WO2022127860A1 - Modified polypropylene material, preparation method therefor, and application thereof - Google Patents
Modified polypropylene material, preparation method therefor, and application thereof Download PDFInfo
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- WO2022127860A1 WO2022127860A1 PCT/CN2021/138778 CN2021138778W WO2022127860A1 WO 2022127860 A1 WO2022127860 A1 WO 2022127860A1 CN 2021138778 W CN2021138778 W CN 2021138778W WO 2022127860 A1 WO2022127860 A1 WO 2022127860A1
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- reinforcing fibers
- polypropylene material
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 48
- -1 polypropylene Polymers 0.000 title claims abstract description 46
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 239000003365 glass fiber Substances 0.000 claims abstract description 14
- 238000000071 blow moulding Methods 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims abstract description 6
- 239000012783 reinforcing fiber Substances 0.000 claims description 41
- 239000000203 mixture Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 229920002748 Basalt fiber Polymers 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229920000578 graft copolymer Polymers 0.000 claims description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000009826 distribution Methods 0.000 abstract description 6
- 238000007667 floating Methods 0.000 abstract description 5
- 239000000155 melt Substances 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Definitions
- the invention relates to the technical field of engineering plastics, in particular to a modified polypropylene material and a preparation method and application thereof.
- Polypropylene material is currently the most widely used polymer material. It has the advantages of excellent processing performance and mechanical properties, and is widely used in daily life and industrial production fields, such as: agricultural film, wire and cable, communication, housing construction and aviation manufacturing. Wait.
- the polyolefin materials suitable for blow molding and blister molding are basically HDPE or PP pure resins. These resins can be molded well, but they still need to be improved in terms of heat resistance and strength.
- the industry usually uses the high strength and high rigidity of glass fiber to improve product strength and heat resistance, but conventional glass fiber reinforced polypropylene materials have low melt strength, low melt elongation, and surface floating fibers and poor toughness. And other issues.
- the purpose of the present invention is to provide a modified polypropylene material with high surface gloss, few floating fibers, good toughness and high melt elongation, which is beneficial to blow molding and suction molding and other occasions. .
- Another object of the present invention is to provide a method for preparing the above modified polypropylene material.
- a modified polypropylene material, by weight, comprising the following components:
- the reinforcing fiber includes component I, component II and component III, wherein:
- Component I It is composed of reinforcing fibers with a length of less than 0.1 mm, and the percentage of the reinforcing fibers is 10-20%, preferably 14-18%;
- Component II It is composed of reinforcing fibers with a length of 0.1 mm-0.3 mm, and the percentage of the reinforcing fibers is 50-75%, preferably 60-70%;
- Component III It is composed of reinforcing fibers with a length of 0.4 mm-0.8 mm, and the percentage of the reinforcing fibers is 5-40%, preferably 15-25%.
- the present invention finds that the surface gloss of the modified polypropylene material can be improved by controlling the length of the reinforcing fibers within the range of less than 0.1mm, 0.1mm-0.3mm and 0.4mm-0.8mm, and by adjusting the distribution content of each length It can improve the toughness of the material, and can improve the melt elongation rate of the material, which is beneficial to blow molding and blister molding.
- the reinforcing fibers are selected from one or a mixture of glass fibers, quartz fibers and basalt fibers; the average diameter of the reinforcing fibers is 5-20 microns.
- the polypropylene resin is selected from one or a mixture of homopolypropylene, block copolymerized polypropylene and random copolymerized polypropylene.
- the compatibilizer is a graft polymer of a polar monomer and polypropylene, wherein the polar monomer is selected from one or a mixture of maleic anhydride, acrylic acid, and acrylate derivatives.
- the present invention also provides a preparation method of the above-mentioned modified polypropylene material, comprising the following steps:
- the modified polypropylene material is prepared by melt blending and extrusion granulation through a twin-screw extruder.
- the position of the twin-screw extruder side feeding system can be adjusted, and the reinforcing fibers enter the screw in the first to tenth zones, and are added after the extruder die, and then directly combined with the polypropylene melt.
- the reinforcing fibers of the present invention enter the screw through different regions, so that the residence time of the reinforcing fibers in the extruder can be adjusted, and the shearing degree of the reinforcing fibers can be controlled, thereby controlling the retention length of the reinforcing fibers.
- the temperature of the first to second zones of the twin-screw extruder is 120°C-160°C
- the temperature of the third to fifth zone is 180°C-300°C
- the temperature of the fifth to tenth zone is 180°C-300°C
- the screw speed is 300rpm-600rpm.
- the present invention also provides the application of the above modified polypropylene material in blow molding and suction molding occasions.
- the present invention has the following beneficial effects:
- the present invention Compared with the glass fiber material of conventional length (0.4-0.6mm), the present invention has high surface gloss, less floating fibers, high elongation at break, Good toughness, which is conducive to testing such as falling balls; and high melt elongation, mainly suitable for blow molding and blister molding and other occasions.
- the raw materials used in the examples of the present invention and the comparative examples are all from commercially available;
- Block copolymer polypropylene PP SP179, Lanzhou Petrochemical
- Maleic anhydride grafted polypropylene PP-g-MAH manufacturer Polyram; model: 1001CN;
- Glass fiber 1 It is a glass fiber raw material with a diameter of 8 microns;
- Glass fiber 2 It is the glass fiber in the modified polypropylene material product, with a diameter of 8 microns and a length of 0.4-0.6 mm;
- Glass fiber 3 It is the glass fiber in the modified polypropylene material product, with a diameter of 8 microns and a length of 1.0-2.0 mm;
- Quartz fiber 6 microns in diameter
- Basalt fiber 10 microns in diameter
- Example 1-7 and Comparative Example 1-7 Preparation of Modified Polypropylene Material
- the modified polypropylene material is prepared by melt blending and extrusion granulation through a twin-screw extruder.
- the position of the extruder side feeding system can be adjusted, and the reinforcing fibers can enter the extruder screw in the first to tenth zones, and be added after the extruder die, and then directly combined with the polypropylene melt. Reinforcing fibers with different lengths and content distributions can be obtained by adjusting the position where the reinforcing fibers enter the extruder screw.
- the temperature of the first to second zone of the extruder is 120°C-160°C
- the temperature of the third to fifth zone is 180°C-300°C
- the temperature of the fifth to tenth zone is 180°C-300°C
- the screw speed is 300rpm-600rpm.
- Test method for the length and distribution of reinforcing fibers After injection molding, the splines are first separated from the matrix by a high-temperature sintering scheme, and then the length of the reinforcing fibers is measured by automatic imaging analysis technology;
Abstract
A modified polypropylene material, a preparation method therefor, and an application thereof, comprising: a. 20-80 parts of polypropylene resin, b. 1-20 parts of compatibilising agent, and c. 10-40 parts of reinforced fibre; the reinforced fibre comprises a component I, a component II, and a component III, wherein component I is composed of reinforced fibre with a length of less than 0.1 mm and accounts for 10-20% of the reinforced fibre; component II is composed of reinforced fibre with a length of 0.1-0.3 mm and accounts for 50-75% of the reinforced fibre; and component III is composed of reinforced fibre with a length of 0.4-0.8 mm and accounts for 5-40% of the reinforced fibre. By means of controlling the length and content distribution of the reinforced fibre in the modified polypropylene material, compared to glass fibre material of a conventional length (0.4-0.6 mm), the surface gloss thereof is higher and there is less floating fibre; the elongation at break is high and the toughness is good, being conducive to drop ball tests, and the melt elongation is high, mainly being suitable for applications such as blow moulding and blister moulding.
Description
本发明涉及工程塑料技术领域，特别涉及一种改性聚丙烯材料及其制备方法和应用。The invention relates to the technical field of engineering plastics, in particular to a modified polypropylene material and a preparation method and application thereof.
聚丙烯材料是目前用量最大的高分子材料，具有优异的加工性能和力学性能等优点，被广泛应用于日常生活和工业生产领域，如：农用薄膜、电线电缆、通讯、房屋建筑和航空制造业等。Polypropylene material is currently the most widely used polymer material. It has the advantages of excellent processing performance and mechanical properties, and is widely used in daily life and industrial production fields, such as: agricultural film, wire and cable, communication, housing construction and aviation manufacturing. Wait.
目前适用于吹塑和吸塑用的聚烯烃材料，基本都是HDPE或者PP纯树脂，这些树脂能较好地成型，但是在耐热和强度方面还需要改善。行业内通常是利用玻璃纤维的高强度和高刚性来提高产品强度和耐热，但常规的玻璃纤维增强聚丙烯材料具有熔体强度低，熔体延伸率低，还有表面浮纤和韧性差等问题。At present, the polyolefin materials suitable for blow molding and blister molding are basically HDPE or PP pure resins. These resins can be molded well, but they still need to be improved in terms of heat resistance and strength. The industry usually uses the high strength and high rigidity of glass fiber to improve product strength and heat resistance, but conventional glass fiber reinforced polypropylene materials have low melt strength, low melt elongation, and surface floating fibers and poor toughness. And other issues.
因此，有必要研究一种适用于吹塑和吸塑用的玻纤增强聚丙烯材料。Therefore, it is necessary to study a glass fiber reinforced polypropylene material suitable for blow molding and blister molding.
发明内容SUMMARY OF THE INVENTION
为了克服现有技术的缺点与不足，本发明的目的在于提供一种表面光泽度高，浮纤少，韧性好且熔体延伸率高的利于吹塑和吸塑等场合的改性聚丙烯材料。In order to overcome the shortcomings and deficiencies of the prior art, the purpose of the present invention is to provide a modified polypropylene material with high surface gloss, few floating fibers, good toughness and high melt elongation, which is beneficial to blow molding and suction molding and other occasions. .
本发明的另一目的是提供上述改性聚丙烯材料的制备方法。Another object of the present invention is to provide a method for preparing the above modified polypropylene material.
本发明是通过以下技术方案实现的：The present invention is achieved through the following technical solutions:
一种改性聚丙烯材料，按重量份计，包括以下组分：A modified polypropylene material, by weight, comprising the following components:
聚丙烯树脂 20-80份；20-80 parts of polypropylene resin;
相容剂 1-20份；Compatibilizer 1-20 copies;
增强纤维 10-40份；Reinforcing fiber 10-40 copies;
所述增强纤维包括组分I、组分II和组分Ⅲ，其中：The reinforcing fiber includes component I, component II and component III, wherein:
组分I：由长度为小于0.1mm的增强纤维组成，其占增强纤维的根数百分比为10-20％，优选为14-18％；Component I: It is composed of reinforcing fibers with a length of less than 0.1 mm, and the percentage of the reinforcing fibers is 10-20%, preferably 14-18%;
组分II：由长度为0.1mm-0.3mm的增强纤维组成，其占增强纤维的根数百分比为50-75％，优选为60-70％；Component II: It is composed of reinforcing fibers with a length of 0.1 mm-0.3 mm, and the percentage of the reinforcing fibers is 50-75%, preferably 60-70%;
组分Ⅲ：由长度为0.4mm-0.8mm的增强纤维组成，其占增强纤维的根数百分比为5-40％，优选为15-25％。Component III: It is composed of reinforcing fibers with a length of 0.4 mm-0.8 mm, and the percentage of the reinforcing fibers is 5-40%, preferably 15-25%.
本发明通过研究发现，通过将增强纤维的长度控制在小于0.1mm、0.1mm-0.3mm和 0.4mm-0.8mm范围内，并通过调节各长度分布含量，能改善改性聚丙烯材料的表面光泽度，提高材料的韧性，且能提高材料的熔体延伸率，利于吹塑和吸塑等场合。Through research, the present invention finds that the surface gloss of the modified polypropylene material can be improved by controlling the length of the reinforcing fibers within the range of less than 0.1mm, 0.1mm-0.3mm and 0.4mm-0.8mm, and by adjusting the distribution content of each length It can improve the toughness of the material, and can improve the melt elongation rate of the material, which is beneficial to blow molding and blister molding.
优选的，所述增强纤维选自玻璃纤维、石英纤维、玄武岩纤维中的一种或几种的混合；所述增强纤维的平均直径为5-20微米。Preferably, the reinforcing fibers are selected from one or a mixture of glass fibers, quartz fibers and basalt fibers; the average diameter of the reinforcing fibers is 5-20 microns.
优选的，所述聚丙烯树脂选自均聚聚丙烯、嵌段共聚聚丙烯、无规共聚聚丙烯中的一种或几种的混合。Preferably, the polypropylene resin is selected from one or a mixture of homopolypropylene, block copolymerized polypropylene and random copolymerized polypropylene.
优选的，所述相容剂为极性单体与聚丙烯的接枝聚合物，其中极性单体选自马来酸酐、丙烯酸、丙烯酸酯类衍生物中的一种或几种的混合物。Preferably, the compatibilizer is a graft polymer of a polar monomer and polypropylene, wherein the polar monomer is selected from one or a mixture of maleic anhydride, acrylic acid, and acrylate derivatives.
本发明还提供上述改性聚丙烯材料的制备方法，包括如下步骤：The present invention also provides a preparation method of the above-mentioned modified polypropylene material, comprising the following steps:
按照配方含量称量各组分，并将除增强纤维外的各组分混合均匀，随后将混合物加入双螺杆挤出机的主喂料系统；同时将增强纤维加入双螺杆挤出机的侧喂料系统，然后通过双螺杆挤出机熔融共混、挤出造粒制备得到改性聚丙烯材料。Weigh each component according to the formula content, and mix all components except the reinforcing fiber uniformly, then add the mixture to the main feeding system of the twin-screw extruder; at the same time, add the reinforcing fiber to the side feeding system of the twin-screw extruder The modified polypropylene material is prepared by melt blending and extrusion granulation through a twin-screw extruder.
优选的，双螺杆挤出机侧喂系统可以调节位置，增强纤维在第一至第十区进入螺杆，以及在挤出机模头后再加入，然后和聚丙烯熔体直接结合。本发明增强纤维通过不同区域进入螺杆，可以调节增强纤维在挤出机的停留时间，控制增强纤维受剪切的程度，从而控制增强纤维的保留长度。Preferably, the position of the twin-screw extruder side feeding system can be adjusted, and the reinforcing fibers enter the screw in the first to tenth zones, and are added after the extruder die, and then directly combined with the polypropylene melt. The reinforcing fibers of the present invention enter the screw through different regions, so that the residence time of the reinforcing fibers in the extruder can be adjusted, and the shearing degree of the reinforcing fibers can be controlled, thereby controlling the retention length of the reinforcing fibers.
优选的，双螺杆挤出机一至二区温度为120℃-160℃，三至五区温度为180℃-300℃，五至十区温度为180℃-300℃，螺杆转速为300rpm-600rpm。Preferably, the temperature of the first to second zones of the twin-screw extruder is 120°C-160°C, the temperature of the third to fifth zone is 180°C-300°C, the temperature of the fifth to tenth zone is 180°C-300°C, and the screw speed is 300rpm-600rpm.
本发明还提供了上述改性聚丙烯材料在吹塑和吸塑场合中的应用。The present invention also provides the application of the above modified polypropylene material in blow molding and suction molding occasions.
本发明与现有技术相比，具有如下有益效果：Compared with the prior art, the present invention has the following beneficial effects:
本发明通过控制改性聚丙烯材料中增强纤维的长度及含量分布，与常规长度(0.4-0.6mm)的玻纤材料相比，其表面光泽度高，浮纤少；断裂伸长率大，韧性好，利于落球等测试；且熔体延伸率高，主要适用于吹塑和吸塑等场合。Compared with the glass fiber material of conventional length (0.4-0.6mm), the present invention has high surface gloss, less floating fibers, high elongation at break, Good toughness, which is conducive to testing such as falling balls; and high melt elongation, mainly suitable for blow molding and blister molding and other occasions.
下面通过具体实施方式来进一步说明本发明，以下实施例为本发明较佳的实施方式，但本发明的实施方式并不受下述实施例的限制。The present invention will be further described below through specific embodiments. The following examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the following examples.
本发明实施例和对比例所采用的原料均来源于市购；The raw materials used in the examples of the present invention and the comparative examples are all from commercially available;
聚丙烯树脂：Polypropylene resin:
嵌段共聚聚丙烯：PP SP179，兰州石化；Block copolymer polypropylene: PP SP179, Lanzhou Petrochemical;
相容剂：Compatibilizer:
马来酸酐接枝聚丙烯PP-g-MAH：厂家Polyram；型号：1001CN；Maleic anhydride grafted polypropylene PP-g-MAH: manufacturer Polyram; model: 1001CN;
增强纤维：Reinforcing fibers:
玻璃纤维1：为玻璃纤维原料，直径为8微米；Glass fiber 1: It is a glass fiber raw material with a diameter of 8 microns;
玻璃纤维2：为改性聚丙烯材料产品中的玻璃纤维，直径为8微米，长度为0.4-0.6mm；Glass fiber 2: It is the glass fiber in the modified polypropylene material product, with a diameter of 8 microns and a length of 0.4-0.6 mm;
玻璃纤维3：为改性聚丙烯材料产品中的玻璃纤维，直径为8微米，长度为1.0-2.0mm；Glass fiber 3: It is the glass fiber in the modified polypropylene material product, with a diameter of 8 microns and a length of 1.0-2.0 mm;
石英纤维：直径为6微米；Quartz fiber: 6 microns in diameter;
玄武岩纤维：直径为10微米；Basalt fiber: 10 microns in diameter;
实施例1-7及对比例1-7：改性聚丙烯材料的制备Example 1-7 and Comparative Example 1-7: Preparation of Modified Polypropylene Material
按照配方含量称量各组分，并将除增强纤维外的各组分混合均匀，随后将混合物加入双螺杆挤出机的主喂料系统；同时将增强纤维加入双螺杆挤出机的侧喂料系统，然后通过双螺杆挤出机熔融共混、挤出造粒制备得到改性聚丙烯材料。Weigh each component according to the formula content, and mix all components except the reinforcing fiber uniformly, then add the mixture to the main feeding system of the twin-screw extruder; at the same time, add the reinforcing fiber to the side feeding system of the twin-screw extruder The modified polypropylene material is prepared by melt blending and extrusion granulation through a twin-screw extruder.
其中挤出机侧喂系统可以调节位置，增强纤维可以在第一至第十区进入挤出机螺杆，以及在挤出机模头后再加入，然后和聚丙烯熔体直接结合。通过调节增强纤维进入挤出机螺杆的位置，得到不同长度和含量分布的增强纤维。The position of the extruder side feeding system can be adjusted, and the reinforcing fibers can enter the extruder screw in the first to tenth zones, and be added after the extruder die, and then directly combined with the polypropylene melt. Reinforcing fibers with different lengths and content distributions can be obtained by adjusting the position where the reinforcing fibers enter the extruder screw.
其中挤出机一至二区温度为120℃-160℃，三至五区温度为180℃-300℃，五至十区温度为180℃-300℃，螺杆转速为300rpm-600rpm。The temperature of the first to second zone of the extruder is 120℃-160℃, the temperature of the third to fifth zone is 180℃-300℃, the temperature of the fifth to tenth zone is 180℃-300℃, and the screw speed is 300rpm-600rpm.
各性能的测试标准或方法：Test standards or methods for each performance:
增强纤维的长度以及分布的测试方法：注塑后的样条首先采用高温灼烧的方案将增强纤维从基体中分离出，再使用自动成像分析技术对增强纤维长度进行测量；Test method for the length and distribution of reinforcing fibers: After injection molding, the splines are first separated from the matrix by a high-temperature sintering scheme, and then the length of the reinforcing fibers is measured by automatic imaging analysis technology;
光泽度：ISO 2813-2014；60度角；Gloss: ISO 2813-2014; 60 degree angle;
断裂伸长率：ISO 527-1-2019：测试条件：23℃；Elongation at break: ISO 527-1-2019: Test condition: 23℃;
熔体强度、熔体断裂速度：熔体拉伸流变仪测试，测试条件：180℃；Melt strength, melt fracture speed: melt tensile rheometer test, test condition: 180 ℃;
表1各实施例与对比例中各组分的具体组分(重量份)及各性能测试结果The specific components (parts by weight) of each component in each embodiment and comparative example of Table 1 and the test results of each performance
续表1：Continued from Table 1:
由上表实施例1-4和对比例1-2、6-7可以看出，增强纤维的长度及含量分布对聚丙烯 的表面光泽度、韧性及熔体延伸性有影响，本发明通过控制改性聚丙烯中的增强纤维的长度及含量分布，制备得到的改性聚丙烯表面光泽度高，浮纤少；断裂伸长率大，韧性好，利于落球等测试；且熔体延伸性好，主要适用于吹塑和吸塑等场合。由实施例4和对比例3-5可以看出，本发明通过控制三种不同长度的玻璃纤维组合，可以明显改善材料的光泽度、韧性和熔体延伸性。It can be seen from Examples 1-4 and Comparative Examples 1-2 and 6-7 in the above table that the length and content distribution of reinforcing fibers have an impact on the surface gloss, toughness and melt elongation of polypropylene. The length and content distribution of the reinforcing fibers in the modified polypropylene, the prepared modified polypropylene has high surface gloss, less floating fibers; high elongation at break, good toughness, which is conducive to testing such as falling balls; and good melt elongation , mainly suitable for blow molding and blister and other occasions. It can be seen from Example 4 and Comparative Examples 3-5 that the present invention can significantly improve the gloss, toughness and melt extensibility of the material by controlling the combination of three different lengths of glass fibers.
Claims (8)
- 一种改性聚丙烯材料，其特征在于，按重量份计，包括以下组分：A modified polypropylene material, characterized in that, in parts by weight, comprising the following components:聚丙烯树脂 20-80份；20-80 parts of polypropylene resin;相容剂 1-20份；Compatibilizer 1-20 copies;增强纤维 10-40份；Reinforcing fiber 10-40 copies;所述增强纤维包括组分I、组分II和组分Ⅲ，其中：The reinforcing fiber includes component I, component II and component III, wherein:组分I：由长度为小于0.1mm的增强纤维组成，其占增强纤维的根数百分比为10-20％，优选为14-18％；Component I: It is composed of reinforcing fibers with a length of less than 0.1 mm, and the percentage of the reinforcing fibers is 10-20%, preferably 14-18%;组分II：由长度为0.1mm-0.3mm的增强纤维组成，其占增强纤维的根数百分比为50-75％，优选为60-70％；Component II: It is composed of reinforcing fibers with a length of 0.1 mm-0.3 mm, and the percentage of the reinforcing fibers is 50-75%, preferably 60-70%;组分Ⅲ：由长度为0.4mm-0.8mm的增强纤维组成，其占增强纤维的根数百分比为5-40％，优选为15-25％。Component III: It is composed of reinforcing fibers with a length of 0.4mm-0.8mm, and the percentage of the reinforcing fibers is 5-40%, preferably 15-25%.
- 根据权利要求1所述的改性聚丙烯材料，其特征在于，所述增强纤维选自玻璃纤维、石英纤维、玄武岩纤维中的一种或几种的混合；所述增强纤维的平均直径为5-20微米。The modified polypropylene material according to claim 1, wherein the reinforcing fibers are selected from one or a mixture of glass fibers, quartz fibers, and basalt fibers; the average diameter of the reinforcing fibers is 5 -20 microns.
- 根据权利要求1所述的改性聚丙烯材料，其特征在于，所述聚丙烯树脂选自均聚聚丙烯、嵌段共聚聚丙烯、无规共聚聚丙烯中的一种或几种的混合。The modified polypropylene material according to claim 1, wherein the polypropylene resin is selected from one or a mixture of homopolypropylene, block copolymerized polypropylene and random copolymerized polypropylene.
- 根据权利要求1所述的改性聚丙烯材料，其特征在于，所述相容剂为极性单体与聚丙烯的接枝聚合物，其中极性单体选自马来酸酐、丙烯酸、丙烯酸酯类衍生物中的一种或几种的混合物。The modified polypropylene material according to claim 1, wherein the compatibilizer is a graft polymer of a polar monomer and polypropylene, wherein the polar monomer is selected from maleic anhydride, acrylic acid, acrylic acid One or more mixtures of ester derivatives.
- 根据权利要求1-4任一项所述的改性聚丙烯材料的制备方法，其特征在于，包括如下步骤：按照配方含量称量各组分，并将除增强纤维外的各组分混合均匀，随后将混合物加入双螺杆挤出机的主喂料系统；同时将增强纤维加入双螺杆挤出机的侧喂料系统，然后通过双螺杆挤出机熔融共混、挤出造粒制备得到改性聚丙烯材料。The preparation method of modified polypropylene material according to any one of claims 1-4, characterized in that it comprises the steps of: weighing each component according to the formula content, and mixing each component except the reinforcing fiber uniformly Then, the mixture is added to the main feeding system of the twin-screw extruder; at the same time, the reinforcing fibers are added to the side feeding system of the twin-screw extruder, and then the compound is prepared by melt-blending and extrusion granulation through the twin-screw extruder. Polypropylene material.
- 根据权利要求5所述的改性聚丙烯材料的制备方法，其特征在于，所述双螺杆挤出机的侧喂料系统可以调节位置，增强纤维在第一至第十区进入螺杆，以及在挤出机模头后再加入，然后和聚丙烯熔体直接结合。The method for preparing modified polypropylene material according to claim 5, wherein the side feeding system of the twin-screw extruder can adjust the position, and the reinforcing fibers enter the screw in the first to tenth zones, and in the It is added after the extruder die, and then directly combined with the polypropylene melt.
- 根据权利要求5或6所述的改性聚丙烯材料的制备方法，其特征在于，所述双螺杆挤出机一至二区温度为120℃-160℃，三至五区温度为180℃-300℃，五至十区温度为180℃-300℃，螺杆转速为300rpm-600rpm。The method for preparing modified polypropylene material according to claim 5 or 6, wherein the temperature of the first to second zones of the twin-screw extruder is 120°C-160°C, and the temperature of the third to fifth zones is 180°C-300°C ℃, the temperature of five to ten zones is 180℃-300℃, and the screw speed is 300rpm-600rpm.
- 根据权利要求1-4任一项所述的改性聚丙烯材料在吹塑或吸塑场合中的应用。Application of the modified polypropylene material according to any one of claims 1 to 4 in blow molding or suction molding.
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