CN111117061A - Novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material and preparation method thereof - Google Patents
Novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material and preparation method thereof Download PDFInfo
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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Abstract
The invention discloses a novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material and a preparation method thereof, wherein the formula is prepared from the following components in parts by weight: 15-30 parts of regenerated polypropylene resin, 35-65 parts of conventional polypropylene resin, 20-30 parts of glass fiber, 1-3 parts of compatilizer, 1-2 parts of carbon black master batch, 0.5-1.5 parts of antioxidant, 0.5-1.5 parts of light-resistant auxiliary agent and 0.03-0.05 part of essence. Compared with the common long glass fiber reinforced material with the same mark on the market, the base material of the long glass fiber reinforced polypropylene composite material prepared by the invention contains certain regenerated polypropylene resin, so that the production cost is reduced, and the low-carbon environmental protection concept of market mainstream is met. For the problems of poor follow-up odor and the like caused by the recycled material, the recycled polypropylene raw material is treated by a process means, and the final product has the advantages of low production cost, less surface defects and improved odor, and can be widely applied to the fields of automobile materials, municipal engineering and the like.
Description
Technical Field
The invention relates to the technical field of polypropylene materials, in particular to a novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material and a preparation method thereof. The material is suitable for manufacturing automobile appearance parts, electric fittings, municipal engineering articles and the like.
Background
In recent years, the concept of low carbon and environmental protection is gradually created, the automobile industry gradually increases the attention, development and utilization of environment-friendly materials, and the enterprises such as the first-line brand of Audi Baoma and the like are gradually increasing the application proportion of the recycled materials in the products, so that the production cost of the products can be reduced, and the important significance is achieved in the aspects of recycling the materials and reducing the energy consumption. Under this green and environmental concept, the development and application of renewable materials are receiving more and more attention in the automobile industry. The reinforced polypropylene has higher tensile strength, bending strength and modulus, is beneficial to realizing the wide application of plastics on the bearing parts in the automobile industry, and is also beneficial to realizing the aims of reducing energy consumption and cost and improving benefit. Therefore, in recent years, reinforced polypropylene materials have been widely used in the fields of automobiles, home appliances, and the like.
The traditional long glass fiber material used for reinforcing the polypropylene material has some defects which need to be perfected continuously. Although having excellent performance, the production cost is always high, and the material has certain pungent smell in the production process and the subsequent use process due to the characteristics of the material. These deficiencies have made the improvement of odor and cost reduction of long glass fiber reinforced polypropylene materials a major concern in recent years.
Disclosure of Invention
The invention aims to solve the technical problems that the production cost of the existing long glass fiber reinforced polypropylene material for interior decoration is too high and the smell is bad, and provides a novel low-cost environment-friendly long glass fiber reinforced polypropylene composite material:
in order to solve the technical problems, the invention adopts the following technical scheme:
the novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material comprises, by weight, 15-30 parts of regenerated polypropylene resin, 35-65 parts of conventional polypropylene resin, 20-30 parts of glass fiber, 1-3 parts of compatilizer, 1-2 parts of carbon black master batch, 0.5-1.5 parts of antioxidant, 0.5-1.5 parts of light-resistant auxiliary agent and 0.03-0.05 part of essence.
The regenerated polypropylene resin has stable fluidity, and the MFR of the regenerated polypropylene resin is more than or equal to 10.
The conventional polypropylene base material is high-fluidity PP (polypropylene), and the MFR (flow rate) of the conventional polypropylene base material is more than or equal to 75
The glass fiber is high-modulus alkali-free glass fiber: the monofilament diameter is 10-17 μm, 900tex-2400 tex.
The compatilizer is at least one of low-odor low-emission maleic anhydride grafted PP, silane coupling agent and acrylic acid grafted PP.
The antioxidant is at least one of general type 168, 619F, 1010 and 1076.
The light stabilizer is at least one selected from p-octyl phenyl salicylate and 2, 4-di-tert-butyl phenyl 3, 5-di-tert-butyl-4-hydroxybenzoate.
The essence is at least one of mint essence, green tea essence and rose essence.
A preparation method of a novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material comprises the following steps:
(1) mixing and extruding a regenerated polypropylene raw material and conventional polypropylene, granulating the mixture to obtain raw material polypropylene, and adding the raw material polypropylene into a vacuum system in the extrusion process;
(2) mixing and stirring polypropylene, a compatilizer, an antioxidant, a light stabilizer, carbon black master batch and essence at a high speed according to a proportion;
(3) and (3) uniformly mixing the materials in the step (2), then feeding the mixture into a double-screw extruder, and then feeding the mixture into a melting and dipping die head, wherein the processing temperature is 220-250 ℃, and the rotating speed of a host is 300-500 rpm. Adding a vacuum pumping system in the extrusion process;
(4) preheating and drying the continuous long glass fiber for 3-5 hours to make the temperature of the continuous long glass fiber be 80-90 ℃, and pre-dispersing the glass fiber by a tension frame;
(5) a plurality of strands of untwisted long glass fiber yarns are respectively led out from the yarn tubes and guided into a melting and dipping mold box. Adding an ultrasonic dispersion device into an impregnation die head, applying ultrasonic waves with fixed frequency into a die box, coating and impregnating untwisted fibers by a melt modified polypropylene resin melt, wherein the processing temperature is 230-300 ℃, the glass fiber drawing speed is 10-30m/min, adopting a pultrusion process to uniformly coat a plurality of strands of drawn long glass fiber yarns, then cooling by a water tank, and cutting into granules by a granulator to prepare long glass fiber reinforced polypropylene granules with the length of 9-13mm, wherein the weight content of the fibers is 20-30%.
In the production process of the long glass fiber reinforced polypropylene material, the recycled material is selected as one of the main raw materials for production from the production requirements of enterprises, so that the production cost of the long glass fiber reinforced material is effectively reduced. In order to avoid the problem, the recycled polypropylene material is preferentially treated, meanwhile, the odor of the material is improved by adding the essence with extremely low proportion, the adding proportion of the conventional graft is reduced, and the pungent odor caused by the small molecules of the material is effectively inhibited. In the production process, a vacuum pumping system and an ultrasonic dispersion system are adopted to treat base material polypropylene in a molten state, so that the odor influence generated by polypropylene base material small molecules and graft small molecules is reduced. The low-carbon environmental protection concept is taken as guidance, the impregnation effect of the glass fibers is improved on the premise of ensuring the standard of the product performance composite common material, the damage of the glass fibers is avoided, and the mechanical property of the produced reinforced polypropylene product is effectively improved. Compared with the traditional long glass fiber reinforced composite material, the production cost is effectively controlled.
Detailed Description
The following is a further explanation of the present disclosure in connection with the examples, but the examples are not intended to limit the present disclosure in any way.
Example 1:
(1) mixing and stirring the conventional polypropylene, the compatilizer, the antioxidant, the light stabilizer and the carbon black master batch at a high speed according to a proportion.
(2) And (3) uniformly mixing the materials in the step (1), then feeding the mixture into a double-screw extruder, and then feeding the mixture into a melting and dipping die head, wherein the processing temperature is 220-250 ℃, and the rotating speed of a host is 300-500 rpm. A vacuum pumping system is added in the extrusion process.
(3) The continuous long glass fiber is preheated and dried for 3-5 hours to the temperature of 80-90 ℃, and the glass fiber is pre-dispersed through a tension frame.
(4) A plurality of strands of untwisted long glass fiber yarns are respectively led out from the yarn tubes and guided into a melting and dipping mold box. Adding an ultrasonic dispersion device into an impregnation die head, applying ultrasonic waves with fixed frequency into a die box, coating and impregnating untwisted fibers by a melt modified polypropylene resin melt, wherein the processing temperature is 230-300 ℃, the glass fiber drawing speed is 10-30m/min, adopting a pultrusion process to uniformly coat a plurality of strands of drawn long glass fiber yarns, then cooling by a water tank, and cutting into granules by a granulator to prepare long glass fiber reinforced polypropylene granules with the length of 9-13mm, wherein the weight content of the fibers is 20-30%.
Example 2:
(1) mixing and extruding a regenerated polypropylene raw material and conventional polypropylene, granulating the mixture to obtain raw material polypropylene, and adding the raw material polypropylene into a vacuum system in the extrusion process.
(2) Mixing polypropylene, compatilizer, antioxidant, light stabilizer, carbon black master batch and essence at a high speed according to a proportion.
(3) And (3) uniformly mixing the materials in the step (2), then feeding the mixture into a double-screw extruder, and then feeding the mixture into a melting and dipping die head, wherein the processing temperature is 220-250 ℃, and the rotating speed of a host is 300-500 rpm. A vacuum pumping system is added in the extrusion process.
(4) The continuous long glass fiber is preheated and dried for 3-5 hours to the temperature of 80-90 ℃, and the glass fiber is pre-dispersed through a tension frame.
(5) A plurality of strands of untwisted long glass fiber yarns are respectively led out from the yarn tubes and guided into a melting and dipping mold box. Adding an ultrasonic dispersion device into an impregnation die head, applying ultrasonic waves with fixed frequency into a die box, coating and impregnating untwisted fibers by a melt modified polypropylene resin melt, wherein the processing temperature is 230-300 ℃, the glass fiber drawing speed is 10-30m/min, adopting a pultrusion process to uniformly coat a plurality of strands of drawn long glass fiber yarns, then cooling by a water tank, and cutting into granules by a granulator to prepare long glass fiber reinforced polypropylene granules with the length of 9-13mm, wherein the weight content of the fibers is 20-30%.
Example 3:
(1) mixing and extruding a regenerated polypropylene raw material and conventional polypropylene, granulating the mixture to obtain raw material polypropylene, and adding the raw material polypropylene into a vacuum system in the extrusion process.
(2) Mixing polypropylene, compatilizer, antioxidant, light stabilizer, carbon black master batch and essence at a high speed according to a proportion.
(3) And (3) uniformly mixing the materials in the step (2), then feeding the mixture into a double-screw extruder, and then feeding the mixture into a melting and dipping die head, wherein the processing temperature is 220-250 ℃, and the rotating speed of a host is 300-500 rpm. A vacuum pumping system is added in the extrusion process.
(4) The continuous long glass fiber is preheated and dried for 3-5 hours to the temperature of 80-90 ℃, and the glass fiber is pre-dispersed through a tension frame.
(5) A plurality of strands of untwisted long glass fiber yarns are respectively led out from the yarn tubes and guided into a melting and dipping mold box. Adding an ultrasonic dispersion device into an impregnation die head, applying ultrasonic waves with fixed frequency into a die box, coating and impregnating untwisted fibers by a melt modified polypropylene resin melt, wherein the processing temperature is 230-300 ℃, the glass fiber drawing speed is 10-30m/min, adopting a pultrusion process to uniformly coat a plurality of strands of drawn long glass fiber yarns, then cooling by a water tank, and cutting into granules by a granulator to prepare long glass fiber reinforced polypropylene granules with the length of 9-13mm, wherein the weight content of the fibers is 20-30%. The procedure was as in example 2.
Comparative example 1:
(1) mixing and extruding a regenerated polypropylene raw material and conventional polypropylene, granulating the mixture to obtain raw material polypropylene, and adding the raw material polypropylene into a vacuum system in the extrusion process.
(2) Mixing and stirring the polypropylene, the compatilizer, the antioxidant, the light stabilizer and the carbon black master batch at a high speed according to a proportion.
(3) And (3) uniformly mixing the materials in the step (2), then feeding the mixture into a double-screw extruder, and then feeding the mixture into a melting and dipping die head, wherein the processing temperature is 220-250 ℃, and the rotating speed of a host is 300-500 rpm. A vacuum pumping system is added in the extrusion process.
(4) The continuous long glass fiber is preheated and dried for 3-5 hours to the temperature of 80-90 ℃, and the glass fiber is pre-dispersed through a tension frame.
(5) A plurality of strands of untwisted long glass fiber yarns are respectively led out from the yarn tubes and guided into a melting and dipping mold box. Adding an ultrasonic dispersion device into an impregnation die head, applying ultrasonic waves with fixed frequency into a die box, coating and impregnating untwisted fibers by a melt modified polypropylene resin melt, wherein the processing temperature is 230-300 ℃, the glass fiber drawing speed is 10-30m/min, adopting a pultrusion process to uniformly coat a plurality of strands of drawn long glass fiber yarns, then cooling by a water tank, and cutting into granules by a granulator to prepare long glass fiber reinforced polypropylene granules with the length of 9-13mm, wherein the weight content of the fibers is 20-30%.
Comparative example 2
(1) Mixing and stirring the regenerated polypropylene, the compatilizer, the antioxidant, the light stabilizer and the carbon black master batch at a high speed according to a proportion.
(2) And (3) uniformly mixing the materials in the step (1), then feeding the mixture into a double-screw extruder, and then feeding the mixture into a melting and dipping die head, wherein the processing temperature is 220-250 ℃, and the rotating speed of a host is 300-500 rpm. A vacuum pumping system is added in the extrusion process.
(3) The continuous long glass fiber is preheated and dried for 3-5 hours to the temperature of 80-90 ℃, and the glass fiber is pre-dispersed through a tension frame.
(4) A plurality of strands of untwisted long glass fiber yarns are respectively led out from the yarn tubes and guided into a melting and dipping mold box. Adding an ultrasonic dispersion device into an impregnation die head, applying ultrasonic waves with fixed frequency into a die box, coating and impregnating untwisted fibers by a melt modified polypropylene resin melt, wherein the processing temperature is 230-300 ℃, the glass fiber drawing speed is 10-30m/min, adopting a pultrusion process to uniformly coat a plurality of strands of drawn long glass fiber yarns, then cooling by a water tank, and cutting into granules by a granulator to prepare long glass fiber reinforced polypropylene granules with the length of 9-13mm, wherein the weight content of the fibers is 20-30%. The procedure was the same as in comparative example 1.
Table 1: formulation tables for examples 1-3 and comparative examples 1-2
| Raw material ratio | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 |
| Recycled polypropylene | 0 | 14.97 | 24.97 | 25 | 76.97 |
| Conventional polypropylene | 77 | 62 | 52 | 52 | 0 |
| Long glass fibers | 20 | 20 | 20 | 20 | 20 |
| Compatilizer | 2 | 2 | 2 | 2 | 2 |
| Light stabilizers | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Antioxidant agent | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Essence | 0 | 0.03 | 0.03 | 0 | 0.03 |
Table 2: test results of examples 1 to 3 and comparative examples 1 to 2
As can be seen from the data in tables 1 and 2, compared with the long glass fiber reinforced polypropylene material produced by the conventional production method, the product produced by using the recycled polypropylene material has a certain loss in mechanical properties, but can still meet the material standard of the common host factory, which provides a feasible scheme for reducing the cost in the subsequent production. The odor grade of the product can be effectively improved by inhibiting the residual micromolecules of the graft of the product and the micromolecules of the raw materials generated in the production process. When the product is produced by adopting all the regenerated raw materials, the processing difficulty of the product is improved, and the performance of the product is seriously reduced, so that the mechanical property requirement of the conventional material cannot be met. The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (9)
1. The utility model provides a novel fine reinforcing polypropylene composite of long glass of low cost of environmental protection which characterized in that: the light-resistant polypropylene resin comprises, by weight, 15-30 parts of regenerated polypropylene resin, 35-65 parts of conventional polypropylene resin, 20-30 parts of glass fiber, 1-3 parts of a compatilizer, 1-2 parts of carbon black master batch, 0.5-1.5 parts of an antioxidant, 0.5-1.5 parts of a light-resistant auxiliary agent and 0.03-0.05 part of an essence.
2. The novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material as claimed in claim 1, wherein: the regenerated polypropylene resin has stable fluidity, and the MFR of the regenerated polypropylene resin is more than or equal to 10.
3. The novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material as claimed in claim 1, wherein: the conventional polypropylene base material is high-fluidity PP, and the MFR of the conventional polypropylene base material is more than or equal to 75.
4. The novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material as claimed in claim 1, wherein: the glass fiber is high-modulus alkali-free glass fiber: the monofilament diameter is 10-17 μm, 900tex-2400 tex.
5. The novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material as claimed in claim 1, wherein: the compatilizer is at least one of low-odor low-emission maleic anhydride grafted PP, silane coupling agent and acrylic acid grafted PP.
6. The novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material as claimed in claim 1, wherein: the antioxidant is at least one of general type 168, 619F, 1010 and 1076.
7. The novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material as claimed in claim 1, wherein: the light stabilizer is at least one selected from p-octyl phenyl salicylate and 2, 4-di-tert-butyl phenyl 3, 5-di-tert-butyl-4-hydroxybenzoate.
8. The novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material as claimed in claim 1, wherein: the essence is at least one of mint essence, green tea essence and rose essence.
9. The preparation method of the novel environment-friendly low-cost long glass fiber reinforced polypropylene composite material as claimed in any one of claims 1 to 8, wherein the preparation method comprises the following steps: the method comprises the following steps:
(1) mixing and extruding a regenerated polypropylene raw material and conventional polypropylene, granulating the mixture to obtain raw material polypropylene, and adding the raw material polypropylene into a vacuum system in the extrusion process;
(2) mixing and stirring polypropylene, a compatilizer, an antioxidant, a light stabilizer, carbon black master batch and essence at a high speed according to a proportion;
(3) and (3) uniformly mixing the materials in the step (2), then feeding the mixture into a double-screw extruder, and then feeding the mixture into a melting and dipping die head, wherein the processing temperature is 220-250 ℃, and the rotating speed of a host is 300-500 rpm. Adding a vacuum pumping system in the extrusion process;
(4) preheating and drying the continuous long glass fiber for 3-5 hours to make the temperature of the continuous long glass fiber be 80-90 ℃, and pre-dispersing the glass fiber by a tension frame;
(5) leading out a plurality of strands of untwisted long glass fiber yarns from the yarn tubes respectively, and leading the glass fiber yarns into a melting dipping mold box; adding an ultrasonic dispersion device into an impregnation die head, applying ultrasonic waves with fixed frequency into a die box, coating and impregnating untwisted fibers by a melt modified polypropylene resin melt, wherein the processing temperature is 230-300 ℃, the glass fiber drawing speed is 10-30m/min, adopting a pultrusion process to uniformly coat a plurality of strands of drawn long glass fiber yarns, then cooling by a water tank, and cutting into granules by a granulator to prepare long glass fiber reinforced polypropylene granules with the length of 9-13mm, wherein the weight content of the fibers is 20-30%.
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| CN112175298A (en) * | 2020-11-03 | 2021-01-05 | 中创科技孵化器泰州有限公司 | Novel glass fiber carbon fiber reinforced polypropylene composite material |
| CN112457584A (en) * | 2020-11-30 | 2021-03-09 | 上海普利特复合材料股份有限公司 | Novel layered material composite long glass fiber reinforced polypropylene composite material and preparation method thereof |
| CN112457591A (en) * | 2020-11-25 | 2021-03-09 | 江苏金发科技新材料有限公司 | Laser-weldable long glass fiber reinforced polypropylene composite material with good air tightness and preparation method thereof |
| CN112708209A (en) * | 2020-12-29 | 2021-04-27 | 上海普利特复合材料股份有限公司 | Lightweight high-strength glass fiber reinforced polypropylene composite material and preparation method thereof |
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| CN112175298A (en) * | 2020-11-03 | 2021-01-05 | 中创科技孵化器泰州有限公司 | Novel glass fiber carbon fiber reinforced polypropylene composite material |
| CN112457591A (en) * | 2020-11-25 | 2021-03-09 | 江苏金发科技新材料有限公司 | Laser-weldable long glass fiber reinforced polypropylene composite material with good air tightness and preparation method thereof |
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| CN112708209A (en) * | 2020-12-29 | 2021-04-27 | 上海普利特复合材料股份有限公司 | Lightweight high-strength glass fiber reinforced polypropylene composite material and preparation method thereof |
| CN116218075A (en) * | 2022-12-30 | 2023-06-06 | 上海普利特复合材料股份有限公司 | Long glass fiber reinforced recycled polypropylene material with low volatile organic compounds and preparation method thereof |
| CN116218075B (en) * | 2022-12-30 | 2024-08-13 | 上海普利特复合材料股份有限公司 | Long glass fiber reinforced recycled polypropylene material with low volatile organic compounds and preparation method thereof |
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Inventor after: He Shuhang Inventor after: Zhang Yang Inventor after: Yao Daichuan Inventor after: Cai Qing Inventor after: Zhou Wu Inventor after: Zhou Wen Inventor before: He Shuhang Inventor before: Zhang Yang Inventor before: Yao Daichuan Inventor before: Zhou Zhenqi Inventor before: Cai Qing Inventor before: Zhou Wu Inventor before: Zhou Wen |
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Application publication date: 20200508 |