KR101033275B1 - Polypropylene resin composition having wood and glass fiber - Google Patents
Polypropylene resin composition having wood and glass fiber Download PDFInfo
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- KR101033275B1 KR101033275B1 KR1020100065178A KR20100065178A KR101033275B1 KR 101033275 B1 KR101033275 B1 KR 101033275B1 KR 1020100065178 A KR1020100065178 A KR 1020100065178A KR 20100065178 A KR20100065178 A KR 20100065178A KR 101033275 B1 KR101033275 B1 KR 101033275B1
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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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
- C08L23/10—Homopolymers or copolymers of propene
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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
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
Abstract
The present invention relates to a polypropylene resin composition comprising wood and glass fibers, and to improving the physical properties of the resin composition, the polypropylene as a main material, including modified polypropylene, glass fibers and wood, impact resistance and flexural modulus The present invention relates to a polypropylene resin composition which is excellent in improving the shrinkage anisotropy problem of warpage and deformation during product molding.
The polypropylene resin composition according to the present invention can be usefully used for automobile parts, and among them, it can be usefully applied to various industrial supports such as door trim panels, housing parts of engine parts, timing belt covers, etc., and also has excellent economic efficiency. There is.
Description
The present invention relates to a polypropylene resin composition comprising wood powder and glass fiber, and to improving the physical properties of the resin composition based on polypropylene, including modified polypropylene, glass fiber and wood, impact resistance and bending The present invention relates to a polypropylene resin composition having excellent modulus of elasticity and improving shrinkage anisotropy problems that cause warpage and deformation during product molding.
Recently, with the development of the IT industry as well as the automotive industry, research on replacing electrical / electronic parts with plastics is being actively conducted in terms of light weight, low manufacturing cost, improved design freedom, and simplified manufacturing process. Among these plastic substitute materials, polypropylene resin is widely used throughout the industry because of excellent toughness, chemical resistance, reinforcing agent addition effect and moldability among mechanical properties. However, in the case of the polypropylene resin, heat resistance is insufficient, and there are disadvantages in that the impact strength is poor and the molding shrinkage rate is high because it is a crystalline polymer. In order to alleviate these drawbacks, a technique of polymer alloying or adding an inorganic material has been applied. Among them, when preparing a reinforced polypropylene resin composition using inorganic materials, glass fibers or minerals are used as inorganic materials. By using these, the rigidity and heat resistance of the resin composition are excellent, but the impact resistance is poor. As a result, the shrinkage rate of the molding becomes small, but it is difficult to solve the shrinkage anisotropy. In addition, when the reinforced polypropylene resin composition is prepared through an alloy with other polymers, general purpose plastics are mainly used as the other polymers, and the general purpose plastics may be rubber-based or polystyrene-based. However, it is difficult to obtain satisfactory physical properties with the alloy alone composition. That is, after alloying, the inorganic material should be used again to improve the mechanical rigidity and shrinkage anisotropy. In this case, the impact resistance is improved, but the manufacturing cost is high, which is not economical, and high molding shrinkage is not preferable.
Meanwhile, US Pat. No. 4,866,110 discloses a composition suitable for applications such as automobile door trim by putting rice flour and glass fiber rock wool on a closed thin plate, but the use of the composition is not good due to poor fluidity due to extrusion molding. The specific gravity increases, and it has disadvantages such as poor appearance.
Korean Laid-Open Patent Publication No. 2000-0007914 discloses a method using a polyvinyl chloride (PVC) resin and a polystyrene (PS) resin as a method of manufacturing artificial wood, but since the material itself is not durable, there is a limit to reaching mechanical strength to a desired level. there was.
The present invention is to solve the problems of the prior art as described above, the polypropylene resin composition excellent in flexural modulus and impact resistance compared to the conventional polypropylene resin composition, the problem of shrinkage anisotropy which is a problem of bending, deformation during product molding The purpose is to provide.
More specifically, the present invention improves the mechanical strength by using a combination of glass fibers as a part to improve the mechanical properties, utilizing the advantages of light, economical and easy to process wood compared to other reinforced materials, and problems of shrinkage anisotropy In order to solve the problem and at the same time can be recycled in relation to environmental friendliness and to provide a polypropylene resin composition for minimizing the environmental load of various wood industry.
The present invention has been made to achieve the above object, and provides a polypropylene resin composition comprising wood and glass fibers.
Hereinafter, the present invention will be described in more detail.
At this time, if there is no other definition in the technical terms used in the present invention, it has a meaning commonly understood by those skilled in the art to which the present invention belongs, and in the following description unnecessarily obscure the subject matter of the present invention. Description of known functions and configurations that may be omitted.
Specifically, the present invention is 50 to 75% by weight of polypropylene resin; 3 to 15% by weight of a modified polypropylene resin comprising a graft copolymer of polypropylene resin and dicarboxylic acid and organic peroxide; 5 to 20% by weight of the glass fiber coated with the silane coupling agent; And 5 to 20% by weight of powdery vegetable fiber material.
The polypropylene resin may be used commercially available homo propylene resin, it is preferable that the range of 20 ~ 110 when the flow index (g / 10 minutes) evaluation according to ASTM D1238. If the flow index is less than 20, the reinforcement efficiency is low, the surface of the product is poor, if it exceeds 110 there is a disadvantage that the impact resistance is poor.
The polypropylene resin is preferably included in 50 to 75% by weight. If the content is less than 50% by weight, the glass fiber and wood content is relatively increased, the flowability is lowered, there is a problem that the appearance of the molded article is not good. If it exceeds 75% by weight, there is a problem that the heat resistance and mechanical rigidity are lowered.
Next, the modified polypropylene resin includes a graft copolymer of polypropylene resin, dicarboxylic acid, and organic peroxide, and the modified polypropylene resin improves thermal stability, increases hygroscopicity, and dyeability by chemically modifying the polypropylene resin. The physical properties such as improvement, antistatic effect and adhesion can be changed. Dicarboxylic acids and organic peroxides are used as the representative modifying materials, and graft copolymerization may be used as the modifying method.
The method for preparing the graft copolymer of the modified polypropylene resin is not particularly limited, and a solution, a melt, a solid phase method, and the like are the best known methods. As an example of the modified polypropylene, U.S. Pat. A method of grafting in a solid phase is disclosed, and US Pat. No. 5,344,888 discloses a polypropylene resin using an extruder at a high temperature of 185 ° C. or higher in the presence of a radical initiator and a catalyst such as diallyl maleate and alkenyl substituted cyanurate. A method of continuously grafting maleic anhydride is disclosed.
In the present invention, the molten graft copolymerization method was used as a method for preparing the graft copolymer of the modified polypropylene resin, and the molten graft copolymerization method according to the present invention is a method of grafting with maleic anhydride.
The modified polypropylene resin is used at the same time as the polypropylene resin in the final resin composition, by including the modified polypropylene resin, it is easy to mold, the surface properties of the molded article is improved and the anisotropic shrinkage characteristics are further improved. .
The modified polypropylene resin is characterized in that it comprises 5 to 15 parts by weight of dicarboxylic acid and 2 to 8 parts by weight of organic peroxide based on 100 parts by weight of polypropylene resin.
The dicarboxylic acid is one or two or more selected from maleic acid, itaconic acid, citraconic acid, citraconic acid, (C2-C10) alkenyl succinic acid and its anhydrides. It is characterized by a mixture, and most preferably maleic acid can be used.
The dicarboxylic acid may be included in an amount of 5 to 15 parts by weight based on 100 parts by weight of the polypropylene resin contained in the modified polypropylene resin. If the content is less than 5 parts by weight, the graft efficiency is lowered, and if the content exceeds 15 parts by weight, there is a problem that an unreacted substance is generated.
The polypropylene resin included in the modified polypropylene resin may also be used commercially available homo propylene resin, it is preferable that the flow index (g / 10 minutes) based on ASTM D1238 is 20 to 110.
The organic peroxides are benzoyl peroxide, dicumyl peroxide, 2,5-dimethyl-2,5-di- (tertiary-butylperoxy) -hexyne-3 (2,5-dimethyl -2,5-di- (tert-butyl peroxy) hexine-3), di-tert-butyl peroxide, 1,3-bis (tert-butyl peroxyisopropyl) Benzene (1,3-bis (tert-butyl peroxy isopropyl) benzene), di-tert-butyl peroxy azelate, 2,5-dimethyl-2,5-di- ( Tert-butylperoxy) -hexane (2,5-dimethyl-2,5-di- (tert-butyl peroxy) hexane), tert-butylcumyl peroxide, tert-butylper Tert-butyl peroxy-3,5,5-trimethylhexoate, p-chlorobenzoyl peroxide, tert-butyloxy benzoate, methylethylketone peroxide, tris- (tert-butyl pe) roxy) triazine), tert-butyl peroxyacetate, tert-butyl peroxy isopropyl carbonate (tert-Butyl peroxy isopropyl carbonate), characterized in that one or two or more selected from Most preferably, benzoyl peroxide can be used.
The organic peroxide is used for the efficiency of the reaction as a radical initiator, it is preferably included in 2 to 8 parts by weight based on 100 parts by weight of the polypropylene resin contained in the modified polypropylene resin. If the content is less than 2 parts by weight, the performance as an initiator is low, and if it exceeds 8 parts by weight, there is a problem that results in the graft efficiency is rather reduced.
The modified polypropylene resin is preferably contained in 3 to 15% by weight, more preferably 5 to 12% by weight. If the content is less than 3% by weight, the flowability of the resin is improved, but the compatibility with the polypropylene resin is lowered, and the impact strength is lowered. If the content is more than 15% by weight, the rigidity and heat resistance are deteriorated. There exists a problem that the surface state of a final resin composition will become bad.
Glass fiber used in the present invention is a glass fiber that is commonly used in the form of chop (Chop) commonly used as 'G' or 'K' glass, the main component is CaO SiO 2 Al 2 O 3 , 10 to 20 wt% of CaO, 50 to 70 wt% of SiO 2 , and 2 to 15 wt% of Al 2 O 3 .
In addition, the glass fiber uses a silane coupling agent coated on the surface of the glass fiber to improve interfacial adhesion with the final resin composition.
By using the glass fiber surface-treated with the silane coupling agent can improve the interfacial adhesion to prevent the separation phenomenon with the final resin composition, there is an effect of improving the mechanical properties such as impact strength.
The glass fiber may have a diameter of 10 to 13 μm, and a length of 3 to 3.5 mm, and may have a low physical property when the glass fiber is less than 10 μm, and a surface area between the resin and the glass fiber may be lowered when the glass fiber is more than 13 μm. For lengths less than 3mm, the effect is negligible and for more than 3.5mm the surface may be poor.
The glass fiber is preferably included in 5 to 20% by weight. If the content is less than 5% by weight, the flexural modulus is lowered. If the content is more than 20% by weight, the improvement in shrinkage anisotropy is not preferable.
Wood used in the present invention serves as a filler as a powdery vegetable fiber. The powdery vegetable fibrous material includes one or two or more mixtures selected from sawdust, rice hull, and wood flour, and the specific gravity is 0.5 g / cm 3 or less.
Compared with the polypropylene resin having a specific gravity of 0.89 to 0.97 g / cm 3, the addition of wood as a powdery vegetable fiber material is excellent in reducing the specific gravity and solves the shrinkage anisotropy problem that may occur when glass fiber is added alone. As an environmentally friendly material, there is a very good effect. The powdery vegetable fiber may be used by grinding bran, chaff, sawdust, wood flour, or the like, or by grinding the shell of cereals such as rice and barley. It is best to use wood flour or sawdust, and the shape is not particularly limited, but the size is 3 mm or less, more preferably 0.1 mm to 3 mm. When the size of the wood exceeds 3 mm, dispersibility is poor when the polypropylene resin is impregnated, and the reinforcing efficiency is lowered along with the decrease in rigidity in the final physical properties, which is not preferable.
The powdery vegetable fiber is preferably contained in 5 to 20% by weight, if the content is less than 5% by weight it is difficult to obtain the wood texture as expected, severely shrinkage anisotropy problem is severely caused by warpage, deformation, etc. Not desirable In addition, when the content exceeds 20% by weight, the processability of the mixture is lowered and the volatile components are generated at the same time, leading to a decrease in the impact strength and not suitable for injection and extrusion molding.
In the present invention, the polypropylene resin composition includes tris- (2,4-di-butylphenyl) -phosphate containing an amide group as a heat-resistant agent within a range that does not impair the object of the present invention. ditert-butylphenyl) phosphate) and N-N'-hexamethylenebis (3.5-dibutylbutyl-4-hydroxy-hydrocinamide) (N, N'-hexamethylenebis (3,5-di-tert-butyl-4) It may further comprise 0.1 to 0.5% by weight of a 1: 1 mixture of -hydroxy-hydrocinnamamide) In the present invention, Iganox B1171 (trade name) of Ciba-Geigy may be used as the heat resistant agent.
In addition, in the present invention, styrene-ethylene-butadiene-styrene (SEBS) or ethylene-propylene diene monomer (ethylene-propylene diene monomer (EPDM)) is added to the polypropylene resin composition in an amount of 0.1 to 1% by weight. It may include.
When the styrene-ethylene-butadiene-styrene is further included in the above range, the flexural modulus and durability are improved, and when the ethylene-propylene diene monomer is further included in the above range, processability and impact strength are further improved. There is an excellent effect.
The polypropylene resin composition according to the present invention can be usefully used for automobile parts, and among them, it can be usefully applied to various industrial supports such as door trim panels, housing parts of engine parts, timing belt covers, etc., and also has excellent economic efficiency. .
As an extruder used in producing the polypropylene resin composition of the present invention, a twin screw extruder may be used, and the temperature of the cylinder barrel is preferably performed at 200 to 215 ° C. In order to maximize the physical properties of the polypropylene resin composition by using an extruder having three inlets, polypropylene resin and modified polypropylene resin are put in the first inlet, glass fiber is put in the second inlet, and wood is inserted in the third inlet. It is best to do it. The secondary and tertiary inlets should be installed as close to the discharge part of the extruder as possible, in order to minimize the damage of the inorganic material by the shear of the screw in the extruder. In addition, it is desirable to minimize the residence time as part of maximizing the physical properties of the composition during melt kneading, and to reduce the pressure to 150 mmHg or less by installing a decompression device called a vent near the tertiary inlet and outlet. effective.
The polypropylene resin composition according to the present invention has excellent flexural modulus and impact resistance as compared to the conventional polypropylene resin composition, and has an effect of improving a shrinkage anisotropy problem that causes warpage and deformation during product molding.
In addition, the polypropylene resin composition according to the present invention can be usefully used for automobile parts, and among them, it can be usefully applied to various industrial supports such as door trim panels, housing parts of engine parts, timing belt covers, etc., and also has excellent economic efficiency. It works.
Hereinafter, the present invention can be better understood by the following examples, which are intended to illustrate the present invention and are not intended to limit the protection scope of the present invention.
Test Example 1 Impact Strength
Izod Notched impact strength was measured at room temperature by fabricating 1/4 inch specimens in accordance with ASTM D256, and the results of less than 6 kgcm / cm were judged as poor. For the measurement, 258-pc-l of Beast Dasa was used.
Test Example 2 Flexural Modulus
The flexural modulus was measured by making 1/8 inch specimens in accordance with ASTM D790, and the results of less than 40,000 kg / cm 2 were judged as defective. Instron 3367h was used for the measurement.
Test Example 3 Shrinkage Rate Variation (Shrinkage Anisotropy Evaluation)
According to ASTM D995, 100 mm diameter specimens were fabricated, and the specimens were allowed to stand for 48 hours at room temperature and 50% absolute humidity, and then the shrinkage in the flow direction and the direction perpendicular to the gate was evaluated. The deviation was calculated based on Results of less than 120% were judged to be poor.
[Examples 1 to 10]
After melt kneading in a twin screw extruder heated to 210 ℃ in the composition of Table 1 to make a chip (chip) and dried by using a dehumidifying dryer for 5 hours at 80 ℃ and melt kneading using a heated screw injection machine Each specimen was fabricated at the same temperature as when. Physical property measurement results are shown in Table 2 below.
TABLE 1
* Polypropylene Resin: Daehan Emulsifier CB5230
Modified Polypropylene Resin
1) APO-1: graft copolymer comprising 7 parts by weight of maleic acid and 3 parts by weight of benzoyl peroxide based on 100 parts by weight of polypropylene
2) APO-2: graft copolymer comprising 10 parts by weight of maleic acid and 7 parts by weight of benzoyl peroxide based on 100 parts by weight of polypropylene
3) APO-3: graft copolymer comprising 13 parts by weight of maleic acid and 7 parts by weight of benzoyl peroxide based on 100 parts by weight of polypropylene
* Glass fiber: Kumkang Chemical CS 311
* Wood powder: The size of wood powder less than 2mm
TABLE 2
[Comparative Examples 1 to 8]
To prepare a test specimen using the same method as in Examples 1 to 10 with the composition of Table 3, the results of measuring the physical properties are shown in Table 4.
[Table 3]
* Polypropylene Resin: Daehan Emulsifier CB5230
Modified Polypropylene Resin
1) APO-1: graft copolymer comprising 7 parts by weight of maleic acid and 3 parts by weight of benzoyl peroxide based on 100 parts by weight of polypropylene
2) APO-2: graft copolymer comprising 10 parts by weight of maleic acid and 7 parts by weight of benzoyl peroxide based on 100 parts by weight of polypropylene
3) APO-3: graft copolymer comprising 13 parts by weight of maleic acid and 7 parts by weight of benzoyl peroxide based on 100 parts by weight of polypropylene
4) APO-4: graft copolymer comprising 3 parts by weight of maleic acid and 7 parts by weight of benzoyl peroxide based on 100 parts by weight of polypropylene
5) APO-5: graft copolymer comprising 13 parts by weight of maleic acid and 1 part by weight of benzoyl peroxide based on 100 parts by weight of polypropylene
* Glass fiber: Kumkang Chemical CS311
* Wood powder: The size of wood powder less than 2mm
[Table 4]
As shown in Table 2 and Table 4, the polypropylene resin composition according to the present invention comprises 50 to 75 wt% of a polypropylene resin; 3 to 15% by weight of a modified polypropylene resin comprising a graft copolymer of polypropylene resin and dicarboxylic acid and organic peroxide; 5 to 20% by weight of the glass fiber coated with the silane coupling agent; And 5 to 20% by weight of wood; it was confirmed that the flexural modulus and impact strength were very excellent, and the shrinkage ratio was also small compared to the comparative example, thereby improving physical properties.
Comparative Examples 1 and 2 are cases in which the content of the modified polypropylene resin is outside the scope of the present invention, and it was confirmed that the impact strength and the flexural modulus were decreased, respectively.
In addition, Comparative Examples 3 and 4 is a case where the content of the glass fiber is out of the range of the present invention, it was confirmed that the flexural modulus is lowered and the shrinkage deviation is high.
In Comparative Examples 5 and 6, the content of wood flour was outside the range of the present invention, and the variation in the shrinkage ratio was high, respectively, and it was confirmed that the impact strength was lowered.
Finally, Comparative Examples 7 and 8 is a case where the content of maleic acid and benzoyl peroxide contained in the modified polypropylene resin is outside the scope of the present invention, in this case it was confirmed that the impact strength is very low.
Claims (9)
3 to 15% by weight of a modified polypropylene resin comprising a graft copolymer of polypropylene resin and dicarboxylic acid and organic peroxide;
5 to 20% by weight of the glass fiber coated with the silane coupling agent; And
5-20% by weight of powdered vegetable fiber material;
0.1 to 1% by weight of styrene-ethylene-butadiene-styrene or ethylene-propylene diene monomers;
Polypropylene resin composition comprising a.
The powdery vegetable fiber material is a polypropylene resin composition is one or a mixture of two or more selected from sawdust, rice hulls, wood flour.
The dicarboxylic acid is a polypropylene resin composition which is one or a mixture of two or more selected from maleic acid, itaconic acid, citraconic acid, (C2-C10) alkenyl succinic acid and anhydrides thereof.
The organic peroxide is benzoyl peroxide, dicumyl peroxide, 2,5-dimethyl-2,5-di- (tertiary-butylperoxy) -hexyne-3, di-tertiary-butylperoxide, 1,3- Bis (tertiary-butylperoxyisopropyl) benzene, di-tertiary-butylperoxy azelate, 2,5-dimethyl-2,5-di- (tertiary-butylperoxy) -hexane, tertiary- Butyl cumyl peroxide, tert-butylperoxy-3,5,5-trimethylhexate, p-chlorobenzoyl peroxide, tert-butyloxybenzoate, methyl ethyl ketone peroxide, tris- (tertary-butyl Peroxy) triazine, tert-butyl peroxy acetate, tert-butyl peroxy isopropyl propylene polypropylene resin composition selected from the group consisting of two or more.
The glass fiber has a diameter of 10 ~ 13 ㎛, length 3 ~ 3.5 mm polypropylene resin composition.
The glass fiber is a polypropylene resin composition comprising 10 to 20% by weight of CaO, 50 to 70% by weight of SiO 2 and 2 to 15% by weight of Al 2 O 3 .
The modified polypropylene resin comprises 5 to 15 parts by weight of dicarboxylic acid and 2 to 8 parts by weight of organic peroxide based on 100 parts by weight of polypropylene resin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100065178A KR101033275B1 (en) | 2010-07-07 | 2010-07-07 | Polypropylene resin composition having wood and glass fiber |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020100065178A KR101033275B1 (en) | 2010-07-07 | 2010-07-07 | Polypropylene resin composition having wood and glass fiber |
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| KR101033275B1 true KR101033275B1 (en) | 2011-05-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382370A (en) * | 2011-10-18 | 2012-03-21 | 深圳市科聚新材料有限公司 | Polypropylene engineering plastic as well as preparation method and application thereof |
| US9175157B2 (en) | 2013-09-27 | 2015-11-03 | Hyundai Motor Company | Composition of polypropylene having improved tactility and scratch resistance and methods of use thereof |
| CN116082749A (en) * | 2022-12-29 | 2023-05-09 | 浙江普利特新材料有限公司 | Aromatic, flocking-like and soft touch modified polypropylene composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010046430A (en) * | 1999-11-12 | 2001-06-15 | 유현식 | Polyolefin Composition for Artificial Wood |
| KR20020055826A (en) * | 2000-12-29 | 2002-07-10 | 정종순 | Process for producing composite plastic board of rice husk and composition for use in this process |
| JP3605946B2 (en) | 1996-06-18 | 2004-12-22 | 三井化学株式会社 | Polyolefin-based resin composition, composite material and manufacturing method |
| KR20050037036A (en) * | 2003-10-17 | 2005-04-21 | 안계진 | Formulation materials |
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2010
- 2010-07-07 KR KR1020100065178A patent/KR101033275B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3605946B2 (en) | 1996-06-18 | 2004-12-22 | 三井化学株式会社 | Polyolefin-based resin composition, composite material and manufacturing method |
| KR20010046430A (en) * | 1999-11-12 | 2001-06-15 | 유현식 | Polyolefin Composition for Artificial Wood |
| KR20020055826A (en) * | 2000-12-29 | 2002-07-10 | 정종순 | Process for producing composite plastic board of rice husk and composition for use in this process |
| KR20050037036A (en) * | 2003-10-17 | 2005-04-21 | 안계진 | Formulation materials |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382370A (en) * | 2011-10-18 | 2012-03-21 | 深圳市科聚新材料有限公司 | Polypropylene engineering plastic as well as preparation method and application thereof |
| CN102382370B (en) * | 2011-10-18 | 2015-01-21 | 深圳市科聚新材料有限公司 | Polypropylene engineering plastic as well as preparation method and application thereof |
| US9175157B2 (en) | 2013-09-27 | 2015-11-03 | Hyundai Motor Company | Composition of polypropylene having improved tactility and scratch resistance and methods of use thereof |
| CN116082749A (en) * | 2022-12-29 | 2023-05-09 | 浙江普利特新材料有限公司 | Aromatic, flocking-like and soft touch modified polypropylene composite material and preparation method thereof |
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