CN116640394A - 一种pvc发泡鞋底的制备方法 - Google Patents
一种pvc发泡鞋底的制备方法 Download PDFInfo
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- 238000005187 foaming Methods 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 47
- 239000000203 mixture Substances 0.000 claims abstract description 36
- -1 polyethylene Polymers 0.000 claims abstract description 28
- 239000004698 Polyethylene Substances 0.000 claims abstract description 25
- 229920000573 polyethylene Polymers 0.000 claims abstract description 25
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 23
- 239000004945 silicone rubber Substances 0.000 claims abstract description 23
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 21
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 21
- 239000003381 stabilizer Substances 0.000 claims abstract description 21
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000006260 foam Substances 0.000 claims abstract description 19
- 239000004088 foaming agent Substances 0.000 claims abstract description 19
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 239000003208 petroleum Substances 0.000 claims abstract description 13
- 229940075507 glyceryl monostearate Drugs 0.000 claims abstract description 8
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
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- 239000000463 material Substances 0.000 claims description 32
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- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 7
- 239000000395 magnesium oxide Substances 0.000 claims description 7
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 7
- 235000012424 soybean oil Nutrition 0.000 claims description 7
- 239000003549 soybean oil Substances 0.000 claims description 7
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 claims description 7
- 229920002101 Chitin Polymers 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 6
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- 229960000892 attapulgite Drugs 0.000 claims description 6
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- 229940100530 zinc ricinoleate Drugs 0.000 claims description 6
- GAWWVVGZMLGEIW-GNNYBVKZSA-L zinc ricinoleate Chemical compound [Zn+2].CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O.CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O GAWWVVGZMLGEIW-GNNYBVKZSA-L 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 3
- 238000007599 discharging Methods 0.000 claims 2
- 238000000748 compression moulding Methods 0.000 claims 1
- 238000005469 granulation Methods 0.000 claims 1
- 230000003179 granulation Effects 0.000 claims 1
- 230000000295 complement effect Effects 0.000 abstract description 6
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- YQEMORVAKMFKLG-UHFFFAOYSA-N glycerine monostearate Natural products CCCCCCCCCCCCCCCCCC(=O)OC(CO)CO YQEMORVAKMFKLG-UHFFFAOYSA-N 0.000 description 3
- SVUQHVRAGMNPLW-UHFFFAOYSA-N glycerol monostearate Natural products CCCCCCCCCCCCCCCCC(=O)OCC(O)CO SVUQHVRAGMNPLW-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
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- 244000082204 Phyllostachys viridis Species 0.000 description 1
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- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 229920001971 elastomer Polymers 0.000 description 1
- 229940075529 glyceryl stearate Drugs 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
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- 230000000630 rising effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
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Abstract
一种耐折PVC发泡鞋底的制备方法,耐折PVC发泡鞋底由以下原料组成:PVC、发泡剂、促进剂、单硬脂酸甘油酯、ABS树脂纤维、甲基乙烯基硅橡胶、氧化聚乙烯、碳五石油树脂、马来酸酐接枝POE、填料、稳定剂,本发明限定PVC、ABS树脂纤维、甲基乙烯基硅橡胶、氧化聚乙烯相互混用,在性能上能够做到互补,并具体限定助剂的组成及含量,以使制备的PVC发泡鞋底具有优异的耐折性能,满足市场需求;通过引入ABS树脂纤维与甲基乙烯基硅橡胶互补,再与其他原料配合,提高制品的抗压缩形变性能,进而提高PVC发泡鞋底的耐折性能。
Description
技术领域
本发明属于PVC鞋底制备领域,具体涉及一种耐折PVC发泡鞋底的制备方法。
背景技术
鞋底材料的种类很多,一般分为天然类鞋底材料和合成类鞋底材料两种。天然类鞋底材料包括天然底革、竹、木材等,合成类鞋底材料包括橡胶、PU材料、PVC合成树脂等。鞋底材料共通的特性具备耐磨、耐水、弹性好、容易适合脚型、定型后不易变形等等条件。目前合成类鞋底材料是应用最广泛的一类鞋材。
PVC发泡材料与其他发泡材料相比,具有力学性能好、粘结性好、加工方便、成本低廉等优点。随着原材料价格的上涨,PVC发泡鞋底材料受到越来越多的欢迎。不过,普通的PVC发泡鞋底材料较脆,耐折性能不佳,使用时间长了之后会出现裂痕甚至折断的现象,缩短了其使用寿命。
发明内容
本发明的目的是克服现有技术的缺点,提供一种耐折PVC发泡鞋底的制备方法。
本发明采用如下技术方案:
一种耐折PVC发泡鞋底的制备方法,所述耐折PVC发泡鞋底由以下重量份的原料组成:PVC 55-65份、发泡剂3-6份、促进剂1-2份、单硬脂酸甘油酯1-3份、ABS树脂纤维9-15份、甲基乙烯基硅橡胶20-30份、氧化聚乙烯6-10份、碳五石油树脂2-3份、马来酸酐接枝POE 3-5份、填料8-12份、稳定剂0.5-1份;
包括以下步骤:
步骤一,将所需重量份的PVC、ABS树脂纤维、甲基乙烯基硅橡胶及马来酸酐接枝POE放入高速共混机中,在120-130℃的温度下,混合搅拌20-25min,得到预混物;
步骤二,将步骤一制得预混物与其余原料放入密炼机中,混合密炼,115℃排胶,室温放置24h以上;
步骤三,将密炼后得到的混合物送入双螺杆挤出机挤出造粒,得打PVC发泡颗粒;
步骤四,将步骤三获得的PVC发泡颗粒置于发泡模具内,进行模压发泡,以获得所述耐折PVC发泡鞋底。
优选的,所述促进剂由以下重量份原料组成:30-40份硼酸锌、18-22份氧化镁、脱乙酰甲壳素8-12份、三乙醇胺4-7份。
优选的,所述填料包括以下重量份原料:凹凸棒土30-40份、玻璃粉15-22份、石棉粉10-15份。
优选的,所述稳定剂由以下重量份的原料组成:聚乙烯蜡15-22份、有机锡30-40份、环氧大豆油5-8份、蓖麻油酸锌12-15份。
优选的,所述发泡剂为AC发泡剂。
优选的,步骤二中,密炼过程具体包括:将步骤一制得的预混物与单硬脂酸甘油酯、碳五石油树脂、氧化聚乙烯、填料放入密炼机中,混合密炼10-15min;然后按所需重量份加入发泡剂、促进剂及稳定剂,调整密炼温度到86℃,保持3min后一次翻料;待密炼温度升至92℃,二次翻料;待密炼温度升至98℃,三次翻料;待密炼温度升至108℃,四次翻料;待密炼温度升至115℃,五次翻料,再密炼1min,排胶,室温放置24h以上。
优选的,步骤三中,双螺杆挤出机的螺杆温度为:一区温度140-155℃、二区温度142-155℃、三区温度142-160℃、四区温度145-160℃、五区温度144-158℃。
优选的,步骤四中,发泡温度为155-165℃,发泡压力8-10MPa,发泡时间6-8min。
由上述对本发明的描述可知,与现有技术相比,本发明的有益效果是:
第一,本发明限定PVC、ABS树脂纤维、甲基乙烯基硅橡胶、氧化聚乙烯相互混用,在性能上能够做到互补,并具体限定助剂的组成及含量,以使制备的PVC发泡鞋底具有优异的耐折性能,满足市场需求;通过引入ABS树脂纤维与甲基乙烯基硅橡胶互补,再与其他原料配合,提高制品的抗压缩形变性能,进而提高PVC发泡鞋底的耐折性能;
第二,引入马来酸酐接枝POE提高氧化聚乙烯与PVC、甲基乙烯基硅橡胶之间的共混性能,以提高PVC发泡鞋底的韧性,进而提高PVC发泡鞋底的耐折性能,同时可改善填料的分散效果,提高原料之间混合的均匀性,进而提高材料的整体性能;
第三,限定稳定剂的具体组成,保证PVC动态热稳定性,减少PVC发泡鞋底加工过程中的析出现象;其中,添加聚乙烯蜡、环氧大豆油、硬脂酸锌作为有机锡的辅助剂,产生协同作用,增加PVC发泡颗粒的挤出效率,提高PVC发泡鞋底的表面光泽度;
第四,限定促进剂的具体组成,与发泡剂配合,使PVC发泡颗粒在发泡过程中,可获得孔眼小、均匀的闭孔结构,且形成的闭孔结构呈相互独立的状态,气泡与气泡之间不连通,以使制得的PVC发泡鞋底具有优异的弹性,以保证制得的PVC发泡鞋底的整体力学性能。
具体实施方式
以下通过具体实施方式对本发明作进一步的描述。
一种耐折PVC发泡鞋底由以下重量份的原料组成:PVC 55-65份、AC发泡剂3-6份、促进剂1-2份、单硬脂酸甘油酯1-3份、ABS树脂纤维9-15份、甲基乙烯基硅橡胶20-30份、氧化聚乙烯6-10份、碳五石油树脂2-3份、马来酸酐接枝POE 3-5份、填料8-12份、稳定剂0.5-1份。
其中,促进剂由以下重量份原料组成:30-40份硼酸锌、18-22份氧化镁、脱乙酰甲壳素8-12份、三乙醇胺4-7份。
填料包括以下重量份原料:凹凸棒土30-40份、玻璃粉15-22份、石棉粉10-15份。
稳定剂由以下重量份的原料组成:聚乙烯蜡15-22份、有机锡30-40份、环氧大豆油5-8份、蓖麻油酸锌12-15份。
其制备方法,包括以下步骤:
步骤一,将所需重量份的PVC、ABS树脂纤维、甲基乙烯基硅橡胶及马来酸酐接枝POE放入高速共混机中,在120-130℃的温度下,混合搅拌20-25min,得到预混物;
步骤二,将步骤一制得的预混物与单硬脂酸甘油酯、碳五石油树脂、氧化聚乙烯、填料放入密炼机中,混合密炼10-15min;然后按所需重量份加入发泡剂、促进剂及稳定剂,调整密炼温度到86℃,保持3min后一次翻料;待密炼温度升至92℃,二次翻料;待密炼温度升至98℃,三次翻料;待密炼温度升至108℃,四次翻料;待密炼温度升至115℃,五次翻料,再密炼1min,排胶,室温放置24h以上;
步骤三,将密炼后得到的混合物送入双螺杆挤出机挤出造粒,得打PVC发泡颗粒;
步骤四,将步骤三获得的PVC发泡颗粒置于发泡模具内,进行模压发泡,以获得所述耐折PVC发泡鞋底,其中,发泡温度为155-165℃,发泡压力8-10MPa,发泡时间6-8min。
具体的,步骤二中,密炼过程具体包括:优选的,步骤三中,双螺杆挤出机的螺杆温度为:一区温度140-155℃、二区温度142-155℃、三区温度142-160℃、四区温度145-160℃、五区温度144-158℃。
实施例1
一种耐折PVC发泡鞋底由以下重量份的原料组成:PVC 55份、AC发泡剂3份、促进剂1份、单硬脂酸甘油酯3份、ABS树脂纤维9份、甲基乙烯基硅橡胶30份、氧化聚乙烯6份、碳五石油树脂3份、马来酸酐接枝POE 3份、填料12份、稳定剂0.5份。
其中,促进剂由以下重量份原料组成:30份硼酸锌、22份氧化镁、脱乙酰甲壳素8份、三乙醇胺7份。
填料包括以下重量份原料:凹凸棒土30份、玻璃粉22份、石棉粉15份。
稳定剂由以下重量份的原料组成:聚乙烯蜡15份、有机锡40份、环氧大豆油5份、蓖麻油酸锌15份。
其制备方法,包括以下步骤:
步骤一,将所需重量份的PVC、ABS树脂纤维、甲基乙烯基硅橡胶及马来酸酐接枝POE放入高速共混机中,在120℃的温度下,混合搅拌25min,得到预混物;
步骤二,将步骤一制得的预混物与单硬脂酸甘油酯、碳五石油树脂、氧化聚乙烯、填料放入密炼机中,混合密炼10min;然后按所需重量份加入发泡剂、促进剂及稳定剂,调整密炼温度到86℃,保持3min后一次翻料;待密炼温度升至92℃,二次翻料;待密炼温度升至98℃,三次翻料;待密炼温度升至108℃,四次翻料;待密炼温度升至115℃,五次翻料,再密炼1min,排胶,室温放置24h以上;
步骤三,将密炼后得到的混合物送入双螺杆挤出机挤出造粒,得打PVC发泡颗粒;
步骤四,将步骤三获得的PVC发泡颗粒置于发泡模具内,进行模压发泡,以获得所述耐折PVC发泡鞋底,其中,发泡温度为155℃,发泡压力8MPa,发泡时间8min。
实施例2
一种耐折PVC发泡鞋底由以下重量份的原料组成:PVC 65份、AC发泡剂6份、促进剂2份、单硬脂酸甘油酯1份、ABS树脂纤维15份、甲基乙烯基硅橡胶20份、氧化聚乙烯10份、碳五石油树脂2份、马来酸酐接枝POE 5份、填料8份、稳定剂1份。
其中,促进剂由以下重量份原料组成:40份硼酸锌、18份氧化镁、脱乙酰甲壳素12份、三乙醇胺4份。
填料包括以下重量份原料:凹凸棒土40份、玻璃粉15份、石棉粉10份。
稳定剂由以下重量份的原料组成:聚乙烯蜡22份、有机锡30份、环氧大豆油8份、蓖麻油酸锌12份。
其制备方法,包括以下步骤:
步骤一,将所需重量份的PVC、ABS树脂纤维、甲基乙烯基硅橡胶及马来酸酐接枝POE放入高速共混机中,在130℃的温度下,混合搅拌20min,得到预混物;
步骤二,将步骤一制得的预混物与单硬脂酸甘油酯、碳五石油树脂、氧化聚乙烯、填料放入密炼机中,混合密炼15min;然后按所需重量份加入发泡剂、促进剂及稳定剂,调整密炼温度到86℃,保持3min后一次翻料;待密炼温度升至92℃,二次翻料;待密炼温度升至98℃,三次翻料;待密炼温度升至108℃,四次翻料;待密炼温度升至115℃,五次翻料,再密炼1min,排胶,室温放置24h以上;
步骤三,将密炼后得到的混合物送入双螺杆挤出机挤出造粒,得打PVC发泡颗粒;
步骤四,将步骤三获得的PVC发泡颗粒置于发泡模具内,进行模压发泡,以获得所述耐折PVC发泡鞋底,其中,发泡温度为165℃,发泡压力10MPa,发泡时间6min。
实施例3
一种耐折PVC发泡鞋底由以下重量份的原料组成:PVC 60份、AC发泡剂5份、促进剂1.5份、单硬脂酸甘油酯2份、ABS树脂纤维12份、甲基乙烯基硅橡胶25份、氧化聚乙烯8份、碳五石油树脂2.5份、马来酸酐接枝POE 4份、填料10份、稳定剂0.8份。
其中,促进剂由以下重量份原料组成:35份硼酸锌、20份氧化镁、脱乙酰甲壳素10份、三乙醇胺5份。
填料包括以下重量份原料:凹凸棒土35份、玻璃粉18份、石棉粉12份。
稳定剂由以下重量份的原料组成:聚乙烯蜡18份、有机锡35份、环氧大豆油6份、蓖麻油酸锌13份。
其制备方法,包括以下步骤:
步骤一,将所需重量份的PVC、ABS树脂纤维、甲基乙烯基硅橡胶及马来酸酐接枝POE放入高速共混机中,在125℃的温度下,混合搅拌22min,得到预混物;
步骤二,将步骤一制得的预混物与单硬脂酸甘油酯、碳五石油树脂、氧化聚乙烯、填料放入密炼机中,混合密炼12min;然后按所需重量份加入发泡剂、促进剂及稳定剂,调整密炼温度到86℃,保持3min后一次翻料;待密炼温度升至92℃,二次翻料;待密炼温度升至98℃,三次翻料;待密炼温度升至108℃,四次翻料;待密炼温度升至115℃,五次翻料,再密炼1min,排胶,室温放置24h以上;
步骤三,将密炼后得到的混合物送入双螺杆挤出机挤出造粒,得打PVC发泡颗粒;
步骤四,将步骤三获得的PVC发泡颗粒置于发泡模具内,进行模压发泡,以获得所述耐折PVC发泡鞋底,其中,发泡温度为160℃,发泡压力9MPa,发泡时间7min。
对比例1
其原料组成及制备方法与实施例3基本一致,其区别在于:PVC发泡鞋底原料组成中不包括ABS树脂纤维及甲基乙烯基硅橡胶。
对比例2
其原料组成及制备方法与实施例3基本一致,其区别在于:PVC发泡鞋底原料组成中不包括ABS树脂纤维。
对比例3
其原料组成及制备方法与实施例3基本一致,其区别在于:PVC发泡鞋底原料组成中不包括甲基乙烯基硅橡胶。
对比例4
其原料组成及制备方法与实施例3基本一致,其区别在于:PVC发泡鞋底原料组成中不包括马来酸酐接枝POE。
对比例5
其原料组成及制备方法与实施例3基本一致,其区别在于:PVC发泡鞋底原料组成中,稳定剂为硬脂酸锌。
对比例6
其原料组成及制备方法与实施例3基本一致,其区别在于:PVC发泡鞋底原料组成中,促进剂为氧化镁。
对比例7
其原料组成及制备方法与实施例3基本一致,其区别在于:PVC发泡鞋底原料组成中,促进剂为硼酸锌。
将实施例1至实施例3与对比例1至对比例7制备的PVC发泡鞋底经测试获得如下数据:
表1各测试例测试数据表
通过上述表格可知,本发明限定PVC、ABS树脂纤维、甲基乙烯基硅橡胶、氧化聚乙烯相互混用,在性能上能够做到互补,并具体限定助剂的组成及含量,以使制备的PVC发泡鞋底具有优异的耐折性能,满足市场需求;通过引入ABS树脂纤维与甲基乙烯基硅橡胶互补,再与其他原料配合,提高制品的抗压缩形变性能,进而提高PVC发泡鞋底的耐折性能;引入马来酸酐接枝POE提高氧化聚乙烯与PVC、甲基乙烯基硅橡胶之间的共混性能,以提高PVC发泡鞋底的韧性,进而提高PVC发泡鞋底的耐折性能,同时可改善填料的分散效果,提高原料之间混合的均匀性,进而提高材料的整体性能。
另外,限定促进剂的具体组成,与发泡剂配合,使PVC发泡颗粒在发泡过程中,可获得孔眼小、均匀的闭孔结构,且形成的闭孔结构呈相互独立的状态,气泡与气泡之间不连通,以使制得的PVC发泡鞋底具有优异的弹性,以保证制得的PVC发泡鞋底的整体力学性能。
以上所述,仅为本发明的较佳实施例而已,故不能以此限定本发明实施的范围,即依本发明申请专利范围及说明书内容所作的等效变化与修饰,皆应仍属本发明专利涵盖的范围内。
Claims (8)
1.一种耐折PVC发泡鞋底的制备方法,其特征在于:所述耐折PVC发泡鞋底由以下重量份的原料组成:PVC 55-65份、发泡剂3-6份、促进剂1-2份、单硬脂酸甘油酯1-3份、ABS树脂纤维9-15份、甲基乙烯基硅橡胶20-30份、氧化聚乙烯6-10份、碳五石油树脂2-3份、马来酸酐接枝POE 3-5份、填料8-12份、稳定剂0.5-1份;
包括以下步骤:
步骤一,将所需重量份的PVC、ABS树脂纤维、甲基乙烯基硅橡胶及马来酸酐接枝POE放入高速共混机中,在120-130℃的温度下,混合搅拌20-25min,得到预混物;
步骤二,将步骤一制得预混物与其余原料放入密炼机中,混合密炼,115℃排胶,室温放置24h以上;
步骤三,将密炼后得到的混合物送入双螺杆挤出机挤出造粒,得打PVC发泡颗粒;
步骤四,将步骤三获得的PVC发泡颗粒置于发泡模具内,进行模压发泡,以获得所述耐折PVC发泡鞋底。
2.根据权利要求1所述的一种耐折PVC发泡鞋底的制备方法,其特征在于:所述促进剂由以下重量份原料组成:30-40份硼酸锌、18-22份氧化镁、脱乙酰甲壳素8-12份、三乙醇胺4-7份。
3.根据权利要求1所述的一种耐折PVC发泡鞋底的制备方法,其特征在于:所述填料包括以下重量份原料:凹凸棒土30-40份、玻璃粉15-22份、石棉粉10-15份。
4.根据权利要求1所述的一种耐折PVC发泡鞋底的制备方法,其特征在于:所述稳定剂由以下重量份的原料组成:聚乙烯蜡15-22份、有机锡30-40份、环氧大豆油5-8份、蓖麻油酸锌12-15份。
5.根据权利要求1所述的一种耐折PVC发泡鞋底的制备方法,其特征在于:所述发泡剂为AC发泡剂。
6.根据权利要求1所述的一种耐折PVC发泡鞋底的制备工艺,其特征在于:步骤二中,密炼过程具体包括:将步骤一制得的预混物与单硬脂酸甘油酯、碳五石油树脂、氧化聚乙烯、填料放入密炼机中,混合密炼10-15min;然后按所需重量份加入发泡剂、促进剂及稳定剂,调整密炼温度到86℃,保持3min后一次翻料;待密炼温度升至92℃,二次翻料;待密炼温度升至98℃,三次翻料;待密炼温度升至108℃,四次翻料;待密炼温度升至115℃,五次翻料,再密炼1min,排胶,室温放置24h以上。
7.根据权利要求1所述的一种耐折PVC发泡鞋底的制备工艺,其特征在于:步骤三中,双螺杆挤出机的螺杆温度为:一区温度140-155℃、二区温度142-155℃、三区温度142-160℃、四区温度145-160℃、五区温度144-158℃。
8.根据权利要求1所述的一种耐折PVC发泡鞋底的制备工艺,其特征在于:步骤四中,发泡温度为155-165℃,发泡压力8-10MPa,发泡时间6-8min。
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