KR20160032084A - Thermoplastic resin composition for vehicle interior material and molded product of vehicle interior material - Google Patents

Abstract

Provided is a thermoplastic resin composition for an interior material of vehicles, comprising a biomass-derived resin. The thermoplastic resin composition for an interior material of vehicles uses the biomass-derived resin, which replaces a petroleum-based thermoplastic resin, so as to reduce a generation amount of CO_2, thereby providing an environmentally friendly effect.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermoplastic resin composition for automobile interior materials,

A thermoplastic resin composition for an automobile interior material, and an automobile interior material molded article.

A composition containing a thermoplastic resin has a wide range of properties such as moldability, impact resistance, chemical resistance, low specific gravity and low cost, and is widely used for plastic molded articles and automobile interior and exterior materials. However, in addition to causing environmental pollution in the production of sheets and articles using the above composition, there is a problem in that it is difficult to recycle and thus post-treatment is very difficult and thus environmentally friendly.

In recent years, there have been a lot of researches to produce eco-friendly molded articles that replace the use of synthetic resin sheets and composite sheets which are not environmentally friendly.

One embodiment of the present invention provides a thermoplastic resin composition for automobile interior material comprising a biomass-derived resin replacing a petroleum-based thermoplastic resin.

Another embodiment of the present invention provides an automobile interior material molded article produced from the thermoplastic resin composition for automobile interior material.

In one embodiment of the present invention, there is provided a thermoplastic resin composition for automobile interior material comprising a biomass-derived resin.

The thermoplastic resin composition for an automobile interior material may contain 10 to 90 wt% of a pMC value according to ASTM D6866.

The biomass-derived resin may be selected from the group consisting of polyolefin, thermoplastic polyolefin (TPO), polylactic acid (PLA), cellulose, chitin, starch, thermoplastic starch (TPS) Polyhydroxyalkanoates (PHAs), polyvinyl alcohol, polyglycolic acid (PGA), polyethylene terephthalate (PET), polybutylene succinate (PBS), polybutylene terephthalate Polybutylene adipate terephthalate (PBAT), polybutylene adipate terephthalate (PBAT), polybutylene adipate-co-butylene succinate (PBAS), polybutylene adipate Polybutylene adipate-co-butylene succinate terephthalate (PBAST), polytrimethylene terephthalate (PTT), polycaprolactam (PCL, pol (ester-urethane), and a combination thereof. The present invention relates to a process for producing a polyurethane resin composition, which comprises the steps of:

The biomass-derived resin may be produced from the biofuels extracted from the biomass or by processing one biomass selected from the group consisting of corn, pig potatoes, sugar cane, sugar beet, and combinations thereof.

The automotive interior thermoplastic resin composition may further comprise a mixing resin selected from the group consisting of polyolefin, polyvinyl chloride, and combinations thereof.

The thermoplastic resin composition for an automobile interior material may contain about 1 to about 900 parts by weight of the mixing resin relative to 100 parts by weight of the biomass-derived resin.

The automotive interior thermoplastic resin composition may further include one additive selected from the group consisting of plasticizers, inorganic fillers, stabilizers, lubricants, and combinations thereof.

The additive may include about 5 to about 100 parts by weight based on 100 parts by weight of the biomass-derived resin.

In another embodiment of the present invention, there is provided an automobile interior material molded article comprising a sheet produced from the thermoplastic resin composition for automobile interior material.

The automobile interior molded product may further include a surface treatment layer.

The surface treatment layer may be formed by applying an EB curing type aqueous treatment agent or an EB curing type non-solvent treatment agent.

Since the thermoplastic resin composition for automobile interior material uses a resin derived from biomass that replaces petroleum thermoplastic resin, the generation amount of CO ₂ is reduced, and the automobile interior material molded product is treated with water or solvent to give volatile organic compounds (VOC) can do.

Hereinafter, embodiments of the present invention will be described in detail. However, the present invention is not limited thereto, and the present invention is only defined by the scope of the following claims.

In one embodiment of the present invention, there is provided a thermoplastic resin composition for automobile interior material comprising a resin derived from a bio-mass. The thermoplastic resin composition for an automobile interior material may be a mixture of the biomass-derived resin and a thermoplastic resin not originating in biomass.

The biomass-derived resin means a resin produced using biomass as a raw material. For example, biomass may be processed as biomass including cereals and plants such as corn, potatoes, sugarcane, sugar beet, or a combination thereof, or extracted from such biomass to produce methanol, ethanol, biodiesel Of biofuel can be obtained. The biomass-derived resin is produced from such a biofuel.

In the concrete examples, in the case of sugarcane or sugar beet, the biomass-derived polyethylene can be obtained by directly extracting the sugar and subjecting it to alcohol fermentation. Unlike a petroleum based fuel produced by the production of polyethylene while discharging carbon dioxide, the biomass-derived polyethylene resin is produced by bioethanol containing sugarcane as a raw material and is regenerable. In addition, production of carbon dioxide is considerably low , It is advantageous that carbon dioxide in the air can be used rather.

The biomass-derived resin is a substitute for chemical fuels due to the accumulation of carbon dioxide. In the course of forming a resin as a substitute resource, a conventional petroleum resin such as polyethylene resin and polypropylene resin is formed, ₂ can be reduced and the environmentally friendly resin.

In addition, the thermoplastic resin composition for automotive interior materials, including the biomass-derived resin, is environmentally friendly in that it can increase the content ratio of vegetable raw materials and vegetable additives that are compatible with the biomass resin even in the course of production such as composition polymerization, The mass-derived resin may be recyclable as a thermoplastic resin.

The biomass-derived resin includes not only resins directly extracted from a biomaterial but also biomass-derived monomers together with a biomaterial, or a resin prepared by using a material extracted from a biomaterial as a raw material.

As described above, the resin derived from the biomass is a resin as a substance itself extracted purely from the above-mentioned biogenic raw material, and a resin obtained by reacting a substance extracted from a biological raw material with another compound as a raw material, Even when the mass-derived resin is incorporated into the composition, the content of the biomass extracting component is changed.

The content of the biomass extracting component in the thermoplastic resin composition for automobile interior materials can be evaluated as a pMC (percent modern carbon) value according to ASTM D6866.

The pMC value can be measured or calculated by the carbon dating method as the content of carbon isotope ¹⁴ C varies in the bio raw material and the petroleum raw material.

 The pMC value of the thermoplastic resin composition for an automobile interior material can be controlled not only by the content of the biomass-derived resin but also by what type of biomass-derived resin is used.

The thermoplastic resin composition for an automobile interior material may have a pMC value of about 10 wt% to about 90 wt%. The thermoplastic resin composition for automobile interior material having the pMC value within the above range can realize an environmentally friendly effect while at the same time realizing properties suitable for use in automobile interior materials.

Examples of the biomass-derived resin include polyolefins such as polyethylene and polypropylene, thermoplastic polyolefin (TPO), polylactic acid (PLA), cellulose, chitin, starch, A thermoplastic starch (TPS), polyhydroxylalkanoates (PHAs), polyvinyl alcohol, polyglycolic acid (PGA), polyethylene terephthalate (PET), polybutylene succinate (PBAS), polybutylene adipate terephthalate (PBAT), polybutylene adipate terephthalate (PBST), polybutylene adipate terephthalate (PBST), polybutylene succinate adipate-co-butylene succinate, polybutylene adipate-co-butylene succinate terephthalate (PBAST), polytrimethylene terephthalate (Ester-urethane), and the like. Examples of the polytrimethylene terephthalate (PTT), polycaprolactone (PCL), polyamide (PA), polyurethane (PU) May be used.

As described above, the biomass-derived resin may be directly extracted from the biomass such as PLA and PHAs, or may be obtained from the biomass-derived 1,4-butanediol such as PBS, PBT, PBAS, PBAT and PBAST ; PET produced from ethylene glycol derived from biomass; PTT produced from biomass-derived 1,3-propanediol; And TPS, which may be prepared from biomass-derived starch, glucose or lactose, as well as biomass-derived raw materials.

The automotive interior thermoplastic resin composition may further comprise a mixing resin to be mixed with the biomass-derived resin. The mixing resin may be a thermoplastic resin other than the biomass origin as described above.

The thermoplastic resin composition for an automobile interior material can determine the type and content of the resin included as a component in accordance with the use. For example, about 1 to about 900 parts by weight of the mixing resin may be included relative to 100 parts by weight of the biomass-derived resin.

The thermoplastic resin composition for an automobile interior material contains a biomass-derived resin instead of a petroleum-based resin, thereby making it possible to constitute an environmentally friendly composition. Like the case where the petroleum resin is blended to control the physical properties of the composition, The desired physical properties can be realized.

Since the thermoplastic resin composition for an automobile interior material can reduce the properties of a trade-off relationship when the content of the biomass glass resin is increased, the composition of the resin for blending can be appropriately configured and supplemented have.

In one embodiment, the automotive interior thermoplastic resin composition comprises 100 parts by weight of biomass-derived polyethylene, about 300 to about 500 parts by weight of partially crosslinked thermoplastic polyolefin (TPO), about 10 to about 200 parts by weight of unbridged TPO, 100 to about 200 parts by weight of ethylene octene rubber (EOR), and about 100 to about 200 parts by weight of an inorganic filler.

In another embodiment, the automotive interior thermoplastic resin composition comprises 100 parts by weight of biomass-derived polylactic acid, about 100 to about 200 parts by weight of biomass-derived polyethylene, about 100 to about 200 parts by weight of a compatibilizer, From about 100 to about 900 parts by weight and from about 100 to about 200 parts by weight of an inorganic filler.

In another embodiment, the thermoplastic resin composition for automobile interior material comprises 100 parts by weight of a biomass-derived polyester, about 100 to about 200 parts by weight of a biomass-derived polylactic acid, about 100 to about 200 parts by weight of a polyvinyl chloride, About 50 to about 200 parts by weight of an oil component of a plasticizer and about 50 to about 100 parts by weight of an inorganic filler.

Hereinafter, the resin described as a concrete example that can be used as the resin for mixing will be described in detail.

The polyolefin may specifically be polyethylene, polypropylene resin or the like, and the polyolefin may be in the form of a polymer, an oligomer polymer, a rubbery form on an elastomer, or a mixture thereof as a combination thereof.

The polyolefin as the rubbery form on the elastomer can be used for impact resistance reinforcement, for example, a copolymer of ethylene and an? -Olefin of C2-C10 can be used. In this case, the? -Olefin is not limited in its constitution, and for example, one selected from the group consisting of propylene, butene, pentene, hexene, propene, octene, and combinations thereof can be used. As another example, the elastomeric rubber type elastomeric polyolefin may include ethylene-propylene rubber (EPR), ethylene-propylene-diene rubber (EPDM), ethylene-butene rubber (EBR) , And ethylene-octene rubber (EOR), and combinations thereof.

The ethylene-octene rubber (EOR) is a resin that can be used to improve the disadvantages of the thermoplastic polyolefin resin which can be mixed together as the resin for mixing, and the resin is included together with the inorganic filler, EOR can be impregnated with the inorganic filler to impart a melt strength similar to that of the thermoplastic polyolefin resin, and to provide an odor improvement effect.

The grade of EOR is divided according to the content of octene. When the octene content is increased, the hardness is lowered to improve the soft texture of the product, but the calendering processability is lowered. Therefore, the content of octene is adjusted .

The polyolefin resin may be used as at least one of complete crosslinking, semi-crosslinking and crosslinking as a thermoplastic resin. Such a thermoplastic polyolefin (TPO) resin can increase the melt strength, which is a physical property required when the calendering method is applied to the above-mentioned thermoplastic resin composition for automobile interior materials. In order to ensure proper sagging property during vacuum molding, It can be divided into resin and semi-crosslinked TPO resin. The semi-crosslinked TPO resin can form a structure in which the polyolefin chain passes through the semi-crosslinked rubber, so that it is uniformly stretched when stretched, so that the deviation of the thickness of the product after molding can be reduced. The completely crosslinked TPO resin can be used to prevent troubles from occurring due to excessively high elongation percentage of the bio-resin composition, and to prevent degradation of trimmability after molding of the product.

For example, the polypropylene resin in the polyolefin resin may be used after calendering the thermoplastic resin composition for automobile interior material to increase the holding power of the molded article. By incorporating such polypropylene resin in an appropriate amount, it is possible to secure the melt strength to an appropriate level and to improve the moldability in the processing of the molded product thereafter, to prevent the explosion phenomenon during the vacuum molding by appropriately realizing the strength of the molded product, And the appearance quality of the product can be improved.

The polyvinyl chloride can be mixed with a plasticizer of an oil component extracted from animals and plants to produce a product which is more environmentally friendly than a conventional product and suitable for an infant with a low immunity.

The above-mentioned thermoplastic resin composition for automobile interior materials can usually contain known additives and can control the physical properties thereof. For example, the thermoplastic resin composition for automobile interior materials can be used as a plasticizer, inorganic filler, light stabilizer, heat stabilizer, antioxidant, lubricant, flame retardant, And a combination of these. For example, the additive may include about 5 to about 100 parts by weight based on 100 parts by weight of the biomass-derived resin.

For example, the inorganic filler may be used to increase mechanical properties of a molded article produced by the thermoplastic resin composition for automobile interior materials, and may be a mixture of at least one selected from calcium carbonate, calcium oxide, mica, talc, and the like .

In one embodiment, the automotive interior thermoplastic resin composition comprises 100 parts by weight of biomass-derived polyethylene, about 300 to about 500 parts by weight of partially crosslinked thermoplastic polyolefin (TPO), about 10 to about 200 parts by weight of unbridged TPO, 100 to about 200 parts by weight of ethylene-octene rubber (EOR), and about 100 to about 200 parts by weight of an inorganic filler.

In another embodiment, the automotive interior thermoplastic resin composition comprises 100 parts by weight of biomass-derived polylactic acid, about 100 to about 200 parts by weight of biomass-derived polyethylene, about 100 to about 200 parts by weight of a compatibilizer, From about 100 to about 900 parts by weight and from about 100 to about 200 parts by weight of an inorganic filler.

In another embodiment, the thermoplastic resin composition for automobile interior material comprises 100 parts by weight of a biomass-derived polyester, about 100 to about 200 parts by weight of a biomass-derived polylactic acid, about 100 to about 200 parts by weight of a polyvinyl chloride, About 50 to about 200 parts by weight of an oil component of a plasticizer and about 50 to about 100 parts by weight of an inorganic filler.

In another embodiment of the present invention, there is provided an automobile interior material molded article comprising a sheet produced from the thermoplastic resin composition for automobile interior material. As described above, since the automobile interior material molded product is manufactured by including the biomass-derived resin, it is possible to realize an environment-friendly effect of reducing CO ₂ by not using the resin produced from the petroleum-based raw material.

The automobile interior molded product may further include a surface treatment layer. The surface treatment layer may be formed using a surface treatment agent. Depending on the type of the solvent, the surface treatment agent may be an oil treatment agent, an aqueous treatment agent, a solventless treatment agent or the like. Depending on the curing method, a thermal curing treatment agent, A curing type treating agent and the like can be used, and they can be formed without limitation according to a known method. However, since emission of volatile organic compounds (TVOC) and formaldehyde may occur, the automobile interior material molded product may be cured through an electron beam (EB) using an aqueous treating agent or a solventless treating agent By forming the surface treatment layer using a treating agent, a molded article can be produced which is more responsive to environmental friendliness.

The method for producing the automobile interior material molded article is not particularly limited and may be produced by molding a known thermoplastic resin composition using the thermoplastic resin composition for automobile interior material.

For example, a mixture obtained by mixing the respective resin components of the thermoplastic resin composition for automobile interior material is prepared, and after melting the mixture, the molten melt is passed through a calender roll to be calendered to manufacture the automobile interior moldings can do.

The melting of the mixture may be performed by a conventional method using a uniaxial extruder, a twin-screw extruder, a kneader, a chestnut mixer, or the like. The above-mentioned kedling ring can be carried out using a known conventional method.

In particular, the melting of the mixture can be carried out at a temperature of from about 160 to about 230 캜. The molten melt may be calendered by passing it through a calender roll having a surface temperature of about 130 to about 180 ° C.

When the automobile interior material molded article further includes the surface treatment layer, the surface treatment agent is applied to the surface of the sheet made of the thermoplastic resin composition for automobile interior material, and then the surface treatment layer is formed by, for example, can do. When a surface treatment layer is formed by an electron beam, radicals are generated and polymerized and solidified by irradiation with an electron beam. Therefore, a polymerization initiator and the like are unnecessary different from thermal curing and UV curing, and there is little concern about deterioration. In addition, compared with thermal curing or UV curing, the energy utilization efficiency is high, and the curing speed is high, so productivity can be expected to be improved.

The surface treatment agent for the surface treatment may be an oil-based treatment agent or an aqueous treatment agent. The surface treatment agent that can be cured by irradiation with the electron beam may be a melamine resin, an epoxy resin, a rubber resin, an acrylic resin, Etc., or a combination thereof.

For example, when the surface treatment is performed with an acrylic base polymer, migration of the plasticizer is prevented, and the strength of the surface of the product is increased, resulting in excellent durability.

The surface treatment layer surface-treated by the electron beam improves the elongation of the automotive interior material molded article so that cracks, light resistance, and heat resistance are not deteriorated even after being molded from the thermoplastic resin composition for automobile interior material into the automotive interior material molded article. In addition, unlike UV curing and thermosetting, which use benzene and toluene as solvents, there is no need to use a solvent that may cause emission of harmful elements such as VOCs when the surface is treated with an electron beam. Therefore, Treatment can be made to meet the effect to be achieved of the automobile interior material molded product including the biomass-derived resin to improve the environment friendliness.

The automobile interior material molded product is excellent in physical properties such as solvent resistance, abrasion resistance, scratch resistance, light resistance, chemical resistance, and the like, and is used as a skin material for automobile interior parts without inducing indoor odor of automobile including environmentally- The room sensibility can be improved.

Hereinafter, examples and comparative examples of the present invention will be described. The following embodiments are only examples of the present invention, and the present invention is not limited to the following embodiments.

( Example )

Example  1-8 and Comparative Example  1-2

For each of Examples 1-8 and Comparative Example 1-2, the composition was prepared by using the compounds shown below in the compositions shown in Tables 1 and 2 below. The compositions of Examples 1-8 and 1-2 were measured for pMC according to ASTM D6866 and are shown in Tables 1 and 2 below.

After the mixed composition was melted, the melted melted material was passed through calender rolls in the apparatus, pressed, and calendered to form a sheet, thereby producing a sheet.

An EB curable aqueous treating agent was applied as a surface treating agent to one surface of the prepared sheet by spraying and then cured by an electron beam crosslinking machine to form a surface treatment layer to produce a sample of an automotive interior material molded article.

Example  And In the comparative example  Compound used:

- Fully crosslinked TPO resin: N65EH, HS R & A

- Partially crosslinked TPO resin: 8165N, modern EP

- TPO resin without curing agent: Q100F, Baselle

- Ethylene octene rubber: Engage 8180, DOW

- Polypropylene resin: B330F, SK energy

- Polyethylene resin: SF 316, Honam Petrochemical

- Production of biomass-derived thermoplastic polyolefin resin (TPO): Hardness Shore A 80, specific gravity 0.93, tensile strength 11 MPa, elongation 560%

- Production of biomass-derived polyethylene (PE): Melt index (MI) 1.0 (190 占 폚 / 2.16 kg), specific gravity 0.92, tensile strength 40 MPa, elongation 1400%

- compatibilizer: WD203, SUMITOMO

- Polylactic acid (PLA): 2002D, NatureWorks

- polyhydroxyalkanoate (PHA): EM10051, Ecoman

- Cellulose: CA-398-6, EASTMAN

- Inorganic filler: calcium carbonate

ingredient Example (parts by weight) One 2 3 4 5 Biomass derived resin TPO 100 80.7 66.2 79.7 67.4 PE - - 33.8 20.3 32.6 PLA 19.3 - - - PHA - - - - - cellulose - - - - - system 100 100 100 100 100 Fully crosslinked TPO 64.3 50 9.2 6.3 - Partially crosslinked TPO 357.1 161.5 29.2 - - Muga Bridge TPO 57.1 - - - 4.5 Ethylene-octene rubber (EOR) 71.4 30.7 - - - Polypropylene 28.6 - 7.7 7.6 3.4 Polyethylene - - - - - Compatibilizer - 19.2 - - - (Resin for mixing) (578.5) (261.4) (46.1) (13.9) (7.9) Inorganic filler 35.7 23.1 7.7 8.9 4.5 pMC 13wt% 25wt% 43wt% 52wt% 58wt%

ingredient Example (parts by weight) Comparative Example (% by weight) 6 7 8 One 2 Biomass derived resin TPO 67.9 65.9 61.1 - - PE 32.1 28.4 33.3 - - PLA - - - - - PHA - 5.7 - - - cellulose - - 5.6 - - system 100 100 100 - - Fully crosslinked TPO 2.4 - - 5 10 Partially crosslinked TPO 4.8 - - 25 10 Muga Bridge TPO 3.6 5.7 - 25 38 Ethylene-octene rubber (EOR) - - - 5 4 Polypropylene 4.8 - - 25 24 Polyethylene - - - 5 4 Compatibilizer - 5.7 5.6 - - (Resin for mixing) (15.6) (11.4) (5.6) Inorganic filler 3.6 2.3 5.6 10 10 Composition sum (100% by weight) Composition sum (100% by weight) pMC 65wt% 72wt% 79wt% 0 0

Experimental Example  1: Hardness

The hardness was measured according to ASTM D2240 and is shown in Tables 4 and 5 below.

Experimental Example  2: The tensile strength  And Elongation at break

The maximum load and elongation at break were measured using a tensile tester in accordance with ASTM D 638 at a test speed of 200 mm / min and a distance of 70 mm between test points.

Experimental Example  3: Heat aging resistance

After maintaining in a forced convection oven maintained at a temperature of 110 ± 2 ° C for 300 hours, the difference in ΔEcmc and fading due to visual observation at 45 ° by a spectrophotometer was measured by the gray scale specified in ISO 105-A02 Gray scale).

Experimental Example  4: Photo-aging property

The test panel specified in ISO 105 is used to determine the difference in fade between the black panel temperature 89 ± 3 ° C and the humidity resistance 50 ± 5% RH and 126 MJ / m ^2, , Respectively.

Experimental Example  5: Chemical resistance

The surface of the skin was wiped 10 times with a gauze moistened with the test solution as shown in Table 3, and the surface was left to stand for 1 hour at room temperature. The difference in fade between the eyes was judged by the gray color specified in ISO 105-A02, Respectively.

Test solution Remarks Glass cleaner Weakly alkaline glass cleaner detergent A mixture of 95% distilled water and 5% neutral detergent Washer liquid A mixture of 50% isopropyl alcohol and 50% distilled water gasoline Unleaded gasoline Polish wax HMC

Experimental Example  6: My Sun Cream Castle

Two sheets of the same size cotton cloth were layered on an aluminum plate (50 mm x 50 mm) according to GMN 10033, and then 0.25 g of a sun cream (Coppertone Waterbabies SPF 45) was applied on the entire surface of the specimen, After leaving for 1 hour in a thermostatic chamber at 2 ° C, the white cotton cloth and the aluminum plate were removed, left at room temperature for about 10 to 15 minutes, washed with a neutral detergent and dried to determine the discoloration of the discoloration caused by the naked eye. If there is little discoloration, it is good. If discoloration is slight, discoloration occurs. If there is no abnormality in quality, discoloration is judged to be bad.

Experimental Example  7: Smell

A glass container of 4 L was heated at 100 ° C. for 1 hour and then left at room temperature for another 1 hour to volatilize the odor in the glass container. The specimen was cut into 50 mm × 60 mm, heated again at 100 ° C. for 2 hours and then taken out at room temperature (23 ± 2 ° C.) Left for 60 minutes, cooled, and then the lid was opened by 3 to 4 cm. The degree of occurrence of odor was scored by scoring 1 point for severe odor occurrence, 3 for normal condition, and 5 for little odor occurrence.

Experimental Example  8: Calendering  Processability

The bio-forming composition was melted, compressed into rolls, and processed into a sheet form to produce a sheet for each compounding, and workability and surface conditions were visually confirmed. It was judged to be defective when the unmelted resin component remained on the surface, or the flowability was poor and a nonuniform surface was generated on the surface.

The physical property data measured for the samples of the automobile interior material molded product manufactured in Examples 1-8 and 1-2 are shown in Tables 4 and 5 below.

division Example One 2 3 4 5 Hardness [Shore A] 80 82 82 77 78 importance 0.92 0.93 0.91 0.92 0.91 Tensile strength (kgf / cm2) 142 191 164 164 117 Elongation at break (%) 650 591 572 572 621 Heat aging resistance
(gray scale) 4 4 4 4 4 Photo-aging property
(gray scale) 4 4 4 4 4 Chemical resistance
(gray scale) 4 4 4 4 4 My Sun Cream Castle Good Good Good Good Good Smell 4 4 4 4 4 Calendering processability Good Good Good Good Good

division Example Comparative Example 6 7 8 One 2 Hardness [Shore A] 79 81 84 81 79 importance 0.92 0.93 0.93 0.92 0.92 Tensile strength (kgf / cm2) 202 236 201 124 130 Elongation at break (%) 689 762 723 620 695 Heat aging resistance
(gray scale) 4 4 4 4 4 Photo-aging property
(gray scale) 4 4 4 4 4 Chemical resistance
(gray scale) 4 4 4 4 4 My Sun Cream Castle Good Good Good Good Good Smell 4 4 4 3 3 Calendering processability Good Good Good Good Good

The samples of the automobile interior material molded product manufactured in Example 1-8 were able to realize properties equivalent to or better than those of Comparative Example 1-2 produced using only petroleum-based water while ensuring environment friendliness using biomass-derived resin. .

Claims (9)

A biomass-derived resin, and a resin for mixing,
Wherein the resin for mixing comprises a thermoplastic polyolefin (TPO) and an ethylene-octene rubber (EOR)
Wherein the thermoplastic polyolefin comprises a partially crosslinked thermoplastic polyolefin and a fully crosslinked thermoplastic polyolefin,
Wherein the thermoplastic resin composition comprises 161.5 to 357.1 parts by weight of the partially crosslinked thermoplastic polyolefin, 50 to 64.3 parts by weight of the fully crosslinked thermoplastic polyolefin, and 30.7 to 71.4 parts by weight of the ethylene-octene rubber (EOR) based on 100 parts by weight of the biomass- ≪ / RTI >
The thermoplastic resin composition preferably has a pMC value of 10 to 90 wt% according to ASTM D6866
Thermoplastic resin composition for automobile interior material.
The method according to claim 1,
The biomass-derived resin may be selected from the group consisting of polyolefin, thermoplastic polyolefin (TPO), polylactic acid (PLA), cellulose, chitin, starch, thermoplastic starch (TPS) Polyhydroxyalkanoates (PHAs), polyvinyl alcohol, polyglycolic acid (PGA), polyethylene terephthalate (PET), polybutylene succinate (PBS), polybutylene terephthalate Polybutylene adipate terephthalate (PBAT), polybutylene adipate terephthalate (PBAT), polybutylene adipate-co-butylene succinate (PBAS), polybutylene adipate Polybutylene adipate-co-butylene succinate terephthalate (PBAST), polytrimethylene terephthalate (PTT), polycaprolactam (PCL, pol (ester-urethane), and combinations thereof. The term " polyol "
Thermoplastic resin composition for automobile interior material.
The method according to claim 1,
The biomass-derived resin may be obtained by processing a single biomass selected from the group consisting of corn, pig potatoes, sugarcane, sugar beet, and combinations thereof, or by processing the biomass produced from the biomass
Thermoplastic resin composition for automobile interior material.
The method according to claim 1,
Wherein the mixing resin further comprises polyvinyl chloride
Thermoplastic resin composition for automobile interior material.
The method according to claim 1,
The automotive interior thermoplastic resin composition further comprises one additive selected from the group consisting of a plasticizer, an inorganic filler, a stabilizer, a lubricant, and combinations thereof
Thermoplastic resin composition for automobile interior material.
6. The method of claim 5,
The additive is contained in an amount of 5 to 100 parts by weight based on 100 parts by weight of the biomass-
Thermoplastic resin composition for automobile interior material.
A molded article of an automobile interior material comprising a sheet produced from the thermoplastic resin composition for an automobile interior material according to any one of claims 1 to 6.
8. The method of claim 7,
The automotive interiors molded article may further comprise a surface treatment layer
Automotive interior parts molded products.
9. The method of claim 8,
The surface treatment layer is formed by applying an EB curing type water treatment agent or an EB curing type non-solvent treatment agent
Automotive interior parts molded products.