KR20160081466A - Polyolefin resin composites and manufactured by using the same - Google Patents

Polyolefin resin composites and manufactured by using the same Download PDF

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KR20160081466A
KR20160081466A KR1020140195346A KR20140195346A KR20160081466A KR 20160081466 A KR20160081466 A KR 20160081466A KR 1020140195346 A KR1020140195346 A KR 1020140195346A KR 20140195346 A KR20140195346 A KR 20140195346A KR 20160081466 A KR20160081466 A KR 20160081466A
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South Korea
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polyolefin resin
weight
ethylene
polypropylene
maleic anhydride
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KR1020140195346A
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Korean (ko)
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남병국
조성민
이형신
최창휴
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롯데케미칼 주식회사
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/22After-treatment of expandable particles; Forming foamed products
    • C08J9/228Forming foamed products
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/01Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013Fillers, pigments or reinforcing additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/16Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/18Homopolymers or copolymers of hydrocarbons having four or more carbon atoms

Abstract

Disclosed are a polyolefin resin composition capable of solving appearance issues of swirl marks, silver streaks, surface blistering, post blowing by replacing a compatibilizer in polyolefin resin for foam injection used in internal and external components of lightweight vehicles, wherein the compatibilizer is used conventionally for dispersing minerals; and moldings manufactured by using the same. The present invention provides the polyolefin resin composition, comprising: (A) 15 to 97 wt% of a polyolefin resin; (B) 0.1 to 15 wt% of a polypropylene-graft-maleic anhydride-amine (PP-g-MAH-Amine) compatibilizer; (C) 1 to 40 wt% of an inorganic filler; and (D) 1 to 30 wt% of thermoplastic elastomer rubber; and the moldings manufactured by using same.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a polyolefin resin composition,

The present invention relates to a polyolefin resin composition and a molded article using the same. More particularly, the present invention relates to a polyolefin resin for foam injection molding which is used in lightweight automotive interior / exterior parts.

Polypropylene resin has the advantages of excellent moldability, impact resistance, chemical resistance, low specific gravity, and low cost. Therefore, the automobile such as bumper, instrument panel, door trim panel, It is widely used for interior and exterior materials.

In general, commercialized polypropylene is isotactic polypropylene. When a chemical foaming agent is added to such a polypropylene resin in the prior art, when the foam is injected, the swirl gas swirl as shown in FIG. 1 is formed on the surface of the final molded article due to the rapid expansion of the foaming gas. mark staining, surface staining, surface blistering, post blowing, and the like.

Korean Patent No. 1007763 discloses a foamed article having a melt index of 3 to 50 g / 10 min and a propylene type mixed phase resin having a molecular weight distribution (PI) value of 7 or more and having improved flexural strength, flexural modulus and moldability, However, when the molecular weight distribution is too wide, there is a problem that the mechanical properties are deteriorated and the foam and appearance quality are deteriorated due to the low molecular weight propylene.

Therefore, it is possible to suppress the external permeation of the foaming gas such as nitrogen and carbon dioxide through the high-purity oxidation of the inorganic substance in the resin to improve the appearance quality of the product. However, since the lightweight automobile There is no description about the polyolefin resin for foam injection used for internal / external parts.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a polyolefin resin for foaming and injection molding that is used in lightweight automotive interior / exterior parts, Which is capable of solving the external problems such as sticking, marking, silver streaking, surface blistering, and post blowing, and a molded article produced using the same.

In order to solve the above problems, the present invention provides a polyolefin resin composition comprising (A) 15 to 97% by weight of a polyolefin resin; (B) 0.1 to 15% by weight of a polypropylene-graft-maleic anhydride-amine (PP-g-MAH-Amine) compatibilizer; (C) 1 to 40% by weight of an inorganic filler; And (D) 1 to 30% by weight of a thermoplastic elastomer rubber.

The polyolefin resin (A) may be a random copolymer obtained by polymerizing two or more comonomers selected from the group consisting of homo-polypropylene, propylene, ethylene, butylene and octene, an ethylene-propylene- Wherein the polyolefin resin composition is at least one selected from the group consisting of polyolefin block copolymers, polyethylene and copolymers of ethylene vinyl acetate and? -Olefins.

The polyolefin resin (A) is a copolymer of propylene homopolymer or propylene and 12 mol% or less of ethylene or a C 4 to C 10 olefin-based monomer.

The (B) polypropylene-grafted maleic anhydride-amine is a polypropylene-grafted maleic anhydride having a maleic anhydride graft ratio of 0.5 to 10% by weight and has a weight average molecular weight of 600 to 5,000 g / mol of a polyether amine (PEA) is grafted in an amount of 1 to 30% by weight.

The inorganic filler (C) is selected from the group consisting of talc, calcium carbonate, calcium sulfate, magnesium oxide, calcium stearate, wollastonite, mica, calcium silicate, nano clay, whisker, glass fiber, carbon fiber and carbon black And at least one polyolefin resin composition.

The (D) thermoplastic elastomer rubber is a copolymer of ethylene and a C 2 -C 10 -olefin.

Also, the? -Olefin is at least one selected from the group consisting of propylene, butene, pentene, hexene, propene and octene.

The thermoplastic elastomer rubber (D) may also be an ethylene-propylene rubber (EPR), an ethylene-propylene-diene rubber (EPDM), an ethylene-butene copolymer (EBR), an ethylene-octene copolymer (EOR) and a styrene- ). ≪ / RTI > The present invention provides a polyolefin resin composition comprising the polyolefin resin composition.

In order to solve the above-mentioned problems, the present invention provides a molded article produced by foaming and extruding the polyolefin resin composition.

And the molded product has a foamed cell average diameter of 400 탆 or less.

According to the present invention, by combining the polyolefin resin with an inorganic filler, a thermoplastic elastomer rubber and a polypropylene-graft-maleic anhydride-amine replacing conventional polypropylene-graft-maleic anhydride as a compatibilizer Light weighted polyolefin resin composition which can be applied to a foamed product used for interior / exterior parts of automobiles and which can improve the appearance quality without deteriorating the mechanical properties such as tensile strength, flexural modulus and impact strength, It is possible to provide a molded article manufactured using the same.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a photograph explaining defective surface appearance caused by molding a foamed injection molding using a conventional compatibilizing agent;
2 is a schematic view showing a comparison of dispersed states of inorganic materials when the compatibilizer (a) and conventional compatibilizer (b) according to the present invention are used,
FIGS. 3 and 4 are photographs taken on an optical microscope and photographs taken on a surface of an injection specimen produced according to Example 1, respectively,
Figs. 5 and 6 are photographs taken on an optical microscope and photographed on an injection specimen prepared according to Comparative Example 1. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Throughout the specification, when an element is referred to as "including " an element, it means that it can include other elements, not excluding other elements, unless specifically stated otherwise.

The polyolefin resin composition according to the present invention comprises (A) 15 to 97% by weight of a polyolefin resin; (B) 0.1 to 15% by weight of a polypropylene-graft-maleic anhydride-amine (PP-g-MAH-Amine) compatibilizer; (C) 1 to 40% by weight of an inorganic filler; And (D) 1 to 30% by weight of a thermoplastic elastomer rubber.

Hereinafter, each component of the polyolefin resin composition according to the present invention will be described in more detail.

(A) a polyolefin resin

The polyolefin-based resin used in the present invention is not particularly limited as long as it is a polyolefin-based resin conventionally used for automotive interior and exterior materials, and preferably two kinds of polyolefin resins selected from the group consisting of homo-polypropylene, propylene, ethylene, A block copolymer in which ethylene-propylene-rubber is blended with polypropylene, a copolymer of polyethylene, ethylene vinyl acetate and -olefin, and the like can be used, more preferably a propylene homopolymer Or a copolymer of propylene with 12 mol% or less of ethylene or a C 4 -C 10 olefin-based monomer may be used, and still more preferably, a polypropylene resin which is a copolymer of propylene and 12 mol% or less of ethylene is used .

When such a polypropylene resin is used, it has an advantage of excellent rigidity and impact resistance. Particularly, in the case of a copolymer of propylene and ethylene in an amount of 10 mol% or less, the phase separation is advantageous for improving the foaming property.

In the present invention, the polyolefin-based resin is contained in an amount of 15 to 97% by weight, preferably 50 to 85% by weight. In addition to the effect of improving the mechanical and chemical properties such as impact resistance, scratch resistance and chemical resistance, the composition is advantageous in molding when used as automobile interior and exterior materials in combination with other component contents according to the present invention within the above range. So that the appearance quality of the display device can be exerted.

(B) Polypropylene-graft-maleic anhydride-amine (PP-g-MAH-Amine) compatibilizer

The present invention contemplates means for solving the appearance quality problem such as occurrence of swirl marks on the surface of the final molded product due to the rapid expansion of the foaming gas when the chemical foaming agent is added to the polypropylene resin and foamed injection is performed. That is, in order to improve the appearance quality of the product by realizing the high-molecular oxidation of the inorganic substance in the resin to suppress the outer permeation of the foaming gas as much as possible, polypropylene-graft- Graft-maleic anhydride-amine (PP-g-MAH-Amine) synthesized as shown in the following Reaction Formula 2, which has a higher polarity than the acid (PP-g-MAH)

[Reaction Scheme 1]

Figure pat00001

[Reaction Scheme 2]

Figure pat00002

Such polypropylene-graft-maleic anhydride-amine has a structure in which ethylene glycol (EG), propylene glycol (PG) and the like are copolymerized with conventional polypropylene-graft-maleic anhydride, (A) and polypropylene-grafted maleic anhydride (b), which are conventional compatibilizers, can be uniformly dispersed in the polypropylene-grafted maleic anhydride- And the dispersion state of the inorganic material in use is schematically shown and compared.

The polypropylene-graft-maleic anhydride-amine can be prepared by melt polymerization or reactive extrusion using polypropylene-graft-maleic anhydride and polyether amine (PEA). The polypropylene-grafted maleic anhydride may have a maleic anhydride graft ratio of 0.5 to 10% by weight, preferably 1 to 3% by weight. When the graft ratio of maleic anhydride of polypropylene-graft-maleic anhydride is less than 0.5% by weight, the dispersibility of the inorganic filler may be lowered due to the low polarity. When the maleic anhydride graft ratio exceeds 10% by weight, The compatibility with the polyolefin-based resin which is high in hydrophobicity may be lowered. The polyetheramine may be a copolymer of polyethylene glycol (PEG) or polypropylene glycol (PPG) and may have a weight average molecular weight of 600 to 5,000 g / mol in an amount of 1 to 30% by weight . If the weight average molecular weight of the polyether amine is less than 600 g / mol or the content is less than 1% by weight, the degree of polarity may be lowered and the inorganic filler may be difficult to disperse. If the weight average molecular weight exceeds 5,000 g / mol or the content is less than 30% The polarity is too high and compatibility with the polyolefin-based resin may be deteriorated.

The polypropylene-graft-maleic anhydride-amine content for maximizing the appearance quality of the final molded article using the polyolefin resin composition according to the present invention may be 0.1 to 15% by weight, preferably 0.5 to 10% by weight .

(C) Inorganic filler

The inorganic filler used in the present invention is a component used for improving the mechanical properties of the final foamed molded article using the resin composition and inhibiting the outflow of the foamed gas, and the composition can be used without limitation. Preferably, at least one of talc, calcium carbonate, calcium sulfate, magnesium oxide, calcium stearate, wollastonite, mica, calcium silicate, nano clay, whisker, glass fiber, carbon fiber and carbon black can be used. It is preferable that the use of the inorganic filler is such that the rigidity and hardness of the polyolefin resin composition increase remarkably with an increase in the content, and therefore, wollastonite or talc can more preferably be used. At this time, the average particle diameter of the inorganic filler is preferably 1 to 30 탆, more preferably 5 to 10 탆. When the average particle diameter of the inorganic filler is less than 1 탆, the heat resistance and stiffness reinforcing effect may not be sufficiently exhibited. When the average particle diameter exceeds 30 탆, the polyolefin resin composition may not be easy to handle and work in extrusion molding.

In the present invention, the inorganic filler may be contained in an amount of 1 to 40% by weight, preferably 5 to 30% by weight. If the inorganic filler content is less than 1 wt%, heat resistance and stiffness reinforcing effect may not be apparent. If the inorganic filler content is more than 40 wt%, the inorganic filler may be transferred to the surface, and the appearance and scratch resistance of the foamed molded article may be deteriorated.

(D) Thermoplastic Elastomeric Rubber

The thermoplastic elastomer rubber used in the present invention is a component used for reinforcing impact resistance and is not limited in its constitution, but preferably a copolymer of ethylene and C 2 -C 10 alpha -olefin may be used. At this time, the? -Olefin is not limited in its constitution,

(EPR), an ethylene-propylene-diene rubber (EPDM), an ethylene-propylene-diene rubber (EPDM), and the like, ), Ethylene-butene copolymer (EBR), ethylene-octene copolymer (EOR), and styrene-butadiene (SBR).

In the case of the ethylene-octene copolymer (EOR), the effect of improving the impact strength is the most excellent by the octene group of the long side chain, and the stiffness which can be relatively lowered can be minimized. In the case of the ethylene-butene copolymer (EBR), those having a content of butene monomer (CO-Mononer) of 50% by weight or more may be used, more preferably a melt index of 0.5 to 150 g / 190 DEG C, 2.16 kgf), and a density of 0.868 to 0.885 g / cc may be used.

In the present invention, the thermoplastic elastomer rubber is contained in an amount of 1 to 30% by weight, preferably 5 to 20% by weight. If the content of the thermoplastic elastomer rubber is less than 1% by weight, the stiffening effect of the resin composition may not be satisfactory. If the content of the thermoplastic elastomer rubber is more than 30% by weight, the appearance and scratch resistance of the foamed molded article may be reduced.

The polyolefin resin composition according to the present invention can be produced by a known method. (A) 15 to 97% by weight of a polyolefin resin, (B) 0.1 to 15% by weight of a polypropylene-graft-maleic anhydride-amine (PP-g-MAH-Amine) compatibilizer, (C) To 40% by weight of the thermoplastic elastomer rubber and (D) 1 to 30% by weight of the thermoplastic elastomer rubber may be simultaneously mixed and melt extruded in an extruder to prepare a pellet. The melt extrusion may be performed at a screw rotation speed of 50 to 500 rpm and an extrusion temperature of 150 to 220 캜 using a single screw extruder, a twin screw extruder or a kneader at a retention time of 5 to 90 seconds, The melt extrusion temperature is preferably set to 160 to 200 캜.

It is needless to say that the polyolefin resin composition according to the present invention may further include various functional additives in addition to the above-mentioned components, depending on the intention of the operator, the end use of the final product, and the like. Examples of the functional additives include an antioxidant, a UV stabilizer, a flame retardant, a colorant, a plasticizer, a nucleating agent, a heat stabilizer and a slip agent. The amount of the additive to be used is, It can be adjusted to the optimum range in consideration of the production amount and the manufacturing process. The additive may be added in the step of mixing the above components, or may be kneaded in a separate additional step.

The products such as plastic molded articles manufactured using the polyolefin resin composition of the present invention are not limited in their fields, but they can be used as automobile interior and exterior materials, preferably applicable to automobile interior trim, instrument panel, glove box, console , And may be applied to vehicle exterior bumpers (MIC automobile bumpers). In the method for producing such a plastic molded article, a method known in the art may be used. In the case of applying to the manufacture of automobile interior and exterior materials, injection molding or injection blow molding may be used. Injected into a cavity of a previously closed mold, and then cooled and solidified.

The injection molded product produced through blow molding using the polyolefin resin composition and the foaming agent according to the present invention has a flexural modulus (ASTM evaluation method D790) of 10,000 kg / cm 2 or more, preferably 15,000 kg / cm 2 or more, more preferably 20,000 kg / (ASTM evaluation method D638) of not less than 100 kg / cm 2, preferably not less than 150 kg / cm 2, more preferably not less than 200 kg / cm 2, and an IZOD impact strength (ASTM evaluation method D256, 23 캜) cm 3 / cm or more, preferably 10 kg · cm / cm or more, more preferably 13 kg · cm / cm or more, and the average diameter of the foamed cells is 400 μm or less, preferably 300 μm or less It is possible to function as a material capable of realizing a non-coated surface because it has a foam appearance quality of 200 탆 or less.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

Example  One

, 15 wt% of an inorganic filler (KCM6300, d50 5 탆 talc, KOCH), 10 wt% of a thermoplastic elastomer rubber (EG-8842, EOR, DOW) and 40 wt% of a polypropylene resin (JM-370, Lotte Chemicals) The mixture was mixed with a Henschel mixer for 3 minutes in the composition of graft-maleic anhydride-amine (AM-1126H, 1 weight% MAH grft ratio of MW and 6 weight% of PEA grat ratios, Lotte Chemicals) (screw diameter 30 mm, L / D 40) at a temperature of 160 to 200 DEG C and a screw rotation speed of 400 rpm to prepare a polyolefin resin composition. Thereafter, 3 phr of a foaming agent (H-3510, sodium bicarbonate, EIWA) was added to the polyolefin resin composition, injected at a thickness of 2 mm using an injection molding machine, and then formed into a 2 mm mold to prepare a foamed injection specimen. FIG. 3 shows photographs taken on an optical microscope of the manufactured injection specimen, and FIG. 4 shows photographs taken on the surface.

Example  2

Foaming injection specimens were prepared in the same manner as in Example 1, except that the polypropylene resin content was adjusted to 73 wt% and the polypropylene-graft-maleic anhydride-amine content to 2 wt% in Example 1.

Example  3

Except that a polypropylene-graft-maleic anhydride-amine (AM-4126H, 4 wt% MW 40,000 g / mol MAH grut ratio, PEA grut ratio 6 wt%, Lotte Chemicals) was used as a compatibilizer in Example 1 A foamed injection specimen was produced in the same manner as in Example 1.

Example  4

Foaming injection specimens were prepared in the same manner as in Example 3, except that the polypropylene resin content was adjusted to 73 wt% and the polypropylene-graft-maleic anhydride-amine content to 2 wt% in Example 3.

Comparative Example  One

Foaming injection specimens were prepared in the same manner as in Example 1, except that the polypropylene resin content was adjusted to 75 wt% without using polypropylene-graft-maleic anhydride-amine in Example 1. FIG. 5 shows a photograph of the injection specimen taken by an optical microscope, and FIG. 6 shows a photograph of the specimen taken on the surface.

Comparative Example  2

Except that polypropylene-graft-maleic anhydride (CM-1120H, MW 100,000 g / mol, MAH grft ratio 1 wt%, Lotte Chemical) was used as a compatibilizer in Example 1, An injection specimen was prepared.

Comparative Example  3

In Comparative Example 2, foamed injection specimens were prepared in the same manner as in Comparative Example 2 except that the polypropylene resin content was adjusted to 73% by weight and the polypropylene-grafted maleic anhydride content to 2% by weight.

Comparative Example  4

In Comparative Example 2, a foamed injection specimen was prepared in the same manner as in Comparative Example 2 except that the polypropylene resin content was adjusted to 65% by weight and the polypropylene-grafted maleic anhydride content was adjusted to 10% by weight.

The composition (unit: wt%) constituting the polyolefin resin composition according to the above Examples and Comparative Examples is summarized in Table 1 below.

Figure pat00003

Test Example

The mechanical properties, the appearance quality and the average diameter of the foamed cells of the injection specimens prepared according to the above Examples and Comparative Examples were measured according to the following methods, and the results are shown in Table 2 below.

[How to measure]

(1) Tensile strength (yield): Measured according to ASTM evaluation method D638.

(2) Flexural modulus: Measured according to ASTM evaluation method D790.

(3) IZOD impact strength (23 캜): measured according to ASTM evaluation method D256.

(4) Appearance quality: The evaluation of five quality evaluators was averaged and relatively evaluated.

(5) Average diameter of foamed cell: The average diameter of the foamed cell was measured in the range of 1 x 1 cm using an optical microscope.

Figure pat00004

Referring to Table 2 and FIG. 3 to FIG. 6, an inorganic filler, a thermoplastic elastomer rubber, and a polypropylene-graft-maleic anhydride-amine as a compatibilizer are combined with an optimal composition to produce a polyolefin resin (Examples 1 to 4), polypropylene-graft-maleic anhydride-amine was not used as a compatibilizing agent (Comparative Example 1), or polypropylene-graphene resin as a conventional compatibilizer It was confirmed that the mechanical properties such as tensile strength, flexural modulus and impact strength were excellent, and appearance quality and uniformity of foamed cells were improved, compared with the case of using maleic anhydride (maleic anhydride) (Comparative Examples 2 to 4) -Grafting-maleic anhydride-amine), the mechanical properties and foaming characteristics are further improved.

The preferred embodiments of the present invention have been described in detail above. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning, range, and equivalence of the claims are included in the scope of the present invention Should be interpreted.

Claims (10)

(A) 15 to 97% by weight of a polyolefin-based resin;
(B) 0.1 to 15% by weight of a polypropylene-graft-maleic anhydride-amine (PP-g-MAH-Amine) compatibilizer;
(C) 1 to 40% by weight of an inorganic filler; And
(D) 1 to 30% by weight of a thermoplastic elastomer rubber;
And a polyolefin resin.
The method according to claim 1,
Wherein the polyolefin resin (A) is a random copolymer obtained by polymerizing two or more comonomers selected from the group consisting of homo-polypropylene, propylene, ethylene, butylene and octene, a random copolymer obtained by blending an ethylene- Block copolymers, and copolymers of polyethylene and ethylene-vinyl acetate and -olefins.
The method according to claim 1,
Wherein the polyolefin-based resin (A) is a copolymer of propylene homopolymer or propylene and 12 mol% or less of ethylene or a C 4 -C 10 olefin-based monomer.
The method according to claim 1,
The polypropylene-graft-maleic anhydride-amine (B) is a polypropylene-grafted maleic anhydride having a maleic anhydride graft ratio of 0.5 to 10% by weight and has a weight average molecular weight of 600 to 5,000 g / wherein the polyether amine (PEA) is grafted in an amount of 1 to 30% by weight.
The method according to claim 1,
The inorganic filler (C) is selected from the group consisting of talc, calcium carbonate, calcium sulfate, magnesium oxide, calcium stearate, wollastonite, mica, calcium silicate, nano clay, whisker, glass fiber, carbon fiber and carbon black At least one polyolefin resin composition.
The method according to claim 1,
Wherein the thermoplastic elastomer rubber (D) is a copolymer of ethylene and a C 2 to C 10 ? -Olefin.
The method according to claim 6,
Wherein the? -Olefin is at least one selected from the group consisting of propylene, butene, pentene, hexene, propene and octene.
The method according to claim 1,
The thermoplastic elastomer rubber (D) is preferably an ethylene-propylene rubber (EPR), an ethylene-propylene-diene rubber (EPDM), an ethylene- Wherein the polyolefin resin composition is at least one selected from the group consisting of polyolefin resin and polyolefin resin.
A molded article produced by foaming and extruding the polyolefin resin composition of any one of claims 1 to 8. 10. The method of claim 9,
Wherein the molded article has an average diameter of the foamed cells of 400 m or less.
KR1020140195346A 2014-12-31 2014-12-31 Polyolefin resin composites and manufactured by using the same KR20160081466A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109721801A (en) * 2017-10-27 2019-05-07 中国石油化工股份有限公司 A kind of polypropylene base-material for gas infiltration saturation foaming
KR20190075506A (en) * 2017-12-21 2019-07-01 주식회사 삼양사 Thermoplastic elastomer resin composition comprising mica and molded article comprising the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109721801A (en) * 2017-10-27 2019-05-07 中国石油化工股份有限公司 A kind of polypropylene base-material for gas infiltration saturation foaming
KR20190075506A (en) * 2017-12-21 2019-07-01 주식회사 삼양사 Thermoplastic elastomer resin composition comprising mica and molded article comprising the same

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