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Polyolefin resin molded product, method for preparing the same, and air duct using the same

A technology of polyolefin resin and polypropylene resin, which is applied in the field of polyolefin resin molding products and air ducts for preparing and using the products, can solve the problems of inflatable foam air ducts having no hardness and difficulty in manufacturing air ducts, etc.

Active Publication Date: 2016-02-10
HYUNDAI MOTOR CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, expandable foam air ducts do not have the required stiffness due to limitations of the resins that make up the foam, making it difficult to manufacture air ducts with satisfactory mechanical properties and surface quality

Method used

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  • Polyolefin resin molded product, method for preparing the same, and air duct using the same
  • Polyolefin resin molded product, method for preparing the same, and air duct using the same
  • Polyolefin resin molded product, method for preparing the same, and air duct using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 5

[0122]

[0123] (1) Preparation of polyolefin resin base material

[0124] The reactants were mixed as shown in Table 1 below, and the mixture was introduced into a twin-screw extruder having an L / D (ratio of length to diameter of the screw) of 40 and a screw diameter of 30 mm, and when melted at a temperature of 180° C. The screw was blended at 400 rpm for 35 seconds, and then discharged through a die to prepare a polyolefin resin base.

[0125] (2) Preparation of polyolefin resin molded products

[0126] The polyolefin resin base material is introduced into a blow molding machine together with 3 phr of chemical foaming agent and blow-molded to prepare a polyolefin resin molded product.

[0127] (3) Preparation of air ducts

[0128] Air ducts are manufactured using polyolefin resin molded products.

experiment example

[0131]

[0132] The physical properties of the polyolefin resin molded products obtained in Examples and Comparative Examples were measured by the following methods, and the results are shown in Table 1 and Table 2 below, respectively.

[0133] 1. Mechanical properties

[0134] 1-1. Tensile strength (kg / cm 2 )

[0135] Samples having a thickness of 1 / 8 inch manufactured using the polyolefin resin molded products obtained in Examples and Comparative Examples were used to measure tensile strength according to the ATSMD638 standard.

[0136] 1-2. Flexural modulus (kg / cm 2 )

[0137] Samples having a thickness of 1 / 8 inch manufactured using the polyolefin resin molded products obtained in Examples and Comparative Examples were used to measure flexural modulus according to ATSMD790.

[0138] 1-3. IZOD impact strength (kg cm)

[0139] Samples having a thickness of 1 / 8 inch manufactured using the polyolefin resin molded products obtained in Examples and Comparative Examples we...

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Abstract

A polyolefin resin molded product includes a base which comprises at least one kind of polypropylene resin having a crystallization temperature of 112 DEG C. to 150 DEG C.; low density polyethylene; an inorganic filler; and an olefin polymer comprising 2 wt % to 10 wt % of a reactive functional group bonded to a main chain or an end thereof and having a diameter of 0.5 [mu]m to 200 [mu]m. The base has foam cells having an average diameter of 20 [mu]m to 50 [mu]m are distributed on thereon.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority from Korean Patent Application No. 10-2014-0072422 filed with the Korean Intellectual Property Office on Jun. 13, 2014, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to a polyolefin resin molded product, a method for producing the product, and an air duct using the product. More specifically, the present disclosure relates to a polyolefin resin molded product for improving interfacial adhesion and dispersibility, a method for producing the product, and an air duct using the product. Background technique [0004] A vehicle's air conditioning system typically includes cooling equipment. During the cooling process, the refrigerant is compressed by the compressor driven by the engine power and flows in the condenser. The refrigerant then undergoes heat exchange through the blowing air from the coo...

Claims

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Application Information

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IPC IPC(8): C08L23/10C08L53/00C08L23/06C08L23/26C08J9/04F16L47/32B60H1/00F24F13/02
CPCB60H1/242C08J9/0061C08J9/0066C08J9/06B60H1/00564C08J2323/12C08J2423/12C08J2423/06C08J2201/03C08L2205/035C08L23/10C08L23/04C08L51/06C08K3/34C08J9/00C08K3/00C08L23/06C08L101/02
Inventor 金鹤洙金大植郑基然刘荣奎南炳国曹成旼
Owner HYUNDAI MOTOR CO LTD
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