. PVC was not only compounded with various crosslinking agents and plasticizers to evaluate their effects on the radiation sensitivity, heat shrinkable property and other mechanical properties, but also mixed with NBR, crosslinking agents and plasticizers to obtain efficient crosslinking yield and suitable mechanical properties for heat shrinkable tube. Gel yield of PVC increased with increasing unsaturation levels per molecular weight of crosslinking agents. Among crosslinking agents tested, TMPTMA with three unsaturated groups showed highest gel yield, while PVC containing NBR was more sensitive to crosslinking than PVC itself regardless the types of crosslinking agents and plasticizers. Tensile strength was increased with increasing radiation dose and gel percent, but elongation decreased. It was found that gel percent was increased with increasing radiation dose, heat transformation was decreased with increasing gel percent. When NBR was mixed with PVC, the radiation dosage required for enhancing yield of gel percent and heat transformation were found to be much smaller comparing with the case containing no NBR. Therefore, the addition of NBR to PVC was very effective to increase heat-resisting property of PVC. Heat shrinkage was not  More>>
Authors:
Pyun, Hyung Chick; Kim, Ki Yup; Nho, Young Chang [1] 
  1. Korea Atomic Energy Research Inst., Daeduk (Korea, Republic of)
Publication Date:
Jan 01, 1991
Product Type:
Technical Report
Report Number:
KAERI/RR-965/90
Reference Number:
SCA: 400600; 070205; PA: AIX-23:014149; SN: 92000646637
Resource Relation:
Other Information: PBD: Jan 1991
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; 07 ISOTOPES AND RADIATION SOURCES; PVC; SHRINKAGE; CROSS-LINKING; GELATION; MECHANICAL PROPERTIES; PLASTICIZERS; RADIATION DOSES; THERMODYNAMIC PROPERTIES; TUBES; 400600; 070205; RADIATION CHEMISTRY; INDUSTRIAL APPLICATIONS, RADIATION PROCESSING
OSTI ID:
10113111
Research Organizations:
Korea Atomic Energy Research Inst., Daeduk (Korea, Republic of)
Country of Origin:
Korea, Republic of
Language:
Korean
Other Identifying Numbers:
Other: ON: DE92614805; TRN: KR9100119014149
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
56 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Pyun, Hyung Chick, Kim, Ki Yup, and Nho, Young Chang. Studies on heat shrinkage PVC tubes. Korea, Republic of: N. p., 1991. Web.
Pyun, Hyung Chick, Kim, Ki Yup, & Nho, Young Chang. Studies on heat shrinkage PVC tubes. Korea, Republic of.
Pyun, Hyung Chick, Kim, Ki Yup, and Nho, Young Chang. 1991. "Studies on heat shrinkage PVC tubes." Korea, Republic of.
@misc{etde_10113111,
title = {Studies on heat shrinkage PVC tubes}
author = {Pyun, Hyung Chick, Kim, Ki Yup, and Nho, Young Chang}
abstractNote = {Radiation crosslinking of PVC was investigated for the purpose of obtaining a suitable formulation for heat shrinkable tube. PVC was not only compounded with various crosslinking agents and plasticizers to evaluate their effects on the radiation sensitivity, heat shrinkable property and other mechanical properties, but also mixed with NBR, crosslinking agents and plasticizers to obtain efficient crosslinking yield and suitable mechanical properties for heat shrinkable tube. Gel yield of PVC increased with increasing unsaturation levels per molecular weight of crosslinking agents. Among crosslinking agents tested, TMPTMA with three unsaturated groups showed highest gel yield, while PVC containing NBR was more sensitive to crosslinking than PVC itself regardless the types of crosslinking agents and plasticizers. Tensile strength was increased with increasing radiation dose and gel percent, but elongation decreased. It was found that gel percent was increased with increasing radiation dose, heat transformation was decreased with increasing gel percent. When NBR was mixed with PVC, the radiation dosage required for enhancing yield of gel percent and heat transformation were found to be much smaller comparing with the case containing no NBR. Therefore, the addition of NBR to PVC was very effective to increase heat-resisting property of PVC. Heat shrinkage was not much varied with radiation dose, the types of crosslinking agents and plasticizers, but it was increased remarkably with decreasing stretching temperature and increasing annealing temperature. (Author).}
place = {Korea, Republic of}
year = {1991}
month = {Jan}
}