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Composition for automobile interior skin and manufacturing method thereof

A technology for automotive interiors and compositions, applied in vehicle components, chemical instruments and methods, vehicle safety arrangements, etc., to achieve the effects of excellent powder fluidity, excellent sensitivity characteristics, excellent light weight and mechanical properties

Inactive Publication Date: 2020-07-17
HYUNDAI MOBIS CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no technology exists for removing skin scoring from a crash pad consisting of a skin, foam and plastic core

Method used

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  • Composition for automobile interior skin and manufacturing method thereof
  • Composition for automobile interior skin and manufacturing method thereof
  • Composition for automobile interior skin and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0109] Preparation Example: Production of Ether-Containing Polyester Polyol

[0110] A first mixture comprising 44 parts by weight of adipic acid, 20 parts by weight of 1,4-butanediol and 36 parts by weight of polytetramethylene ether diol having a hydroxyl value of 448.8 mgKOH / g was prepared. alcohol. The first mixture was heated from room temperature to a first heating temperature of 150° C., and then maintained at the first heating temperature for 60 minutes. Next, the first mixture was heated from the first heating temperature to a second heating temperature of 230° C., and kept at the second heating temperature for 30 minutes. Thereafter, while maintaining the second heating temperature, a vacuum degree of 720 mmHg was applied to the first mixture, and then the first mixture was reacted until the acid value of the first mixture reached 0.3 mgKOH / g or lower, thereby producing a product having 12.3 % condensed water content and 74.8 mgKOH / g hydroxyl value of ether-contain...

example 1 and example 2 and comparative example 1 to comparative example 6

[0120] These components were introduced into an extruder according to the components and contents shown in Table 1 below, and then melted and kneaded. The kneaded material is water-cooled and cut to produce an intermediate shaped body in the form of pellets. Thereafter, the intermediate shaped body was dried and pulverized at -100°C, whereby a pulverized material was obtained. Next, the pulverized material is introduced into the thermal mixer, and the first stirring is performed at a blade rotation speed of 500 rpm to 1500 rpm and at a temperature of 80°C to 110°C. The stirred pulverized material is introduced into the cooling mixer, and second stirring is performed at a blade rotation speed of 200 rpm to 1000 rpm for 30 seconds to 300 seconds, thereby manufacturing a composition for an automobile interior skin in a powder form.

example 1 and example 2 and comparative example 1 to comparative example 7

[0134] Prepare a 3mm to 4mm thick core layer comprising a matrix resin comprising a polypropylene-based resin, a styrene-diene based polymer and an inorganic filler, and form a 3mm to 5mm thick layer containing Foam layer of polyurethane foam. Then, the compositions for automotive interior skins produced in each of Examples 1 and 2 and Comparative Examples 1-7 were subjected to slip molding to form a 0.8 mm thick skin layer on the surface of the foam layer. At this time, the core layer and the skin layer are formed without undergoing the skin scoring process.

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Abstract

A composition for an automotive interior skin and a method for manufacturing the same are provided. In one embodiment, the composition for the automotive interior skin includes 30 wt% to 70 wt% of a polyol compound; from 5 wt% to 40 wt% of a dicyclohexylmethane-4, 4 '-diisocyanate; and 5 wt% to 30 wt% of a chain extender based on an aromatic diol.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2019-0002210 filed with the Korean Intellectual Property Office on January 8, 2019, the entire disclosure of which is incorporated herein by reference. technical field [0003] The present disclosure relates to a composition for an automotive interior, a method for manufacturing the composition, and an automotive interior manufactured using the composition. Background technique [0004] A crash pad, also known as a dashboard, is an automotive interior component and is attached to the lower end of the front glass of the driver's seat. The airbags are installed in the crash pads. The role of the airbag is to protect the lives of occupants from external impact by deploying to the outside through the seam line of the crash pad when a collision occurs. Therefore, the airbag is very important in terms of design, convenience and stability. [0005] fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/66C08G18/42C08G18/32B60R21/205
CPCC08G18/758C08G18/6607C08G18/4252C08G18/3215B60R21/205C08G18/0895C08G18/44C08K5/3435C08L75/04C08G18/75C08G18/42C08G18/48C08G18/4018B29B7/007B32B15/18B32B27/40B32B27/065B29L2031/3005B32B2605/08B32B2605/003C08K5/005B29L2031/3026B29C41/22B29C41/34B29K2075/00B29L2031/3014B29C41/18
Inventor 孙昌完权带宁李在璨金勋政李圭敏
Owner HYUNDAI MOBIS CO LTD
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