CN111909449A - Environment-friendly polypropylene composition and preparation method thereof - Google Patents
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- 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
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
- C09C3/043—Drying, calcination
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/12—Treatment with organosilicon compounds
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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Abstract
The invention discloses an environment-friendly polypropylene composition and a preparation method thereof, wherein the polypropylene composition comprises the following components: polypropylene, modified filler, regenerated rubber powder and compatilizer. The polypropylene composition prepared by the invention is prepared by uniformly mixing polypropylene, modified filler, regenerated rubber powder and compatilizer, extruding by a double screw at the extrusion temperature of 180 ℃ and 200 ℃, and granulating after extrusion. The polypropylene composition disclosed by the invention utilizes the recycled rubber powder, is environment-friendly, has better performances in the aspects of mechanical property, anti-sticking property and molding shrinkage, and can be widely applied to automotive interior.
Description
Technical Field
The invention belongs to the field of high molecular polymers, and particularly relates to an environment-friendly polypropylene composition and a preparation method thereof.
Background
Polypropylene is a versatile material, which is a colorless, odorless, non-toxic, translucent solid substance. Due to good thermoplasticity, chemical resistance, heat resistance, electrical insulation, high-strength mechanical property, good high-wear-resistance processing property and the like, the polypropylene is rapidly and widely developed and applied in a plurality of fields such as machinery, automobiles, electronic and electric appliances, buildings, textiles, packaging, agriculture, forestry, fishery, food industry and the like since the coming out.
With the rapid development of national economy and the rapid development of the automobile industry, polypropylene materials are gradually replacing wood products due to good processability and plasticity of polypropylene, the mechanical function of metal is gradually replaced by high-strength toughness and high wear resistance, and the polypropylene is widely applied to automobile interior trim.
Rubber powder is short for rubber powder. The tire is generally processed by waste tires, and the processing method commonly adopted comprises the following steps: normal temperature pulverization, freezing, and normal temperature chemical methods. The wide use and non-degradability of rubber bring great pressure to environmental pollution, and how to better utilize the rubber powder in waste rubber powder is a difficult problem which needs to be overcome by human beings together.
Disclosure of Invention
The invention aims to provide an environment-friendly polypropylene composition which is environment-friendly, has good comprehensive mechanical property, good hair adhesion resistance and good processing property, and can be widely applied to the field of automobile interior decoration.
Further, there is a need for a process for the preparation of the above polypropylene composition.
An environment-friendly polypropylene composition, comprising the following components:
polypropylene;
modifying the filler;
regenerating rubber powder;
a compatibilizer.
Preferably, the environment-friendly polypropylene composition comprises the following components in parts by weight:
71.1-74.5 parts by weight of polypropylene;
7.3-9.2 parts of modified filler;
16.0 to 18.3 portions of regenerated rubber powder;
1.4-2.2 parts of compatilizer.
Preferably, the sum of the parts by weight of the above components is 100 parts.
More preferably, the environment-friendly polypropylene composition comprises the following components in parts by weight:
72.8 parts by weight of polypropylene;
8.5 parts of modified filler;
16.7 parts of regenerated rubber powder;
2 parts of compatilizer.
Preferably, the melt index of the polypropylene is above 30g/10min, wherein the test method of the melt index is GB/T3682-2000, and the test conditions are 230 ℃ and 2.16 Kgf.
Wherein, the modified filler is prepared by modifying talcum powder and glass fiber powder.
As an embodiment, the modified filler is prepared by the following method:
drying talcum powder and glass fiber powder at 200 ℃ for 30-45min, taking 38-43 parts by weight of talcum powder, 58-63 parts by weight of glass fiber powder, 1.4-1.6 parts by weight of bis (triethoxypropylsilane) tetrasulfide and 0.8-1 part by weight of 2, 4-toluene diamino methyl formate, uniformly mixing in a high-speed mixer at 140-150 ℃, and stirring for 30-45min to obtain the modified filler for later use.
As another embodiment, the modified filler is prepared by the following process:
drying talcum powder (1000 mesh) and glass fiber powder (800 mesh) at 200 ℃ for 30min, taking 40 parts by weight of talcum powder, 60 parts by weight of glass fiber powder, 1.5 parts by weight of bis (triethoxypropylsilane) tetrasulfide and 0.8 part by weight of 2, 4-toluene diamino methyl formate, uniformly mixing in a high mixing machine at 140-150 ℃, stirring for 30min to obtain a modified filler for later use,
preferably, the particle size mesh number of the talcum powder is more than 1000 meshes.
Preferably, the particle size mesh number of the glass fiber powder is more than 800 meshes.
The regenerated rubber powder can be derived from rubber powder which can be recycled on the market and can be selected from one or more of fluororubber powder, chloroprene rubber powder and nitrile rubber powder.
The particle size and the mesh number of the regenerated rubber powder are more than 200 meshes.
The compatilizer is selected from maleic anhydride grafted compatilizers, and is more preferably PP-g-MAH.
A method for preparing the environment-friendly polypropylene composition as described above, comprising the steps of:
1) drying talcum powder and glass fiber powder at 200 ℃ for 30-45min, taking 38-43 parts by weight of talcum powder, 58-63 parts by weight of glass fiber powder, 1.4-1.6 parts by weight of bis (triethoxypropylsilane) tetrasulfide and 0.8-1 part by weight of 2, 4-toluene diamino methyl formate, uniformly mixing in a high-speed mixer at 140-150 ℃, and stirring for 30-45min to obtain a modified filler for later use;
2) uniformly mixing polypropylene, the modified filler prepared in the step 1), the regenerated rubber powder and the compatilizer according to the weight ratio, extruding by using a double screw at the extrusion temperature of 180 ℃ and 200 ℃, and granulating after extrusion to obtain the polypropylene composition.
Compared with the prior art, the polypropylene composition prepared by the invention is prepared by uniformly mixing polypropylene, modified filler, regenerated rubber powder and compatilizer, extruding by a double screw at the extrusion temperature of 180-200 ℃, and granulating after extrusion. The modified filler is prepared from talcum powder and glass fiber powder under the modification of a special coupling agent and a special surface modifier, can play a role in better enhancing the mechanical property in a system of polypropylene and rubber, and simultaneously has better improvement on the hair-proof viscosity of the material. The polypropylene composition disclosed by the invention utilizes the recycled rubber powder, is environment-friendly, has better mechanical property, hair adhesion resistance and molding shrinkage, and can be widely applied to automotive interior trim.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make the technical field better understand the scheme of the present invention.
The original explanation is as follows:
regenerated rubber powder: fluororubber powder (200 meshes), chloroprene rubber powder (200 meshes), butyronitrile rubber powder (200 meshes), and is from Danyang Ruibang renewable resources Co., Ltd;
polypropylene: shanghai Seaker, model S2040, with a melt index of 33.5g/10min under the test conditions of GB/T3682-;
talc powder: shijiazhuang Xinsheng mineral products Co., Ltd., 400 mesh, 1000 mesh;
surface modifier: 2, 4-toluene Dicarbamic acid methyl ester, CAS:18595-17-0, Zhengzhou Akhm chemical Co., Ltd
Coupling agent: bis-triethoxypropylsilane tetrasulfide, Digaosha, Si-69;
glass fiber powder: zibonxinnuo new materials Co., Ltd, 800 mesh, 200 mesh;
glass fiber: the salt city Hencao glass fiber company has the specification of 5-10um diameter and 0.5-3mm length.
A compatilizer: maleic anhydride graft compatibilizer (PP-g-MAH), DingHAI brand, a tripod-sea plastics chemical Co., Ltd, Dongguan;
the remainder was commercially available.
Examples 1, 4 and 5
1) Preparation of modified fillers
Drying talcum powder (1000 mesh) and glass fiber powder (800 mesh) at 200 ℃ for 30min, taking 40 parts by weight of talcum powder, 60 parts by weight of glass fiber powder, 1.5 parts by weight of bis (triethoxypropylsilane) tetrasulfide and 0.8 part by weight of 2, 4-toluene diamino methyl formate, uniformly mixing in a high mixing machine at 140-150 ℃, stirring for 30min to obtain a modified filler for later use,
2) uniformly mixing polypropylene, the modified filler prepared in the step 1), the fluororubber powder (200 meshes) and the compatilizer according to the weight ratio shown in the table 1), extruding by using a double screw at the extrusion temperature of 180 ℃ and 200 ℃, and granulating after extrusion to obtain the polypropylene composition.
Example 2
1) Preparation of modified fillers
Drying talcum powder (1000 mesh) and glass fiber powder (800 mesh) at 180 ℃ for 45min, taking 43 parts by weight of talcum powder, 58 parts by weight of glass fiber powder, 1.6 parts by weight of bis (triethoxypropylsilane) tetrasulfide and 1 part by weight of 2, 4-toluene dicarbamate, uniformly mixing in a high-speed mixer at 140-150 ℃, stirring for 45min to obtain a modified filler for later use,
2) uniformly mixing polypropylene, the modified filler prepared in the step 1), chloroprene rubber powder (200 meshes) and a compatilizer according to the weight ratio shown in the table 1, extruding by using a double screw at the extrusion temperature of 180 ℃ and 200 ℃, and granulating after extrusion to obtain the polypropylene composition.
Example 3
1) Preparation of modified fillers
Drying talcum powder (1000 mesh) and glass fiber powder (800 mesh) at 200 ℃ for 30min, taking 38 parts by weight of talcum powder, 63 parts by weight of glass fiber powder, 1.4 parts by weight of bis (triethoxypropylsilane) tetrasulfide and 1 part by weight of 2, 4-toluene diamino methyl formate, uniformly mixing in a high-speed mixer at 140-150 ℃, stirring for 30min to obtain a modified filler for later use,
2) uniformly mixing polypropylene, the modified filler prepared in the step 1), the nitrile rubber powder (200 meshes) and the compatilizer according to the weight ratio shown in the table 1), extruding by using a double screw at the extrusion temperature of 180 ℃ and 200 ℃, and granulating after extrusion to obtain the polypropylene composition.
Comparative example 1
1) Preparation of modified fillers
Drying talcum powder (1000 mesh) and glass fiber powder (800 mesh) at 200 deg.C for 30min, mixing 40 weight parts of talcum powder, 60 weight parts of glass fiber powder and 1.5 weight parts of bis (triethoxypropylsilane) tetrasulfide at 140-150 deg.C in a high-speed mixer, stirring for 30min to obtain modified filler,
2) uniformly mixing polypropylene, the modified filler prepared in the step 1), the fluororubber powder (200 meshes) and the compatilizer according to the weight ratio shown in the table 1), extruding by using a double screw at the extrusion temperature of 180 ℃ and 200 ℃, and granulating after extrusion to obtain the polypropylene composition.
Comparative example 2
1) Preparation of modified fillers
Drying pulvis Talci (1000 mesh) and glass fiber powder (800 mesh) at 200 deg.C for 30min, mixing 40 weight parts of pulvis Talci, 60 weight parts of glass fiber powder and 0.8 weight part of 2, 4-toluene diamino methyl formate at 140 deg.C-150 deg.C in a high-speed mixer, stirring for 30min to obtain modified filler,
2) uniformly mixing polypropylene, the modified filler prepared in the step 1), the fluororubber powder (200 meshes) and the compatilizer according to the weight ratio shown in the table 1), extruding by using a double screw at the extrusion temperature of 180 ℃ and 200 ℃, and granulating after extrusion to obtain the polypropylene composition.
Comparative example 3
1) Preparation of modified fillers
Drying glass fiber powder (800 meshes) at 200 ℃ for 30min, taking 100 parts by weight of glass fiber powder, 1.5 parts by weight of bis (triethoxypropylsilane) tetrasulfide and 0.8 part by weight of 2, 4-toluene dicarbamate, uniformly mixing in a high-speed mixer at 140-150 ℃, stirring for 30min to obtain modified filler for later use,
2) uniformly mixing polypropylene, the modified filler prepared in the step 1), the fluororubber powder (200 meshes) and the compatilizer according to the weight ratio shown in the table 1), extruding by using a double screw at the extrusion temperature of 180 ℃ and 200 ℃, and granulating after extrusion to obtain the polypropylene composition.
Comparative example 4
1) Preparation of modified fillers
Drying talcum powder (400 meshes) and glass fiber powder (800 meshes) at 200 ℃ for 30min, taking 40 parts by weight of talcum powder, 60 parts by weight of glass fiber powder, 1.5 parts by weight of bis (triethoxypropylsilane) tetrasulfide and 0.8 part by weight of 2, 4-toluene diamino methyl formate, uniformly mixing in a high mixing machine at 140-150 ℃, stirring for 30min to obtain a modified filler for later use,
2) uniformly mixing polypropylene, the modified filler prepared in the step 1), the fluororubber powder (200 meshes) and the compatilizer according to the weight ratio shown in the table 1), extruding by using a double screw at the extrusion temperature of 180 ℃ and 200 ℃, and granulating after extrusion to obtain the polypropylene composition.
Comparative example 5
1) Preparation of modified fillers
Drying talcum powder (1000 mesh) and glass fiber powder (800 mesh) at 200 ℃ for 30min, taking 40 parts by weight of talcum powder, 60 parts by weight of glass fiber powder, 1.5 parts by weight of bis (triethoxypropylsilane) tetrasulfide and 0.8 part by weight of 2, 4-toluene diamino methyl formate, uniformly mixing in a high mixing machine at 140-150 ℃, stirring for 30min to obtain a modified filler for later use,
2) uniformly mixing polypropylene, the modified filler prepared in the step 1), the fluororubber powder (200 meshes) and the compatilizer according to the weight ratio shown in the table 1), extruding by using a double screw at the extrusion temperature of 180 ℃ and 200 ℃, and granulating after extrusion to obtain the polypropylene composition.
TABLE 1 EXAMPLES comparative examples formulation Table (units are parts by weight)
The polymers obtained in examples 1 to 5 and comparative examples 1 to 5 were subjected to the following property tests, and the test results are shown in Table 3:
description of Performance test methods
The tensile strength was examined according to GB/T1040-2006, at a tensile rate of 5 mm/s.
Anti-tackiness property: the polypropylene compositions were injection molded into the same test specimens, subjected to an accelerated test in accordance with the American society for automotive Engineers test standard SAE J2412, and then evaluated for surface tackiness as required in the TS-BD-002-2011 standards, the tackiness rating tables of which are shown in Table 2, and the tackiness ratings of the test specimens obtained from the polypropylene compositions of the examples and comparative examples are shown in Table 3.
TABLE 2 detackifying class characteristic correspondence table
| Grade | Tacky characteristics |
| 1 | Surface non-stick |
| S | The surface has exudation of substances but no stickiness |
| 2 | Slight stickiness of the surface |
| 3 | Moderate tack on the surface |
| 4 | Severe surface tackiness |
| H | With resinified lumps on the surface |
| W | Wax-like substance is precipitated on the surface |
| X | Sample cracking, test interruption |
Molding shrinkage (%): the measurement was carried out according to ISO 294-4-2003.
Surface fiber floating: and (3) injection molding the polypropylene composition into a sample of 5cm by 8cm by 0.5cm, soaking in a 50% sulfuric acid solution at 80 ℃ for 20min, taking out, cleaning and drying, and observing whether the surface has floating fibers.
TABLE 3 Polypropylene composition Property testing
Experiments show that the polypropylene composition prepared by the invention utilizes the recycled rubber powder, is environment-friendly, has good mechanical property, hair adhesion resistance and molding shrinkage, and can be widely applied to automotive interior.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An environment-friendly polypropylene composition, comprising the following components:
polypropylene;
modifying the filler;
regenerating rubber powder;
a compatibilizer.
2. The environment-friendly polypropylene composition according to claim 1, comprising the following components in parts by weight:
3. the environmentally friendly polypropylene composition of claim 1, wherein:
the melt index of the polypropylene is above 30g/10min, wherein the test method of the melt index is GB/T3682-2000, and the test conditions are 230 ℃ and 2.16 Kgf.
4. The environment-friendly polypropylene composition according to claim 1, wherein the modified filler is prepared by modifying talc powder and glass fiber powder.
5. The environmentally friendly polypropylene composition of claim 1, wherein the modified filler is prepared by the following method:
drying talcum powder and glass fiber powder at 200 ℃ for 30-45min, taking 38-43 parts by weight of talcum powder, 58-63 parts by weight of glass fiber powder, 1.4-1.6 parts by weight of bis (triethoxypropylsilane) tetrasulfide and 0.8-1 part by weight of 2, 4-toluene diamino methyl formate, uniformly mixing in a high-speed mixer at 140-150 ℃, and stirring for 30-45min to obtain the modified filler for later use.
6. The environment-friendly polypropylene composition according to claim 1, wherein the talc has a particle size of 1000 mesh or more.
7. The environment-friendly polypropylene composition according to claim 1, wherein the glass fiber powder has a particle size of 800 mesh or more.
8. The environment-friendly polypropylene composition according to claim 1, wherein the reclaimed rubber powder is selected from one or more of fluororubber powder, chloroprene rubber powder and nitrile rubber powder.
9. The environmentally friendly polypropylene composition of claim 1, wherein the compatibilizer is selected from the group consisting of maleic anhydride grafted compatibilizers.
10. A method for preparing the environmentally friendly polypropylene composition according to any one of claims 1 to 9, comprising the steps of:
1) drying talcum powder and glass fiber powder at 200 ℃ for 30-45min, taking 38-43 parts by weight of talcum powder, 58-63 parts by weight of glass fiber powder, 1.4-1.6 parts by weight of bis (triethoxypropylsilane) tetrasulfide and 0.8-1 part by weight of 2, 4-toluene diamino methyl formate, uniformly mixing in a high-speed mixer at 140-150 ℃, and stirring for 30-45min to obtain a modified filler for later use;
2) uniformly mixing polypropylene, the modified filler prepared in the step 1), the regenerated rubber powder and the compatilizer according to the weight ratio, extruding by using a double screw at the extrusion temperature of 180 ℃ and 200 ℃, and granulating after extrusion to obtain the polypropylene composition.
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| CN112538216A (en) * | 2020-12-08 | 2021-03-23 | 武汉金发科技有限公司 | Polypropylene composite material and preparation method thereof |
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| 郑永林 等编著: "《粉体表面改性》", 30 September 2011, 中国建材工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112538216A (en) * | 2020-12-08 | 2021-03-23 | 武汉金发科技有限公司 | Polypropylene composite material and preparation method thereof |
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