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Non-crosslinked polyethylene resin foam particles having antistatic properties and non-crosslinked polyethylene resin foam moldings
Non-crosslinked polyethylene resin foam particles having antistatic properties and non-crosslinked polyethylene resin foam moldings
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机译:具有抗静电性能的非交联聚乙烯树脂泡沫颗粒和非交联聚乙烯树脂泡沫模制品
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摘要
Provided are non-crosslinked foamed polyethylene resin particles that have a bulk density BD of 10 g/L or more and 100 g/L or less and are obtained by foaming polyethylene resin particles containing an antistatic agent in an amount of 0.1 part by weight or more and 3 parts by weight or less with respect to 100 parts by weight of a polyethylene resin and having a density of 0.920 g/cm 3 or more and less than 0.940 g/cm 3 , and the non-crosslinked foamed polyethylene resin particles have a shrinkage ratio of 3% or more and 30% or less determined in accordance with Formula (1). The non-crosslinked foamed polyethylene resin particles can simply afford an antistatic molded non-crosslinked foamed polyethylene resin body that has a small shrinkage ratio with respect to mold dimension, is deformed in a small degree, and has good surface stretch. Shrinkage ratio = (BD-VBD) x 100/VBD (1) In the formula, BD is a bulk density of the non-crosslinked foamed polyethylene resin particles at 23°C and 0.1 MPa (under standard atmospheric pressure), and VBD is a bulk density of the non-crosslinked foamed polyethylene resin particles at 23°C under a reduced pressure of 0.002 MPa or less.
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机译:本发明提供堆积密度BD为10g / L以上且100g / L以下的非交联发泡聚乙烯树脂粒子,该非交联发泡聚乙烯树脂粒子通过使含有0.1重量份或以下的抗静电剂的聚乙烯树脂粒子发泡而得到。相对于100重量份的聚乙烯树脂,密度为0.920g / cm 3以上且小于0.940g / cm 3,为3重量份以下,所述非交联发泡聚乙烯树脂颗粒具有根据式(1)确定的收缩率为3%以上且30%以下。所述非交联的发泡聚乙烯树脂颗粒可以简单地提供抗静电成型的非交联的发泡聚乙烯树脂体,其相对于模具尺寸的收缩率小,变形小并且具有良好的表面拉伸性。收缩率=(BD-VBD)×100 / VBD(1)式中,BD是未交联的发泡聚乙烯树脂粒子在23℃,0.1MPa(标准大气压下)的体积密度,VBD为非交联的发泡聚乙烯树脂颗粒在0.002MPa或更低的减压下在23℃的堆积密度。
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