KR20160082803A - Olefin block copolymer composition, foam and console for automotive interior material and preparation thereof - Google Patents
Olefin block copolymer composition, foam and console for automotive interior material and preparation thereof Download PDFInfo
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- KR20160082803A KR20160082803A KR1020140192205A KR20140192205A KR20160082803A KR 20160082803 A KR20160082803 A KR 20160082803A KR 1020140192205 A KR1020140192205 A KR 1020140192205A KR 20140192205 A KR20140192205 A KR 20140192205A KR 20160082803 A KR20160082803 A KR 20160082803A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2205/00—Foams characterised by their properties
- C08J2205/06—Flexible foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Engineering & Computer Science (AREA)
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Abstract
The present invention relates to a resin composition for automobile interior materials, which comprises, by weight, 10 to 45% of an olefin block copolymer, 10 to 40% of an ethylene vinyl acetate copolymer, 5 to 25% of a polyethylene, 25% of other polymer, 1 to 5% of other polymer, and 1 to 5% of EPDM as a rubber product.
Description
TECHNICAL FIELD The present invention relates to a resin composition for a highly sensitive and low specific gravity olefin block copolymer for automobiles, a method for producing the same, and a foam using the composition. More particularly, the present invention relates to a PU foam CONSOLE for vehicles or a PU foam molded by conventional low- Such as ARMREST, as an interior material formed of a high specific gravity olefin block copolymer foam.
The conventional PU foam CONSOLE according to the prior art shows a variety of shapes depending on the type of vehicle, and each molding is completed by inserting the polyurethane into the interior material of the PU foam CONSOLE vehicle when the PU foam is formed, Type, and it is used as an automobile interior material due to excellent cushioning, light weight, mass production, economy and the like. Because it is not compatible with eco-friendly materials, various tests are currently underway to examine the application of new materials. EVA resin with all the above characteristics and conditions is eco-friendly material. It is light weight, flexible, shock absorbing, soundproof and high sensitivity. Olefin block copolymer (OBCs) inherent properties are flexibility, heat resistance, Olefin block copolymers (OBCs) have elastic recovery, improved abrasion resistance and low permanent compression strain. Compared to existing single EVA compounds, they are lightweight and highly functional with high sensitivity, flexibility, soundproofness, rebound resilience, heat resistance and abrasion resistance. Olefin block Copolymer (OBCs) Suitable as FOAM CONSOLE, ARMREST material.
CONSOLE and ARMREST, which are the most used automotive interior materials currently used, are supplied to automobile interior parts manufacturer after being manufactured as interior parts such as PU FOAM CONSOLE and PU FOAM ARMREST through polyurethane foaming process and supplied to finished car manufacturers.
However, PU FOAM material, which is used as the main material of PU FOAM CONSOLE and FOAM ARMREST for automobiles, is not only insufficient in air permeability but also causes environmental pollutants such as HCN gas during combustion and can not be recycled and reused Have. In addition, it becomes yellow when used for a long time, and odor is generated, and it shows a limit to the health of the driver as well as the emotional quality of consumers who are emerging in recent years.
Attempts to replace such polyurethane materials have been attempted in various fields, and it is necessary to develop materials that are superior to the existing PU FOAM CONSOLE and PU ARMREST characteristics, and that are excellent in light weight, high elasticity, excellent and environmentally friendly.
Korean Patent Laid-Open Publication No. 10-2004-0017830 and the like have used materials such as polyester to replace such polyurethane foam, but they have not obtained sufficient physical properties.
Accordingly, the present invention has been made to overcome the above-mentioned problems, and it is an object of the present invention to provide a method of replacing the polyurethane (PU foam molding) foaming process for foam molding of existing vehicle PU foam CONSOLE, PU foam ARMREST, , High sensitivity, high elasticity, and new material olefin block copolymer (OBCs) composition, and to provide a new product by introducing a foaming process for manufacturing an interior material such as an improved olefin block copolymer foam CONSOLE, ARMREST.
It is an object of the present invention to provide an olefin block copolymer comprising 10 to 45% by weight of an olefin block copolymer, 10 to 40% of an ethylene vinyl acetate copolymer, 5 to 25% of a polyethylene, 1-25% of an alpha-olefin copolymer, To 5% by weight, and 1 to 5% by weight of EPDM as a rubber product.
The automobile interior material (CONSOLE, ARMREST, etc.) manufactured by the resin composition of the present invention has an expansion ratio of 7 to 18 and a specific gravity of 0.040 to 0.095 g / cc , The final foam thickness is 1 ~ 120 mm, the final foam is excellent in appearance without tearing or scratches, excellent adhesion with the adhesive surface, and the existing polyurethane applied. Higher sensitivity than PU foam CONSOLE Flexibility, Physical properties such as elasticity, endurance, shrinkage resistance and abrasion resistance are greatly improved.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a configuration of an automotive CONSOLE which is an example of the present invention. Fig.
2 is a process for producing the olefin block copolymer resin composition of the present invention.
Fig. 3 is a production process of the polyurethane foam CONSOLE by the conventional foaming process of the present invention. Fig.
4 is a process for producing an olefin block copolymer foam CONSOLE by the foam injection molding method of the present invention.
The present invention relates to an olefin block copolymer (OBCs) resin composition for automobile high specific gravity olefin block copolymer (OBCs), a process for preparing the same, and a process for producing an OBCs foam CONSOLE, OBCs foamed product ARMREST, which is improved in performance by introducing a new injection foaming process.
The olefin block copolymer (OBCs) copolymer resin composition of the present invention contains olefin block copolymer, polyethylene, ethylene vinyl acetate copolymer, alpha olefin copolymer, other polymer, EDPM, which is a rubber product, and crosslinking agent, foaming agent and other additives. OBCs resins are low specific gravity, flexible, shock absorbing, soundproofing, and high sensitivity. Olefin block copolymers have inherent properties such as flexibility and heat resistance, high crystallization temperature, good elastic recovery, improved abrasion resistance and low permanent compression strain When an olefin block copolymer is used, it is more suitable as a highly functional CONSOLE (see FIG. 1) material by improving the sensitivity, flexibility, shrinkage resistance, rebound resilience, abrasion resistance, and weight of the EVA resin.
Methods for preparing the composition of the present invention and manufacturing an automobile interior material are as follows.
2, olefin block copolymer, polyethylene, ethylene vinyl acetate copolymer, other polymer, rubber EDPM, crosslinking agent, foaming agent and additives were weighed into a balance, kneaded into a kneader, kneaded, After the addition of pigments and other additives into the car and secondary kneading, the kneaded composition is put in an extruder and extruded to prepare a bead-shaped composition using a pellet machine. Dried and packed to prepare a raw material composition for an automobile interior material.
As shown in FIG. 3, in the case of the conventional polyurethane foam, the product was cured by the low-temperature foaming process as it is in the foaming machine.
The method of manufacturing an interior material of the present invention is to manufacture an automobile interior material such as CONSOLE by injection foaming and curing the composition of the present invention. A detailed process drawing is shown in FIG. 4, where the expansion ratio after injection foaming is 18 times as high as the specific gravity is 0.045 to 0.095 g / cc.
(1) In the present invention, the proportions of the respective constituent resin components are 10 to 45% by weight of the olefin block copolymer, 10 to 40% by weight of the ethylene vinyl acetate copolymer, 5 to 25% by weight of the polyethylene, 25% of other polymers, 1 ~ 5% of other polymers, and 1 ~ 5% of EPDM rubber. A crosslinking agent, foaming agent and other additives were used for the resin mixture. The amount of such additives can be suitably added in an amount generally added to the vehicle interior material, which is a fact known to those skilled in the art.
(2) olefin block copolymers (OBCs), ethylene vinyl acetate copolymers, polyethylene (e.g., one or more linear polyethylenes), alpha-olefin copolymers (such as polyolefin butene copolymers), other polymers Polyolefin resin) and the like was 0.84 to 0.96 g / cc.
(3) The inorganic filler may be calcium carbonate (CaCO 3 ), TiO 2 , talc, stearic acid or the like which improves workability and physical properties and is used in an amount of 6 parts by weight or less per 100 parts by weight of the resin mixture. It is preferable that zinc oxide (ZnO) is added in a proportion of 0.1 to 8 parts by weight per 100 parts by weight of the resin composition for the purpose of promoting bridging.
(4) Others As the additive used in the present invention, 0.1 to 9 parts by weight of the blowing agent JTR, 0.1 to 3 parts by weight of the crosslinking agent DCP, and 0.1 to 5 parts by weight of the pigment may be added, and carbon nanomaterials such as Graphene And 0.1 to 3 parts by weight of CNT may be added to improve various functionalities.
(5) The peroxide type is most effective as a crosslinking agent for organic oxides after kneading the material at an appropriate temperature in the above process, and azodicarbonamide type is preferable as the foaming agent. The foaming agent is preferably used in an amount of 0.1 to 9 parts by weight, and in addition to azodicarbonamide,
(6) Carbon dioxide, nitrogen gas, air, helium and the like can be used as the inert gas which is a crosslinking agent or a crosslinking agent for the above-mentioned blend above the melting point of the base material, and carbon dioxide which is impregnated with the resin composition at a high speed can be added as a foaming agent. The pellet-shaped resin is injected into a foaming machine through an extruder, and the resin is injected into a mold through an injection machine screw. The blowing agent is injected into a mold through a screw, The temperature of the front side of the injection screw screw gate is set at 100 to 130 ° C, the temperature of the mold is controlled at 145 to 180 ° C, the appropriate pressure is applied, the processing time is 3 to 7 minutes The mold is opened instantaneously, and the foam is foamed at the same time as the mold release. After the foam is cured, the interior material is obtained in the form of the olefin block copolymer foam such as CONSOLE and ARMREST.
(7) The automotive olefin block copolymer foamed internal material (CONSOLE, ARMREST, etc.) produced by the method of the present invention has an expansion ratio of 7 to 18 and a maximum specific gravity of 0.180 to 0.040 g / cc, preferably a specific gravity of 0.040 to 0.095 g / cc, and the final foam thickness is 1 ~ 120 mm. The final foam is excellent in appearance without tearing or scratches, excellent in adhesion with the adhesive surface, and superior to conventional PU foam CONSOLE Physical properties such as flexibility, rebound resilience, endurance, shrinkage resistance and abrasion resistance are greatly improved.
Hereinafter, the present invention will be described in more detail with reference to Examples.
1. Manufacture of CONSOLE pad for automobile
Example 1)
A resin mixture was made by using 45% of olefin block copolymer, 20% of ethylene vinyl acetate copolymer, 20% of polyethylene, alpha-olefin copolymer, other polymer and 15% of EPDM as a rubber product in a weight ratio of 100 parts by weight , 0.8 parts by weight of a crosslinking agent, 7.0 parts by weight of a foaming agent, 0.2 parts by weight of stearic acid and 10.5 parts by weight of zinc oxide and other additives were weighed into a balance and kneaded in a kneader. The kneaded composition was put in an extruder and extruded A bead type composition was prepared using a pellet machine, and injection foam was applied to produce a CONSOLE pad.
Example 2)
A resin mixture was prepared by using 30% of an olefin block copolymer, 25% of an ethylene vinyl acetate copolymer, 20% of an ethylene, 20% of an alpha-olefin copolymer, other polymer, and EPDM as a rubber product, and 100 parts by weight , 0.8 parts by weight of a crosslinking agent, 6.0 parts by weight of a foaming agent, 0.2 parts by weight of stearic acid, and 10.5 parts by weight of zinc oxide and other additives were weighed into a balance and kneaded by a kneader. The kneaded composition was extruded by an extruder A bead type composition was prepared using a pellet machine, and injection foam was applied to produce a CONSOLE pad.
Example 3)
A resin mixture was prepared by using 25% of olefin block copolymer, 25% of ethylene vinyl acetate copolymer, 25% of polyethylene, alpha-olefin copolymer, other polymer, and EPDM as a rubber product in a weight ratio of 100% , 0.8 parts by weight of a crosslinking agent, 5.5 parts by weight of a foaming agent, 0.2 parts by weight of stearic acid and 10 parts by weight of zinc oxide and other additives were weighed into a balance and kneaded by a kneader. The kneaded composition was put in an extruder and extruded A bead-shaped composition was prepared using a pelletizer and injection foamed to produce a CONSOLE pad.
Comparative Example 1)
A resin mixture was made by using 60% of an ethylene vinyl acetate copolymer, 30% of an ethylene-vinyl acetate copolymer, an alpha-olefin copolymer, another polymer, and 10% of EPDM as a rubber product. To 100 parts by weight of the resin mixture, 0.8 part by weight of a cross- 5.0 parts by weight of a foaming agent, 0.2 parts by weight of stearic acid, 10.0 parts by weight of zinc oxide and other additives were weighed into a balance, and the mixture was kneaded by a kneader. The kneaded composition was extruded by an extruder, To prepare a CONSOLE pad by injection foaming.
The compositions of the CONSOLE pad raw materials in the above Examples and Comparative Examples are shown in Table 1 below.
Name of material
Other polymers, EPDM
4) alpha olefin copolymer, other polymer, EPDM (KOREA), 5) crosslinking agent -DCP
6) Blowing agent -JTR- gyungyang, 7) Stearic acid -LG chemistry 8) ZINC OXIDE -Hanil Chemical
2. Test method
Each of the specimens of the CONSOLE pad for a vehicle manufactured by the above Examples 1 to 3 and Comparative Example 1 was taken and the properties were measured in the following manner. The results are shown in Table 2 below.
1) Specipic gravity
The specific gravity of OBCs FOAM PAD foam was measured by 5 specimens of SLAB foam using SLAB mold, washed, dried and measured 5 times using automatic gravity meter.
2) Hardness
The hardness was measured by a Asker c type hardness meter based on ASTM D-2240.
3) Split tear strength
For the tear strength test, five specimens (10 × 25 × 100 mm) used in the same test were used, and the median value at the time of measurement was measured except that the deviation was not more than 20%.
4) Compression set%
The compression set was measured according to ASTM D 3754 at 50/6 hours.
Inspection items
PU-CONSOLE
Compression set
(Split tear strength)
As shown in Table 2, the CONSOLE pad foam for vehicles of Examples 1, 2, and 3 according to the present invention had a higher foaming and lower specific gravity than that of the CONSOLE pad foam for vehicle of Comparative Example 1, , But it was confirmed that the deterioration of the overall physical properties such as the mechanical strength such as the tear strength and the tear strength, the hardness, the spritzer, and the compression ratio of the permanent compression tends to be insignificant.
As shown in Table 2, the change of specific gravity and hardness is greatly reduced, but the change of tear strength and compression set is hardly observed. Therefore, it can be confirmed that the properties of low specific gravity foamed specimens are improved by the high - blown foam, so that the performance of the conventional PU foamed CONSOLE products is improved.
The product of the present invention can replace the conventional PU foam CONSOLE and can replace various automobile interior parts as shown in Table 3 which is used by applying the existing PU foam among the parts used for automobiles. Application of the OBCs composition of the present invention The inventors of the present invention have developed a manufacturing technique for foaming and injecting an interior material such as an OBCs foamed vehicle CONSOLE for automobiles having various shapes.
Related field
Pillars, instrument panels, etc. Finishes and skins
Engine fuel economy
Claims (9)
Wherein the resin composition further comprises a foaming agent, a crosslinking agent, stearic acid, and an additive.
Wherein the foaming agent is contained in an amount of 0.1 to 9 parts by weight per 100 parts by weight of the resin mixture and 0.1 to 3 parts by weight of a crosslinking agent per 100 parts by weight of the resin mixture.
The temperature of the inside of the screw of the injection machine is set to 80 to 100 ° C, the temperature of the front part of the injection screw gate is set to 100 to 130 ° C, the temperature of the mold is controlled to 145 to 180 ° C, To 7 minutes, and then the mold is instantly opened to foam simultaneously with the demolding.
The interior is made of sheet, glass pads, head liner, interior trim pillar, instrument panel, seat, cushioning material, console, armrest, backrest, head rest cushion, sun visor, various covers for noise reduction, Wherein the carbon material is selected from the group consisting of
Wherein the interior material is a console or an armrest.
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| KR1020140192205A KR20160082803A (en) | 2014-12-29 | 2014-12-29 | Olefin block copolymer composition, foam and console for automotive interior material and preparation thereof |
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| KR1020140192205A KR20160082803A (en) | 2014-12-29 | 2014-12-29 | Olefin block copolymer composition, foam and console for automotive interior material and preparation thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028955A (en) * | 2022-05-24 | 2022-09-09 | 江苏集萃先进高分子材料研究所有限公司 | Olefin block copolymer foam material, preparation method and performance prediction method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040017830A (en) | 2001-07-23 | 2004-02-27 | 톰슨 라이센싱 소시에떼 아노님 | System and method for broadcast of independently encoded signals on atsc channels |
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2014
- 2014-12-29 KR KR1020140192205A patent/KR20160082803A/en not_active Application Discontinuation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040017830A (en) | 2001-07-23 | 2004-02-27 | 톰슨 라이센싱 소시에떼 아노님 | System and method for broadcast of independently encoded signals on atsc channels |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115028955A (en) * | 2022-05-24 | 2022-09-09 | 江苏集萃先进高分子材料研究所有限公司 | Olefin block copolymer foam material, preparation method and performance prediction method |
| CN115028955B (en) * | 2022-05-24 | 2023-08-18 | 江苏集萃先进高分子材料研究所有限公司 | Olefin block copolymer foaming material, preparation method and performance prediction method |
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