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Composite resin composition for automotive interior material and automotive interior material using same
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A composite resin, automotive interior technology, applied in the field of composite resin composition, automotive interior materials, can solve the problems of low resistance, deterioration of appearance quality, low formability and the like
Pending Publication Date: 2022-05-27
HYUNDAI MOTOR CO LTD +2
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[0003] However, the material exhibits low formability, whereby the appearance quality deteriorates
Furthermore, the material exhibits low resistance to chemicals such as fragrances, and its unit cost is somewhat high
Method used
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Embodiment 1 and 2 and comparative example 1 to 8
[0058] Examples 1 and 2 and Comparative Examples 1 to 8: Production of Composite Resin Compositions for Automotive Interior Materials
[0059] The raw materials of the composite resin composition shown in Table 1 below were mixed and extruded to produce pellets having a uniform degree of dispersion. Subsequently, the pellets are heated, injected into a mold, and cooled by an injection process to produce parts for making samples of automotive interior materials.
[0060] Table 1
[0061]
[0062] *Polyester based resin: PBT
[0063] *Vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound copolymer: ABS comprising 50wt% to 70wt% butadiene, 20wt% to 35wt% styrene and 1wt% to 15wt% acrylonitrile (LGChem)
[0064] *Aromatic vinyl compound-vinyl cyanide copolymer: SAN comprising 65wt% to 75wt% styrene and 25wt% to 35wt% acrylonitrile (LG Chemical)
experiment example
[0065] Experimental Example: Evaluation of Physical Properties of Automotive Interior Material Samples
[0066] The physical properties of the automotive interior material samples manufactured according to Examples 1 and 2 and Comparative Examples 1 to 8 were evaluated. The evaluation criteria are as follows.
[0067] - Melt flow rate: performed based on ISO 1133 (230°C, 10kg)
[0068] -Impact strength: performed based on ISO 180 / 1A (notched, 23°C)
[0069] - Tensile Strength: Executed based on ISO 527 (50mm / min)
[0070] - Flexural strength and flexural modulus: performed based on ISO 178 (1 / 8 inch, span 64, speed 2mm / min, 4×10 input)
[0071] - Heat deflection temperature: performed based on ISO 75 (0.45MPa)
[0072]- Chemical resistance test: Environmental stress cracking (ESC) test, performed based on ISO 4599
[0073] - Noise resistance test: performed based on Ziegler SSP-04
[0074] - Light fastness test: The measurement results based on the above evaluation cri...
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Abstract
The present disclosure relates to a composite resin composition for an automotive interior material and an automotive interior material using the same. The composite resin composition includes a polyester-based resin satisfying a specific intrinsic viscosity range, and a vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound copolymer and an aromatic vinyl compound-vinyl cyanide compound copolymer satisfying a specific melt index range. The automotive interior material manufactured using the composite resin composition has the advantage that the automotive interior material is used as an unpainted product while reducing costs due to the improvement of the material, thereby enabling high economic efficiency. Furthermore, the automotive interior material satisfies the desired physical properties, such as chemical resistance and mechanical strength, and simultaneously exhibits high formability and noise resistance, thereby improving appearance quality and emotional quality.
Description
technical field [0001] The present disclosure relates to a composite resin composition for an automobile interior material and an automobile interior material using the same. Background technique [0002] Materials for conventional automotive interior materials (acrylonitrile-butadiene-styrene (ABS), composite resins composed of polycarbonate (PC) and acrylonitrile-butadiene-styrene (ABS), or Composite resins composed of polycarbonate (PC) and acrylate-styrene-acrylonitrile (ASA) exhibit excellent physical properties and paintability, and are thus used in various parts of automotive interior materials. [0003] However, the material exhibits low formability, whereby the appearance quality is deteriorated. Furthermore, the material exhibits low resistance to chemicals such as fragrances, and its unit cost is somewhat high. [0004] In particular, for automobiles to be developed later, most automobile interior materials will be changed from covered type to open type, and thu...
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