Shrinking Characteristics, Internal Pigmentability and Mechanical Properties of Low-Shrink Unsaturated Polyester Resins: Effect of the Structure and Molecular Weight of Polyurethane-based Low Profile
碩士 === 國立台灣工業技術學院 === 化學工程技術研究所 === 85 === The effect of five thermoplastic polyurethane(PU)-based low profile additives(LPA) with different chemical structure and molecular weight on the volume shrinkage chacteristics, internal pigmentabil...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
1997
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| Online Access: | http://ndltd.ncl.edu.tw/handle/63624109966625969497 |
| Summary: | 碩士 === 國立台灣工業技術學院 === 化學工程技術研究所 === 85 === The effect of five thermoplastic polyurethane(PU)-based low
profile additives(LPA) with different chemical structure and
molecular weight on the volume shrinkage chacteristics, internal
pigmentability and mechanical properties for three low-chrink
unsaturated polyester resin(UP) based on maleic anhydride(MA)-
propylene glycol(PG), MA-PG-PA(phthalic anhydride), and MA-PG-
IPA(isophthalic acid) types of UP respectively after the cure
were investigated. The experimental results have been explained
by phase chactistics of the ternary styrene/UP/LPA, reaction
conversion, cured sample morphology, volume fraction of
microvoid, and the composition change in the continuous
crosslinked polyester phase as a result of phase separation
during the cure.
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