CN110684284A - 一种高强聚丙烯膜裂丝及其制备方法 - Google Patents

一种高强聚丙烯膜裂丝及其制备方法 Download PDF

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CN110684284A
CN110684284A CN201911091964.0A CN201911091964A CN110684284A CN 110684284 A CN110684284 A CN 110684284A CN 201911091964 A CN201911091964 A CN 201911091964A CN 110684284 A CN110684284 A CN 110684284A
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polypropylene film
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马海燕
王城
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Nantong New Silk Monofilament Polytron Technologies Inc
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10Homopolymers or copolymers of propene
    • C08L23/12Polypropene
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00Treatment of filament-forming or like material
    • D01D1/04Melting filament-forming substances
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/08Melt spinning methods
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/42Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
    • D01D5/426Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by cutting films
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00General methods for the manufacture of artificial filaments or the like
    • D01F1/02Addition of substances to the spinning solution or to the melt
    • D01F1/10Other agents for modifying properties
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/46Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
    • C08K2003/265Calcium, strontium or barium carbonate
    • CCHEMISTRY; METALLURGY
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    • C08L2203/00Applications
    • C08L2203/12Applications used for fibers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Filaments (AREA)

Abstract

本发明公开了一种高强聚丙烯膜裂丝及其制备方法,制备的高强聚丙烯膜裂丝,聚丙烯膜裂丝纤度在800‑1400分特之间,单丝强度≥6.0cN/dtex,断裂伸长率为15‑20%。本发明产品性能优异,强度高。

Description

一种高强聚丙烯膜裂丝及其制备方法
技术领域
本发明涉及一种高强聚丙烯膜裂丝及其制备方法。
背景技术
聚丙烯(PP)具有来源丰富、合成方法简单、密度小、化学稳定性好、价格适中、成型加工容易等优点,广泛应用于工程纤维和塑料等加工领域。由于PP较高的强度、优良的耐腐蚀性和电绝缘性,近年来,缆绳、土工布、编织袋等工程纤维领域对聚丙烯膜裂丝的需求越来越大,聚丙烯膜裂丝有一道生产工序就是利用针辊机膜裂开网,开网使其强度损失约20-40%,当针辊上的针距越大时,强度损失越多。因此普通的聚丙烯膜裂丝存在强度不高、韧性差等缺陷,需要进一步改进。
PP为易生成大球晶的结晶聚合物,弹性体、纳米粒子等添加剂作为分散相可以有效地抑制PP的结晶,使其形成微晶,引发银纹和剪切带,提高其强度;PE晶体与PP晶体之间发生相互制约作用,破坏PP球晶结构,分割成晶片,并进一步被细化。利用上述机理,本发明采用乙烯-1-辛烯共聚物(POE)、线性低密度聚乙烯(LLDPE)和纳米碳酸钙(CaCO3)作为协同增韧增强剂,利用双螺杆对聚丙烯原料进行共混增强改性,并在开网前通过三级拉伸工艺,提高未开网模的强度,将最终成品的强度损失将至最低。
发明内容
本发明的目的在于提供一种产品性能优异,制备方便的高强聚丙烯膜裂丝及其制备方法。
本发明的技术解决方案是:
将PP、POE、LLDPE、CaCO3混合均匀后,利用双螺杆熔融挤出,初生薄膜经液体骤冷成形后,经提膜机等距分割,三级拉伸后开网、定型、上油、收卷。
一种高强聚丙烯膜裂丝,其特征是:
聚丙烯膜裂丝纤度在800-1400分特之间,单丝强度≥6.0cN/dtex,断裂伸长率为15-20%。
一种所述的高强聚丙烯膜裂丝的制备方法,其特征是:
包括下列步骤:将各原料组分(PP、POE、LLDPE、CaCO3)均匀混合;在双螺杆挤出机中进行熔融共混并挤出,再经过液体冷却、三级拉伸、热定型、卷绕,制成产品;双螺杆一到十区的纺丝温度为120℃、130℃、150℃、180℃、180℃、180℃、200℃、200℃、190℃、190℃,出膜模头温度:190℃,液体冷却温度为12℃,三级总拉伸倍率为14倍,各级拉伸倍数分别为6、1.2、1.95倍,三级拉伸温度分别为110℃、130℃、140℃,热定型温度为110℃;液体冷却的冷却液为水。在熔融挤出机中进行熔融共混时,加入的三种助剂为乙烯-1-辛烯共聚物(POE)、线性低密度聚乙烯(LLDPE)和纳米碳酸钙(CaCO3),三种添加剂的加入量均为8%。
共混原料由下列质量份组成见下表:
Figure DEST_PATH_IMAGE002
本发明产品性能优异,强度高。
下面结合实施例对本发明作进一步说明。
具体实施方式
一种高强聚丙烯膜裂丝,聚丙烯膜裂丝纤度在800-1400分特之间,单丝强度≥6.0cN/dtex,断裂伸长率为15-20%。
一种所述的高强聚丙烯膜裂丝的制备方法,包括下列步骤:将各原料组分(PP、POE、LLDPE、CaCO3)均匀混合,在双螺杆挤出机中进行熔融共混并挤出,再经过液体冷却、三级拉伸、热定型、卷绕,制成产品;双螺杆一到十区的纺丝温度为120℃、130℃、150℃、180℃、180℃、180℃、200℃、200℃、190℃、190℃,出膜模头温度:190℃,液体冷却温度为12℃,三级总拉伸倍率为14倍,各级拉伸倍数分别为6、1.2、1.95倍,三级拉伸温度分别为110℃、130℃、140℃,热定型温度为110℃;液体冷却的冷却液为水。上述三种助剂乙烯-1-辛烯共聚物(POE)、线性低密度聚乙烯(LLDPE)和纳米碳酸钙(CaCO3)的加入量均为PP 质量的8%。

Claims (2)

1.一种高强聚丙烯膜裂丝,其特征是:聚丙烯膜裂丝纤度在800-1400分特之间,单丝强度≥6.0cN/dtex,断裂伸长率为15-20%。
2. 一种所述的高强聚丙烯膜裂丝的制备方法,其特征是:包括下列步骤:将各原料组分PP、POE、LLDPE、CaCO3均匀混合,在双螺杆挤出机中进行熔融共混并挤出,再经过液体冷却、三级拉伸、热定型、卷绕,制成产品;双螺杆一到十区的纺丝温度为120℃、130℃、150℃、180℃、180℃、180℃、200℃、200℃、190℃、190℃,出膜模头温度:190℃,液体冷却温度为12℃,三级总拉伸倍率为14倍,各级拉伸倍数分别为6、1.2、1.95倍,三级拉伸温度分别为110℃、130℃、140℃,热定型温度为110℃;液体冷却的冷却液为水; POE、LLDPE、CaCO3的加入量均为PP 质量的8%。
CN201911091964.0A 2019-11-11 2019-11-11 一种高强聚丙烯膜裂丝及其制备方法 Pending CN110684284A (zh)

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Application publication date: 20200114