KR101062899B1 - Thermoplastic resin compostion and processing method use of natural fabric - Google Patents

Abstract

The present invention relates to a thermoplastic resin composition using natural fibers for improving the odor and volatile organic compounds of odors and volatile organic compounds (VOC) and formaldehyde (HCHO) of automobile or building materials, landscape materials. As related;
With respect to 100% by weight of the primary composition of the present invention,
As a main component, 20 to 65% by weight of natural fiber which is hemp or cactus fiber,
30 to 65% by weight of a thermoplastic resin whose heat distortion temperature is 90 ° C. or higher, polyethylene terephthalate (PET) or acrylonitrile butadiene styrene copolymer (ABS), polystyrene (PS) resin;
2.8 to 9% by weight of maleic anhydride-modified polypropylene as a compatibilizer for increasing the binding force of the natural fiber,
2 to 5% by weight of lubricant Vermiculite, for kneading and lubricating the blend during extrusion or molding,
A primary composition is composed of 0.05 to 0.4% by weight of heat stabilizer, 0.05 to 0.2% by weight of antioxidant, and 0.1 to 0.4% by weight of carbon-black, which is a pigment;
Per 100 parts by weight of the primary composition,
Magnesium oxide (MgO) or calcium oxide (CaO), aluminum oxide (Al2O3) 4.0, metal salts for contact with moisture and conversion to alkalis to reduce odors and volatile organic compounds (VOC) and formaldehyde (HCHO) concentrations To 10 parts by weight,
For adsorption of odor particles and imparting far infrared rays, heating at a heating temperature of 900 to 1100 ° C. and a pore size of 0.1 to 0.5 μm It is a very useful invention regarding a thermoplastic resin composition using natural fibers having improved odors and volatile organic compounds, in which bamboo charcoal or powdered bamboo charcoal or ganban stone, activated carbon, and zeolite are added in an amount of 1.0 to 10 parts by weight. .

Description

Thermoplastic Resin Compostion and Processing Method using Natural Fibers with Improved Odor and Volatile Organic Compounds

The present invention relates to a thermoplastic resin composition using natural fibers for improving odor and volatile organic compounds, which are used for reducing odors and volatile organic compounds (VOC) and formaldehyde (HCHO) of automobile or building materials and landscape materials. To a processing method thereof;

With respect to 100% by weight of the primary composition of the present invention,

20 to 65% by weight of natural fibers that are hemp or cactus fibers,

30 to 65% by weight of thermoplastic resin having a heat distortion temperature of 90 ° C. or higher, polyethylene terephthalate (P.E.T) or acrylonitrile butadiene styrene copolymer (A.B.S), polystyrene (P.S) resin;

2.8 to 9% by weight of maleic anhydride-modified polypropylene as a compatibilizer for increasing the binding force of the natural fiber,

2 to 5% by weight of lubricant Vermiculite, for kneading and lubricating the blend during extrusion or molding,

A primary composition is composed of 0.05 to 0.4% by weight of heat stabilizer, 0.05 to 0.2% by weight of antioxidant, and 0.1 to 0.4% by weight of carbon-black, which is a pigment;

Per 100 parts by weight of the primary composition,

) 4.0 내지 10중량부와,Magnesium oxide (MgO), calcium oxide (CaO), and aluminum oxide (metal oxides) used in contact with moisture and converted to alkaline to reduce odor and volatile organic compounds (VOC) and formaldehyde (HCHO) concentrations.

4.0 to 10 parts by weight,

For the adsorption of odor particles and the provision of far infrared rays, the adsorption, heating and heating pore size of 900 to 1100 ° C. The present invention relates to a thermoplastic resin composition using natural fibers having improved odor and volatile organic compounds, in which bamboo charcoal is pulverized, powdered bamboo charcoal or ganban stone, activated carbon, and zeolite 1.0 to 10 parts by weight;

In particular, by processing a thermoplastic material composition using a natural fiber of the composition of the present invention, a car material or a building material, landscaping material to a material processed with a composition using a natural fiber used as a vehicle material or building material of the prior art, landscaping material In comparison,

Odor of automobile or building materials, landscaping materials, and volatile organic compounds (VO

C), the concentration of formaldehyde (HCHO) is markedly lowered, while being environmentally friendly;

Far-infrared rays are generated in the automobile material or the building material, the landscaping material processed by the composition of the present invention, the health of the human body is improved, scrap recycling is easy, and the productivity is improved and the cost is reduced;

The odor and volatile organic compounds of the composition which enhance the stiffness of tensile strength and flexural strength and flexural modulus of automobile or building materials, which are processed products processed at an heating temperature of 220 ° C. in an extruder or a molding machine with the composition of the present invention. The present invention relates to a thermoplastic resin composition using the improved natural fiber and a processing method thereof.

Automotive materials or construction materials, landscaping materials processed with thermoplastic resin compositions using natural fibers of the prior art,

Natural fiber crushing chip which is pulverized natural fiber such as wood or bamboo, hemp, cactus fiber (Sisal) which is harmless to human body as the main ingredient, polypropylene (PP) or good processability poly for strengthening the properties of tensile strength, flexural strength and flexural modulus Extrusion or molding process of thermoplastic resin composition kneaded with thermoplastic resin of vinyl chloride (PVC) is commonly used to manufacture automobile materials, construction materials, and landscape materials, which are processed products.

By the heating temperature of the extruder or molding machine for melting the synthetic resin, which is a thermoplastic resin during extrusion or molding processing the thermoplastic resin composition containing the natural fiber as a processed product, to the natural fiber such as wood or bamboo, hemp, cactus fibers as the main material By breaking down the main components of cellulose and lignin,

Automotive materials or building materials, landscaping materials processed with a thermoplastic resin composition using natural fibers odors are difficult to use, and

Harmful to the human body due to the generation of volatile organic compounds VOC and formaldehyde (HCHO);

With the above problems, it has been an obstacle to the expanded application of automobile materials or building materials, landscape materials, processed with thermoplastic resin composition using natural fibers;

In addition, when the thermoplastic resin is composed of polyvinyl chloride (PVC) resin, chlorine gas, which is a toxic gas, is generated when a fire occurs, which causes a fatal problem to the human body and a problem of discoloration of the processed product due to deterioration of weather resistance. to be.

In particular, regulations on volatile organic compounds (VOCs) harmful to humans occurring in new cars (new cars) or new homes are being expanded worldwide, and without improvement, automobile materials, building materials, and landscape materials of thermoplastic resin compositions using natural fibers are not improved. It is difficult to apply it continuously.

Accordingly, the odor and volatile organic compounds of automobile or building materials, landscaping materials processed into thermoplastic resin compositions using natural fibers, which have been solved by using the thermoplastic resin compositions using natural fibers, but have solved the above-mentioned problems of the prior art.

There is an urgent need to develop a thermoplastic resin composition using natural fibers having improved odor and volatile organic compounds and a method for processing the same, wherein the concentration of (VOC) and formaldehyde (HCHO) is reduced.

Compared to automobile materials or building materials, landscaping materials processed with the thermoplastic resin composition containing the natural fibers of the prior art;

The odor of automobile materials or building materials processed by the thermoplastic resin composition containing the natural fiber of the present invention, landscaping materials, and the concentration of volatile organic compounds (VOC) and formaldehyde (HCHO) are significantly reduced and environmentally friendly,

Far infrared rays are generated in the processed product processed with the composition of the present invention to improve the health of the human body,

The stiffness of tensile strength, flexural strength and flexural modulus of the processed product processed with the composition of the present invention is enhanced, and workability is improved and cost is reduced by weight reduction;

By the processing method of the present invention, carbonization of the processed product is prevented, scrap recycling and productivity are improved, and manufacturing cost is further reduced; It is an object of the present invention and the technical problem to be achieved by the present invention to provide a thermoplastic resin composition and a processing method thereof using natural fibers of the structure, odor and volatile organic compounds are improved.

The above-mentioned problem is solved by "the thermoplastic resin composition using the natural fiber which improves an odor and a volatile organic compound, and its processing method" of the structure of this invention.

By solving the above-mentioned problems of the prior art, "the thermoplastic resin composition using natural fibers with improved smell and volatile organic compounds" of the present composition;

Compared to automobile materials, construction materials and landscaping materials processed with thermoplastic resin compositions containing natural fibers of the prior art,

The odor of automobile materials or building materials processed by the thermoplastic resin composition containing the natural fiber of the present invention, landscaping materials, the concentration of volatile organic compounds (VOC), formaldehyde (HCHO) is significantly lowered, and environmentally friendly effects and ;

Far infrared rays are generated in the processed product processed with the composition of the present invention to enhance the health of the human body;

Tensile strength, flexural strength, and flexural modulus of stiffness of the processed product processed with the composition of the present invention are enhanced, and workability and cost are reduced by weight reduction;

By the processing method of the present invention, the carbonization of the processed product is prevented to improve scrap recycling and productivity, and further reduce the manufacturing cost;

Due to the light weight of automobile materials, it is a very useful invention that also brings the fuel saving effect of automobiles.

In general, automotive materials in the form of trunk liner seats or molded articles, building materials that are artificial wood or interior and exterior materials for construction, landscape materials for landscaping;

As a main component, a thermoplastic resin composition containing natural fiber composed of wood fiber, which is a natural fiber that is harmless to human body, is kneaded with polypropylene resin, which is a thermoplastic resin for enhancing the physical properties of tensile strength, flexural strength and flexural modulus. Although a method of manufacturing an automobile material, a building material, or a landscaping material by processing in an extruder or a molding machine is generally used,

When the thermoplastic resin composition containing the natural fiber is extruded or molded into a processed product, the wood, which is natural fiber, is contained in the wood powder pulverized or cut by a heating temperature of an extruder or a molding machine for melting the synthetic resin, which is a thermoplastic resin. Pyrolysis of the main components cellulose and lignin,

Odor generation of automobile materials, construction materials, and landscape materials processed with thermoplastic resin compositions using natural fibers has been a cause of generation of volatile organic compounds (VOC) and formaldehyde (HCHO).

In addition, the odor may be caused by the residual monomer of polypropylene, which is a thermoplastic resin, and the thermoplastic resin by thermal decomposition of polypropylene, and the thermal decomposition of wood powder, which is a natural fiber mentioned above. The main factor is the thermal decomposition of wood flour, a natural fiber.

Cellulose Pyrolysis Diagram

As shown in the cellulose pyrolysis scheme of wood flour, the main component of wood flour is composed of cellulose (Cellulose), hemicellulose (Lemicellulose), lignin (Lignin), and has an unstable reducing end group at the end, in the presence of water When heated, the thermal decomposition is promoted to generate a lot of unstable reducing end groups, which generates a large amount of volatile gas, which causes odor generation and large amounts of volatile organic compounds (VOC) and formaldehyde (HCHO).

In addition, wood flour is composed of porous cell structure, which is difficult to dry and absorbs moisture in the air even when dried, and has a moisture content of 10 to 15%. Odor generation and volatile organic compounds (VOC) and form Difficult to dry to a moisture content of 4% or less, which is an appropriate moisture content for the improvement of aldehyde (HCHO),

Due to the low flowability of wood powder when extruded or molded from extruder or molding machine to processed products, the thermal decomposition of wood powder is lowered when the heating temperature of extruder or molding machine is heated to less than 220 ℃, and volatile organic compounds (VOC) and formaldehyde which are harmful gases (HCHO) Occurrence and odor concentration decrease, but it is difficult to lower the heating temperature of the extruder or the molding machine because the wood powder does not flow smoothly into the composition at the heating temperature of less than 220 ℃, resulting in a product defect rate due to unmelting in the composition. ,

When the heating temperature of the extruder or molding machine is heated to a temperature exceeding 260 ° C., the wood powder is smoothly flowed by the high heat and melted in the composition, but the thermal decomposition is promoted by the high temperature heating, and the volatile organic compound (VOC), which is a noxious gas, Since it causes a large amount of formaldehyde (HCHO) and odor generation, there is a difficulty in raising the heating temperature of the extruder or molding machine.

Configuration diagram according to the present invention composition

Therefore, the present invention is due to the above-mentioned matters, and as described in the configuration diagram of the present invention,

When the composition of the present invention is extruded or formed into a processed product from an extruder or a molding machine, natural fibers flow smoothly to heat at a temperature within a heating temperature of 220 ° C. of the extruder or the molding machine, thereby lowering melting and pyrolysis in the composition. It is composed of a thermoplastic resin composition using natural fibers having improved composition of VOC and formaldehyde (HCHO) and lowering of odor concentration and odor and volatile organic compounds.

Hereinafter, a thermoplastic resin composition using natural fibers in which the odor and volatile organic compounds of the present invention are improved will be described.

Thermoplastic resin composition using natural fibers to improve the smell and volatile organic compounds of the present invention;

With respect to 100% by weight of the primary composition,

20 to 65% by weight of natural fibers, which are hemp or cactus fibers in powder or chips (CHIP) ground or cut to a particle size of 0.1 to 10 mm,

30 to 65% by weight of thermoplastic resin having a heat distortion temperature of 90 ° C. or higher, polyethylene terephthalate (P.E.T) or acrylonitrile butadiene styrene copolymer (A.B.S), polystyrene (P.S) resin;

2.8 to 9% by weight of maleic anhydride-modified polypropylene as a compatibilizer for increasing the binding force of the natural fiber,

2 to 5% by weight of lubricant Vermiculite, for kneading and lubricating the blend during extrusion or molding,

0.05 to 0.4% by weight of calcium stearate (Ca-st) as a heat stabilizer, 0.05 to 0.2% by weight of phenol, phosphorus antioxidant as an antioxidant, and 0.1 to 0.4% by weight of carbon-black as a pigment. A secondary composition is formed;

Per 100 parts by weight of the primary composition,

) 4.0 내지 10중량부와,Magnesium oxide (MgO) or calcium oxide (CaO), aluminum oxide (metal salt) for contact with moisture and conversion to alkalinity to reduce odor and volatile organic compounds (VOC) and formaldehyde (HCHO) concentrations

4.0 to 10 parts by weight,

Adsorption of odor particles and application of far-infrared, heating and pore size of 0.1-0.5 μm at a heating temperature of 900-1100 ° C. Powdered bamboo charcoal or crushed bamboo charcoal, ganban stone, activated carbon, zeolite, a thermoplastic resin composition using natural fibers having improved odor and volatile organic compounds of the present invention is added.

The natural fiber is 20 to 65% by weight of natural fibers in a powder or chip (CHIP) in which hemp or cactus fibers are ground or cut to a particle size of 0.1 to 10mm,

The thermoplastic resin has a heat distortion temperature of more than 90 ℃ powdery polyethylene terephthalate (PET) or acrylonitrile butadiene styrene copolymer (ABS), polystyrene (PS) resin 30 to 65% by weight 30 to 65% by weight of polyethylene terephthalate (PET) resin is preferably used;

The compatibilizer is a polypropylene (PP) grafted to have a powdery functional group for use in which the bonding force between natural fibers and thermoplastic resin is increased, and the terminal functional group has a hydroxyl group, an amino group, or a carboxyl group. Maleic anhydride modified polypropylene (brand name: CM-1120 manufacturer: Honam Petrochemical, brand name: KH-845-4 manufacturer: Asontech Corporation, product name:

SILQUEST-A-151 manufactured by Dury Kay C.) is used in an amount of 2.8 to 9% by weight. Preferably, the product name is CM-1120 manufactured by Honam Petrochemical.

It is preferable to use 2.8 to 9% by weight of 1120;

The lubricant is used 2-5% by weight of Vermiculite powder for the purpose of kneading and lubrication of the compound in the extrusion or molding process of the present invention,

As an additive, 0.05 to 0.4% by weight of powdered calcium stearate (Ca-st), which is a thermal stabilizer for thermal stability, and a powdered phenol and phosphorus antioxidant (mixed name: BB 021 manufacturer: Asian additives) 0.05 to 0.2% by weight is used,

As the pigment, 0.1 to 0.4% by weight of powdery carbon black is used,

A primary composition is formed;

Per 100 parts by weight of the primary composition,

) 4 내지 10중량부가 첨가되며, 바람직하게는 산화마그네슘(MgO) 4.0 내지 10중량부가 첨가되며,
Powdered magnesium oxide (MgO), calcium oxide (CaO), aluminum oxide (metal salt) for use in the conversion of alkalis on contact with moisture to reduce odors and concentrations of volatile organic compounds (VOC) and formaldehyde (HCHO).

) 4 to 10 parts by weight is added, preferably 4.0 to 10 parts by weight of magnesium oxide (MgO) is added,

1.0 to 10 parts by weight of powdery bamboo charcoal or ganban stone, activated carbon and zeolite, which are adsorption and far infrared granting agents, for adsorbing odor particles and imparting far infrared rays, are added, and are preferably heated at a high temperature of 900 to 1100 ° C. to increase pore size. Is 0.1 to 0.5 µm Bamboo charcoal 1.0 to 10 parts by weight is added;

The final composition of the present invention, a thermoplastic resin composition using natural fibers to improve the smell and volatile organic compounds is prepared.

With the same composition as above;

While the high rigidity of the tensile strength, flexural strength, flexural modulus of the trunk liner sheet or molded article processed with the composition of the present invention, artificial wood or building materials for interior and exterior materials, landscaping materials for landscaping use is required, It is a composition to meet products requiring improvement of odor, volatile organic compound (VOC) and formaldehyde (HCHO).

Using natural fibers as fillers, while natural fibers are easily kneaded with thermoplastic polyethylene terephthalate or acrylonitrile butadiene, styrene copolymers and polystyrene resins;

Polypropylene grafted to have one functional group as a compatibilizer

As the maleic anhydride-modified polypropylene having a structure in which the terminal functional group has a hydroxyl group, an amino group, and a carboxyl group, a bonding force is increased between the natural fiber and the thermoplastic resin;

The metal salt absorbs the moisture contained in the natural fiber and the primary composition, and reduces the moisture so that the composition of the present invention, including the natural fiber due to a decrease in water content, becomes a hydroxide, and the alkali is contained in the composition. By converting to alkaline, the acidic natural fiber of PH 5.5 to neutrality of PH 7.0, the thermal decomposition is suppressed during heating for extrusion and molding processing,

→

→

→

→

By the metal salt, the acidic natural fiber of PH 5.5 contained in the composition is neutralized to PH 7.0 when heated in an extruder or a molding machine for extrusion or molding in the present invention, and during heating for extrusion and molding Pyrolysis of natural fiber is suppressed,

Odor generation and volatile organic compounds (VOC) and formaldehyde (HCHO) generation of automotive or building materials, landscaping materials which are processed products of the present invention are significantly reduced;

As a lubricant, vermiculite, which is a mineral belonging to a monoclinic system having a crystalline structure such as mica, is used, and the composition of the present invention is expanded by heating vermiculite at a high temperature of 900 to 1200 ° C. to have a thin laminated structure, and slip between layers of the composition occurs. By lubricating in the molten state of the composition of the present invention, it is possible to extrude the composition even at a low temperature, which further reduces the odor, volatile organic compounds, and formaldehyde generation of automobile or building materials, landscape materials, which are processed products of the present invention. In composition,

Due to the low flowability of natural fibers, it is difficult to lower the extrusion or molding temperature exceeding 260 ° C. to within 220 ° C. in which pyrolysis is suppressed. The process of within 220 ° C. by lubricating vermiculite using the active vermiculite of the present invention Melt extrusion or melt molding of natural fibers is possible even at temperature,

The composition can be melt-extruded or melt-molded even at a low temperature of less than 220 ° C., so that pyrolysis of natural fibers is suppressed, and the odor and volatile organic compounds (VOC) of automobile or building materials, landscape materials, which are processed products of the present invention, Formaldehyde (HCHO) generation is further lowered;

In addition, the bamboo charcoal as the adsorption, far infrared imparting agent used for adsorption of the odor particles and impart far infrared rays,

Wood charcoal, which is a general activated carbon, has a large pore size and unevenness, so that the adsorbed small odor particles and the odor particles are released again when the temperature is increased. Silver pore size is more uniform than wood charcoal, large charcoal is heated at a high temperature of 900 to 1100 ℃ pore size is 0.1 to 0.5㎛, small pore size and powdered bamboo charcoal crushed uniform large charcoal is used. The function of bamboo charcoal is as follows.

-The function of bamboo charcoal

1) Smell deodorization rate: 100ppm before using hydrogen sulfide / 1 hour after use: 3.5ppm (96% reduction)

2) Electromagnetic Shielding Rate:

Bamboo Charcoal 600 ℃ Manufacture: Shielding Effect (DB) 0 ~ 5 / 68.4%

Bamboo Charcoal 800 ℃ Manufacture: Shielding Effect (DB) 10 ~ 37 / 90.0 ~ 99.9%

Bamboo Charcoal 1,000 ℃ Manufacturing: Shielding Effect (DB) 50 ~ 70 / 99.99%

 3) Far infrared radiation rate:

Bamboo Charcoal:

Emissivity (5 ~ 20㎛) 0.93 / emission energy (W / ㎡ · ㎛) at temperature 40 ℃ 3.74 × 10²

Charcoal:

Emissivity (5 ~ 20㎛) 0.93 / emission energy (W / m² · ㎛) at temperature 50 ℃ 3.62∼3.83 × 10²

By the bamboo charcoal of the above function, the property that the odor particles are adsorbed into the pores of the bamboo charcoal to be released to the outside is remarkably prevented, the concentration of the odor due to the adsorption of the odor is further reduced, the far-infrared radiation substance Emitted to produce far-infrared effect as well;

Thermoplastic using natural fibers that improve the tensile strength, flexural strength, and flexural modulus of the processed product processed with the present composition, and improve the workability and cost by reducing the weight and weight, and improve volatile organic compounds. It consists of a resin composition.

Hereinafter, a processing method of the thermoplastic resin composition using natural fibers in which the odor and volatile organic compounds of the present invention are improved will be described.

The processing method of the thermoplastic resin composition using the natural fiber to improve the smell and volatile organic compounds of the present invention is composed of the processing method of step S1 to S3.

Step S1: Generation of Primary Composition

With respect to 100% by weight of the primary composition,

20 to 65% by weight of natural fibers, which are ground or chipped hemp or cactus fibers, ground or cut to a particle size of 0.1 to 10 mm,

30 to 65 wt% of a thermoplastic polyethylene terephthalate (P.E.T) or acrylonitrile butadiene styrene copolymer (A.B.S), a polystyrene (P.S) resin having a heat distortion temperature of 90 ° C. or more;

2.8 to 9% by weight of powdered maleic anhydride modified polypropylene as a compatibilizer for increasing the binding force of the natural fiber,

2 to 5% by weight of lubricating powdered vermiculite, for kneading and lubricating the blend during extrusion or molding,

0.05 to 0.4% by weight of powdered calcium stearate (Ca-st), which is a thermal stabilizer, 0.05 to 0.2% by weight of powdered phenol, phosphorus antioxidant, which is an antioxidant, and 0.1 to 0.1% by weight of powdered carbon black, which is a pigment 0.4 wt% is added to each blender and kneaded to produce a primary composition

S2 step: metal salt and adsorption to primary composition, far infrared imparting agent is added, and final composition is produced

Per 100 parts by weight of the primary composition,

) 4.0 내지 10중량부와,Powdered magnesium oxide (MgO) or calcium oxide (CaO), aluminum oxide (metal salt) that is converted to alkalis in contact with moisture to reduce the odor and concentration of volatile organic compounds (VOC) and formaldehyde (HCHO)

4.0 to 10 parts by weight,

Adsorption of odor particles and application of far-infrared, heating and pore size of 0.1-0.5 μm at a heating temperature of 900-1100 ° C. Bamboo charcoal pulverized powdered bamboo charcoal or ganban stone, activated carbon, zeolite 1.0 to 10 parts by weight is added and kneaded to produce a final composition

S3 stage: processing into a processed product at a temperature within 220 ℃ in an extruder or molding machine

The final composition of the step S2 is put into an extruder or a molding machine, processed into a processed product within the extrusion or molding temperature 220 ℃, the processing step of the processed product in which the natural fiber is smoothly melted by heat and the thermal decomposition of the natural fiber is reduced

By the processing method of the step S1 to S3;

When extruding or molding the final composition produced in the step S1 and the step S2 from the extruder or the molding machine to the processed product, the natural fiber is smoothly flowed to the heat and the pyrolysis is reduced at the heating temperature of the extruder or the molding machine within 220 ° C. A processing method in which generation of volatile organic compounds (VOC) and formaldehyde (HCHO), which are harmful gases, and concentration of odors are reduced;

When the composition using the natural fiber of the prior art is extruded or molded into a processed product, carbonization of the processed product is also prevented by heating at a high temperature exceeding 260 ° C. for melting of wood powder, thereby facilitating scrap recycling, and a defective rate of the processed product. Of the processing method is prevented to improve the productivity and further reduce the manufacturing cost;

It consists of a method of processing a thermoplastic resin composition using natural fibers to improve the smell and volatile organic compounds.

In addition, if necessary, the processing method of the configuration of the present invention,

Primary injection of the primary composition produced in the step S1 into an extruder or a molding machine;

) 4.0 내지 10중량부와,Powdered magnesium oxide (MgO) or calcium oxide (CaO) or aluminum oxide (MgO), which is a metal salt, based on 100 parts by weight of the primary composition

4.0 to 10 parts by weight,

Adsorption, heating at 900 ~ 1100 ℃, which is far infrared imparting agent, and pore size 0.1 ~ 0.5㎛ Powdery crushed bamboo charcoal Bamboo charcoal or ganban stone, activated carbon, zeolite 1.0 to 10 parts by weight of the second is added; Processed into processed products within an extrusion or molding temperature of 220 ° C .; It may be composed of a method for processing a thermoplastic resin composition using natural fibers to improve the smell and volatile organic compounds.

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

In addition, the following embodiments are only for explaining the preferred embodiment of the present invention, the present invention is not limited by the embodiments.

Example 1 is a well-known kneading and extrusion manufacturing method (however, the heating temperature of the extruder is heated to 220 ℃) in which the primary composition of the composition ratio as shown in Table 1 to produce an extruded sheet which is a material for manufacturing automotive interior parts Manufactured extruded sheet having a thickness of 2.0 mm, which is a material for manufacturing automotive interior parts;

In Example 2, the final composition of the present invention to which 7.5 parts by weight of the metal salt as shown in [Table 2] and 3.5 parts by weight of the adsorption and far infrared stimulating agent were added to 100 parts by weight of the primary composition having the same composition ratio as in [Table 1], An extrusion sheet having a thickness of 2.0 mm, which is a material for manufacturing automotive interior parts, manufactured by a known kneading and extrusion manufacturing method for manufacturing an extrusion sheet, which is a material for manufacturing automobile interior parts (heating temperature of an extruder, is heated to 220 ° C.) ;

Comparative Example is a material for manufacturing automotive interior parts in the market, which is manufactured by the same production method as Example 1 and 2 (except the heating temperature of the extruder manufactured at 260 ° C.) at the composition ratio shown in [Table 3]. As extruded sheet having a thickness of 2.0 mm;

The analysis results of the main physical properties of Examples 1 and 2 and Comparative Examples are shown in [Table 4], and the test standards and test methods of odor, volatile organic compounds and formaldehyde are shown in [Table 5] and [Table 6]. .

                                                                 Unit: weight% ingredient Primary composition (Example 1) Remarks Polypropylene 43.8 General Homo PP Natural fiber 44.8 Wood powder Compatibilizer 5.0 Maleic anhydride modified P.P Lubricant 6.0 Vermiculite Heat stabilizer 0.2 Calcium Stearate (CaSt) Antioxidant 0.1 BB021 Pigment 0.1 Carbon black

                                                                  Unit: parts by weight ingredient Example 2 Remarks Primary composition 100 Primary composition of Example 1 Metal salt 7.5 Magnesium Oxide (MgO) Adsorption, Far Infrared Radiant 3.5 Large charcoal

                                                                   Unit: weight% ingredient Comparative example Remarks Polypropylene 48.8 General Homo PP Natural fiber 44.8 Wood powder Lubricant 6.0 Talc Heat stabilizer 0.2 Calcium Stearate (CaSt) Antioxidant 0.1 BB021 Pigment 0.1 Carbon black

Example 1

Thermoplastic: 43.8 wt% polypropylene, natural fiber: 44.8 wt% wood flour, compatibilizer: 5.0 wt% maleic anhydride modified PP, lubricant: 6.0 wt% vermiculite, heat stabilizer: 0.2 wt% calcium stearate, antioxidant Name: BB-021 0.1 wt%, Pigment: The primary composition of the present invention kneaded with 0.1 wt% of carbon black is extruded at an extrusion temperature of 220 ° C., which is a material for manufacturing automotive interior parts. It was made of an extruded sheet having a thickness of 2.0 mm.

[Example 2]

7.5 parts by weight of magnesium oxide, which is a metal salt, and 3.5 parts by weight of large charcoal, which is an adsorbing and far infrared imparting agent, were added and kneaded to 100 parts by weight of the first composition having the same composition as in Example 1, and the mixture was kneaded at an extrusion temperature of 220 ° C. in an extruder. Extruded from to prepare a 2.0 mm thick extruded sheet material for automobile interior parts.

[Comparative Example]

Thermoplastic: 48.8 wt% polypropylene, natural fiber: 44.8 wt% wood flour, lubricant: 6.0 wt% tark, heat stabilizer: 0.2 wt% calcium stearate, antioxidant: 0.2 wt% BB-021, pigment: carbon The composition kneaded with 0.1% by weight of black was extruded at an extrusion temperature of 260 ° C. in an extruder to prepare an extruded sheet having a thickness of 2.0 mm, which is a material for manufacturing automotive interior parts.

Properties Test Methods unit Example 1 Example 2 Comparative example The tensile strength ASTM D638 Kgf / ㎠ Longitudinal direction 261 269 219 Transverse 208 215 165 Flexural strength ASTM D790 Kgf / ㎠ Longitudinal direction 562 558 447 Transverse 455 457 350 Flexural modulus ASTM D790 Kgf / ㎠ Longitudinal direction 38,890 38,430 31,400 Transverse 30,870 29,340 22,820 importance ASTM D792 g / cm 3 1.13 1.15 1.11 smell MS 300-34 ppm / grade 947/4 class 173/3 rating 2876/6 rating Benzene MS 300-55 ㎍ / ㎥ 23 / pass 9.5 / pass 34 / reject Toluene MS 300-55 ㎍ / ㎥ 982 / pass 424 / pass 1254 / fail Ethylbenzene MS 300-55 ㎍ / ㎥ 845 / pass 328 / pass 1720 / Fail Xylene MS 300-55 ㎍ / ㎥ 580 / pass 95 / pass 790 / pass Styrene MS 300-55 ㎍ / ㎥ 149 / pass 55 / pass 276 / pass Formaldehyde MS 300-55 ㎍ / ㎥ 327 / fail 115 / pass 745 / fail

-MS is a Hyundai Motor Standard

Odor intensity Concentration (ppm) Dilution amount (ml / L) Grade 1 0 0 Grade 2 Less than 100 0.10 Grade 3 Less than 400 0.40 Grade 4 Less than 1500 1.50 Grade 5 Less than 7000 7.00 Grade 6 Less than 30000 30.00

-Odor test method (Hyundai Motor Standard MS 300-34)

Evenly apply distilled water corresponding to 10% of the weight of the test piece. The test piece was placed in a 4 liter desiccator and sealed, and left in a laboratory at 23 ± 2 ° C. for 1 hour.

Open the lid of desiccator about 3 ~ 4 ㎝ and evaluate it on the evaluation paper according to the odor evaluation procedure. Odor evaluators require at least one person and can be evaluated up to three times with one test vessel.

Hard plastics that hardly absorb water can be excluded from the test, and boards such as head liners and door trims, and various pads and foams that are expected to increase moisture due to moisture absorption are tested.

Kinds Release amount (㎍ / ㎥) Benzene Less than 30 Toluene Less than 1,000 Ethylbenzene Less than 1,600 Xylene Less than 870 Styrene Less than 300 Formaldehyde Less than 250

-Test method of VOC (Hyundai Motor Standard MS 300-34)

1) Perform a blank test of TD-GC / MSD to confirm in advance that there are no pollutants generated in the analysis system.

2) Heat and desorb the sampled adsorption tube at 280 ℃. During heating, the temperature of the low temperature condensation tube should be kept at least -30 ℃ or less. As soon as the heating and desorption is completed, the low temperature condensation tube is heated up as soon as possible.

3) GC / MS analysis should be performed at the same time as the two-stage thermal desorption of the cold condenser.

-Test method of formaldehyde (HCHO) (Hyundai Motor Standard MS 300-55)

1) Inject 5 mL Acetonitrile into the sampled DNPH cartridge to elute the adsorbed aldehydes / ketones. All glassware used to prevent sample contamination should be washed with Acetonitrile and dried.

2) Put 1.5 mL of the eluate into a 2 mL vial, mount it on the autosampler of HPLC, and analyze it referring to the following conditions. As far as the equivalent conditions can be provided, the analysis conditions can be changed.

Extruded sheet of the composition and processed product of the present invention embodiment

Extruded sheet as a composition and processed product of Comparative Example

As can be seen in the above table, in the case of an extruded sheet having a thickness of 2.0 mm, which is a material for manufacturing automobile interior parts produced by the same manufacturing process, the extruded sheet processed with the present compositions of Examples 1 and 2 has the same thickness as compared to the comparative example. It was found that the stiffness values of tensile strength, flexural strength and flexural modulus were 1.2 to 1.5 times or more, which made it possible to reduce the weight of the product and improve the workability and cost;

In addition, the composition of Examples 1 and 2 is heated at a heating temperature of 220 ° C. in an extruder or a molding machine, and wood powder is melted, thereby preventing carbonization of processed products, thereby improving scrap recycling and productivity, and further reducing manufacturing costs. Proved to be;

In particular, the extruded sheet processed into the final composition of the present invention of Example 2, the odor and the concentration of volatile organic compounds (VOC) and formaldehyde (HCHO) is significantly lowered, environmentally friendly and far-infrared radiation is generated to improve the health of the human body Proved to be;

Extruded sheet processed with the primary composition of Example 1 was found to increase the concentration of odor compared to Example 2, formaldehyde was not met the reference value;

Extruded sheet processed with the composition of the comparative example was found to have a problem that the stiffness of tensile strength, flexural strength, flexural modulus is significantly lowered compared to Examples 1 and 2,

In addition, the odor concentration is six grades, causing bad smell and volatile organic compounds

Benzene, toluene, ethylbenzene, and formaldehyde (HCHO), which are (VOC), were found to have a problem in use due to the generation and rejection of a large amount outside the standard value.

Claims (6)

Thermoplastic resin composition using natural fibers to improve the smell and volatile organic compounds;
With respect to 100% by weight of the primary composition,
20 to 65% by weight of natural fibers, which are ground or chipped hemp or cactus fibers, ground or cut to a particle size of 0.1 to 10 mm,
30 to 65% by weight of a thermoplastic terephthalate or a polyethylene terephthalate or acrylonitrile butadiene styrene copolymer having a heat deflection temperature of 90 ° C. or higher;
2.8 to 9% by weight of maleic anhydride-modified polypropylene as a compatibilizer for increasing the binding force of the natural fiber,
2 to 5% by weight of lubricant vermiculite for kneading and lubricating the compound during extrusion or molding,
A primary composition is composed of 0.05 to 0.4% by weight of calcium stearate as a heat stabilizer, 0.05 to 0.2% by weight of phenol and phosphorus antioxidant as an antioxidant, and 0.1 to 0.4% by weight of carbon black as a pigment;
Per 100 parts by weight of the primary composition,
4.0 to 10 parts by weight of magnesium oxide or calcium oxide, aluminum oxide, which is a metal salt, for use in contact with moisture and being converted to alkaline;
Adsorption of odor particles and application of far-infrared, heating and pore size of 0.1-0.5 μm at a heating temperature of 900-1100 ° C. Bamboo charcoal pulverized powdered bamboo charcoal or ganban stone, activated carbon, zeolite 1.0 to 10 parts by weight is added, characterized in that the composition, thermoplastic resin composition using natural fibers to improve the odor and volatile organic compounds. delete The method of claim 1, wherein the thermoplastic resin or compatibilizer, lubricant, thermal stabilizer, antioxidant, pigment, metal salt, adsorption, far infrared imparting agent, respectively, characterized in that the composition of the powder, natural odor and volatile organic compounds are improved Thermoplastic composition using fibers. delete Thermoplastic resin composition using natural fibers to improve the smell and volatile organic compounds;
Relative to 100% by weight of the total composition,
20 to 65% by weight of natural fibers, which are ground or chipped hemp or cactus fibers, ground or cut to a particle size of 0.1 to 10 mm,
30 to 65% by weight of a thermoplastic terephthalate or a polyethylene terephthalate or acrylonitrile butadiene styrene copolymer having a heat deflection temperature of 90 ° C. or higher;
2.8 to 9% by weight of maleic anhydride-modified polypropylene as a compatibilizer for increasing the binding force of the natural fiber,
2 to 5% by weight of lubricant vermiculite for kneading and lubricating the compound during extrusion or molding,
Odor and volatile organic compounds, characterized in that the composition is composed of 0.05 to 0.4% by weight of calcium stearate as a heat stabilizer, 0.05 to 0.2% by weight of phenol, phosphorus antioxidant, and 0.1 to 0.4% by weight of carbon black as a pigment. Thermoplastic resin composition using the improved natural fiber. Processing method of the thermoplastic resin composition using natural fibers, processing method of the thermoplastic resin composition using natural fibers to improve the odor and volatile organic compounds, characterized in that processed in steps S1 to S3

Step S1: Generation of Primary Composition
With respect to 100% by weight of the primary composition,
20 to 65% by weight of natural fibers, which are ground or chipped hemp or cactus fibers, ground or cut to a particle size of 0.1 to 10 mm,
30 to 65% by weight of a thermoplastic polyethylene terephthalate or acrylonitrile butadiene styrene copolymer, polystyrene resin having a heat deformation temperature of 90 ° C. or more;
2.8 to 9% by weight of powdered maleic anhydride modified polypropylene as a compatibilizer for increasing the binding force of the natural fiber,
2 to 5% by weight of lubricating powdery vermiculite for kneading and lubricating the blend during extrusion or molding,
0.05 to 0.4 wt% of powdered calcium stearate as a heat stabilizer, 0.05 to 0.2 wt% of powdered phenol and phosphorus antioxidant as an antioxidant, and 0.1 to 0.4 wt% of powdered carbon black as a pigment are added to the blender and kneaded, respectively. To produce a primary composition

S2 step: metal salt and adsorption to primary composition, far infrared imparting agent is added, and final composition is produced
Per 100 parts by weight of the primary composition,
4.0 to 10 parts by weight of powdered magnesium oxide or calcium oxide, aluminum oxide, which is a metal salt which is converted into alkali, in contact with water, for reducing the concentration of odor and volatile organic compounds and formaldehyde,
Adsorption of odor particles and application of far-infrared, heating and pore size of 0.1-0.5 μm at a heating temperature of 900-1100 ° C. Bamboo charcoal pulverized powdered bamboo charcoal or ganban stone, activated carbon, zeolite 1.0 to 10 parts by weight is added and kneaded to produce a final composition

S3 stage: processing into a processed product at a temperature within 220 ℃ in an extruder or molding machine
The final composition of the step S2 is put into an extruder or a molding machine, processed into a processed product within the extrusion or molding temperature 220 ℃, the processing step of the processed product in which the wood powder, which is a natural fiber smoothly melts in heat and the thermal decomposition of wood powder is reduced