WO2024067000A1 - 一种聚乙烯组合物及其制备方法和应用 - Google Patents

一种聚乙烯组合物及其制备方法和应用 Download PDF

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WO2024067000A1
WO2024067000A1 PCT/CN2023/117386 CN2023117386W WO2024067000A1 WO 2024067000 A1 WO2024067000 A1 WO 2024067000A1 CN 2023117386 W CN2023117386 W CN 2023117386W WO 2024067000 A1 WO2024067000 A1 WO 2024067000A1
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parts
polyethylene composition
polyethylene
light
resin
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PCT/CN2023/117386
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English (en)
French (fr)
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程书文
陆湛泉
何浏炜
余启生
李其龙
孙华旭
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武汉金发科技有限公司
武汉金发科技企业技术中心有限公司
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Publication of WO2024067000A1 publication Critical patent/WO2024067000A1/zh

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    • 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
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/24—Crystallisation aids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/062—HDPE
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Definitions

  • the invention belongs to the field of polymer materials, and specifically relates to a polyethylene composition and a preparation method and application thereof.
  • Plastic laser welding is a relatively convenient and efficient polymer material welding method developed in recent years. It has a fast welding speed, and the welds are precise, firm, and well sealed, which has a wide range of application prospects. In addition, due to the non-contact nature of the laser, it will not pollute the working conditions of the parts, and can achieve high welding quality and maintain the beauty of the welds, extending the application advantages of polymer materials.
  • Plastic laser welding usually requires that one of the two plastic parts to be welded (part 1) has a certain near-infrared (wavelength 900-1100nm) transmittance, and the other part (part 2) has a significant blocking effect on the light beam, so that the upper part 1 can pass enough laser light, and the lower part 2 can absorb enough laser energy. The laser energy is absorbed, which increases the temperature of the lower material, melts the plastic on the contact surface of the upper and lower layers, and completes the welding after cooling.
  • heterogeneous polymers such as polyolefin PE and polyester
  • their laser transmission weldability is poor, and they cannot even be welded together, which also brings challenges and difficulties to the development and promotion of laser transmission welding. Therefore, considering the laser weldability of heterogeneous materials polyethylene and polyester, the development of polyethylene composite materials with high laser welding strength and capable of laser welding of heterogeneous materials has important technical value and market potential.
  • the purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a polyethylene composition and a preparation method and application thereof.
  • the polyethylene composition can overcome the problem that laser welding cannot be achieved between dissimilar materials due to large differences in polarity and compatibility, and can achieve laser welding of the polyethylene composition and polyester material, while effectively improving the laser welding strength of the light-transmitting layer (polyethylene composition) and the light-absorbing layer (polyester material).
  • a polyethylene composition comprising the following components by weight: 60-99 parts of high-density polyethylene resin, 1-40 parts of polyester resin, 0.5-15 parts of interface regulation inducer, infrared transparent Accelerator 0.5-3 parts, organic color powder 0.1-2 parts, antioxidant 0.1-2 parts, lubricant 0.1-2 parts, processing aid 0.1-2 parts.
  • the polyethylene composition comprises the following components in parts by weight: 70-80 parts of high-density polyethylene resin, 20-30 parts of polyester resin, 5-10 parts of interface regulation inducer, 1-2 parts of infrared transmission promoter, 0.2-1 parts of organic color powder, 0.2-0.5 parts of antioxidant, and 0.2-0.5 parts of lubricant.
  • the polyethylene composition comprises at least one of the following (1) and (2):
  • the melt index of the high-density polyethylene resin under the test conditions of 190°C and 2.16kg is 1 to 30g/10min; more preferably, the melt index of the high-density polyethylene resin under the test conditions of 190°C and 2.16kg is 10 to 25g/10min;
  • the polyester resin is an aliphatic polyester, more preferably, the aliphatic polyester is polybutylene terephthalate and/or polyethylene terephthalate, and has an intrinsic viscosity of 0.9 to 1.1 dl/g (25° C.).
  • the polyethylene composition comprises at least one of the following (1) to (3):
  • the interface regulation inducer is a polar monomer graft polymer
  • the infrared transmission promoter is one or more of unsubstituted dibenzylidene sorbitol, (1,3,2,4-di(p-methyldibenzylidene) sorbitol, condensation product of n-propylbenzaldehyde-n-propyl sorbitol, 1,2,3-trideoxy-4,6:5,7-bis-O-[(4-propylphenyl)methylene]-nonanol;
  • the organic color powder is organic dye black powder.
  • the polymer in the polar monomer grafted polymer is one or more of polyethylene, polypropylene, ethylene-octene copolymer, and ethylene-butene copolymer; the polar monomer in the polar monomer grafted polymer is one or more of maleic anhydride and its derivatives, acrylic acid and its ester derivatives.
  • the polyethylene composition comprises at least one of the following (1) to (2):
  • the antioxidant is one or more of phenol, phosphite, divalent sulfur or hindered amine antioxidants
  • the lubricant is one or more of amides, metal soaps and low molecular weight esters
  • the low molecular weight esters may be one or more of solid paraffin, liquid paraffin or low molecular weight polyolefin wax.
  • a method for preparing the polyethylene composition comprises the following steps:
  • the components are weighed according to the formula ratio and mixed evenly to obtain a mixed material.
  • the mixed material is kneaded, melted, homogenized, and then extruded and granulated to obtain a polyethylene composition.
  • the extrusion granulation adopts a twin-screw extruder
  • the aspect ratio of the extrusion screw is 36-48:1
  • the temperature of the extruder is set at 80-120°C in zone 1, 180-200°C in zones 2-5, and 200-230°C in other zones.
  • the polyethylene composition prepared by the present invention is used to realize the light-transmitting layer in laser welding of two plastic parts, and is prepared by modifying high-density polyethylene resin (HDPE) by introducing components such as polyester resin, interface regulation inducer, infrared transmission promoter, etc.
  • HDPE high-density polyethylene resin
  • the substrate polarity of high-density polyethylene resin is greatly improved, thereby achieving effective laser welding with polyester material (light-absorbing layer).
  • the interface regulation inducer in the present invention plays the role of an interface bridge, improves the compatibility of the interface between the high-density polyethylene resin and the polyester resin, and forms the basis of a stable polar HDPE/polyester alloy system; at the same time, the interface regulation inducer can also synergize with the infrared transmission promoter.
  • the interface regulation inducer can form crystal nuclei in the matrix under the action of the infrared transmission promoter, and guide the rapid formation of crystals, thereby realizing heterogeneous nucleation-induced crystallization, significantly improving the light transmittance of the HDPE/polyester alloy system, especially the light transmittance of near-infrared light, and promoting the polyethylene composition (light-transmitting layer) of the present invention and the polyester material (light-absorbing layer) to achieve perfect welding of heterogeneous polymer materials.
  • organic colorant to the polyethylene composition of the present invention will not have a significant impact on the light transmittance of the polyethylene composition, and the use of black organic colorant can ensure that the colors of the light-transmitting layer and the light-absorbing layer remain consistent, and the composite material after laser welding can meet the requirements of black materials.
  • the present invention has the following beneficial effects:
  • the present invention uses polyester resin, interface regulation inducer, infrared transmission promoter and other components to modify high-density polyethylene resin to obtain a polyethylene composition.
  • the polarity of the modified high-density polyethylene resin is greatly improved, so that it can be laser welded with polar polyester materials.
  • antioxidants and lubricants are commercially available, and the same antioxidants and lubricants are used in parallel experiments.
  • the preparation method of the polyethylene composition of Examples 1-12 and Comparative Examples 1-5 comprises the following steps:
  • the aspect ratio of the extrusion screw is 40:1
  • the temperature of the extruder is set at 100°C for zone 1, 190°C for zones 2-5, and 220°C for other zones, and after mixing, melting, and homogenizing, extrude and granulate to obtain a polyethylene composition.
  • Laser transmittance test Injection mold a 100mm*100mm*2mm square plate and test the transmittance of near-infrared light (wavelength 900 ⁇ 1100nm) using an infrared transmittance tester;
  • the polyethylene composition prepared in the embodiment of the present invention can have a high transmittance as a light-transmitting layer for laser welding, and the transmittance can reach 60% to 82%, while ensuring that the welding strength with the light-absorbing layer (polyester material) is within the range of 492 to 781N, so that laser welding of polyethylene and polyester materials with large differences in polarity and compatibility can be realized.
  • Example 3 and Comparative Example 1 It can be seen from the experimental data of Example 3 and Comparative Example 1 that the polyethylene composition (light-transmitting layer) obtained by adding only the interface regulation inducer and the infrared transmission promoter to the high-density polyethylene resin cannot be laser welded with the polyester material (light-absorbing layer); it can be seen from Example 3 and Comparative Example 2 that the laser welding effect of the light-transmitting layer and the light-absorbing layer of the polyethylene composition obtained by modifying the high-density polyethylene resin with other polar materials such as polyamide resin is not good; Comparative Examples 3 to 5 lack one or two of the interface regulation inducer and the infrared transmission promoter, resulting in the polyethylene composition having a poor light transmittance and laser welding strength with the polyester material, which are significantly worse than Example 3 of the present invention.
  • the invention introduces polyester resin, interface regulation inducing agent, infrared transmission promoter and other components into high-density polyethylene resin for modification, which can effectively improve the transmittance of the final polyethylene composition (translucent layer) and the laser welding strength between the light-absorbing layer.
  • the invention makes it possible to laser weld two polyethylene and polyester materials with large differences in polarity and compatibility by modifying the high-density polyethylene resin, further broadening the application range of polyethylene materials.

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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)

Abstract

一种聚乙烯组合物及其制备方法和应用，属于高分子材料领域。所述聚乙烯组合物包括以下重量份计的组分：高密度聚乙烯树脂60-99份、聚酯树脂1-40份、界面调控诱导剂0.5-15份、透红外促进剂0.5-3份、有机色粉0.1-2份、抗氧剂0.1-2份、润滑剂0.1-2份。制得的聚乙烯组合物，能够克服异种材料间因存在极性、相容性差异大而无法实现激光焊接的问题，实现聚乙烯和聚酯材料的激光焊接，同时制得的聚乙烯组合物作为激光焊接的透光层能够具有较高的透光率，与吸光层也能够达到较高的焊接强度。

Description

一种聚乙烯组合物及其制备方法和应用 技术领域
本发明属于高分子材料领域，具体涉及一种聚乙烯组合物及其制备方法和应用。
背景技术
塑料激光焊接是近阶段发展起来的一种较为便捷、高效的高分子材料焊接方式，焊接速度快，生成的焊缝精密、牢固、密封性好，具有广泛的应用前景；此外，由于激光的非接触性，也不会对零部件工况产生污染，可实现高的焊接质量以及保持焊缝的美观，延伸了高分子材料的应用优势。塑料激光焊接通常要求被焊接的两个塑料制件有一个制件(制件1)具有一定的近红外(波长900～1100nm)透光率，另一个制件(制件2)对光束有明显的阻隔作用，这样就可以保证上层制件1能够透过足够的激光，下层制件2能够吸收足够的激光能量，激光能量被吸收使得下层材料温度升高，熔化上下层接触面的塑料，冷却后进而完成焊接。
塑料件激光焊接技术通常有两种，一种是同种高分子材料通过激光焊接到一起、如透红外PE(透光层)与吸光PE(吸光层)经激光连接为一体；另一种是异种高分子材料经激光焊接为一体、如PP(吸光层)与POM(透光层)形成美观的激光焊缝。异种高分子材料组合件综合了两类材料的优势、具体较优的综合性能，应用范围和前景也更为广泛。由于异种聚合物(如聚烯烃PE和聚酯)之间的极性、相容性等差异较大，其激光透射可焊接性能较差，甚至不能焊接在一起，这也给激光透射焊接的发展与推广带来了挑战与困难。因此考虑到异种材料聚乙烯和聚酯两者可激光焊接组合性，开发激光焊接强度高、可实现异种材料激光焊接的聚乙烯复合材料具有重要技术价值和市场潜力。
发明内容
本发明的目的在于克服上述现有技术的不足之处，提供一种聚乙烯组合物及其制备方法和应用。该聚乙烯组合物，能够克服异种材料间因存在极性、相容性差异大而无法实现激光焊接的问题，实现聚乙烯组合物和聚酯材料的激光焊接，同时能够有效提高透光层(聚乙烯组合物)与吸光层(聚酯材料)的激光焊接强度。
为了达到上述目的，本发明采用以下技术方案：一种聚乙烯组合物，包括以下重量份计的组分：高密度聚乙烯树脂60-99份、聚酯树脂1-40份、界面调控诱导剂0.5-15份、透红外 促进剂0.5-3份、有机色粉0.1-2份、抗氧剂0.1-2份、润滑剂0.1-2份、加工助剂0.1-2份。
优选地，所述聚乙烯组合物，包括以下重量份计的组分：高密度聚乙烯树脂70-80份、聚酯树脂20～30份、界面调控诱导剂5-10份、透红外促进剂1-2份、有机色粉0.2-1份、抗氧剂0.2-0.5份、润滑剂0.2-0.5份。
优选地，所述的聚乙烯组合物，至少包含以下(1)和(2)中的一项：
(1)所述高密度聚乙烯树脂在190℃、2.16kg测试条件下的熔融指数为1～30g/10min；更优选地，所述高密度聚乙烯树脂在190℃、2.16kg测试条件下的熔融指数为10～25g/10min；
(2)所述聚酯树脂为脂肪族聚酯，更优选地，所述脂肪族聚酯为聚对苯二甲酸丁二酯和/或聚对苯二甲酸乙二酯，特性粘度为0.9～1.1dl/g(25℃)。
优选地，所述的聚乙烯组合物，至少包含以下(1)～(3)中的一项：
(1)所述界面调控诱导剂为极性单体接枝聚合物；
(2)所述透红外促进剂为无取代的二苄叉山梨醇、(1,3,2,4-二(对甲基二苄叉)山梨醇、正丙基苯甲醛-正丙基山梨醇的缩合物、1,2,3-三脱氧-4,6:5,7-双-O-[(4-丙苯基)亚甲基]-壬醇中的一种或几种；
(3)所述有机色粉为有机染料黑色粉。
优选地，所述极性单体接枝聚合物中聚合物为聚乙烯、聚丙烯、乙烯-辛烯共聚物、乙烯-丁烯共聚物中的一种或几种；所述极性单体接枝聚合物中极性单体为马来酸酐及其衍生物、丙烯酸及其酯类衍生物中的一种或几种。
优选地，所述的聚乙烯组合物，至少包含以下(1)～(2)中的一项：
(1)所述抗氧剂为酚类、亚磷酸酯类、二价硫类或受阻胺类抗氧剂中的一种或几种；
(2)所述润滑剂为酰胺类、金属皂类和低分子酯类中的一种或几种；
所述低分子酯类可以为固体石蜡、液体石蜡或低分子聚烯烃蜡中的一种或几种。
一种所述聚乙烯组合物的制备方法，包括以下步骤：
按配方比例称量各组分，并将各组分混合均匀，得到混合物料，将混合物料进行混炼、熔融、均化后挤出造粒，即得聚乙烯组合物。
优选地，所述挤出造粒采用双螺杆挤出机，挤出螺杆长径比为36-48:1，挤出机温度设置按1区80-120℃，2-5区180-200℃，其他区200-230℃。
一种所述聚乙烯组合物在电子器件、信息通讯领域中的应用。
本发明制备得到的聚乙烯组合物是实现激光焊接两个塑料制件中的透光层，通过引入聚酯树脂、界面调控诱导剂、透红外促进剂等组分对高密度聚乙烯树脂(HDPE)进行改性制得， 大大提高了高密度聚乙烯树脂的基材极性，从而实现与聚酯材料(吸光层)的有效激光焊接。
本发明中的界面调控诱导剂，发挥了界面桥梁作用、提高了高密度聚乙烯树脂与聚酯树脂界面的相容性，形成稳定的极性HDPE/聚酯合金体系基础；同时，界面调控诱导剂还能够与透红外促进剂发生协同作用，界面调控诱导剂作为HDPE、聚酯树脂的异物，在透红外促进剂的作用下能够在基体中形成晶核，透导快速形成结晶，实现异相成核诱导结晶作用，显著提升HDPE/聚酯合金体系的透光率，尤其是对近红外光的透光率，促进本发明聚乙烯组合物(透光层)与聚酯材料(吸光层)实现异种高分子材料的完美焊接。
另外，本发明在聚乙烯组合物中加入有机色粉，不会对聚乙烯组合物的透光率产生较大的影响，且采用黑色有机色粉时可以满足透光层和吸光层颜色保持一致，激光焊接后的复合材料能够满足黑色材料要求。
与现有技术相比，本发明具有以下有益效果：
(1)本发明选用聚酯树脂、界面调控诱导剂、透红外促进剂等组分对高密度聚乙烯树脂进行改性处理，得到聚乙烯组合物，改性处理后的高密度聚乙烯树脂具有的极性得到极大的提升，使其能够实现与极性聚酯材料的激光焊接。
(2)本发明中界面调控诱导剂与透红外促进剂间的协同作用，有效提高了聚乙烯组合物的近红外光透过率，显著增强透光层(聚乙烯组合物)与吸光层的激光焊接强度。
具体实施方式
下面将结合本发明实施例，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做出创造性劳动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。
下述实施例和对比例中，所使用的实验方法如无特殊说明，均为常规方法，如无特别说明，抗氧剂、润滑剂均通过市售获得，且平行实验中使用的是相同的抗氧剂、润滑剂。
实施例及对比例所用原料说明见表1。
表1

实施例1-12和对比例1-5
实施例1-12和对比例1-5的聚乙烯组合物，组分、重量份如表2和表3所示。
实施例1-12和对比例1-5的聚乙烯组合物的制备方法包括如下步骤：
按配方比例称量各组分，并将各组分混合均匀，得到混合物料，将混合物料加入双螺杆挤出机，挤出螺杆长径比为40:1，挤出机温度设置按1区100℃，2-5区190℃，其他区220℃，经过混炼、熔融、均化后挤出造粒，即得聚乙烯组合物。
表2实施例中组分用量(重量份)

表3对比例中组分用量(重量份)
性能测试
将实施例1-12及对比例1-5制备的聚乙烯组合物进行相关性能测试，测试方法和标准如下所述，实验结果如表4所示。
(1)激光透过率测试：注塑100mm*100mm*2mm方板，通过红外透光率测试仪测试近红外光(波长900～1100nm)透过率；
(2)焊接强度测试：注塑125mm*13mm*2mm样条，采用激光焊接仪进行激光焊接，其中上层为吸光样条，下层为透光样条。透光样条为本发明制得的聚乙烯组合物，吸光样条所用材料为聚对苯二甲酸丁二酯聚酯加入0.2％炭黑后制得。焊接时两根样条搭接，重叠长度为 40mm，接线条数为3条，焊线宽度为2mm、间隔为12mm，激光其发射波长为915nm，功率为20W，移动速度为20mm/s。每组焊接测试5根样条，焊接后常温下静置24小时，采用万能试验机进行拉伸测试得到拉脱力数据，最终记录的数据为平均焊接强度。
表4性能测试结果
从表4中的数据可以得知，本发明实施例制备得到的聚乙烯组合物作为激光焊接的透光层能够具有较高的透光率，透光率能够实现60％～82％，同时保证与吸光层(聚酯材料)达到492～781N范围内的焊接强度，使激光焊接极性和相容性相差较大的聚乙烯和聚酯材料得以实现。
从实施例3与对比例1的实验数据可以得知，只在高密度聚乙烯树脂中加入界面调控诱导剂、透红外促进剂制得的聚乙烯组合物(透光层)并无法与聚酯材料(吸光层)实现激光焊接；从实施例3与对比例2中得知，选用其他的极性材料如聚酰胺树脂对高密度聚乙烯树脂进行改性，制得的聚乙烯组合物透光层与吸光层的激光焊接效果并不好；对比例3～5中缺少界面调控诱导剂、透红外促进剂中的一种或两种，导致制得的聚乙烯组合物所具有的透光率以及与聚酯材料激光焊接强度均较差，且明显差于本发明实施例3。
从以上实验结果可以得知，本发明中通过在高密度聚乙烯树脂中引入聚酯树脂、界面调控诱导剂、透红外促进剂等组分进行改性，能够有效提升最终制得的聚乙烯组合物(透光层)的透光率以及和吸光层间的激光焊接强度。本发明通过对高密度聚乙烯树脂的改性使得两种极性、相容性差距较大的聚乙烯和聚酯材料的激光焊接成为可能，进一步扩宽了聚乙烯材料的应用范围。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (10)

  1. 一种聚乙烯组合物，其特征在于，包括以下重量份计的组分：高密度聚乙烯树脂60-99份、聚酯树脂1-40份、界面调控诱导剂0.5-15份、透红外促进剂0.5-3份、有机色粉0.1-2份、抗氧剂0.1-2份、润滑剂0.1-2份。
  2. 如权利要求1所述的聚乙烯组合物，其特征在于，包括以下重量份计的组分：高密度聚乙烯树脂70-80份、聚酯树脂20～30份、界面调控诱导剂5-10份、透红外促进剂1-2份、有机色粉0.2-1份、抗氧剂0.2-0.5份、润滑剂0.2-0.5份。
  3. 如权利要求1所述的聚乙烯组合物，其特征在于，至少包含以下(1)和(2)中的一项：(1)所述高密度聚乙烯树脂在190℃、2.16kg测试条件下的熔融指数为1～30g/10min；
    (2)所述聚酯树脂为脂肪族聚酯。
  4. 如权利要求3所述的聚乙烯组合物，其特征在于，所述脂肪族聚酯为聚对苯二甲酸丁二酯和/或聚对苯二甲酸乙二酯，特性粘度为0.9～1.1dl/g。
  5. 如权利要求1所述的聚乙烯组合物，其特征在于，至少包含以下(1)～(3)中的一项：(1)所述界面调控诱导剂为极性单体接枝聚合物；
    (2)所述透红外促进剂为无取代的二苄叉山梨醇、(1,3,2,4-二(对甲基二苄叉)山梨醇、正丙基苯甲醛-正丙基山梨醇的缩合物、1,2,3-三脱氧-4,6:5,7-双-O-[(4-丙苯基)亚甲基]-壬醇中的一种或几种；
    (3)所述有机色粉为有机染料黑色粉。
  6. 如权利要求5所述的聚乙烯组合物，其特征在于，所述极性单体接枝聚合物中聚合物为聚乙烯、聚丙烯、乙烯-辛烯共聚物、乙烯-丁烯共聚物中的一种或几种；所述极性单体接枝聚合物中极性单体为马来酸酐及其衍生物、丙烯酸及其酯类衍生物中的一种或几种。
  7. 如权利要求1所述的聚乙烯组合物，其特征在于，至少包含以下(1)和(2)中的一项：(1)所述抗氧剂为酚类、亚磷酸酯类、二价硫类和受阻胺类抗氧剂中的一种或几种；
    (2)所述润滑剂为酰胺类、金属皂类和低分子酯类中的一种或几种。
  8. 一种如权利要求1～7任一所述聚乙烯组合物的制备方法，其特征在于，包括以下步骤：
    按配方比例称量各组分，并将各组分混合均匀，得到混合物料，将混合物料进行混炼、熔融、均化后挤出造粒，即得聚乙烯组合物。
  9. 如权利要求8所述制备方法，其特征在于，所述挤出造粒采用双螺杆挤出机，挤出螺杆长径比为36-48:1，挤出机温度设置按1区80-120℃，2-5区180-200℃，其他区200-230℃。
  10. 一种如权利要求1～7任一所述聚乙烯组合物在电子器件、信息通讯领域中的应用。
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