CN111808362A - Light low-odor polypropylene composite material - Google Patents
Light low-odor polypropylene composite material Download PDFInfo
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- CN111808362A CN111808362A CN202010640721.4A CN202010640721A CN111808362A CN 111808362 A CN111808362 A CN 111808362A CN 202010640721 A CN202010640721 A CN 202010640721A CN 111808362 A CN111808362 A CN 111808362A
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- cyclohexanol
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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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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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
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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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- Health & Medical Sciences (AREA)
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- Polymers & Plastics (AREA)
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Abstract
The invention relates to a light low-odor polypropylene composite material, which comprises polypropylene resin, polyurethane, expanded perlite loaded with cyclohexanol and glass fiber; the expanded perlite loaded with cyclohexanol is prepared by the following method: firstly, placing expanded perlite in a sealed container and vacuumizing; then cyclohexanol is introduced into a sealed container; absorbing cyclohexanol into the pores of the expanded perlite under the action of negative pressure, and then drying for later use; the weight of the expanded perlite after the control treatment is increased by 12 to 25 percent. The injection molding finished product of the polypropylene material has the characteristic of light weight by adding the expanded perlite; the odor and the organic matter volatilization amount of the polypropylene composite material and the injection molding product thereof are reduced by adding cyclohexanol; the load and protection of the expanded perlite on the cyclohexanol reduce the loss of the cyclohexanol in the previous working procedure, and the cyclohexanol is uniformly dispersed in the polypropylene substrate, so that the effect of the cyclohexanol is better exerted.
Description
Technical Field
The invention relates to the field of polypropylene materials, in particular to a light low-odor polypropylene composite material.
Background
Since the polypropylene material is a material with high cost performance, the application of the polypropylene material to plastic parts of automobiles has been continuously expanded, and the polypropylene material is currently widely applied to main plastic parts of automobiles such as bumpers, automobile instrument panels, door panels, center channels, pillars, trunks and the like. The light weight is always the continuous pursuit target of the automobile industry, so that the preparation of light polypropylene materials is always the key problem of the research of the automobile industry; meanwhile, the polypropylene material contains organic small molecular compounds with volatile characteristics and pungent odor to different degrees during manufacturing or processing; in the using process of the polypropylene material, the polypropylene material can emit out, so that the smell in the automobile is worsened, and the health of people in the automobile is seriously harmed, therefore, the preparation of the low-smell polypropylene material is also a problem of the research of the automobile industry.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the polypropylene composite material with light weight, volatile organic compounds and low odor.
In order to achieve the purpose, the invention adopts the technical scheme that: provides a light low-odor polypropylene composite material, which is characterized in that: comprises polypropylene resin, polyurethane, expanded perlite loaded with cyclohexanol and glass fiber; the expanded perlite loaded with cyclohexanol is prepared by the following method: firstly, placing expanded perlite in a sealed container and vacuumizing; then cyclohexanol is introduced into a sealed container; absorbing cyclohexanol into the pores of the expanded perlite under the action of negative pressure, and then drying for later use; the weight of the expanded perlite after the control treatment is increased by 12 to 25 percent.
Preferably, the vacuum degree of the expanded perlite is controlled between 0.03 and 0.08MPa when the expanded perlite is placed in a sealed container and the vacuum is pumped.
As a preferable scheme, the paint also comprises a filler, a compatilizer, a heat-resistant agent and an antioxidant.
The more preferable scheme comprises 100 parts by mass of polypropylene resin, 15-25 parts by mass of polyurethane, 10-16 parts by mass of expanded perlite loaded with cyclohexanol, 10-15 parts by mass of glass fiber, 10-25 parts by mass of filler, 1-4 parts by mass of compatilizer, 0.5-1.5 parts by mass of heat-resistant agent and 0.5-1.5 parts by mass of antioxidant.
As a more preferable mode, the flow rate of the polypropylene resin under a load of 2.16kg at a temperature of 230 ℃ is 45 to 60 g/min; the polyurethane resin is polyether polyurethane elastomer.
More preferably, the glass fiber has an elliptical cross section and a density of 2.2 to 2.66g/cm3(ii) a The filler is talcum powder with the particle size of 20-30 mu m.
As a more preferable embodiment, the compatibilizer is maleic anhydride grafted polypropylene; the heat-resistant agent is a phenol heat-resistant agent; the antioxidant is hindered phenol antioxidant.
The invention has the beneficial technical effects that: provides a polypropylene composite material with light weight, volatile organic compounds and low odor. The injection molding finished product of the polypropylene material has the characteristic of light weight by adding the expanded perlite; the odor and the organic matter volatilization amount of the polypropylene composite material and the injection molding product thereof are reduced by adding cyclohexanol; the load and protection of the expanded perlite on the cyclohexanol reduce the loss of the cyclohexanol in the previous working procedure, and the cyclohexanol is uniformly dispersed in the polypropylene substrate, so that the effect of the cyclohexanol is better exerted.
Detailed Description
The invention is further described with reference to specific examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
The invention provides a light low-odor polypropylene composite material, which consists of 100 parts by mass of polypropylene resin, 20 parts by mass of polyurethane, 12 parts by mass of expanded perlite loaded with cyclohexanol, 15 parts by mass of glass fiber, 15 parts by mass of filler, 2 parts by mass of compatilizer, 0.5 part by mass of heat-resistant agent and 0.5 part by mass of antioxidant.
Wherein: the expanded perlite loaded with cyclohexanol is prepared by the following method: (1) placing the expanded perlite in a sealed container, and vacuumizing to 0.05 Mpa; (2) introducing cyclohexanol into a sealed container; absorbing cyclohexanol into the pores of the expanded perlite under the action of negative pressure, and then drying for later use; and controlling the weight gain of the expanded perlite after treatment to be 20 percent, namely the amount of cyclohexanol adsorbed to the expanded perlite is 20 percent of the self weight of the expanded perlite.
The flow rate of the polypropylene resin is 45-60g/min under the load of 2.16kg at the temperature of 230 ℃; the polyurethane resin is a polyether polyurethane elastomer and can provide a certain soft touch feeling for the composite material; the glass fiber is elliptical in cross section and has a density of 2.2-2.66g/cm3(ii) a The filler is talcum powder with the particle size of 20-30 mu m, and the surface of the filler is coated with epoxy resin, so that the dispersibility of the filler in the base material can be improved; the compatilizer is maleic anhydride grafted polypropylene (PP-g-MAH); the heat-resistant agent is a phenol heat-resistant agent; the antioxidant is hindered phenol antioxidant.
The light low-odor polypropylene composite material is prepared by adopting the raw materials and carrying out the steps of conventional raw material mixing, double-screw machine melt extrusion, blank cooling granulation and the like, wherein the melting temperature is controlled at 180-220 ℃. At this temperature, the cyclohexanol volatilizes away from the polypropylene substrate; because cyclohexanol loaded in expanded perlite has stronger polarity, the influence on polypropylene is not large, but volatile organic matters in the mixed raw materials can be dissolved; when the polypropylene composite material is melted, cyclohexanol volatilizes under the action of high temperature and brings out dissolved organic matters, so that the quantity and smell of the volatile organic matters of the polypropylene composite material are reduced. Moreover, the cyclohexanol is loaded in the expanded perlite, so that unnecessary loss of cyclohexanol in a previous process can be reduced, and the carrier of the expanded perlite is also used for facilitating uniform dispersion of cyclohexanol.
Example 2
The invention provides a light low-odor polypropylene composite material which comprises 100 parts by mass of polypropylene resin, 15 parts by mass of polyurethane, 10 parts by mass of expanded perlite loaded with cyclohexanol, 12 parts by mass of glass fiber, 10 parts by mass of filler, 1 part by mass of compatilizer, 1.5 parts by mass of heat-resistant agent and 1 part by mass of antioxidant.
Wherein: the expanded perlite loaded with cyclohexanol is prepared by the following method: (1) placing the expanded perlite in a sealed container, and vacuumizing to 0.08 Mpa; (2) introducing cyclohexanol into a sealed container; absorbing cyclohexanol into the pores of the expanded perlite under the action of negative pressure, and then drying for later use; and controlling the weight gain of the expanded perlite after treatment to be 25 percent.
The light low-odor polypropylene composite material is prepared by adopting the raw materials and carrying out the steps of conventional raw material mixing, double-screw machine melt extrusion, blank cooling granulation and the like, wherein the melting temperature is controlled at 180-220 ℃.
Example 3
The invention provides a light low-odor polypropylene composite material, which consists of 100 parts by mass of polypropylene resin, 25 parts by mass of polyurethane, 16 parts by mass of expanded perlite loaded with cyclohexanol, 10 parts by mass of glass fiber, 25 parts by mass of filler, 4 parts by mass of compatilizer, 1 part by mass of heat-resistant agent and 1.5 parts by mass of antioxidant.
Wherein: the expanded perlite loaded with cyclohexanol is prepared by the following method: (1) placing the expanded perlite in a sealed container, and vacuumizing to 0.03 Mpa; (2) introducing cyclohexanol into a sealed container; absorbing cyclohexanol into the pores of the expanded perlite under the action of negative pressure, and then drying for later use; the weight of the expanded perlite after the treatment is controlled to be increased by 12 percent.
The light low-odor polypropylene composite material is prepared by adopting the raw materials and carrying out the steps of conventional raw material mixing, double-screw machine melt extrusion, blank cooling granulation and the like, wherein the melting temperature is controlled at 180-220 ℃.
Comparative example 1
This comparative example differs from example 1 in that: the composition does not contain expanded perlite, and only contains cyclohexanol.
The concrete composition is as follows: 100 parts of polypropylene resin, 20 parts of polyurethane, 2 parts of cyclohexanol, 15 parts of glass fiber, 15 parts of filler, 2 parts of compatilizer, 0.5 part of heat-resistant agent and 0.5 part of antioxidant.
Comparative example 2
This comparative example differs from example 1 in that: the composition does not contain cyclohexanol, and only contains expanded perlite.
The concrete composition is as follows: 100 parts of polypropylene resin, 20 parts of polyurethane, 10 parts of expanded perlite, 15 parts of glass fiber, 15 parts of filler, 2 parts of compatilizer, 0.5 part of heat-resistant agent and 0.5 part of antioxidant.
Comparative example 3
This comparative example differs from example 1 in that: the raw material contains expanded perlite and cyclohexanol, but the two are separated.
The concrete composition of the raw materials is as follows: 100 parts of polypropylene resin, 20 parts of polyurethane, 2 parts of cyclohexanol, 10 parts of expanded perlite, 15 parts of glass fiber, 15 parts of filler, 2 parts of compatilizer, 0.5 part of heat-resistant agent and 0.5 part of antioxidant.
And (3) performance testing:
the polypropylene composites provided in examples 1 to 3 and comparative examples 1 to 3 were injection molded on an injection molding machine to prepare specimens and tested for properties.
Organic compound volatility test: the material has an organic compound volatility measured according to ISO 6452, with a sample size of phi 80mm and a thickness of 2 mm.
And (3) odor test: the odor properties of the materials were tested according to the German public automobile company PV3900, with a sample mass of 40 to 60g and a container volume of 1 litre.
And (3) testing the density: reference standard: ISO 1183; and (3) testing conditions are as follows: and (5) normal temperature.
And (3) testing tensile strength: reference standard: ISO 527-2; and (3) testing conditions are as follows: the clamping distance is 50mm, and the speed is 50 mm/min.
And (3) testing the bending strength: reference standard: ISO 178; and (3) testing conditions are as follows: span 64mm, speed 14 mm/min.
Unnotched impact strength test: reference standard: ISO 179; and (3) testing conditions are as follows: the span is 62 mm.
Notched impact strength test: reference standard: ISO 179; and (3) testing conditions are as follows: span 62mm, notch depth 1/3D.
The detection results are as follows:
example 1:
volatilization of organic compounds: 30 microgram g-1And odor grade: grade 2.5, density: 0.85 g/cm-3And tensile strength: 55MPa, bending strength: 70Mpa, unnotched impact strength: continuous and notched impact strength: 12.5KJ · m-2。
Example 2:
volatilization of organic compounds: 30 microgram g-1And odor grade: grade 2.5, density: 0.9 g.cm-3And tensile strength: 53MPa, bending strength: 70Mpa, unnotched impact strength: continuous and notched impact strength: 13.5KJ · m-2。
Example 3:
volatilization of organic compounds: 38 microgram g-1And odor grade: grade 3.0, density: 0.8 g.cm-3And tensile strength: 50MPa, bending strength: 65MPa, unnotched impact strength: continuous and notched impact strength: 14KJ · m-2。
Comparative example 1:
volatilization of organic compounds: 45 microgram g-1And odor grade: grade 3.5, density: 1.08 g.cm-3And tensile strength: 59MPa, bending strength: 75Mpa, unnotched impact strength: continuous and notched impact strength: 14KJ · m-2。
Comparative example 2:
volatilization of organic compounds: 65 microgram g-1And odor grade: grade 4.0, density: 0.85 g/cm-3And tensile strength: 56Mpa, bending strength: 69MPa, unnotched impact strength: continuous and notched impact strength: 12.5KJ · m-2。
Comparative example 3:
volatilization of organic compounds: 43 microgram g-1And odor grade: grade 3.5, density: 0.83g cm-3And tensile strength: 54MPa, bending strength: 71MPa, unnotched impact strength: continuous and notched impact strength: 13KJ · m-2。
According to the detection result, the following can be found:
(1) the samples injection molded from the materials provided in examples 1-3 had lower density and lighter weight than the injection molded product obtained in comparative example 1; the addition of the expanded perlite is shown to lead the injection molding finished product of the polypropylene material to have the characteristic of light weight.
(2) The sample injection molded from the material provided in comparative example 2 has higher organic compound volatilization and odor grade than the injection molded product obtained in examples 1-3, because cyclohexanol can dissolve the volatile organic compounds with odor in the raw material and carry out the organic compounds when volatilizing at high temperature, thereby reducing the odor and organic volatilization of the polypropylene composite material and the injection molded product thereof.
(3) The material provided by example 1 was injection molded into a sample with less organic compound volatilization and lower odor rating than the finished injection molded products obtained in comparative examples 1 and 3; this is due to the absence of the load and protection of the expanded perlite, loss of cyclohexanol during the previous process, and its non-uniform dispersion in the polypropylene substrate.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. A light low-odor polypropylene composite material is characterized in that: comprises polypropylene resin, polyurethane, expanded perlite loaded with cyclohexanol and glass fiber; the expanded perlite loaded with cyclohexanol is prepared by the following method: firstly, placing expanded perlite in a sealed container and vacuumizing; then cyclohexanol is introduced into a sealed container; absorbing cyclohexanol into the pores of the expanded perlite under the action of negative pressure, and then drying for later use; the weight of the expanded perlite after the control treatment is increased by 12 to 25 percent.
2. The lightweight low odor polypropylene composite of claim 1, wherein: when the expanded perlite is placed in a sealed container and vacuumized, the vacuum degree is controlled to be 0.03-0.08 MPa.
3. The lightweight low odor polypropylene composite of claim 1, wherein: also comprises filler, compatilizer, heat-resistant agent and antioxidant.
4. The lightweight low odor polypropylene composite of claim 3, wherein: the heat-resistant polypropylene composite material comprises, by mass, 100 parts of polypropylene resin, 15-25 parts of polyurethane, 10-16 parts of expanded perlite loaded with cyclohexanol, 10-15 parts of glass fiber, 10-25 parts of filler, 1-4 parts of compatilizer, 0.5-1.5 parts of heat-resistant agent and 0.5-1.5 parts of antioxidant.
5. The lightweight low odor polypropylene composite of claim 4, wherein: the flow rate of the polypropylene resin under the temperature of 230 ℃ and the load of 2.16kg is 45-60 g/min; the polyurethane resin is polyether polyurethane elastomer.
6. The lightweight low odor polypropylene composite of claim 4, wherein: the glass fiber is a glass fiber with an oval cross section, and the density of the glass fiber is 2.2-2.66g/cm3(ii) a The filler is talcum powder with the particle size of 20-30 mu m.
7. The lightweight low odor polypropylene composite of claim 4, wherein: the compatilizer is maleic anhydride grafted polypropylene; the heat-resistant agent is a phenol heat-resistant agent; the antioxidant is hindered phenol antioxidant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010640721.4A CN111808362A (en) | 2020-07-06 | 2020-07-06 | Light low-odor polypropylene composite material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010640721.4A CN111808362A (en) | 2020-07-06 | 2020-07-06 | Light low-odor polypropylene composite material |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103739944A (en) * | 2013-12-09 | 2014-04-23 | 天津金发新材料有限公司 | Low-odour glass-fiber-enhanced polypropylene composite material and preparation method thereof |
| CN104725724A (en) * | 2015-03-24 | 2015-06-24 | 合肥创新轻质材料有限公司 | Smell removing master batch as well as preparation method and application thereof |
| CN107513211A (en) * | 2017-09-13 | 2017-12-26 | 北京航天试验技术研究所 | It is a kind of it is low distribute, low smell automobile using polypropylene composite material |
| CN109206752A (en) * | 2018-08-02 | 2019-01-15 | 武汉金发科技有限公司 | A kind of PP composite material and the preparation method and application thereof |
| CN110317398A (en) * | 2019-06-26 | 2019-10-11 | 苏州润佳工程塑料股份有限公司 | A kind of low odor polypropylene composite material and preparation method thereof |
| CN110698765A (en) * | 2019-11-14 | 2020-01-17 | 苏州润佳工程塑料股份有限公司 | Preparation method of low-odor foamed polypropylene material |
| CN110982173A (en) * | 2019-11-29 | 2020-04-10 | 苏州润佳工程塑料股份有限公司 | Preparation method of soft-touch polypropylene composite material |
-
2020
- 2020-07-06 CN CN202010640721.4A patent/CN111808362A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103739944A (en) * | 2013-12-09 | 2014-04-23 | 天津金发新材料有限公司 | Low-odour glass-fiber-enhanced polypropylene composite material and preparation method thereof |
| CN104725724A (en) * | 2015-03-24 | 2015-06-24 | 合肥创新轻质材料有限公司 | Smell removing master batch as well as preparation method and application thereof |
| CN107513211A (en) * | 2017-09-13 | 2017-12-26 | 北京航天试验技术研究所 | It is a kind of it is low distribute, low smell automobile using polypropylene composite material |
| CN109206752A (en) * | 2018-08-02 | 2019-01-15 | 武汉金发科技有限公司 | A kind of PP composite material and the preparation method and application thereof |
| CN110317398A (en) * | 2019-06-26 | 2019-10-11 | 苏州润佳工程塑料股份有限公司 | A kind of low odor polypropylene composite material and preparation method thereof |
| CN110698765A (en) * | 2019-11-14 | 2020-01-17 | 苏州润佳工程塑料股份有限公司 | Preparation method of low-odor foamed polypropylene material |
| CN110982173A (en) * | 2019-11-29 | 2020-04-10 | 苏州润佳工程塑料股份有限公司 | Preparation method of soft-touch polypropylene composite material |
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Application publication date: 20201023 |