ETHYLENIC RESIN COMPOSITION FOR FOAMED PRODUCT AND MOLDED BODY OF THE SAME
PROBLEM TO BE SOLVED: To provide an ethylenic resin composition for foamed product which is excellent in moldability and can be recycled, and to provide a molded body of the same.SOLUTION: An ethylenic resin composition for foamed product contains 8-92 mass% of a specific ethylenic copolymer (A) and...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an ethylenic resin composition for foamed product which is excellent in moldability and can be recycled, and to provide a molded body of the same.SOLUTION: An ethylenic resin composition for foamed product contains 8-92 mass% of a specific ethylenic copolymer (A) and 8-92 mass% of specific polyethylene (B), and has the following characteristics (i) to (iii): characteristic (i): an MFR of 0.1-5 g/10 min; characteristic (ii): a melt tension at 180°C of 150 mN or more; and characteristic (iii): in a relationship between the melt tension (MT and unit: mN) measured at 180°C, 210°C and 220°C and the measurement temperature (t and unit:°C), a coefficient A (temperature dependency coefficient) of expression (1) approximated by a least square method of-0.070 or more and -0.010 or less. Expression (1): MT=a×e, in the expression (1), e is a base of natural logarithm (Napier's number), and a is a coefficient determination by approximation.SELECTED DRAWING: None
【課題】成形性に優れ、かつリサイクル可能な発泡製品用エチレン系樹脂組成物及びその成形体を提供する。【解決手段】特定のエチレン系共重合体(A)8〜92質量%と、特定のポリエチレン(B)8〜92質量%とを含有し、下記特性(i)〜(iii)を有する発泡製品用エチレン系樹脂組成物。特性(i)MFRが0.1〜5g/10分である。特性(ii)180℃における溶融張力が150mN以上である。特性(iii)180℃、210℃及び220℃において測定される溶融張力(MT、単位:mN)と当該測定温度(t、単位:℃)との関係が、最小二乗法により近似される式(1)の係数A(温度依存性係数)が−0.070以上、−0.010以下である。MT=a×eA×t式(1)上記式(1)中、eは自然対数の底(ネイピア数)、aは近似により決定される係数である。【選択図】なし |
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