CN111844673A - Application method of high-strength propylene elastomer applied to TPV (thermoplastic vulcanizate) automobile instrument panel - Google Patents
Application method of high-strength propylene elastomer applied to TPV (thermoplastic vulcanizate) automobile instrument panel Download PDFInfo
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- CN111844673A CN111844673A CN202010653585.2A CN202010653585A CN111844673A CN 111844673 A CN111844673 A CN 111844673A CN 202010653585 A CN202010653585 A CN 202010653585A CN 111844673 A CN111844673 A CN 111844673A
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- tpv
- propylene elastomer
- instrument panel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/3008—Instrument panels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
The invention relates to the technical field of propylene elastomers, and discloses a method for using a high-strength propylene elastomer applied to a TPV (thermoplastic vulcanizate) automobile instrument panel, wherein a certain amount of high-strength propylene elastomer can be added into a preformed TPV to increase the volume of a soft phase (rubber phase) so as to improve the mechanical property, the propylene is colorless and slightly sweet gas at normal temperature, has molecular weight of 42.08, liquid density of 0.5139g/cm3(20/4 ℃), gas density of 1.905(0 ℃, 101325Pa.abs) freezing point of-185.3 ℃, boiling point of-47.4 ℃, has slight anesthesia, is completely decomposed at 815 ℃ and 101.325kpa, is inflammable, has explosion limit of 2-11 percent, is insoluble in water, is soluble in an organic solvent, belongs to a low-toxicity substance, and is a basic raw material of three large synthetic materials, the thickness gauge is mainly used for producing polypropylene, acrylonitrile, isopropanol, acetone, propylene oxide and the like, and the thickness gauge is used for measuring the thickness of a material or the thickness of a covering layer on the surface of the material.
Description
Technical Field
The invention relates to the technical field of propylene elastomers, in particular to a use method of a high-strength propylene elastomer applied to a TPV (thermoplastic vulcanizate) automobile instrument panel.
Background
The automobile instrument board can be divided into two types according to the structural types
1. A hard structure. The hard structure is mainly used for trucks and buses, generally does not need a skin material, and adopts direct injection molding. The hard instrument board is made of PPO, ABS/PC alloy and modified PP materials. Recently developed gas-assisted injection molding method using a single injection port can overcome the formation of surface shrinkage and weld marks, and improve the rigidity of the product
2. A soft structure. Is mainly used for cars and is formed by compounding a surface skin, a framework and a Polyurethane (PU) foaming body buffer material. The skin material is conventionally used PU, PUR, PVC, ABS/PVC alloy, etc. The main new material is thermoplastic polyolefin TPV/TPO, in order to adapt to the trend of light weight and environmental protection of automobile parts and improve the recycling performance and comfort of interior materials, thermoplastic polyolefin elastomer TPV/TPO becomes the development direction of automobile instrument panel skins and is favored by people. The conventional PVC skin material is gradually replaced by a polyolefin thermoplastic elastomer TPV/TPO because TPV/TPO and PP are compatible and easily recycled. For the sake of recycling, thermoplastic polyolefin skin TPV/TPO, modified polypropylene skeleton, and instrument panel made of polypropylene foam material are being developed.
TPV is formed by dynamically vulcanizing PP/EPDM, and the TPV has the following performance problems:
1) poor mechanical properties:
it has been found that the size of the rubber particles in the TPV elastomer has an influence on the tensile strength and the maximum elongation, the tensile strength and the elongation at break are inversely proportional to the diameter of the rubber particles, and the smaller the diameter of the rubber particles, the better the mechanical properties. In the dynamic vulcanization method, since the dispersed phase rubber particles are generated by mechanical shearing, the particle diameter of the obtained rubber cannot be made small.
2) Poor fluidity:
some inorganic fillers may be added to reduce cost or improve performance in some way. The addition of the filler can improve the hardness, the definite elongation and the medium-resistant stability of the TPV, and simultaneously reduce the elongation and the thermoplastic flowability.
Disclosure of Invention
Technical problem to be solved
The invention mainly solves the technical problems in the prior art and provides a method for using a high-strength propylene elastomer applied to a TPV automobile instrument panel.
(II) technical scheme
In order to achieve the purpose, the invention adopts the following technical scheme, and the application method of the high-strength propylene elastomer applied to the TPV automobile instrument panel is characterized by comprising the following steps:
1) Drying, proportioning and mixing the raw materials, and feeding the raw materials through a vacuum hopper;
2) extruding the material by equipment, and filtering the semi-finished product at the extruded part by a filter screen;
3) treating the filtered product through a die head, and carrying out tape casting cooling on the semi-finished product;
4) then, sequentially carrying out thickness gauge corona treatment, swing amplitude and all-edge traction on the finished product;
5) flattening the finished product to remove static electricity;
6) and finally, rolling the finished product.
In order to improve the processing fluidity of the TPV and reduce the hardness of the material, a certain amount of high-strength propylene elastomer can be added into the preformed TPV to increase the volume of a soft phase (rubber phase) so as to improve the mechanical property.
The propylene is colorless and slightly sweet gas at normal temperature, has molecular weight of 42.08, liquid density of 0.5139g/cm3(20/4 ℃), gas density of 1.905(0 ℃, 101325Pa.abs), freezing point of-185.3 ℃ and boiling point of-47.4 ℃, is slightly anesthetic, is completely decomposed at 815 ℃ and 101.325kpa, is inflammable, has explosion limit of 2-11 percent, is insoluble in water, is soluble in an organic solvent, belongs to a low-toxicity substance, is a basic raw material of three synthetic materials, and is mainly used for producing polypropylene, acrylonitrile, isopropanol, acetone, propylene oxide and the like.
Preferably, the thickness gauge is used for measuring the thickness of the material or the thickness of a covering layer on the surface of the material, the uniformity of each point and the corrosion and abrasion degree of the material, and sometimes the thickness of the covering layer on the surface of the material is measured to ensure the quality of products and the production safety.
Preferably, the corona treatment is an electric shock treatment, which provides higher adhesion to the surface of the printing material, most plastic films (such as hydrocarbon films) are nonpolar polymers, and known inks and adhesives with low surface tension cannot be firmly adhered to the plastic films, so that the surface of the plastic films is subjected to a corona treatment, chemical bonds of the plastic molecules are broken to degrade the plastic films, the surface roughness and the surface area are increased, a large amount of ozone is generated during discharge, the ozone is a strong oxidant, the plastic molecules are oxidized, and groups with stronger polarity such as carbonyl groups and peroxides are generated, so that the surface energy of the plastic films is improved.
Preferably, the high-strength propylene elastomer resin is innovatively used in the TPV automobile skin, and the high-strength propylene elastomer is an ethylene-propylene-butylene copolymer, and propylene is used as a main chain special structure, so that the strength of the TPV automobile skin is improved.
Preferably, the TPV, fully referred to as a thermoplastic vulcanizate, consists essentially of two parts, one plastic as the continuous phase and the other rubber as the dispersed phase, usually with softening oils or plasticizers, vulcanizing agents and auxiliary agents being necessary, and inorganic fillers being added to reduce costs or to improve certain properties.
Preferably, there are 3 methods for preparing the TPV, i.e., a melt blending method, a solution blending method, and a latex blending method, wherein the melt blending method is the most common method, and there are mainly 2 apparatuses used, and a mixer or a twin-screw extruder, and depending on the process, one apparatus may be used alone or 2 apparatuses may be used, and industrially, since the twin-screw extruder can be continuously produced, the twin-screw extruder becomes the most common dynamic vulcanization apparatus in view of quality stability.
Advantageous effects
The invention provides a use method of a high-strength propylene elastomer applied to a TPV automobile instrument panel. The method has the following beneficial effects:
(1) the use method of the high-strength propylene elastomer applied to the TPV automobile instrument panel is characterized in that the special high-strength propylene elastomer resin is innovatively used in the TPV automobile skin, the high-strength propylene elastomer is an ethylene-propylene-butylene copolymer, and propylene is used as a main chain special structure, so that the strength of the TPV automobile skin is improved.
(2) The application method of the high-strength propylene elastomer applied to the TPV automobile instrument panel improves the forming processability of the TPV automobile surface skin based on the rheological property of the high-strength propylene elastomer resin.
(3) The application method of the high-strength propylene elastomer applied to the TPV automobile instrument panel can obviously improve the strength of the TPV automobile surface skin, so that the service life of the TPV automobile surface skin is prolonged.
(4) The application method of the high-strength propylene elastomer applied to the TPV automobile instrument panel improves the processing flow property of the TPV automobile surface, reduces other processing defects in post processing and improves the yield.
Drawings
FIG. 1 is a production flow chart of the present invention.
The specific implementation mode is as follows:
the technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
The use method of the high-strength propylene elastomer applied to the TPV automobile instrument panel is characterized by comprising the following steps:
1) drying, proportioning and mixing the raw materials, and feeding the raw materials through a vacuum hopper;
2) extruding the material by equipment, and filtering the semi-finished product at the extruded part by a filter screen;
3) treating the filtered product through a die head, and carrying out tape casting cooling on the semi-finished product;
4) Then, sequentially carrying out thickness gauge corona treatment, swing amplitude and all-edge traction on the finished product;
5) flattening the finished product to remove static electricity;
6) and finally, rolling the finished product.
In order to improve the processing fluidity of the TPV and reduce the hardness of the material, a certain amount of high-strength propylene elastomer can be added into the preformed TPV to increase the volume of a soft phase (rubber phase) so as to improve the mechanical property.
The propylene is colorless and slightly sweet gas at normal temperature, has molecular weight of 42.08, liquid density of 0.5139g/cm3(20/4 ℃), gas density of 1.905(0 ℃, 101325Pa.abs), freezing point of-185.3 ℃ and boiling point of-47.4 ℃, is slightly anesthetic, is completely decomposed at 815 ℃ and 101.325kpa, is inflammable, has explosion limit of 2-11 percent, is insoluble in water, is soluble in an organic solvent, belongs to a low-toxicity substance, is a basic raw material of three synthetic materials, and is mainly used for producing polypropylene, acrylonitrile, isopropanol, acetone, propylene oxide and the like.
The thickness gauge is used for measuring the thickness of a material or the thickness of a covering layer on the surface of the material, the uniformity of each point and the corrosion and abrasion degree of the material, and sometimes the thickness of the covering layer on the surface of the material is measured to ensure the quality and the production safety of products.
The corona treatment is an electric shock treatment, which enables the surface of a printing stock to have higher adhesiveness, most plastic films (such as hydrocarbon polymer films) belong to nonpolar polymers, known ink and adhesive with lower surface tension cannot be firmly adhered on the surfaces, so the surfaces of the plastic films are subjected to corona treatment, chemical bonds of plastic molecules are broken and degraded, the surface roughness and the surface area are increased, a large amount of ozone is also generated during discharge, the ozone is a strong oxidant, the plastic molecules can be oxidized, and groups with stronger polarity, such as carbonyl and peroxide, are generated, so the surface energy of the plastic films is improved.
The high-strength propylene elastomer resin is innovatively used in the TPV automobile skin, and is based on the fact that the high-strength propylene elastomer is an ethylene-propylene-butylene copolymer, and propylene is used as a main chain special structure, so that the strength of the TPV automobile skin is improved.
The TPV is fully called thermoplastic vulcanized rubber, and mainly comprises two parts, namely plastic serving as a continuous phase and rubber serving as a dispersed phase, wherein the rubber is usually required to be matched with softening oil or plasticizer, vulcanizing agent and some auxiliary agents are also indispensable, and in addition, some inorganic fillers are added for reducing cost or improving performance in some aspect.
The preparation method of the TPV is generally 3, namely a melt blending method, a solution blending method and a latex blending method, wherein the melt blending method is the most common, the adopted equipment mainly comprises 2 mixing machines or twin-screw extruders, one equipment can be used independently or 2 equipment can be used according to different processes, and in the industry, the twin-screw extruder can be used for continuous production, so the twin-screw extruder becomes the most common dynamic vulcanization equipment in consideration of stable quality.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The use method of the high-strength propylene elastomer applied to the TPV automobile instrument panel is characterized by comprising the following steps:
1) Drying, proportioning and mixing the raw materials, and feeding the raw materials through a vacuum hopper;
2) extruding the material by equipment, and filtering the semi-finished product at the extruded part by a filter screen;
3) treating the filtered product through a die head, and carrying out tape casting cooling on the semi-finished product;
4) then, sequentially carrying out thickness gauge corona treatment, swing amplitude and all-edge traction on the finished product;
5) flattening the finished product to remove static electricity;
6) and finally, rolling the finished product.
2. The use method of the high strength propylene elastomer applied to TPV automobile instrument panel according to claim 1, characterized in that: in order to improve the processing fluidity of the TPV and reduce the hardness of the material, a certain amount of high-strength propylene elastomer can be added into the preformed TPV to increase the volume of a soft phase (rubber phase) so as to improve the mechanical property.
3. The use method of the high strength propylene elastomer applied to TPV automobile instrument panel according to claim 1, characterized in that: the propylene is colorless and slightly sweet gas at normal temperature, has molecular weight of 42.08, liquid density of 0.5139g/cm3(20/4 ℃), gas density of 1.905(0 ℃, 101325Pa.abs), freezing point of-185.3 ℃ and boiling point of-47.4 ℃, is slightly anesthetic, is completely decomposed at 815 ℃ and 101.325kpa, is inflammable, has explosion limit of 2-11 percent, is insoluble in water, is soluble in an organic solvent, belongs to a low-toxicity substance, is a basic raw material of three synthetic materials, and is mainly used for producing polypropylene, acrylonitrile, isopropanol, acetone, propylene oxide and the like.
4. The use method of the high strength propylene elastomer applied to TPV automobile instrument panel according to claim 1, characterized in that: the thickness gauge is used for measuring the thickness of a material or the thickness of a covering layer on the surface of the material, the uniformity of each point and the corrosion and abrasion degree of the material, and sometimes the thickness of the covering layer on the surface of the material is measured to ensure the quality and the production safety of products.
5. The use method of the high strength propylene elastomer applied to TPV automobile instrument panel according to claim 1, characterized in that: the corona treatment is an electric shock treatment, which enables the surface of a printing stock to have higher adhesiveness, most plastic films (such as hydrocarbon polymer films) belong to nonpolar polymers, known ink and adhesive with lower surface tension cannot be firmly adhered on the surfaces, so the surfaces of the plastic films are subjected to corona treatment, chemical bonds of plastic molecules are broken and degraded, the surface roughness and the surface area are increased, a large amount of ozone is also generated during discharge, the ozone is a strong oxidant, the plastic molecules can be oxidized, and groups with stronger polarity, such as carbonyl and peroxide, are generated, so the surface energy of the plastic films is improved.
6. The use method of the high strength propylene elastomer applied to TPV automobile instrument panel according to claim 1, characterized in that: the high-strength propylene elastomer resin is innovatively used in the TPV automobile skin, and is based on the fact that the high-strength propylene elastomer is an ethylene-propylene-butylene copolymer, and propylene is used as a main chain special structure, so that the strength of the TPV automobile skin is improved.
7. The use method of the high strength propylene elastomer applied to TPV automobile instrument panel according to claim 1, characterized in that: the TPV is fully called thermoplastic vulcanized rubber, and mainly comprises two parts, namely plastic serving as a continuous phase and rubber serving as a dispersed phase, wherein the rubber is usually required to be matched with softening oil or plasticizer, vulcanizing agent and some auxiliary agents are also indispensable, and in addition, some inorganic fillers are added for reducing cost or improving performance in some aspect.
8. The use method of the high-strength propylene elastomer applied to the TPV automobile instrument panel as claimed in claim 7, wherein: the preparation method of the TPV is generally 3, namely a melt blending method, a solution blending method and a latex blending method, wherein the melt blending method is the most common, the adopted equipment mainly comprises 2 mixing machines or twin-screw extruders, one equipment can be used independently or 2 equipment can be used according to different processes, and in the industry, the twin-screw extruder can be used for continuous production, so the twin-screw extruder becomes the most common dynamic vulcanization equipment in consideration of stable quality.
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| CN202010653585.2A CN111844673A (en) | 2020-07-08 | 2020-07-08 | Application method of high-strength propylene elastomer applied to TPV (thermoplastic vulcanizate) automobile instrument panel |
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| CN202010653585.2A CN111844673A (en) | 2020-07-08 | 2020-07-08 | Application method of high-strength propylene elastomer applied to TPV (thermoplastic vulcanizate) automobile instrument panel |
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| CN102015877A (en) * | 2008-04-23 | 2011-04-13 | 埃克森美孚化学专利公司 | Propylene copolymers in soft thermoplastic blends |
| CN103012952A (en) * | 2012-10-10 | 2013-04-03 | 天津金发新材料有限公司 | Polypropylene thermoplastic elastomer for automobile safety airbag cover board and preparation method thereof |
| CN103403086A (en) * | 2010-12-30 | 2013-11-20 | 陶氏环球技术有限责任公司 | Thermoplastic vulcanizate composition, method of producing the same, and articles made therefrom |
| CN104109330A (en) * | 2014-07-04 | 2014-10-22 | 浙江俊尔新材料股份有限公司 | Polypropylene composite material as well as preparation method and application thereof |
| CN104592628A (en) * | 2014-12-22 | 2015-05-06 | 上海普利特复合材料股份有限公司 | High-toughness high-rigidity modified polypropylene material and preparation method thereof |
| CN102757597B (en) * | 2011-04-27 | 2016-01-20 | 合肥杰事杰新材料股份有限公司 | A kind of high-strength and high ductility low odor polypropylene composition and method of making the same and purposes |
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-
2020
- 2020-07-08 CN CN202010653585.2A patent/CN111844673A/en active Pending
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| CN102015877A (en) * | 2008-04-23 | 2011-04-13 | 埃克森美孚化学专利公司 | Propylene copolymers in soft thermoplastic blends |
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Effective date of registration: 20220207 Address after: 201600 area F, building 1, 120 Rongjiang Road, Songjiang District, Shanghai Applicant after: Shanghai ruizefeng Standard Technical Service Co.,Ltd. Address before: Room 505, no.26349 Yushu street, Songjiang District, Shanghai Applicant before: Shanghai Yexin Material Technology Co.,Ltd. |
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Application publication date: 20201030 |