CN112961430A - Low-odor polypropylene and preparation method thereof - Google Patents
Low-odor polypropylene and preparation method thereof Download PDFInfo
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- CN112961430A CN112961430A CN202110140675.6A CN202110140675A CN112961430A CN 112961430 A CN112961430 A CN 112961430A CN 202110140675 A CN202110140675 A CN 202110140675A CN 112961430 A CN112961430 A CN 112961430A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
- C08L23/14—Copolymers of propene
Abstract
The invention discloses low-odor polypropylene and a preparation method thereof, belonging to the technical field of automobile materials and comprising the following raw materials in parts by weight: polypropylene: 70-80 parts of toughening material: 5-15 parts of reinforcing master batch: 10-20 parts of antioxidant: 0.4-1.0 part of light stabilizer: 0.2-0.6 part of lubricant: 0.2-0.6 part; the invention utilizes the adsorption effect of mesoporous material opal powder, adds the opal powder into the talcum powder master batch, combines the process of vacuum extraction of odor molecules, and simultaneously screens and compares the added components to obtain the components with lower volatile content on the market.
Description
Technical Field
The invention belongs to the technical field of automobile materials, and particularly relates to low-odor polypropylene and a preparation method thereof.
Background
With the requirements of national regulations and the attention of consumers to the health of the interior of the automobile in recent years, the quality of air in the automobile is always concerned by the automobile industry. Non-metal materials in the automotive interior are main factors influencing the quality of air in the automobile, and the performance of controlling the odor and VOC of the materials becomes a key. The polypropylene material is used in the largest amount in the interior materials of the finished automobile, for example, a certain automobile type, the polypropylene material accounts for about 20% of the non-metal materials of the finished automobile, and the polypropylene in the interior is used in about 25kg, which accounts for the highest ratio. The odor and VOC performance of the polypropylene material are the key influencing factors of the air quality in the whole vehicle.
At present, PP materials used for vehicle interior trims are mostly produced in a traditional mode, the odor and VOC (volatile organic compounds) of the materials cannot be fundamentally improved, and the mode of baking raw material particles and products is adopted, so that double pressure of cycle and cost is brought. Suppliers of raw materials and parts are urgently seeking solutions. The talcum powder master batch has the effect of enhancing the modified PP material, the addition amount is 5-30%, and the talcum powder master batch accounts for a large proportion, and is a key factor influencing the smell and VOC (volatile organic compounds) of the interior PP material. The talcum powder master batch has larger smell, but the production environment is easy to cause dust pollution by simply adding the talcum powder. It is therefore essential to improve the odor and VOC of the talc powder masterbatch.
In order to improve the odor and VOC requirements of automobile materials, various material manufacturers have management requirements from various components, and PP for automobiles is modified by modified material manufacturers, such as increasing toughening and reinforcing materials. The talcum powder is added in two forms, one is powder adding, and the other is prepared into talcum powder master batch for adding. Each addition has advantages and disadvantages. The powder is added, so that dust pollution is easily caused to the production environment; the talc powder is added in the form of master batch, so that the processing technology can be improved, but the master batch has a large smell, and the smell of the PP material for vehicles is influenced finally.
At present, the odor inhibitor or the adsorbent is added for improvement, the odor inhibitor is composed of clay, zeolite and metal oxide, the used odor inhibitor is a microporous material, the specific surface area of the microporous material is large, the surface activity is high, and the adsorbed water cannot be removed at the temperature of the PP material drying material. The addition inhibitor is reactive organic salt, porous silicate and the like, and has no obvious interference effect on the odor and VOC performance.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides low-odor polypropylene and a preparation method thereof, the invention utilizes the adsorption effect of mesoporous material opal powder, adds the mesoporous material opal powder into talcum powder master batches, combines a process of vacuum extraction of odor molecules, and simultaneously screens and compares the added components to obtain the components with lower volatile content on the market.
The invention is realized by the following technical scheme:
the low-odor polypropylene comprises the following raw materials in parts by weight:
polypropylene: 70-80 parts of,
Toughening materials: 5-15 parts of,
Reinforcing master batch: 10-20 parts of,
Antioxidant: 0.4 to 1.0 portion of,
Light stabilizer: 0.2 to 0.6 portion of,
Lubricant: 0.2 to 0.6 portion.
Preferably, the reinforced master batch is prepared from the following raw materials in parts by weight:
carrier: 15-25 parts of,
Talc powder: 25 to 55 portions of,
Opal shale: 25 to 55 portions of,
Antioxidant: 0.1 to 0.2 portion of,
Lubricant: 0.2 to 0.6 portion.
Preferably, the carrier is PP, and the preferred production process is Spherizone process or Spheripol process.
Preferably, the mesh number of the talcum powder is 1000-3000, and the silicon content is more than 60 percent; the mesh number of the opal shale is 1000-3000; the weight part ratio of the talcum powder to the opal shale is 1: 1.
preferably, the polypropylene is one of homopolymerization and copolymerization or mixed in any ratio, and the production process is a Spherizone process or a Spheripol process.
Preferably, the toughening material is ethylene-octene copolymer (POE);
the antioxidant is formed by mixing a main antioxidant and an auxiliary antioxidant in a weight ratio of 1:2, wherein the main antioxidant and the auxiliary antioxidant are at least one of phenols, amines, phosphites, semi-hindered phenols or acryloyl functional groups; if the main antioxidant is one or the mixture of basf 1010 or 1076 in any ratio, preferably 1076; secondary antioxidant basf 168.
The light stabilizer is one of hindered amine light stabilizers.
The lubricant is zinc or calcium stearate, EBS, stearic acid or paraffin.
The invention also aims to provide a preparation method of the low-odor reinforced master batch, which comprises the following specific steps:
1. weighing the raw materials according to the weight ratio; the weight portions of the raw materials are as follows:
polypropylene: 70-80 parts of,
Toughening materials: 5-15 parts of,
Reinforcing master batch: 10-20 parts of,
Antioxidant: 0.4 to 1.0 portion of,
Light stabilizer: 0.2 to 0.6 portion of,
Lubricant: 0.2-0.6 part;
2. putting the mixed raw materials into a double-screw extruder for melting, mixing, extruding, cooling and granulating, wherein the rotating speed of a screw is 300-500 r/min, and the temperature is 180-220 ℃ according to different regions; meanwhile, a double vacuum device is adopted for vacuum pumping treatment, and the vacuum degree is 0.07-0.12 MPa.
Preferably, the preparation method of the reinforced master batch comprises the following specific steps:
(1) weighing the raw materials according to the weight ratio; the weight portions of the raw materials are as follows:
carrier: 15-25 parts of,
Talc powder: 25 to 55 portions of,
Opal shale: 25 to 55 portions of,
Antioxidant: 0.1 to 0.2 portion of,
Lubricant: 0.2 to 0.6 portion.
(2) Mixing the carrier, the talcum powder, the opal shale, the antioxidant and the lubricant in a mixing roll or an internal mixer at the temperature of 110-130 ℃;
(3) putting the mixed raw materials into a double-screw extruder for extruding, cooling and granulating, wherein the rotating speed of a screw is 180-160 r/min, and the temperature is 180-220 ℃ according to different areas; meanwhile, a vacuum device is adopted for vacuum pumping treatment, and the vacuum degree is 0.07-0.12 MPa.
Compared with the prior art, the invention has the following advantages:
according to the invention, the opal shale with the function of mesoporous odor adsorption is added at the same time to prepare the talcum powder and opal shale master batch as the polypropylene filling material, so that the odor and VOC of the material can be reduced under the condition of keeping the strength performance of the polypropylene enhanced by the full-talc powder.
Detailed Description
The following embodiments are merely examples for illustrating the technical solutions of the present invention more clearly, and therefore, the following embodiments are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Comparative example 1
The production process comprises the following steps: the mixed raw materials are put into a double-screw extruder for melt mixing, extrusion, cooling and granulation, the rotating speed of the screws is 300 to 500 revolutions per minute, and the temperature is 180 to 220 ℃ according to different areas. No vacuum treatment is used.
Examples
The invention provides low-odor polypropylene which is prepared from the following raw materials in parts by weight:
polypropylene: 70-80 parts of,
Toughening materials: 5-15 parts of,
Reinforcing master batch: 10-20 parts of,
Antioxidant: 0.4 to 1.0 portion of,
Light stabilizer: 0.2 to 0.6 portion of,
Lubricant: 0.2 to 0.6 portion.
The reinforced master batch is prepared from the following raw materials in parts by weight:
carrier: 15-25 parts of,
Talc powder: 25 to 55 portions of,
Opal shale: 25 to 55 portions of,
Antioxidant: 0.1 to 0.2 portion of,
Lubricant: 0.2 to 0.6 portion.
The carrier is PP, and the preferred production process is Spherizone process and Spheripol process.
The mesh number of the talcum powder is 1000-3000, and the silicon content is more than 60 percent; the mesh number of the opal shale is 1000-3000; the weight part ratio of the talcum powder to the opal shale is 1: 1.
the polypropylene is one of homopolymerization and copolymerization or mixed in any ratio, and the production process is a Spherizone process or a Spheripol process.
The toughening material is ethylene-octene copolymer (POE);
the antioxidant is formed by mixing a main antioxidant and an auxiliary antioxidant in a weight ratio of 1:2, wherein the main antioxidant and the auxiliary antioxidant are at least one of phenols, amines, phosphites, semi-hindered phenols or acryloyl functional groups; if the main antioxidant is one or the mixture of basf 1010 or 1076 in any ratio, preferably 1076; secondary antioxidant basf 168.
The light stabilizer is one of hindered amine light stabilizers
The lubricant is zinc or calcium stearate, EBS, stearic acid or paraffin.
Example 1 to example 7
Putting the mixed raw materials into a double-screw extruder for melting, mixing, extruding, cooling and granulating, wherein the rotating speed of a screw is 300-500 r/min, and the temperature is 180-220 ℃ according to different regions; meanwhile, a double vacuum device is adopted for vacuum pumping treatment, and the vacuum degree is 0.07-0.12 MPa.
Wherein, the formulation ratio of the reinforcing master batch is shown in Table 1, and the preparation formulation ratio of the low-odor polypropylene is shown in Table 2.
TABLE 1 ratio of ingredients of the formulation of the reinforcing masterbatch
TABLE 2 Polypropylene formulation ingredient ratios
Performance testing
The pellets from the examples and comparative examples were injection molded and compared to each other and tested for odor at 80 ℃ for 2h and for VOC (pentabenzenetrialdehyde) using the same conditions. As shown in Table 3, it is evident that the addition of the white stone powder-reinforced masterbatch is superior in odor and VOC emission.
TABLE 3 test results
Odor evaluation score rating:
no odor was felt at 1 point;
2 minutes can feel smell, but has no stimulation to people;
3 minutes obviously feels the smell, but does not stimulate people;
4 minutes can obviously feel smell and stimulate people;
5 minute odor has strong stimulation to human;
the 6-point smell is strong to human and cannot be tolerated.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (9)
1. The low-odor polypropylene is characterized by comprising the following raw materials in parts by weight:
polypropylene: 70-80 parts of,
Toughening materials: 5-15 parts of,
Reinforcing master batch: 10-20 parts of,
Antioxidant: 0.4 to 1.0 portion of,
Light stabilizer: 0.2 to 0.6 portion of,
Lubricant: 0.2 to 0.6 portion.
2. The low-odor polypropylene as claimed in claim 1, wherein the reinforcing masterbatch is prepared from the following raw materials in parts by weight:
carrier: 15-25 parts of,
Talc powder: 25 to 55 portions of,
Opal shale: 25 to 55 portions of,
Antioxidant: 0.1 to 0.2 portion of,
Lubricant: 0.2 to 0.6 portion.
3. A low-odor polypropylene according to claim 2, wherein the carrier is PP, preferably produced by the Spherizone process or the Spheripol process.
4. The low-odor polypropylene as claimed in claim 2, wherein the talc has a mesh number of 1000-3000, and a silicon content of more than 60%; the mesh number of the opal shale is 1000-3000; the weight part ratio of the talcum powder to the opal shale is 1: 1.
5. the low-odor polypropylene according to claim 1, wherein the polypropylene is one of homo-polymerization and co-polymerization or mixed in any ratio, and the production process is a Spherizone process or a Spheripol process.
6. The low odor polypropylene of claim 1 wherein said toughening material is ethylene-octene copolymer (POE); the light stabilizer is one of hindered amine light stabilizers; the lubricant is zinc or calcium stearate, EBS, stearic acid or paraffin.
7. The low-odor polypropylene as claimed in claim 1 or 2, wherein the antioxidant is prepared by mixing a main antioxidant and an auxiliary antioxidant in a weight ratio of 1:2, wherein the main antioxidant and the auxiliary antioxidant are at least one of phenols, amines, phosphites, semi-hindered phenols or acryloyl functional groups; if the main antioxidant is one or the mixture of basf 1010 or 1076 in any ratio, preferably 1076; secondary antioxidant basf 168.
8. The method for preparing low-odor polypropylene according to claim 1, comprising the following steps:
(1) weighing the raw materials according to the weight ratio; the weight portions of the raw materials are as follows:
polypropylene: 70-80 parts of,
Toughening materials: 5-15 parts of,
Reinforcing master batch: 10-20 parts of,
Antioxidant: 0.4 to 1.0 portion of,
Light stabilizer: 0.2 to 0.6 portion of,
Lubricant: 0.2-0.6 part;
(2) putting the mixed raw materials into a double-screw extruder for melting, mixing, extruding, cooling and granulating, wherein the rotating speed of a screw is 300-500 r/min, and the temperature is 180-220 ℃ according to different regions; meanwhile, a double vacuum device is adopted for vacuum pumping treatment, and the vacuum degree is 0.07-0.12 MPa.
9. The preparation method of the low-odor polypropylene as claimed in claim 2, wherein the preparation method of the reinforced master batch comprises the following specific steps:
(1) weighing the raw materials according to the weight ratio; the weight portions of the raw materials are as follows:
carrier: 15-25 parts of,
Talc powder: 25 to 55 portions of,
Opal shale: 25 to 55 portions of,
Antioxidant: 0.1 to 0.2 portion of,
Lubricant: 0.2 to 0.6 portion.
(2) Mixing the carrier, the talcum powder, the opal shale, the antioxidant and the lubricant in a mixing roll or an internal mixer at the temperature of 110-130 ℃;
(3) putting the mixed raw materials into a double-screw extruder for extruding, cooling and granulating, wherein the rotating speed of a screw is 180-160 r/min, and the temperature is 180-220 ℃ according to different areas; meanwhile, a vacuum device is adopted for vacuum pumping treatment, and the vacuum degree is 0.07-0.12 MPa.
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Cited By (4)
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| CN113845728A (en) * | 2021-10-26 | 2021-12-28 | 苏州优矿塑新材料股份有限公司 | Polypropylene material for automotive interior and preparation method thereof |
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| CN115353093A (en) * | 2022-08-24 | 2022-11-18 | 中国第一汽车股份有限公司 | Recycling method of polypropylene composite material for automobile |
| CN115895113A (en) * | 2022-11-18 | 2023-04-04 | 中国第一汽车股份有限公司 | Heat-resistant recyclable polypropylene material and preparation method and application thereof |
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| CN114736457A (en) * | 2022-03-31 | 2022-07-12 | 上海金发科技发展有限公司 | Talcum powder polyolefin master batch and preparation method and application thereof |
| CN114736457B (en) * | 2022-03-31 | 2024-03-15 | 上海金发科技发展有限公司 | Talcum powder polyolefin master batch and preparation method and application thereof |
| CN115353093A (en) * | 2022-08-24 | 2022-11-18 | 中国第一汽车股份有限公司 | Recycling method of polypropylene composite material for automobile |
| CN115895113A (en) * | 2022-11-18 | 2023-04-04 | 中国第一汽车股份有限公司 | Heat-resistant recyclable polypropylene material and preparation method and application thereof |
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Application publication date: 20210615 |