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Polypropylene complex resin composition for low-temperature injection molding

A polypropylene resin, composite resin technology, used in synthetic resin layered products, applications, household components, etc., can solve the problems of pre-formed fabrics that cannot be preheated, air bubbles, and poor quality, and achieve excellent moldability, The effect of process simplification and cost reduction

Inactive Publication Date: 2018-11-23
HYUNDAI MOTOR CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preformed IMG method is disadvantageous in testing VOC because the adhesive is applied on the substrate, and has the following problems: the preformed fabric cannot be preheated, so the quality deteriorates, such as in the flange part during compression Compression defects on the fabric or bubbles on the faux leather fabric
However, the polypropylene composite resin used as the base has a high injection temperature of 215°C to 235°C based on the nozzle, so there is a problem that soft Deterioration of the imitation leather fabric, thereby reducing the surface quality of internal parts

Method used

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  • Polypropylene complex resin composition for low-temperature injection molding
  • Polypropylene complex resin composition for low-temperature injection molding
  • Polypropylene complex resin composition for low-temperature injection molding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0049] The following examples illustrate the invention but are not intended to limit it.

[0050] A polypropylene composite resin composition was prepared by blending the composition components at the content ratios shown in Tables 1 and 2 below.

[0051] At this time, the components of the composition used were as follows. In addition, samples were prepared from the prepared polypropylene composite resin composition, and physical properties were measured by the following methods for measuring physical properties.

[0052] composition components

[0053] polypropylene resin

[0054] (A-1) Highly crystalline ethylene-propylene copolymer (an isotactic index of 98% to 100%; 2.16 kg at 230° C., an MI value of 30 g / 10 min; an ethylene content of 3 to 7% by weight)

[0055] (A-2) Ultra-high fluidity homopolypropylene (2.16kg, at 230°C, MI value is 1200g / 10min; PDI value is 2 to 4)

[0056](A-3) Ethylene-propylene copolymer (isotactic index is 94% to 97%; 2.16kg, at 230°C, MI val...

Embodiment 3 to 7

[0087] These examples are provided in order to demonstrate that obtained by selectively adding (B) an olefin-based elastomer and (C) an inorganic reinforcing agent to (A) a polypropylene hybrid resin as components contained in a polypropylene composite resin composition Effect.

[0088] [Table 2]

[0089]

[0090]

[0091] From the results in Table 2, it can be confirmed that, in the case of the polypropylene composite resin compositions containing the smaller layered talc having a particle diameter of 3 to 6 μm as the (C) inorganic reinforcing agent of Examples 3 to 5, compared to With the composite resin composition of Example 2, the effect of improving physical properties such as tensile strength and impact resistance was obtained.

[0092] It can also be determined that in Examples 6 and 7 selectively use 1+4 In the case of ethylene-octene rubber (EOR) with a low Mooney viscosity (ASTMD1646) as the polypropylene composite resin composition of (B) olefin-based elast...

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Abstract

A polypropylene complex resin composition for low-temperature injection molding, may include (A) a polypropylene resin; (B) an olefin-based elastomer; (C) an inorganic reinforcing agent; and (D) an additive, wherein (A) the polypropylene resin is a polypropylene mixed resin including: about 100 parts by weight of (A-1) a high-crystalline ethylene-propylene copolymer having an isotactic index of about 98 to 100% and a melt flow index value of about 20 to 50 g / 10 min (2.16 kg, 230 DEG C.); and about 5 to 20 parts by weight of (A-2) an ultrahigh fluidity homopolypropylene having a melt flow indexvalue of about 1,000 to 1,800 g / 10 min (2.16 kg, 230 DEG C.). According to the invention, even if under the low-temperature injection condition, excellent moldability can be achieved and excellent appearance quality of molded products is provided.

Description

technical field [0001] The present invention relates to a polypropylene composite resin composition for low temperature injection molding, said composition having a melt flow index (MI) value of about 20 to 30 g / 10 min measured at 200° C. and a load of 2.16 kg, and Spiral flow values ​​of about 500 to 800 mm according to the 200°C injection standard. Background technique [0002] Common interior components for vehicles include door trims, fillers, trunk mats, bag trim, roof liners, and more. With the trend of quality desired by car users, leather-like fabrics are applied to the surfaces of interior parts for the purpose of imparting a soft texture while providing a luxurious image. As the leather-like fabric, a nonwoven fabric, a woven fabric, or a fabric formed of a thermoplastic resin material has been used. [0003] Examples of methods of applying leather-like fabrics to interior parts include material encapsulation, vacuum molding, powder slush molding (PSM) methods, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/12C08K13/04C08K7/00C08K3/34
CPCC08L23/0815C08K2201/003C08L2205/025C08L2205/03C08L23/12C08K13/04C08K7/00C08K3/34C08L23/142C08L2205/02C08L2205/24C08L2201/08C08K3/013C08L23/16C08F110/06C08F210/06C08L23/22C08L23/24B29C45/561C08F2500/15C08F2500/17C08F2500/12B29K2995/0089B32B27/12B32B27/08B32B27/32B32B2605/003B32B2307/54B32B2307/546B32B2307/718B32B2307/558B29C45/14786B29K2023/12B29L2031/3005B29K2995/0077B29K2995/0082B32B5/02
Inventor 金鹤洙李汉琪金容頀金大植朴文圭朴周成金钒昊李赫崔会镇
Owner HYUNDAI MOTOR CO LTD
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