KR101807095B1 - Wood Polymer composite for construction of the resin composition - Google Patents
Wood Polymer composite for construction of the resin composition Download PDFInfo
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- KR101807095B1 KR101807095B1 KR1020150130059A KR20150130059A KR101807095B1 KR 101807095 B1 KR101807095 B1 KR 101807095B1 KR 1020150130059 A KR1020150130059 A KR 1020150130059A KR 20150130059 A KR20150130059 A KR 20150130059A KR 101807095 B1 KR101807095 B1 KR 101807095B1
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
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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
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/005—Stabilisers against oxidation, heat, light, ozone
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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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3472—Five-membered rings
- C08K5/3475—Five-membered rings condensed with carbocyclic rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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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
- C08L23/12—Polypropene
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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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a synthetic wood resin composition for architectural use, and more particularly, to a woody synthetic resin composition for architectural use, which is superior in impact resistance and tensile strength as well as antioxidant performance by adding rhusi extract.
The composition of the present invention comprises 30 to 64.8 parts by weight of wood powder, 15 to 25 parts by weight of polypropylene (PP) or high density polyethylene (HDPE), 3 to 10 parts by weight of impact resistant polyvinyl chloride copolymer, 5 to 10 parts by weight of an impact modifier, 5 to 10 parts by weight of a tensile strength reinforcing agent, 5 to 10 parts by weight of Rhus wood and 2 to 3 parts by weight of a processing aid, 2.2.6.6-tetramethyl-4-piperidyl bis (2'-hydroxy-3 '-tert-butyl-5'-methylphenyl) -benzotriazole, which is an ultraviolet absorber, 5-chlorobenzotriazole in an amount of 0.1 to 0.5 parts by weight.
Description
The present invention relates to a synthetic wood resin composition for architectural use, and more particularly, to a woody synthetic resin composition for architectural use, which is superior in impact resistance and tensile strength as well as antioxidant performance by adding rhusi extract.
In general, natural wood is mainly used as an exterior material or an interior material of a building such as a floor board, a ceiling board, a door, a door frame, a window, a fence.
The reason why natural wood is mainly used for interior and exterior of a building is that the consumer's preference for wood is improved and aesthetics due to natural texture are improved.
However, the above-mentioned interior and exterior materials of buildings using natural wood are deteriorated due to deforestation of trees, vulnerability to fire, physical properties such as heat resistance, impact strength, flame retardancy and antimicrobial properties, There are difficult issues.
Particularly, the exterior material is inevitably left in the rainwater. In case of natural wood, the life time is very short due to moisture and water, and it has to be replaced frequently.
In order to solve these problems, synthetic wood containing copper, arsenic and chromium preservatives (so-called CCA preservatives) for reinforcing antimicrobial properties is widely used as interior and exterior materials for buildings.
Conventional synthetic wood is a mixture of powdered wood powder obtained by pulverizing and finely grinding fibers such as wood or rice straw, cornstalks, pulp, and wood pulp, which is a mixture of wood powder and polyvinyl chloride (PVC) resin which is a typical thermoplastic resin excellent in workability Synthetic wood compositions are mainly produced by extrusion processing in interior and exterior of buildings.
However, when the synthetic wood processed with the above-mentioned composition is installed outdoors, the commerciality of the wood is deteriorated due to the water-dispersibility and oxidation due to the material properties, and harmful substances are generated at the time of installation using the processed interior and exterior materials, , There is a problem that chlorine gas is discharged to the outside when a fire occurs and is harmful to the human body.
DISCLOSURE OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to improve the impact resistance and the tensile strength by adding polyvinyl chloride as a main component and adding a rusk extract, a light stabilizer and an ultraviolet absorber thereto, The object of the present invention is to provide a synthetic wood for a building.
In order to attain the above object, the present invention provides a method for producing a polypropylene resin composition comprising 30 to 64.8 parts by weight of wood powder, 15 to 25 parts by weight of polypropylene (PP) or high density polyethylene (HDPE) 10 parts by weight of an inorganic impact modifier, 5 to 10 parts by weight of an inorganic impact modifier, 5 to 10 parts by weight of a tensile strength reinforcing agent, 5 to 10 parts by weight of Rhus wood and 2 to 3 parts by weight of a processing aid, 2.2.6.6- (2 '- hydroxy - 3' - tert - butyl - 5 ') benzotriazole, which is an ultraviolet absorber, -methyl-phenyl) -5-chlorobenzotriazole in an amount of 0.1 to 0.5 parts by weight.
In the present invention, impact properties are improved by the impact modifier, and tensile strength improvers are not weakened by the tensile strength reinforcement, and rather, the properties are further improved.
In addition, the synthetic wood according to the present invention has an advantage of reinforcing the impact strength to the synthetic resin by the inorganic material and improving the tensile strength by the organic material.
It is believed that the synthetic wood of the present invention provides an unexpected effect that simultaneously improves the mutually conflicting physical properties without impairing the mutual mechanical properties.
In addition, it has excellent antioxidant ability by rhusin, and can be stabilized even in ultraviolet rays for a long time by being exposed to sunlight for a long time, which can greatly improve the merchantability of the product.
The synthetic wood composition according to the present invention comprises 30 to 64.8 parts by weight of wood powder, 15 to 25 parts by weight of polypropylene (PP) or high density polyethylene (HDPE), 3 to 10 parts by weight of impact resistant polyvinyl chloride copolymer 5 to 10 parts by weight of an inorganic impact reinforcing agent, 5 to 10 parts by weight of a tensile strength reinforcing agent, 5 to 10 parts by weight of rhusin, 2 to 3 parts by weight of a processing aid, 0.1 to 0.5 parts by weight of a light stabilizer, Parts by weight.
Wood flour is prepared by pulverizing natural wood, which is a selected one of broad-leaved trees, softwoods, and bamboo, to a size of 50 to 150 mesh, and then 30 to 64.8 parts by weight of the whole composition 100.
15 to 25 parts by weight of polypropylene (PP) or high density polyethylene (HDPE) is mixed with the wood and the wood and polypropylene (PP) or high density polyethylene (HDPE) are non-toxic substances. (Volatile organic compounds) and HCHO (formaldehyde), which are poisonous substances, are not generated.
And 5 to 10 parts by weight of an inorganic impact modifier based on 100 parts by weight of the total.
The inorganic impact modifier refers to sericite to be added to improve impact resistance, calcium carbonate to improve moldability and increase the volume, and pigment to impart color to synthetic resin. The inorganic impact modifier may be used in a conventional manner. When the inorganic impact modifier is used in an amount of 5 parts by weight or less, a desired function can not be sufficiently exhibited. If the inorganic impact modifier is used in an amount of 10 parts by weight or more, excessive heat of friction may be generated or the impact strength may be deteriorated.
The sericite is an inorganic impact modifier having high plasticity, drying strength, and green strength, thereby improving the impact resistance of the synthetic resin.
The above-mentioned calcium carbonate is most suitable as an extender in terms of low unit cost. The above-mentioned calcium carbonate improves the formability and reduces the abrasion of the mixing and processing apparatus, and there is no harm to the human body, and the range of adjustment of the particle size is wide, which is easy to use. In addition, the above-mentioned calcium carbonate also has a function as an inorganic impact modifier for improving impact resistance. In particular, it is known that calcium carbonate having a particle size of less than 0.1 탆 functions to disperse impact applied to the outside of a resin tube produced due to its small particle diameter to strengthen impact resistance.
As the pigment, a pigment for a synthetic resin commonly used in the technical field can be used. Since the pigment is not a special matter, a detailed description is omitted.
Further, 5 to 10 parts by weight of a tensile strength reinforcing agent is contained relative to 100 parts by weight of the whole.
The present invention further includes a tensile strength reinforcing agent which not only prevents the tensile strength from being weakened by using the organic impact modifier and inorganic impact modifier, but also further improves the tensile strength.
In the present invention, sericite and calcium carbonate powder are additionally used as an inorganic impact modifier. Such an inorganic impact modifier enhances the strength of the resin. However, since the interface between the surface of the inorganic component and the contact interface of the resin does not have a complete adhesion force, the more the inorganic impact modifier is added, The weakening of the adhesive force appears, which causes the tensile strength of the synthetic resin raw material to be weakened as a result.
The present invention relates to a gum having various functional groups in order to improve the tensile strength of the synthetic resin composition by preventing the weakening of the adhesive strength at the interface between the inorganic impact modifier and the resin, Is used as a tensile strength reinforcing agent. When the above-mentioned tensile strength reinforcing agent is used in an amount of 5 parts by weight or less, the degree of improvement of the tensile strength is small. On the other hand, when the above tensile strength reinforcing agent is used in an amount of 10 parts by weight or more,
Since the tensile strength reinforcing agent has a high molecular weight and a high functional group and has a very excellent adhesive strength, it can sufficiently reinforce the weakening of the adhesive strength between the inorganic impact modifier and the resin.
In the present invention, the tensile strength reinforcing agent is preferably a gum having a number average molecular weight of 15,000 to 50,000 g / mole, a linear cellulose structure, and various functional group groups in the branch portion thereof. Examples of the various functional groups present in the branch portion include an alkoxy group, a hydroxy group, a carboxy group, an ester group, an acetate group, an ether group and the like. And exhibits mutual bonding force between the surface of the resin and the resin.
The functional groups of the GUM can basically be explained by the fact that a strong hydrogen bond is formed between the molecules and thus a strong adhesive force and adhesive force are exhibited.
The carboxyl group (-COOH) and the acetate group (CH 3 COO-), which have good permeability, allow the inorganic impact modifier to stably bind to the synthetic resin, and the hydroxyl group (- OH), an ester group (-COO-) and an ether group (-O-) strongly bond the surface of the inorganic impact modifier to the resin.
As described above, the GUM as a tensile strength reinforcing agent exhibits both hydrogen bonding, covalent bonding, and intermolecular attraction, thereby greatly increasing the adhesion between materials. Examples of the GUM include Xanthan gum, Tara gum, Gellan gum, Arabic gum, Tragacanth gum, Guar gum, Ghatti gum and the like can be used as an example.
On the other hand, the present invention includes 5 to 10 parts by weight of Rhus verniciflua against 100 parts by weight of the whole.
Rhus javanica Linne (Rhus javanica Linne) belongs to the lacquer tree family, and is also known as the acacia tree. It is made by finely pulverizing the husked bark, or by concentrating it under reduced pressure using ethanol as an extraction solvent, The bar and the rhusi has a remarkable antioxidant effect.
Therefore, according to the test, it was found that the antioxidative effect was most excellent within the range that the tensile strength and impact strength were not inhibited when 5 to 10 parts by weight of rhusan was contained per 100 parts by weight of the polyvinyl chloride resin there was.
On the other hand, 2 to 3 parts by weight of a processing aid is included in 100 parts by weight of the total of the present invention.
The processing aid improves the processability and reduces the flow mark when the composition is extrusion-molded. As the processing aid, materials conventionally used in this technical field can be used. For example, as the processing aid, a fatty acid ester of polyol or an epoxidized soybean oil can be used as a lubricant, and other acrylic, styrene or organic arboxylic acid ester based processing aids can be used. When the processing aid is used in an amount of 2 parts by weight or less based on 100 parts by weight of the total, the flow mark or the like appears during processing at a low temperature and the workability is deteriorated. Therefore, when the amount is more than 3 parts by weight, It is difficult to obtain an effect increase, which is not preferable.
On the other hand, as a light stabilizer, 0.1 to 0.5 parts by weight of Bis (2.2.6.6 - tetramethyl - 4 piperidyl) is used for photostabilization by light of the processed product of the composition of the present invention.
The ultraviolet absorber is used in an amount of 0.1 to 0.5 parts by weight of benzotriazole type 2- (2'-hydroxy-3 '-tert-butyl-5'-methyl-phenyl) -5-chlorobenzotriazole in order to absorb ultraviolet rays by sunlight.
Therefore, the lightfastness agent and the ultraviolet absorber enhance the weatherability of the processed product processed with the composition of the present invention.
A brief description of the process for molding the interior and exterior materials for construction made of synthetic wood by these compositions is as follows.
Each of the above compositions is added to a stirrer, and the mixture is stirred for 5 to 10 minutes at a temperature of 50 to 100 ° C.
Then, the mixed composition is fed into a hopper of an extruder, and the mixture is extruded by a die in a high-temperature state with a die, extruded into a synthetic wood base material having a desired sectional shape by an extrusion method, cooled in a cooling bath, Is completed.
As described above, the stabilized state can be maintained for a long time without being deformed even in ultraviolet rays and strong sunlight while maintaining the impact resistance and excellent tensile strength according to the present invention.
In particular, the antioxidant effect is excellent.
Although the composition for synthetic wood described above has been specifically described, it should be understood that the present invention is not limited thereto, and the scope of the present invention is limited only by the scope of the appended claims. .
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the present invention.
Claims (2)
Wherein the tensile strength reinforcing agent has a number average molecular weight of 15,000 to 50,000 g / mole and has a linear cellulose structure, and the branch portion is substituted with an alkoxy group, a hydroxy group, a carboxy group, an ester group, an acetate group, And exhibiting mutual bonding force at the interface between the surface of the inorganic impact modifier and the impact resistant vinyl chloride copolymer,
(GUM) having the linear cellulose structure is used as the tensile strength enhancer, and the gum is selected from the group consisting of xanthan gum, Tara gum, Gellan gum, Characterized in that one or more of Arabic gum, Tragacanth gum, Guar gum and Ghatti gum are mixed and used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150130059A KR101807095B1 (en) | 2015-09-15 | 2015-09-15 | Wood Polymer composite for construction of the resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150130059A KR101807095B1 (en) | 2015-09-15 | 2015-09-15 | Wood Polymer composite for construction of the resin composition |
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| Publication Number | Publication Date |
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| KR20170032571A KR20170032571A (en) | 2017-03-23 |
| KR101807095B1 true KR101807095B1 (en) | 2017-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020150130059A KR101807095B1 (en) | 2015-09-15 | 2015-09-15 | Wood Polymer composite for construction of the resin composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102133562B1 (en) | 2020-02-04 | 2020-07-13 | 주식회사 남경에스텍 | composition for synthetic wood and manufacturing method of synthetic wood using the same |
| CN111363239A (en) * | 2020-03-27 | 2020-07-03 | 华南理工大学 | High-toughness high-strength wood-plastic composite material and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101214074B1 (en) | 2012-02-27 | 2012-12-20 | 백철기 | Chemical-free synthetic wood using reed and the method of manufacturing thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20100082957A (en) | 2009-01-12 | 2010-07-21 | 주식회사 임성 | Method for manufacturing synthetic wood of high strength and synthetic wood thereof |
| KR20110130147A (en) | 2010-05-27 | 2011-12-05 | (주) 파인바이오 | Composite wood manufacturing methods, and the composite wood |
| KR20130126063A (en) | 2012-05-10 | 2013-11-20 | 노향순 | Synthetic wood manufacturing method including fiber and the synthetic wood therefrom |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101214074B1 (en) | 2012-02-27 | 2012-12-20 | 백철기 | Chemical-free synthetic wood using reed and the method of manufacturing thereof |
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| KR20170032571A (en) | 2017-03-23 |
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