KR20170088615A - Manufacturing method of synthetic resins for interior components of vehicles using glass wool as reinforcement - Google Patents
Manufacturing method of synthetic resins for interior components of vehicles using glass wool as reinforcement Download PDFInfo
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- KR20170088615A KR20170088615A KR1020160008711A KR20160008711A KR20170088615A KR 20170088615 A KR20170088615 A KR 20170088615A KR 1020160008711 A KR1020160008711 A KR 1020160008711A KR 20160008711 A KR20160008711 A KR 20160008711A KR 20170088615 A KR20170088615 A KR 20170088615A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/10—Extrusion moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state
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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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
-
- 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
- C08K7/16—Solid spheres
- C08K7/18—Solid spheres inorganic
- C08K7/20—Glass
-
- 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
-
- 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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/12—Thermoplastic materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
- B29K2309/08—Glass
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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)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
A glass wool is used as a reinforcing agent to produce a resin for molding a vehicle interior part such as a console box or a map pocket. Injection molding is easy, surface appearance, shrinkage and warping are improved, (PP) and 1.5 to 2.5 parts by weight of ethylene propylene rubber (EPDM) as a reinforcing agent. The present invention relates to a method for producing a synthetic resin for a vehicle interior part using an environmentally friendly high sensitivity glass wool as a reinforcing agent, , 1.0 to 1.5 parts by weight of talc (Talc) and 0.5 to 1.0 part by weight of glass wool (S10); A second step (S20) of placing the metered raw materials in a kneader, mixing and kneading them; A third step (S30) of producing a primary pellet by extrusion-molding the kneaded raw material through the second step; And a fourth step (S40) of extruding the primary pellet together with the thermoplastic resin to complete the manufacture of the composite material.
Description
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a synthetic resin for use in the manufacture of a vehicle interior part, and more particularly, to a method of manufacturing a resin for molding a vehicle interior part such as a console box or a map pocket, using glass wool as a reinforcing agent The present invention also relates to a method for producing a synthetic resin for use in a vehicle interior part, which is excellent in surface scratch resistance, shrinkage and warpage, has excellent scratch resistance and is environmentally friendly and highly sensitive glass wool as a reinforcing agent.
Talc and glass fiber are widely used as reinforcing agents in the production of synthetic resin raw materials for molding automotive interior parts.
First, the resin raw material using talc as a reinforcing agent is made of polypropylene (PP), ethylene propylene rubber (EPDM) and talc (20%), and the resin material using the glass fiber as a reinforcing agent is polypropylene (PP), ethylene propylene rubber (EPDM), and glass fibers (20%).
However, in the case of the resin using the talc as a reinforcing agent, the resin is easily separated to the outside due to surface damage, and whitening occurs due to light reflection at the time of external exposure.
As can be seen from FIG. 6, as the content of talc increases, the scratch performance deteriorates. When the talc is easily separated by the damage of the surface due to its low bonding force with the polymer, Thereby causing a whitening phenomenon. The scratch performance is gradually lowered when 10% or more is added, and the performance is remarkably lowered when 20% or more is added.
In addition, the resin using the glass fiber as a reinforcing agent is widely used as a reinforcing agent for exterior materials and engine parts as well as internal parts of a conventional vehicle. The shrinkage characteristics depend on the orientation of the glass fiber, and the molding shrinkage ratio It is a cause that can cause bending phenomenon.
It is an object of the present invention to provide a resin for molding a vehicle interior part such as a console box or a map pocket by using a glass wool as a reinforcing agent, A shrinkage rate and a warping phenomenon are improved, a scratch resistance is excellent, and an environmentally friendly high sensitivity glass wool is used as a reinforcing agent.
In order to achieve the above object, the present invention provides a thermoplastic resin composition comprising 5.5 to 6.5 parts by weight of polypropylene (PP), 1.5 to 2.5 parts by weight of ethylene propylene rubber (EPDM), 1.0 to 1.5 parts by weight of talc, 0.5 to 1.0 part by weight of a raw material; A second step of mixing and kneading the metered raw materials into a kneader; A third step of extruding the kneaded raw material through the second step to produce a primary pellet; And a fourth step of extruding the primary pellet together with the thermoplastic resin to complete the manufacture of the composite material.
According to the present invention, in the second step, the first raw material composed of 5.5 to 6.5 parts by weight of polypropylene, 1.5 to 2.5 parts by weight of ethylene propylene rubber and 1.0 to 1.5 parts by weight of talc is introduced into a Tensen stirrer type kneader Wow; A second step of kneading and dissolving the primary raw material introduced through the first step; If the first raw material is completely dissolved through the Tensen-Shirley type kneader, the dissolved first raw material is transferred to an overlapping type kneader, and then 0.5 to 1.0 part by weight of glass wool is added to the overlapping type kneader to perform second kneading And a control unit.
According to the present invention, in the third step, the raw material kneaded and manufactured through the second step is introduced into a single screw extruder and the pellets masterbatches the glass wool are extruded.
According to another aspect of the present invention, there is provided a twin screw extruder, comprising: a first step of injecting a thermoplastic resin into a main feeder of a twin screw extruder; A second step of injecting the master-placed glass wool pellets into a side feeder of the twin screw extruder; A third step of mixing and extrusion molding the thermoplastic resin and glass wool pellets arranged in a master; And a fourth step of molding and molding the final composite material in the form of pellets through the cooling and dewatering processes of the extruded material.
As described above, since glass wool is used as a reinforcing agent in the production of a resin for molding a vehicle interior part such as a console box or a map pocket, there is no directionality of orientation, so that the problems of the conventional glass fiber are canceled and injection molding is easy, The surface appearance is improved, and the molding shrinkage and warping problems are improved.
In addition, the present invention has an advantage that the surface is excellent and therefore the moldability is excellent, and the scratch resistance is more excellent because of this feature.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram of a method for producing a synthetic resin for manufacturing a vehicle interior part using glass wool as a reinforcing agent according to the present invention;
FIG. 2 is a detailed process diagram of a mixing / kneading process according to the present invention,
3 is a detailed process diagram of a composite material extrusion process according to the present invention,
Figs. 4A and 4B are a main part structural view of a kneader applied to the present invention,
5 is a magnified comparison photograph of the surface of a resin molded product to which the glass wool reinforcing agent of the present invention is applied and a conventional product,
6 is a graph showing the content of talc and the scratch performance.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram of a method for manufacturing a synthetic resin for manufacturing a vehicle interior part using glass wool as a reinforcing agent according to the present invention.
As shown in the figure, the method for producing a synthetic resin for manufacturing a vehicle interior part using glass wool of the present invention as a reinforcing agent,
A second step (S20) of mixing and kneading the metered raw materials in a kneader; and a second step (S20) of extruding the raw materials kneaded through the second step to form a primary pellet And a fourth step (S40) of producing the composite material by extrusion-molding the primary pellet together with the thermoplastic resin.
The first step (S10) is a step of weighing a raw material. The synthetic resin primary pellet for manufacturing a vehicle interior part using glass wool according to the present invention contains 5.5 to 6.5 parts by weight of polypropylene (PP), 1.5 parts by weight of ethylene propylene rubber To 2.5 parts by weight of talc, 1.0 to 1.5 parts by weight of talc, and 0.5 to 1.0 part by weight of glass wool.
In the first step (S10) of the present invention, 5.5 to 6.5 kg of polypropylene, 1.5 to 2.5 kg of ethylene propylene rubber, 1.0 to 1.5 kg of talc and 0.5 to 1.0 kg of glass wool are weighed and prepared.
The polypropylene is a basic material for raw materials for interior parts of vehicles, and the ethylene propylene rubber serves as an impact reinforcement. The talc provides heat resistance, high rigidity, and strength improvement effect. Glass wool also plays a role of lighter weight, scratch resistance, and insulation.
Here, the glass wool to be applied as a reinforcing agent to the synthetic resin of the present invention will be described.
First, mineral fibers are classified into natural mineral fibers and artificial mineral fibers. Representative natural mineral fibers include asbestos, artificial mineral fibers include glass wool, and mineral wool.
Man-Made Mineral Fiber (MMMF) is artificially fibrousized by liquefaction of glass, rock and other minerals at high temperatures. It is used as an alternative to the use area of natural mineral fiber, asbestos.
Unlike natural fibers, it is an amorphous silicate. Representative artificial mineral fibers include glass wool and mineral wool.
The above glass wool and mineral wool are defined as safe materials completely different from those of the asbestos specified in the carcinogenic logistics.
The glass wool has an average diameter of about 5 to 10 mu m and has a diameter of 5 to 10 mu m which has no influence on the diameter. Even if it enters the respiratory tract, it is an amorphous form different from the lattice-like crystalline structure due to its physicochemical properties. It is a safe and environmentally friendly substance that is released into the body in a short period of time.
The second step (S20) is a step of mixing the metered raw materials into a kneader and mixing and kneading. The first step (S21) of feeding the primary raw materials as shown in Fig. 2 and the first step A second step (S22), and a third step (S23) in which the glass wool is dividedly added and kneaded secondarily when the first raw material is completely dissolved.
More specifically, the first step (S21) is a step of injecting a primary raw material. The primary raw material is 5.5 to 6.5 kg of polypropylene, 1.5 to 2.5 kg of ethylene propylene rubber, and 1.0 to 1.5 kg of talc, kneader.
The second step S22 is a step of kneading the charged primary raw material through a kneader, where the kneader is kneaded with a plastic material such as a solid and a small amount of liquid mixture, a rubbery material, and a high viscosity material It is the device used.
Usually, two twisted wings rotate in opposite directions to each other in a rectangular barrel like two semi-cylinders side by side. They are stretched, folded, folded, moved, kneaded and mixed.
The
The overlapping
According to the present invention, in the second step (S22), a ten-sided
In the third step (S23), when the first raw material is completely dissolved, the glass wool is dividedly injected and secondarily kneaded. The first raw material polypropylene, ethylene propylene rubber and talc are completely melted through the kneader The molten primary raw material is transferred to the overlapping
At this time, it is preferable to divide the glass wool into six sections, and the amount of glass wool to be injected at one time is about 0.83 to 0.16 kg.
As described above, according to the present invention, the reason for separating the feedstock and kneading and mixing the kneaded mixture into two types of kneaders is to optimize kneading according to the viscosity at the time of kneading the raw material.
The third step (S30) is a step of producing a primary pellet by extruding the kneaded raw material through the second step. The raw material kneaded and manufactured through the second step is introduced into a single screw extruder, One pellet is extruded.
In the fourth step (S40), the primary pellet produced through the third step is extruded together with the thermoplastic resin to complete the composite material. As shown in FIG. 4, the thermoplastic resin is applied to the main feeder of the twin screw extruder A second step (S42) of injecting the master-placed glass wool pellets into a side feeder of the twin-screw extruder, a second step (S42) of extruding the thermoplastic resin and the glass- A third step (S43), and a fourth step (S44) of molding and molding the final composite material in the form of pellets through the cooling and dewatering process of the extruded material.
The resin produced according to the composite material of the present invention thus produced is excellent in the lightening effect compared to the conventional talc reinforcement. It offers 7% weight reduction compared to existing products.
Also, it does not cause whitening when exposed to the outside, has a good surface appearance, and has excellent scratch resistance.
Since there is no directionality of orientation, injection molding is easy, shrinkage and warpage are improved, and dust is not stored in the human body as compared to talc or glass fiber.
In addition, it is an eco-friendly material because it is manufactured using 85% or more waste glass.
Fig. 6 shows a comparative photograph of the surface of a resin molded product to which the present invention glass wool reinforcing agent is applied.
As shown in the figure, the surface (a) of the composite resin molded product to which the glass wool reinforcing agent of the present invention is applied is composed of the surface (b) of the resin product to which talc (20%) is applied as a reinforcing agent and the glass fiber (C) of the applied resin product.
The scratch resistance of the resin molded product of the present invention was tested using an Erksson scratch tester (GMW14688).
The evaluation unit of this scratch test is? L (brightness value evaluation), and is a method of objectively evaluating the brightness value as well as the visual and gloss brightness using a color difference meter.
As a result of the scratch test, as shown in Table 1 below,
It was confirmed that the scratch resistance of the resin molded product using the glass wool of the present invention as the reinforcing agent was the most excellent.
In addition, evaluation of low volatile organic compounds / odors (VOCs / Odor) related to human sensitivity was performed.
As shown in Table 2 below, it was confirmed that the resin molded product using the glass wool of the present invention was higher than the product using talc as a reinforcing agent and slightly lower than the resin molded product using glass fiber as a reinforcing agent.
Claims (4)
A second step (S20) of placing the metered raw materials in a kneader, mixing and kneading them;
A third step (S30) of producing a primary pellet by extrusion-molding the kneaded raw material through the second step; And
And a fourth step (S40) of extruding the primary pellet together with the thermoplastic resin to complete a composite material (S40). The method of manufacturing a synthetic resin for a vehicle interior part using the glass wool as a reinforcing agent.
In the second step S20, the first raw material composed of 5.5 to 6.5 parts by weight of polypropylene, 1.5 to 2.5 parts by weight of ethylene-propylene rubber, and 1.0 to 1.5 parts by weight of talc is introduced into a ten-sided type kneader 10 S21);
A second step (S22) of kneading and dissolving the primary raw material introduced through the first step; And
When the primary raw material is completely dissolved through the Tensen's type kneader 10, the dissolved primary raw material is transferred to the overlapping type kneader 20, and 0.5 to 1.0 part by weight of glass wool is added to the overlapping type kneader 20 And a second step (S23) of kneading the glass wool with the glass wool.
The third step (S30) is a step of injecting the raw material kneaded and manufactured through the second step into a single screw extruder, and extruding the pellets in which the glass wool is master-disposed. The synthetic resin ≪ / RTI >
The fourth step (S40) includes a first step (S41) of injecting a thermoplastic resin into the main feeder of the twin screw extruder;
A second step (S42) of injecting the master-placed glass wool pellets into a side feeder of the twin screw extruder;
A third step (S43) of mixing and extruding the thermoplastic resin and the glass wool pellets arranged in the master; And
And a fourth step (S44) of molding and molding the final composite material in the form of pellets through the cooling and dewatering processes of the extruded material. The method of manufacturing a synthetic resin for a vehicle interior part using the glass wool as a reinforcing agent.
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KR1020160008711A KR101779693B1 (en) | 2016-01-25 | 2016-01-25 | Manufacturing method of synthetic resins for plastic components of vehicles using glass wool as reinforcement |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190073122A (en) * | 2017-12-18 | 2019-06-26 | 현대자동차주식회사 | Polypropylene complex resin composition having excellent scratch-resistance and mechanical properties |
CN110964261A (en) * | 2019-12-19 | 2020-04-07 | 天津金发新材料有限公司 | Scratch-resistant, low-odor and low-gloss polypropylene glass wool modified material and preparation method thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2009007179A (en) | 2007-06-26 | 2009-01-15 | Nippon Electric Glass Co Ltd | Sizing agent for glass fiber, glass fiber, method of manufacturing glass fiber and glass fiber-reinforced thermoplastic resin |
JP5416620B2 (en) | 2010-03-08 | 2014-02-12 | マグ・イゾベール株式会社 | Composite molding material |
JP5220934B1 (en) | 2012-04-10 | 2013-06-26 | マグ・イゾベール株式会社 | Composite-forming material, surface-treated short glass fiber, and method for producing composite-forming material |
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2016
- 2016-01-25 KR KR1020160008711A patent/KR101779693B1/en active IP Right Grant
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190073122A (en) * | 2017-12-18 | 2019-06-26 | 현대자동차주식회사 | Polypropylene complex resin composition having excellent scratch-resistance and mechanical properties |
CN109971108A (en) * | 2017-12-18 | 2019-07-05 | 现代自动车株式会社 | Polypropylene composite materials resin combination with excellent scratch resistance and mechanical property |
CN110964261A (en) * | 2019-12-19 | 2020-04-07 | 天津金发新材料有限公司 | Scratch-resistant, low-odor and low-gloss polypropylene glass wool modified material and preparation method thereof |
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