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Composition of polypropylene having high impact strength and high adhesion

一种复合树脂、组合物的技术，应用在胶粘剂等方向，能够解决聚丙烯复合树脂表面摩擦系数低、车辆有害物质增加、原材料成本增加等问题，达到优秀机械性质、成本减少、优秀质量的效果

Active Publication Date: 2017-12-05
HYUNDAI MOTOR CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, polypropylene composite resins have a low surface coefficient of friction, making it difficult to bond to foam / skin and other cover materials
Over time, many quality defects due to loss of adhesion and wrinkling of polypropylene composite resin and cover material due to poor adhesion
[0005] In order to overcome these problems, an additional bonding process is required, but there are problems of an increase in the cost of raw materials due to a separate additional process and an increase in harmful substances in vehicles

Method used

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  • Composition of polypropylene having high impact strength and high adhesion
  • Composition of polypropylene having high impact strength and high adhesion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0042] According to an exemplary embodiment of the present invention, the highly crystalline ethylene-propylene copolymer (a-2) has a high crystallinity of more than about 45% by weight, thereby having an effect of increasing rigidity of molded articles. In this case, when the degree of crystallinity is less than about 45% by weight, rigidity decreases. Preferably, the degree of crystallinity is from about 55 to 100 wt. 87, 89, 90, 91, 93, 95, 97, 99 or 100% by weight).

[0043] Exemplary highly crystalline ethylene-propylene copolymers (a-2) have a melt index of about 10 to about 30 g / 10 min (2.16 kg at 230°C). In this case, when the melt index is less than about 10g / 10min (at 230°C, 2.16kg), the moldability is reduced due to the decrease in fluidity, and when the melt index is greater than about 30g / 10min (at 230°C, , 2.16kg), Izod and surface impact strength decrease. The melt index is preferably about 10 to about 20 g / 10min (at 230°C, 2.16kg), more preferably about 8 to...

Embodiment 1

[0079] A polypropylene polymer was prepared consisting of a mixture of 15% by weight of an ethylene-propylene copolymer having an ethylene content of 50% by weight and 85% by weight of a highly crystalline ethylene-propylene copolymer, the high The crystalline ethylene-propylene copolymer has a crystallinity of 55% by weight.

[0080] Next, a polyethylene resin composition composed of a mixture of 70% by weight of a low specific gravity polyethylene polymer having a specific gravity of 0.91 and 30% by weight of an ethylene vinyl acetate copolymer in which each Long chain branches of 1000 carbons are 5% by weight, and the ethylene vinyl acetate copolymer has 30% by weight of vinyl acetate.

[0081] Then, 48% by weight of polypropylene polymer, 9% by weight of polyethylene resin composition, 20% by weight of thermoplastic elastomer polymerized into block copolymer, 3% by weight of Silane-based silane-grafted silyl-propylene polymer, 20% by weight of talc with a lamellarity inde...

Embodiment 2

[0083] With the same content used in Example 1 to prepare the composition of polypropylene composite resin, the polyethylene resin composition of the mixture of 70% by weight of low specific gravity polyethylene polymer and 30% by weight of ethylene vinyl acetate copolymer will be used Processed in the form of pellets, the low specific gravity polyethylene polymer has a specific gravity of 0.906 and has 7% by weight of long chain branches per 1000 carbons, the ethylene vinyl acetate copolymer has 40% by weight of vinyl acetate ester. The pellets were injected under injection conditions of 220±30°C to prepare test specimens for evaluation of thermal / mechanical properties.

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Abstract

A composition of polypropylene composite resin having high impact strength and high adhesion is provided. The composition of polypropylene composite resin having high impact strength and high adhesion can largely enhance base adhesion and impact resistance due to a high friction coefficient while providing a similar mechanical property to the related art. The compositions provided herein include mixing a polypropylene polymer, a polyethylene resin composition, and a thermoplastic elastomer, a silane-based propylene polymer, and an inorganic filler as main components at a specific content ratio. The compositions have advantages including process simplification, cost reduction, and eco-friendly without a separate adhering process. Such compositions can be used for interior components such as sun visors, door trims, pillar trims of vehicles and various other industrial components and materials.

Description

technical field [0001] The present invention relates to a polypropylene composite resin composition having high impact strength and high adhesion. More specifically, the present invention relates to a polypropylene composite resin composition having high impact strength and high adhesive force by mixing a polypropylene polymer, a polyethylene resin composition, a polyethylene resin composition, Thermoplastic elastomers, silane-based propylene polymers, and inorganic fillers can substantially enhance base material adhesion and impact resistance (due to high coefficient of friction) while having similar mechanical properties to related art, which has the advantages of process simplification, cost reduction, The advantage of being eco-friendly without a separate bonding process, which can be used for interior components of vehicles such as sun visors, door trims, pillar trims, and various industrial components and materials by using compositions of polypropylene composite resins ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/06C08L23/08C08L51/06C08K3/34
CPCC08L23/0815C08L2205/025C08L2205/035C08L2207/04C08L23/06C08L23/0853C08L51/06C08K3/34C08L23/142C08L23/04C08L23/14C08L53/00C08L23/10C08L53/02C08L23/12C08L23/16C08K7/00C08L2207/066C09J123/16
Inventor 李汉琪姜秉旭李昇俊夫雄载
Owner HYUNDAI MOTOR CO LTD