WO2019047405A1 - 一种汽车保险杠用复合材料及其制备方法 - Google Patents

一种汽车保险杠用复合材料及其制备方法 Download PDF

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WO2019047405A1
WO2019047405A1 PCT/CN2017/115069 CN2017115069W WO2019047405A1 WO 2019047405 A1 WO2019047405 A1 WO 2019047405A1 CN 2017115069 W CN2017115069 W CN 2017115069W WO 2019047405 A1 WO2019047405 A1 WO 2019047405A1
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parts
composite material
stirring
antioxidant
plasticizer
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PCT/CN2017/115069
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French (fr)
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冉宏敏
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冉宏敏
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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
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • 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
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • the invention belongs to the field of materials, and particularly relates to a composite material for automobile bumpers and a preparation method thereof.
  • the front and rear ends of the car are equipped with bumpers, which not only have decorative functions, but also are safety devices that absorb and mitigate external impact forces, protect the body and protect the body and occupant safety functions.
  • the outer plate and cushioning material of the bumper are made of plastic, and the beam is stamped into a U-shaped groove by a cold-rolled sheet having a thickness of about 1.5 mm; the outer plate and the cushioning material are attached to the beam, and the beam is screwed to the frame longitudinal beam. Can be removed at any time.
  • Plastics used in such plastic bumpers are generally made of polyester and polypropylene.
  • the bumper has the functions of safety protection, decorating the vehicle and improving the aerodynamic characteristics of the vehicle. From the safety point of view, when a car has a low-speed collision accident, it can play a buffering role to protect the front and rear body; it can play a role in protecting pedestrians in the event of an accident with pedestrians. From the appearance, it is decorative and has become an important part of the decoration of the car. At the same time, the car bumper has a certain aerodynamic effect.
  • the plastic part is usually made of a combination of existing PP, POE, talc, etc., but currently commonly used materials have aging, impact resistance, low tensile strength, and elongation at break. Low question.
  • the object of the present invention is to provide a composite material for a bumper for automobiles and a preparation method thereof for overcoming the deficiencies of the prior art, and to improve the mechanical properties of the material by a specific compounding modification of the components.
  • the utility model relates to a composite material for automobile bumpers, which comprises the following components in parts by weight: polycarbonate 20-30 parts, polypropylene 5-10 parts, 2-acrylamide-2-methylpropanesulfonic acid 0.2-0.5 parts , 2-4 parts of diaminodiphenylmethane, 1-3 parts of magnesium stearate, 2-4 parts of polyvinyl alcohol, 1-2 parts of dimethyl diallyl ammonium chloride, 1,3-propyl sulfonate
  • the acid lactone is 0.5-1 part
  • the antioxidant is 0.5-0.8 part
  • the plasticizer is 2-4 parts.
  • the composite material for the automobile bumper, the antioxidant is 2,6-di-tert-butyl-p-methylphenol.
  • the plasticizer is diisononyl phthalate.
  • the method for preparing a composite material for an automobile bumper includes the following steps:
  • Step 1 weighing each component by weight
  • Step 2 adding polycarbonate, polypropylene, magnesium stearate, polyvinyl alcohol and dimethyl diallyl ammonium chloride to the reaction kettle, stirring and mixing, and then raising the temperature to 70-90 ° C under nitrogen protection conditions. , for 20-30 minutes, to obtain a reaction mixture;
  • Step 3 adding 2-acrylamide-2-methylpropanesulfonic acid and diaminodiphenylmethane to the reaction mixture, heating to 40-50 ° C under nitrogen protection for 60-90 minutes, then adding 1 , 3-propyl sultone, antioxidant and plasticizer, stirred and mixed, and then extruded through a twin-screw extruder to obtain a composite material for automobile bumpers.
  • the stirring speed of stirring and mixing in the step 2 is 180-200 rpm, and the stirring time is 10-15 minutes.
  • the extrusion temperature in the step 3 is 180-230 ° C.
  • the composite material for automobile bumper provided by the invention is modified by adding polycarbonate and polypropylene as a base material, and finally a composite material with good performance is obtained, which has good mechanical properties.
  • the tensile strength reaches 47 MPa or more
  • the bending strength reaches 56 MPa or more
  • the elongation at break reaches 460% or more
  • the notched impact strength reaches 72 KJ/m 2 or more
  • the impact strength of the cantilever beam reaches 756 J/M or more. Goodly used in the car bumper system.
  • a composite material for automobile bumpers comprising the following components in parts by weight: 20 parts of polycarbonate, 5 parts of polypropylene, 0.2 parts of 2-acrylamide-2-methylpropanesulfonic acid, diaminodiphenylmethane 2 parts, 1 part magnesium stearate, 2 parts polyvinyl alcohol, 1 part dimethyl diallyl ammonium chloride, 0.5 part 1,3-propyl sultone, antioxidant 2, 6-two 0.5 parts of tert-butyl-p-methylphenol and 2 parts of plasticizer diisodecyl phthalate.
  • the preparation method of the composite material for automobile bumper described above includes the following steps:
  • Step 1 weighing each component by weight
  • Step 2 adding polycarbonate, polypropylene, magnesium stearate, polyvinyl alcohol and dimethyl diallyl ammonium chloride to the reaction kettle, stirring and mixing, stirring speed is 180 rpm, stirring time is 10 minutes And then heating to 70 ° C under nitrogen protection conditions, held for 20 minutes, to obtain a reaction mixture;
  • Step 3 Add 2-acrylamide-2-methylpropanesulfonic acid and diaminodiphenylmethane to the reaction mixture, heat to 40 ° C under nitrogen atmosphere for 60 minutes, then add 1,3-propane
  • the sulfonate lactone, the antioxidant and the plasticizer are stirred and mixed and then extruded through a twin-screw extruder at an extrusion temperature of 180-230 ° C to obtain a composite material for a bumper for automobiles.
  • a composite material for automobile bumpers comprising the following components in parts by weight: 25 parts of polycarbonate, 6 parts of polypropylene, 0.3 parts of 2-acrylamide-2-methylpropanesulfonic acid, diaminodiphenylmethane 2 parts, 2 parts of magnesium stearate, 3 parts of polyvinyl alcohol, 1 part of dimethyl diallyl ammonium chloride, 0.7 parts of 1,3-propyl sultone, antioxidant 2, 6-two 0.6 parts of tert-butyl-p-methylphenol and 3 parts of plasticizer diisodecyl phthalate.
  • the preparation method of the composite material for automobile bumper described above includes the following steps:
  • Step 1 weighing each component by weight
  • Step 2 adding polycarbonate, polypropylene, magnesium stearate, polyvinyl alcohol and dimethyl diallyl ammonium chloride to the reaction kettle, stirring and mixing, stirring speed is 190 rpm, stirring time is 12 minutes And then heating to 75 ° C under nitrogen protection conditions, held for 26 minutes, to obtain a reaction mixture;
  • Step 3 Add 2-acrylamide-2-methylpropanesulfonic acid and diaminodiphenylmethane to the reaction mixture, heat to 43 ° C under nitrogen atmosphere for 7 minutes, then add 1,3-propane
  • the sulfonate lactone, the antioxidant and the plasticizer are stirred and mixed and then extruded through a twin-screw extruder at an extrusion temperature of 180-230 ° C to obtain a composite material for a bumper for automobiles.
  • a composite material for automobile bumpers comprising the following components in parts by weight: 27 parts of polycarbonate, 8 parts of polypropylene, 0.4 parts of 2-acrylamide-2-methylpropanesulfonic acid, diaminodiphenylmethane 4 parts, 3 parts of magnesium stearate, 3 parts of polyvinyl alcohol, 2 parts of dimethyl diallyl ammonium chloride, 0.9 parts of 1,3-propyl sultone, antioxidant 2, 6-two 0.7 parts of tert-butyl-p-methylphenol and 3 parts of plasticizer diisodecyl phthalate.
  • the preparation method of the composite material for automobile bumper described above includes the following steps:
  • Step 1 weighing each component by weight
  • Step 2 adding polycarbonate, polypropylene, magnesium stearate, polyvinyl alcohol and dimethyl diallyl ammonium chloride to the reaction kettle, stirring and mixing, stirring speed is 195 rpm, stirring time is 13 minutes And then raising the temperature to 80 ° C under nitrogen protection conditions, for 26 minutes, to obtain a reaction mixture;
  • Step 3 Add 2-acrylamido-2-methylpropanesulfonic acid and diaminodiphenylmethane to the reaction mixture, heat to 48 ° C under nitrogen atmosphere for 85 minutes, then add 1,3-propane
  • the sulfonate lactone, the antioxidant and the plasticizer are stirred and mixed and then extruded through a twin-screw extruder at an extrusion temperature of 180-230 ° C to obtain a composite material for a bumper for automobiles.
  • a composite material for automobile bumpers comprising the following components in parts by weight: 30 parts of polycarbonate, 10 parts of polypropylene, 0.5 parts of 2-acrylamide-2-methylpropanesulfonic acid, diaminodiphenylmethane 4 parts, 3 parts of magnesium stearate, 4 parts of polyvinyl alcohol, 2 parts of dimethyl diallyl ammonium chloride, 1 part of 1,3-propyl sultone, antioxidant 2, 6-two 0.8 parts of tert-butyl-p-methylphenol and 4 parts of plasticizer diisodecyl phthalate.
  • the preparation method of the composite material for automobile bumper described above includes the following steps:
  • Step 1 weighing each component by weight
  • Step 2 adding polycarbonate, polypropylene, magnesium stearate, polyvinyl alcohol and dimethyl diallyl ammonium chloride to the reaction kettle, stirring and mixing, stirring speed is 200 rpm, stirring time is 15 minutes And then raise the temperature under nitrogen protection to At 90 ° C, for 30 minutes, to obtain a reaction mixture;
  • Step 3 Add 2-acrylamide-2-methylpropanesulfonic acid and diaminodiphenylmethane to the reaction mixture, heat to 50 ° C under nitrogen atmosphere for 90 minutes, then add 1,3-propane
  • the sulfonate lactone, the antioxidant and the plasticizer are stirred and mixed and then extruded through a twin-screw extruder at an extrusion temperature of 180-230 ° C to obtain a composite material for a bumper for automobiles.
  • the composite material for automobile bumper provided by the present invention has good mechanical properties, wherein the tensile strength reaches 47 MPa or more, the bending strength reaches 56 MPa or more, and the elongation at break reaches 460% or more.
  • the impact strength reaches 72KJ/m 2 or more, and the cantilever beam impact strength reaches 756J/M or more, which can be well applied to the automobile bumper system.

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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

一种汽车保险杠用复合材料及其制备方法，复合材料包括如下组分：聚碳酸酯，聚丙烯，2-丙烯酰胺-2-甲基丙磺酸，二氨基二苯甲烷，硬脂酸镁，聚乙烯醇，二甲基二烯丙基氯化铵，1，3-丙基磺酸内酯，抗氧剂和增塑剂。制备方法为将聚碳酸酯，聚丙烯，硬脂酸镁，聚乙烯醇和二甲基二烯丙基氯化铵加入到反应釜中，搅拌混合，然后在氮气保护条件下升温并保持一定时间，再将2-丙烯酰胺-2-甲基丙磺酸和二氨基二苯甲烷加入，在氮气保护条件下加热并保持一定时间后加入1，3-丙基磺酸内酯，抗氧剂和增塑剂，搅拌混合后通过双螺杆挤出机挤出，得到汽车保险杠用复合材料。该复合材料具有良好的拉伸强度与冲击强度。

Description

一种汽车保险杠用复合材料及其制备方法 技术领域
本发明属于材料领域，具体涉及一种汽车保险杠用复合材料及其制备方法。
背景技术
汽车前后端装有保险杠(bumper)，不仅有装饰功能，更重要是吸收和缓和外界冲击力、防护车身保护车身及乘员安全功能的安全装置。保险杠的外板和缓冲材料用塑料制成，横梁用厚度为1.5毫米左右的冷轧薄板冲压而成U形槽；外板和缓冲材料附着在横梁上，横梁与车架纵梁螺丝连接，可以随时拆卸下来。这种塑料保险杠使用的塑料，大体上使用聚酯系和聚丙烯系两种材料。
保险杠具有安全保护、装饰车辆以及改善车辆的空气动力学特性等作用。从安全上看，汽车发生低速碰撞事故时能起到缓冲作用，保护前后车体；在与行人发生事故时可以起到一定的保护行人的作用。从外观上看，具有装饰性，成为装饰轿车外型的重要部件；同时，汽车保险杠还有一定的空气动力学作用。
现有的汽车保险杠用材料中，塑料部分通常采用现有的PP与POE、滑石粉等组合而成，但目前常用的材料具有易老化、不耐冲击、拉伸强度低、断裂伸长率低等问题。
发明内容
本发明的目的在于为了克服以上现有技术的不足而提供一种汽车保险杠用复合材料及其制备方法，通过组分的特定配合改性提高材料的机械性能。
本发明的技术方案如下：
一种汽车保险杠用复合材料，包括以重量份计的如下组分：聚碳酸酯20-30份，聚丙烯5-10份，2-丙烯酰胺-2-甲基丙磺酸0.2-0.5份，二氨基二苯甲烷2-4份，硬脂酸镁1-3份，聚乙烯醇2-4份，二甲基二烯丙基氯化铵1-2份，1,3-丙基磺酸内酯0.5-1份，抗氧剂0.5-0.8份，增塑剂2-4份。
进一步地，所述的汽车保险杠用复合材料，抗氧剂为2,6-二叔丁基对甲基苯酚。
进一步地，所述的汽车保险杠用复合材料，增塑剂为邻苯二甲酸二异壬酯。
所述的汽车保险杠用复合材料的制备方法，包括以下步骤：
步骤1，按照重量份称取各组分；
步骤2，将聚碳酸酯，聚丙烯，硬脂酸镁，聚乙烯醇和二甲基二烯丙基氯化铵加入到反应釜中，搅拌混合，然后在氮气保护条件下升温至70-90℃，保持20-30分钟，得到反应混合物一；
步骤3，将2-丙烯酰胺-2-甲基丙磺酸和二氨基二苯甲烷加入到反应混合物一中，在氮气保护条件下加热至40-50℃，保持60-90分钟，然后加入1,3-丙基磺酸内酯，抗氧剂和增塑剂，搅拌混合后通过双螺杆挤出机挤出，得到汽车保险杠用复合材料。
进一步地，所述的汽车保险杠用复合材料的制备方法，步骤2中搅拌混合的搅拌速度为180-200转/分钟，搅拌时间10-15分钟。
进一步地，所述的汽车保险杠用复合材料的制备方法，步骤3中挤出温度为180-230℃。
本发明提供的汽车保险杠用复合材料通过以聚碳酸酯和聚丙烯为基料，在其中加入了改性剂进行改性反应，最终得到了性能良好的复合材料，其具有良好的机械性能，其中拉伸强度达到了47MPa以上，弯曲强度达到了56MPa以上，断裂伸长率达到了460％以上，缺口冲击强度达到了72KJ/m2以上，悬臂梁冲击强度达到了756J/M以上，能够很好地运用于汽车保险杠体系中。
具体实施方式：
实施例1
一种汽车保险杠用复合材料，包括以重量份计的如下组分：聚碳酸酯20份，聚丙烯5份，2-丙烯酰胺-2-甲基丙磺酸0.2份，二氨基二苯甲烷2份，硬脂酸镁1份，聚乙烯醇2份，二甲基二烯丙基氯化铵1份，1,3-丙基磺酸内酯0.5份，抗氧剂2,6-二叔丁基对甲基苯酚0.5份，增塑剂邻苯二甲酸二异壬酯2份。
以上所述的汽车保险杠用复合材料的制备方法，包括以下步骤：
步骤1，按照重量份称取各组分；
步骤2，将聚碳酸酯，聚丙烯，硬脂酸镁，聚乙烯醇和二甲基二烯丙基氯化铵加入到反应釜中，搅拌混合，搅拌速度为180转/分钟，搅拌时间10分钟，然后在氮气保护条件下升温至70℃，保持20分钟，得到反应混合物一；
步骤3，将2-丙烯酰胺-2-甲基丙磺酸和二氨基二苯甲烷加入到反应混合物一中，在氮气保护条件下加热至40℃，保持60分钟，然后加入1,3-丙基磺酸内酯，抗氧剂和增塑剂，搅拌混合后通过双螺杆挤出机挤出，挤出温度为180-230℃，得到汽车保险杠用复合材料。
实施例2
一种汽车保险杠用复合材料，包括以重量份计的如下组分：聚碳酸酯25份，聚丙烯6份，2-丙烯酰胺-2-甲基丙磺酸0.3份，二氨基二苯甲烷2份，硬脂酸镁2份，聚乙烯醇3份，二甲基二烯丙基氯化铵1份，1,3-丙基磺酸内酯0.7份，抗氧剂2,6-二叔丁基对甲基苯酚0.6份，增塑剂邻苯二甲酸二异壬酯3份。
以上所述的汽车保险杠用复合材料的制备方法，包括以下步骤：
步骤1，按照重量份称取各组分；
步骤2，将聚碳酸酯，聚丙烯，硬脂酸镁，聚乙烯醇和二甲基二烯丙基氯化铵加入到反应釜中，搅拌混合，搅拌速度为190转/分钟，搅拌时间12分钟，然后在氮气保护条件下升温至75℃，保持26分钟，得到反应混合物一；
步骤3，将2-丙烯酰胺-2-甲基丙磺酸和二氨基二苯甲烷加入到反应混合物一中，在氮气保护条件下加热至43℃，保持7分钟，然后加入1,3-丙基磺酸内酯，抗氧剂和增塑剂，搅拌混合后通过双螺杆挤出机挤出，挤出温度为180-230℃，得到汽车保险杠用复合材料。
实施例3
一种汽车保险杠用复合材料，包括以重量份计的如下组分：聚碳酸酯27份，聚丙烯8份，2-丙烯酰胺-2-甲基丙磺酸0.4份，二氨基二苯甲烷4份，硬脂酸镁3份，聚乙烯醇3份，二甲基二烯丙基氯化铵2份，1,3-丙基磺酸内酯0.9份，抗氧剂2,6-二叔丁基对甲基苯酚0.7份，增塑剂邻苯二甲酸二异壬酯3份。
以上所述的汽车保险杠用复合材料的制备方法，包括以下步骤：
步骤1，按照重量份称取各组分；
步骤2，将聚碳酸酯，聚丙烯，硬脂酸镁，聚乙烯醇和二甲基二烯丙基氯化铵加入到反应釜中，搅拌混合，搅拌速度为195转/分钟，搅拌时间13分钟，然后在氮气保护条件下升温至80℃，保持26分钟，得到反应混合物一；
步骤3，将2-丙烯酰胺-2-甲基丙磺酸和二氨基二苯甲烷加入到反应混合物一中，在氮气保护条件下加热至48℃，保持85分钟，然后加入1,3-丙基磺酸内酯，抗氧剂和增塑剂，搅拌混合后通过双螺杆挤出机挤出，挤出温度为180-230℃，得到汽车保险杠用复合材料。
实施例4
一种汽车保险杠用复合材料，包括以重量份计的如下组分：聚碳酸酯30份，聚丙烯10份，2-丙烯酰胺-2-甲基丙磺酸0.5份，二氨基二苯甲烷4份，硬脂酸镁3份，聚乙烯醇4份，二甲基二烯丙基氯化铵2份，1,3-丙基磺酸内酯1份，抗氧剂2,6-二叔丁基对甲基苯酚0.8份，增塑剂邻苯二甲酸二异壬酯4份。
以上所述的汽车保险杠用复合材料的制备方法，包括以下步骤：
步骤1，按照重量份称取各组分；
步骤2，将聚碳酸酯，聚丙烯，硬脂酸镁，聚乙烯醇和二甲基二烯丙基氯化铵加入到反应釜中，搅拌混合，搅拌速度为200转/分钟，搅拌时间15分钟，然后在氮气保护条件下升温至 90℃，保持30分钟，得到反应混合物一；
步骤3，将2-丙烯酰胺-2-甲基丙磺酸和二氨基二苯甲烷加入到反应混合物一中，在氮气保护条件下加热至50℃，保持90分钟，然后加入1,3-丙基磺酸内酯，抗氧剂和增塑剂，搅拌混合后通过双螺杆挤出机挤出，挤出温度为180-230℃，得到汽车保险杠用复合材料。
对以上实施例制备得到的汽车保险杠用复合材料进行性能测试，结果如下：
Figure PCTCN2017115069-appb-000001
从以上结果可以看出，本发明提供的汽车保险杠用复合材料具有良好的机械性能，其中拉伸强度达到了47MPa以上，弯曲强度达到了56MPa以上，断裂伸长率达到了460％以上，缺口冲击强度达到了72KJ/m2以上，悬臂梁冲击强度达到了756J/M以上，能够很好地运用于汽车保险杠体系中。

Claims (6)

  1. 一种汽车保险杠用复合材料，其特征在于，包括以重量份计的如下组分：聚碳酸酯20-30份，聚丙烯5-10份，2-丙烯酰胺-2-甲基丙磺酸0.2-0.5份，二氨基二苯甲烷2-4份，硬脂酸镁1-3份，聚乙烯醇2-4份，二甲基二烯丙基氯化铵1-2份，1,3-丙基磺酸内酯0.5-1份，抗氧剂0.5-0.8份，增塑剂2-4份。
  2. 根据权利要求1所述的汽车保险杠用复合材料，其特征在于，抗氧剂为2,6-二叔丁基对甲基苯酚。
  3. 根据权利要求1所述的汽车保险杠用复合材料，其特征在于，增塑剂为邻苯二甲酸二异壬酯。
  4. 权利要求1所述的汽车保险杠用复合材料的制备方法，其特征在于，包括以下步骤：
    步骤1，按照重量份称取各组分；
    步骤2，将聚碳酸酯，聚丙烯，硬脂酸镁，聚乙烯醇和二甲基二烯丙基氯化铵加入到反应釜中，搅拌混合，然后在氮气保护条件下升温至70-90℃，保持20-30分钟，得到反应混合物一；
    步骤3，将2-丙烯酰胺-2-甲基丙磺酸和二氨基二苯甲烷加入到反应混合物一中，在氮气保护条件下加热至40-50℃，保持60-90分钟，然后加入1,3-丙基磺酸内酯，抗氧剂和增塑剂，搅拌混合后通过双螺杆挤出机挤出，得到汽车保险杠用复合材料。
  5. 根据权利要求4所述的汽车保险杠用复合材料的制备方法，其特征在于，步骤2中搅拌混合的搅拌速度为180-200转/分钟，搅拌时间10-15分钟。
  6. 根据权利要求4所述的汽车保险杠用复合材料的制备方法，其特征在于，步骤3中挤出温度为180-230℃。
PCT/CN2017/115069 2017-09-06 2017-12-07 一种汽车保险杠用复合材料及其制备方法 WO2019047405A1 (zh)

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