WO2018218423A1 - 混杂纤维增强的聚丙烯复合材料 - Google Patents

混杂纤维增强的聚丙烯复合材料 Download PDF

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WO2018218423A1
WO2018218423A1 PCT/CN2017/086335 CN2017086335W WO2018218423A1 WO 2018218423 A1 WO2018218423 A1 WO 2018218423A1 CN 2017086335 W CN2017086335 W CN 2017086335W WO 2018218423 A1 WO2018218423 A1 WO 2018218423A1
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polypropylene
fiber reinforced
hybrid fiber
copolymer
functional
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PCT/CN2017/086335
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French (fr)
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杨根山
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江苏莘翔机电有限公司
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Priority to PCT/CN2017/086335 priority Critical patent/WO2018218423A1/zh
Publication of WO2018218423A1 publication Critical patent/WO2018218423A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
    • C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions 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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions 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
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/14—Copolymers of propene

Definitions

  • the invention relates to a polypropylene composite material, in particular to a hybrid fiber reinforced polypropylene composite material.
  • a hybrid composite refers to a composite material in which two or more reinforcements are reinforced with the same matrix or a plurality of substrates.
  • Hybrid composites can be viewed as a composite of two or more fiber or particle reinforced composites.
  • hybrid composites can be divided into metal-based hybrid composites, ceramic-based hybrid composites, resin-based hybrid composites, and hybrid composites with multiple matrix composites.
  • the reinforcement it can be divided into hybrid fiber composite, hybrid particle composite and fiber and particle hybrid composite.
  • the reinforcement and the matrix are more than one kind of hybrid composite material, it is called super hybrid composite material.
  • Hybrid composite materials are ideal materials for aerospace and aerospace products due to their high specific strength and high specific modulus.
  • the application of hybrid composites not only promotes the upgrading of structural products in the aerospace field, but also plays a positive role in alleviating the current international energy shortage.
  • Fiber reinforced composite materials have been widely used in other fields due to their advantages of light weight, high strength, corrosion resistance and design. With the deepening of research, many basic theories and methods have been perfected, and new FRP materials are emerging. Application technologies are emerging one after another, and the application in infrastructure construction is showing a trend of rapid development. In China, especially with the support of national scientific research projects, the research and development of FRP materials and its application in infrastructure construction have also developed rapidly. Fiber reinforced materials have the properties of elastic materials, high strength, but poor tensile strength and toughness.
  • the object of the present invention is to provide a hybrid fiber reinforced polypropylene composite material in view of the deficiencies of the prior art.
  • a hybrid fiber reinforced polypropylene composite material calculated by mass fraction, comprising the following components: Glass fiber 10-30%, carbon fiber 10-50%, aramid 2-5%, bamboo fiber 5-15%, basic magnesium sulfate whisker 5-25%, polypropylene 10-30%, functional polypropylene copolymer 2-5%, epoxy resin 3-6%, binder 2-8%, filler 5-30%.
  • the binder is a mixture of a nitrile modified phenolic resin and a rubber powder.
  • the filler is one or more of pyrophyllite powder, barium sulfate, potassium feldspar, kyanite, alumina, iron oxide, and graphite powder.
  • the glass fibers are continuous alkali-free glass fibers having a diameter of 15-30 ⁇ m.
  • the polypropylene is one or both of homopolypropylene or copolymerized polypropylene.
  • the functional polypropylene copolymer is a polypropylene/polyvinylpyrrolidone block copolymer having a melt index of from 2.8 to 7.5 g/min under the test conditions of 230 ° C and 2.16 Kg.
  • the polyvinylpyrrolidone in the functional polypropylene copolymer has a mass percentage of from 60 to 80%.
  • the functional polypropylene copolymer is prepared as follows:
  • Synthetic functional polypropylene copolymer the double-end polypropylene and the polyvinylpyrrolidone are dissolved in cyclohexanone at a mass ratio of 1.8:3.0 to 10.0, and then 2-chloro-1-methyliodopyridine is added.
  • Triethylamine the mass ratio between the double-end polypropylene, 2-chloro-1-methyliodopyridine and triethylamine is 1.6: 0.25-0.5: 0.1-0.5; and the temperature is raised to 110-125 After reacting at °C for 9 to 11.5 hours, it was cooled to room temperature, and then filtered and vacuum dried to obtain a functional polypropylene copolymer.
  • the invention can significantly improve the surface tension of the hybrid fiber reinforced polypropylene composite material by adding a self-made functional polypropylene copolymer as a polymer surfactant, and improve the interfacial compatibility between the polypropylene resin and the glass fiber;
  • the present invention utilizes inexpensive bamboo fiber and basic magnesium sulfate whisker to enhance the modified phenolic tree
  • the fat exhibits the good wear resistance of bamboo fiber at room temperature and the high temperature wear resistance of basic magnesium sulfate whisker, thereby obtaining a hybrid fiber reinforced polypropylene composite material with moderate friction coefficient and low wear rate;
  • the hybrid fiber reinforced polypropylene composite of the present invention has high modulus of elasticity, tensile strength and toughness, and expands the range of application of the material.
  • the invention discloses a hybrid fiber reinforced polypropylene composite material, which is calculated by mass fraction and comprises the following components:
  • the binder was 1 wt% of a nitrile modified phenolic resin and 1 wt% of a rubber powder, and the filler was a mixture of pyrophyllite powder, barium sulfate, potassium feldspar, and kyanite.
  • the glass fiber is a continuous alkali-free glass fiber having a diameter of 15-30 ⁇ m, and the polypropylene is a homopolypropylene; the functional polypropylene copolymer is a polypropylene/polyvinylpyrrolidone block copolymer, which is melted.
  • the index was 2.8-7.5 g/min under the test conditions of 230 ° C and 2.16 Kg, and the polyvinylpyrrolidone mass percentage in the functional polypropylene copolymer was 60%.
  • the invention discloses a hybrid fiber reinforced polypropylene composite material, which is calculated by mass fraction and comprises the following components:
  • Glass fiber 30% carbon fiber 10%, aramid 5%, bamboo fiber 10%, basic magnesium sulfate whisker 10%, polypropylene 15%, functional polypropylene copolymer 5%, epoxy resin 5%, binder 3%, filler 7%.
  • the binder is 2 wt% of a nitrile modified phenolic resin and 1 wt% of a rubber powder
  • the filler is pyrophyllite powder, barium sulfate, potassium feldspar, kyanite, alumina, iron oxide, graphite powder. mixture.
  • the glass fiber is a continuous alkali-free glass fiber having a diameter of 15-30 ⁇ m, and the polypropylene is copolymerized.
  • Polypropylene; the functional polypropylene copolymer is a polypropylene/polyvinylpyrrolidone block copolymer having a melt index of 2.8-7.5 g/min under the test conditions of 230 ° C and 2.16 Kg, the functional polypropylene copolymerization
  • the polyvinylpyrrolidone has a mass percentage of 80%.
  • the invention discloses a hybrid fiber reinforced polypropylene composite material, which is calculated by mass fraction and comprises the following components:
  • the binder was 5 wt% of a nitrile modified phenolic resin and 3 wt% of a rubber powder, and the filler was a mixture of pyrophyllite powder, barium sulfate, potassium feldspar, alumina, and iron oxide.
  • the glass fiber is a continuous alkali-free glass fiber having a diameter of 15-30 ⁇ m
  • the polypropylene is a mixture of a homopolypropylene and a copolymerized polypropylene
  • the functional polypropylene copolymer is a polypropylene/polyvinylpyrrolidone
  • the segment copolymer had a melt index of 2.8 to 7.5 g/min under the test conditions of 230 ° C and 2.16 Kg, and the polyvinylpyrrolidone content of the functional polypropylene copolymer was 70% by mass.
  • the invention also discloses a preparation method of the functional polypropylene copolymer, the steps are as follows:
  • Synthetic functional polypropylene copolymer The double-end polypropylene and polyvinylpyrrolidone are dissolved in cyclohexanone at a mass ratio of 1.8:3.0, and then 2-chloro-1-methyliodopyridine and triethyl are added.
  • the amine, the mass ratio between the double-end polypropylene, 2-chloro-1-methyliodopyridine and triethylamine is 1.6:0.25:0.1; the temperature is raised to 110 ° C for 11.5 hours and then cooled to
  • the functional polypropylene copolymer was obtained by filtration at room temperature, followed by vacuum drying.
  • the invention also discloses a preparation method of the functional polypropylene copolymer, the steps are as follows:
  • Synthetic functional polypropylene copolymer the double-end polypropylene and polyvinylpyrrolidone are dissolved in cyclohexanone at a mass ratio of 1.8:10.0, then 2-chloro-1-methyliodopyridine and triethyl are added.
  • the amine, the mass ratio between the two-end polypropylene, 2-chloro-1-methyliodopyridine and triethylamine is 1.6:0.5:0.5; the temperature is raised to 125 ° C for 9 hours and then cooled to room temperature. Then, it was filtered and vacuum dried to obtain a functional polypropylene copolymer.
  • the invention can significantly improve the surface tension of the hybrid fiber reinforced polypropylene composite material by adding a self-made functional polypropylene copolymer as a polymer surfactant, and improve the interfacial compatibility between the polypropylene resin and the glass fiber;
  • the invention utilizes the low-cost bamboo fiber and the basic magnesium sulfate whisker to enhance the modified phenolic resin, and exhibits the good wear resistance of the bamboo fiber at room temperature and the high-temperature wear resistance of the basic magnesium sulfate whisker, thereby obtaining Hybrid fiber reinforced polypropylene composite material with moderate friction coefficient and low wear rate;
  • the hybrid fiber reinforced polypropylene composite of the present invention has high modulus of elasticity, tensile strength and toughness, and expands the range of application of the material.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

公开了一种混杂纤维增强的聚丙烯复合材料，按质量分数计算，包含以下组分：玻璃纤维10-30％、碳纤维10-50％、芳纶2-5％、竹纤维5-15％、碱式硫酸镁晶须5-25％、聚丙烯10-30％、功能聚丙烯共聚物2-5％、环氧树脂3-6％、粘结剂2-8％、填料5-30％。通过添加自制的功能聚丙烯共聚物作为高分子表面活性剂，可以明显提高混杂纤维增强的聚丙烯复合材料的表面张力，改善聚丙烯树脂和玻纤的界面相容性；该混杂纤维增强的聚丙烯复合材料具有较高的弹性模量、拉伸强度和韧性，扩大了材料的适用范围。

Description

[根据细则37.2由ISA制定的发明名称]　混杂纤维增强的聚丙烯复合材料 技术领域
本发明涉及一种聚丙烯复合材料，尤其涉及一种混杂纤维增强的聚丙烯复合材料。
背景技术
混杂复合材料是指将两种或两种以上的增强体增强同一基体或多种基体而制成的复合材料。混杂复合材料可以看成是两种或多种纤维或颗粒增强复合材料的相互复合。按照基体分，混杂复合材料可分为金属基混杂复合材料、陶瓷基混杂复合材料、树脂基混杂复合材料和多种基体复合的混杂复合材料。按照增强体分，可以分为混杂纤维复合材料，混杂颗粒复合材料以及纤维和颗粒混杂复合材料。当增强体和基体都多于一种的混杂复合材料称为超混杂复合材料。
混杂复合材料，由于具有比强度、比模量高的特点，所以是航空、航天产品结构的理想材料。混杂复合材料的应用不仅推动了航空航天领域结构产品的更新换代，而且对缓解目前国际能源不足的问题起到积极的作用。
纤维增强复合材料由于具有轻质、高强、耐腐蚀、可设计等优点在其他领域已得到大量的应用，随着研究不断深入，许多基础理论、方法已趋于完善，新型FRP材料不断涌现，新应用技术层出不穷，在基础设施建设中的应用正呈现出高速发展的趋势。在我国，尤其在国家各级科研计划项目的支持下，FRP材料的研究开发及其在基础设施建设中的应用也得到飞速发展。纤维增强材料具有弹性材料的性质，强度较高，但拉伸强度和韧性较差。
综上所述，有必要开发一种混杂纤维增强的复合材料。
发明内容
本发明的目的是针对现有技术的不足，提供一种混杂纤维增强的聚丙烯复合材料。
本发明是通过以下技术方案实现的：
一种混杂纤维增强的聚丙烯复合材料，按质量分数计算，包含以下组分： 玻璃纤维10-30％、碳纤维10-50％、芳纶2-5％、竹纤维5-15％、碱式硫酸镁晶须5-25％、聚丙烯10-30％、功能聚丙烯共聚物2-5％、环氧树脂3-6％、粘结剂2-8％、填料5-30％。
优选地，所述粘结剂为丁腈改性酚醛树脂和橡胶粉的混合物。
优选地，所述填料为叶蜡石粉、硫酸钡、钾长石、蓝晶石、氧化铝、氧化铁、石墨粉中的一种或多种。
优选地，所述玻璃纤维为连续无碱玻璃纤维，其直径为15-30μm。
优选地，所述聚丙烯为均聚聚丙烯或共聚聚丙烯中的一种或两种。
优选地，所述功能聚丙烯共聚物为聚丙烯/聚乙烯基吡咯烷酮嵌段共聚物，其熔融指数在230℃、2.16Kg的测试条件下为2.8-7.5g/min。
优选地，所述功能聚丙烯共聚物中的聚乙烯基吡咯烷酮质量百分含量为60-80％。
优选地，所述功能聚丙烯共聚物的制备方法如下：
S1.合成双端基聚丙烯：将等规聚丙烯加入过量的浓硝酸中，加热到100～120℃进行回流反应4.5～5.5h，然后对反应液冷却过滤后分别用水、丙酮冲洗至pH值为5.8～6.1，除尽残余硝酸后干燥得双端基聚丙烯；
S2.合成端羟基聚乙烯基吡咯烷酮：以N-乙烯基吡咯烷酮为单体，水作溶剂，过氧化氢为引发剂，浓氨水为活性剂，将上述物料在氮气保护下升温至65～75℃进行聚合反应2.5～3.5h，反应结束后用丙酮沉淀，并对沉淀物进行干燥得端羟基聚乙烯基吡咯烷酮；
S3.合成功能聚丙烯共聚物：将双端基聚丙烯和聚乙烯基吡咯烷酮按质量比为1.8：3.0～10.0溶解在环己酮中，然后加入2-氯-1-甲基碘代吡啶和三乙胺，所述双端基聚丙烯、2-氯-1-甲基碘代吡啶和三乙胺三者之间的质量比为1.6：0.25～0.5：0.1～0.5；升温至110～125℃反应9～11.5h后进行冷却至室温，然后过滤、真空干燥得到功能聚丙烯共聚物。
本发明的有益效果是：
(1)本发明通过添加自制的功能聚丙烯共聚物作为高分子表面活性剂，可以明显提高混杂纤维增强的聚丙烯复合材料的表面张力，改善聚丙烯树脂和玻纤的界面相容性；
(2)本发明利用价格低廉的竹纤维和碱式硫酸镁晶须混杂增强改性酚醛树 脂，发挥竹纤维室温耐磨性好，碱式硫酸镁晶须高温耐磨性佳的特点，从而获得了摩擦系数适中、磨损率低的混杂纤维增强的聚丙烯复合材料；
(3)本发明的混杂纤维增强的聚丙烯复合材料具有较高的弹性模量、拉伸强度和韧性，扩大了材料的适用范围。
具体实施方式
下面对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1：
本发明公开了一种混杂纤维增强的聚丙烯复合材料，按质量分数计算，包含以下组分：
玻璃纤维10％、碳纤维50％、芳纶2％、竹纤维5％、碱式硫酸镁晶须5％、聚丙烯10％、功能聚丙烯共聚物5％、环氧树脂3％、粘结剂2％、填料8％。
所述粘结剂为1wt％的丁腈改性酚醛树脂和1wt％的橡胶粉，所述填料为叶蜡石粉、硫酸钡、钾长石、蓝晶石的混合物。
所述玻璃纤维为连续无碱玻璃纤维，其直径为15-30μm，所述聚丙烯为均聚聚丙烯；所述功能聚丙烯共聚物为聚丙烯/聚乙烯基吡咯烷酮嵌段共聚物，其熔融指数在230℃、2.16Kg的测试条件下为2.8-7.5g/min，所述功能聚丙烯共聚物中的聚乙烯基吡咯烷酮质量百分含量为60％。
实施例2：
本发明公开了一种混杂纤维增强的聚丙烯复合材料，按质量分数计算，包含以下组分：
玻璃纤维30％、碳纤维10％、芳纶5％、竹纤维10％、碱式硫酸镁晶须10％、聚丙烯15％、功能聚丙烯共聚物5％、环氧树脂5％、粘结剂3％、填料7％。
所述粘结剂为2wt％的丁腈改性酚醛树脂和1wt％的橡胶粉，所述填料为叶蜡石粉、硫酸钡、钾长石、蓝晶石、氧化铝、氧化铁、石墨粉的混合物。
所述玻璃纤维为连续无碱玻璃纤维，其直径为15-30μm，所述聚丙烯为共聚 聚丙烯；所述功能聚丙烯共聚物为聚丙烯/聚乙烯基吡咯烷酮嵌段共聚物，其熔融指数在230℃、2.16Kg的测试条件下为2.8-7.5g/min，所述功能聚丙烯共聚物中的聚乙烯基吡咯烷酮质量百分含量为80％。
实施例3：
本发明公开了一种混杂纤维增强的聚丙烯复合材料，按质量分数计算，包含以下组分：
玻璃纤维20％、碳纤维20％、芳纶5％、竹纤维7％、碱式硫酸镁晶须13％、聚丙烯11％、功能聚丙烯共聚物3％、环氧树脂6％、粘结剂8％、填料7％。
所述粘结剂为5wt％的丁腈改性酚醛树脂和3wt％的橡胶粉，所述填料为叶蜡石粉、硫酸钡、钾长石、氧化铝、氧化铁的混合物。
所述玻璃纤维为连续无碱玻璃纤维，其直径为15-30μm，所述聚丙烯为均聚聚丙烯和共聚聚丙烯的混合物；所述功能聚丙烯共聚物为聚丙烯/聚乙烯基吡咯烷酮嵌段共聚物，其熔融指数在230℃、2.16Kg的测试条件下为2.8-7.5g/min，所述功能聚丙烯共聚物中的聚乙烯基吡咯烷酮质量百分含量为70％。
实施例4：
本发明还公开了功能聚丙烯共聚物的制备方法，步骤如下：
S1.合成双端基聚丙烯：将等规聚丙烯加入过量的浓硝酸中，加热到120℃进行回流反应4.5h，然后对反应液冷却过滤后分别用水、丙酮冲洗至pH值为5.8，除尽残余硝酸后干燥得双端基聚丙烯；
S2.合成端羟基聚乙烯基吡咯烷酮：以N-乙烯基吡咯烷酮为单体，水作溶剂，过氧化氢为引发剂，浓氨水为活性剂，将上述物料在氮气保护下升温至75℃进行聚合反应3.5h，反应结束后用丙酮沉淀，并对沉淀物进行干燥得端羟基聚乙烯基吡咯烷酮；
S3.合成功能聚丙烯共聚物：将双端基聚丙烯和聚乙烯基吡咯烷酮按质量比为1.8：3.0溶解在环己酮中，然后加入2-氯-1-甲基碘代吡啶和三乙胺，所述双端基聚丙烯、2-氯-1-甲基碘代吡啶和三乙胺三者之间的质量比为1.6：0.25：0.1；升温至110℃反应11.5h后进行冷却至室温，然后过滤、真空干燥得到功能聚丙烯共聚物。
实施例5：
本发明还公开了功能聚丙烯共聚物的制备方法，步骤如下：
S1.合成双端基聚丙烯：将等规聚丙烯加入过量的浓硝酸中，加热到100℃进行回流反应5.5h，然后对反应液冷却过滤后分别用水、丙酮冲洗至pH值为6.1，除尽残余硝酸后干燥得双端基聚丙烯；
S2.合成端羟基聚乙烯基吡咯烷酮：以N-乙烯基吡咯烷酮为单体，水作溶剂，过氧化氢为引发剂，浓氨水为活性剂，将上述物料在氮气保护下升温至75℃进行聚合反应3.5h，反应结束后用丙酮沉淀，并对沉淀物进行干燥得端羟基聚乙烯基吡咯烷酮；
S3.合成功能聚丙烯共聚物：将双端基聚丙烯和聚乙烯基吡咯烷酮按质量比为1.8：10.0溶解在环己酮中，然后加入2-氯-1-甲基碘代吡啶和三乙胺，所述双端基聚丙烯、2-氯-1-甲基碘代吡啶和三乙胺三者之间的质量比为1.6：0.5：0.5；升温至125℃反应9h后进行冷却至室温，然后过滤、真空干燥得到功能聚丙烯共聚物。
经测试，本发明的实施例1-3中混杂纤维增强的聚丙烯复合材料的性能如下表所示：
Figure PCTCN2017086335-appb-000001
本发明的有益效果是：
(1)本发明通过添加自制的功能聚丙烯共聚物作为高分子表面活性剂，可以明显提高混杂纤维增强的聚丙烯复合材料的表面张力，改善聚丙烯树脂和玻纤的界面相容性；
(2)本发明利用价格低廉的竹纤维和碱式硫酸镁晶须混杂增强改性酚醛树脂，发挥竹纤维室温耐磨性好，碱式硫酸镁晶须高温耐磨性佳的特点，从而获得了摩擦系数适中、磨损率低的混杂纤维增强的聚丙烯复合材料；
(3)本发明的混杂纤维增强的聚丙烯复合材料具有较高的弹性模量、拉伸强度和韧性，扩大了材料的适用范围。
以上所述是本发明的优选实施方式，应该指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (8)

  1. 一种混杂纤维增强的聚丙烯复合材料，按质量分数计算，包含以下组分：玻璃纤维10-30％、碳纤维10-50％、芳纶2-5％、竹纤维5-15％、碱式硫酸镁晶须5-25％、聚丙烯10-30％、功能聚丙烯共聚物2-5％、环氧树脂3-6％、粘结剂2-8％、填料5-30％。
  2. 根据权利要求1所述的一种混杂纤维增强的聚丙烯复合材料，其特征在于，所述粘结剂为丁腈改性酚醛树脂和橡胶粉的混合物。
  3. 根据权利要求1或2所述的一种混杂纤维增强的聚丙烯复合材料，其特征在于，所述填料为叶蜡石粉、硫酸钡、钾长石、蓝晶石、氧化铝、氧化铁、石墨粉中的一种或多种。
  4. 根据权利要求3所述的一种混杂纤维增强的聚丙烯复合材料，其特征在于，所述玻璃纤维为连续无碱玻璃纤维，其直径为15-30μm。
  5. 根据权利要求4所述的一种混杂纤维增强的聚丙烯复合材料，其特征在于，所述聚丙烯为均聚聚丙烯或共聚聚丙烯中的一种或两种。
  6. 根据权利要求1所述的一种混杂纤维增强的聚丙烯复合材料，其特征在于，所述功能聚丙烯共聚物为聚丙烯/聚乙烯基吡咯烷酮嵌段共聚物，其熔融指数在230℃、2.16Kg的测试条件下为2.8-7.5g/min。
  7. 根据权利要求6所述的一种混杂纤维增强的聚丙烯复合材料，其特征在于，所述功能聚丙烯共聚物中的聚乙烯基吡咯烷酮质量百分含量为60-80％。
  8. 根据权利要求7所述的一种混杂纤维增强的聚丙烯复合材料，其特征在于，所述功能聚丙烯共聚物的制备方法如下：
    S1.合成双端基聚丙烯：将等规聚丙烯加入过量的浓硝酸中，加热到100～120℃进行回流反应4.5～5.5h，然后对反应液冷却过滤后分别用水、丙酮冲洗至pH值为5.8～6.1，除尽残余硝酸后干燥得双端基聚丙烯；
    S2.合成端羟基聚乙烯基吡咯烷酮：以N-乙烯基吡咯烷酮为单体，水作溶剂， 过氧化氢为引发剂，浓氨水为活性剂，将上述物料在氮气保护下升温至65～75℃进行聚合反应2.5～3.5h，反应结束后用丙酮沉淀，并对沉淀物进行干燥得端羟基聚乙烯基吡咯烷酮；
    S3.合成功能聚丙烯共聚物：将双端基聚丙烯和聚乙烯基吡咯烷酮按质量比为1.8：3.0～10.0溶解在环己酮中，然后加入2-氯-1-甲基碘代吡啶和三乙胺，所述双端基聚丙烯、2-氯-1-甲基碘代吡啶和三乙胺三者之间的质量比为1.6：0.25～0.5：0.1～0.5；升温至110～125℃反应9～11.5h后进行冷却至室温，然后过滤、真空干燥得到功能聚丙烯共聚物。
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CN105175900A (zh) * 2015-09-07 2015-12-23 沈阳化工大学 一种混杂纤维改性聚丙烯
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