CN113388202A - High-gloss modified PP material and preparation method thereof - Google Patents
High-gloss modified PP material and preparation method thereof Download PDFInfo
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- CN113388202A CN113388202A CN202110729005.8A CN202110729005A CN113388202A CN 113388202 A CN113388202 A CN 113388202A CN 202110729005 A CN202110729005 A CN 202110729005A CN 113388202 A CN113388202 A CN 113388202A
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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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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Abstract
The application relates to the technical field of modified plastics, and particularly discloses a high-gloss modified PP material and a preparation method thereof. The material is prepared from the following raw materials in parts by weight: 60-80 parts of PP; 30-40 parts of PMMA; 0.8-1.5 parts of a compatilizer; 0.5-0.7 part of antioxidant; 0.5-1 part of a dispersant; 0.5-0.6 part of light stabilizer; 1.2-1.8 parts of pearl powder; 0.3-0.6 part of fluorescent auxiliary agent; the dispersing agent is a compound composition of sodium methylene dinaphthalene sulfonate and ammonium polymethacrylate; the preparation method comprises the following steps: putting PP, PMMA and compatilizer into a blending machine, blending for 8min at the temperature of 170-180 ℃ at the rotating speed of 150-160r/min, putting the antioxidant, the dispersing agent, the light stabilizer, the pearl powder and the fluorescent auxiliary agent into the blending machine for 3-4 times, stirring and blending for 10min at the rotating speed of 240-250r/min, and performing extrusion granulation to obtain the modified PP material. The modified PP material can be used for automobile shells and household appliance shells and has the advantage of high gloss.
Description
Technical Field
The application relates to the technical field of modified plastics, in particular to a high-gloss modified PP material and a preparation method thereof.
Background
Polypropylene (PP) is a nontoxic and tasteless highly crystalline polymer with a regular structure and a density of only 0.91g/cm2The high-density light-weight polyurethane resin is one of the lightest-density engineering plastics and is widely applied to the fields of automobiles, household appliances and the like. Due to the surface glossiness of the polypropylene materialThe PP material has the problems of poor low-temperature impact resistance, easy aging, lower surface gloss than ABS, PMMA and PC materials and the like due to the influence of the molecular structure of the PP material, and limits the application of PP plastics in the field of the spraying-free materials.
Polymethyl methacrylate (PMMA) is a transparent material, the relative molecular weight is about 200 ten thousand, the molecular chain is very soft, the glossiness is high, and after PMMA and PP are mixed, the integral glossiness and hardness can be remarkably improved, however, PMMA and PP are incompatible phases, a system formed by simply blending PMMA and PP is unstable, and a dispersed phase can form different phase forms. The Chinese patent application No. 2017114686208 discloses a PP/PMMA alloy material, which uses modified talcum powder as a compatilizer to make the boundary between PP and PMMA become fuzzy and reduce the shrinkage rate of the material. However, the prepared composite material has a glossiness of only about 80, and the glossiness of the composite material used on automobile shells is insufficient, so that the glossiness of the composite material is difficult to highlight.
Disclosure of Invention
In order to obtain a PP/PMMA composite material with high glossiness, which can be applied to an automobile shell, the application provides a high-glossiness modified PP material and a preparation method thereof.
In a first aspect, the present application provides a high gloss modified PP material, which adopts the following technical scheme:
the high-gloss modified PP material is prepared from the following raw materials in parts by weight:
the dispersing agent is a compound composition of sodium methylene dinaphthalene sulfonate and ammonium polymethacrylate.
By adopting the technical scheme, the PP and the PMMA are mixed, and then the compatilizer is added, wherein the compatilizer can obscure the boundary of the PP and the PMMA, so that the PP and the PMMA are mutually blended, and the mixing stability and uniformity of the PP and PMMA blended phase are improved; after the antioxidant and the light stabilizer are added, the oxidation resistance and the light aging resistance of the material can be improved; the dispersing agent can improve the dispersion uniformity of the pearl powder and the fluorescent auxiliary agent in a blending system, and the fluorescent auxiliary agent can be attached to the pearl powder, so that the surface glossiness of the product is improved, and the fluorescent effect is not easy to occur at night due to the trace addition of the fluorescent auxiliary agent; the dispersing agent is formed by compounding and combining sodium methylene dinaphthalene sulfonate and ammonium polymethacrylate, can promote the fluorescent auxiliary agent to be attached to the pearl powder, can promote the dispersion of the pearl powder, and can reduce the occurrence of agglomeration and deposition.
Preferably, the compatilizer is an inorganic mineral with methacryloxy groups.
Preferably, the antioxidant is antioxidant 1010.
Preferably, the mixing ratio of the sodium methylene dinaphthalene sulfonate to the ammonium polymethacrylate in parts by weight is (0.3-0.6): (0.2-0.4).
By adopting the technical scheme, when the weight ratio of the sodium methylene dinaphthalene sulfonate to the ammonium polymethacrylate is (0.3-0.6): (0.2 to 0.4), the dispersing effect on the fluorescent auxiliary and the pearl powder is the best, and the surface gloss of the obtained product is the best.
Preferably, the light stabilizer is antioxidant 168.
Preferably, the mesh number of the pearl powder is 5000-10000 meshes.
Preferably, the fluorescent auxiliary agent is fluorescent powder, and the mesh number of the fluorescent powder is 7000-10000 meshes.
In a second aspect, the present application provides a preparation method of a high-gloss modified PP material, which adopts the following technical scheme:
a preparation method of a high-gloss modified PP material comprises the following steps: putting PP, PMMA and compatilizer into a blending machine, blending for 8min at the temperature of 170-180 ℃ at the rotating speed of 150-160r/min, putting the antioxidant, the dispersing agent, the light stabilizer, the pearl powder and the fluorescent auxiliary agent into the blending machine for 3-4 times, stirring and blending for 10min at the rotating speed of 240-250r/min, and performing extrusion granulation to obtain the modified PP material.
In summary, the present application has the following beneficial effects:
1. the polypropylene (PP) material is added with the pearl powder and a trace amount of fluorescent auxiliary agent, the fluorescent auxiliary agent can be attached to the pearl powder, the surface glossiness of a product is improved, and due to the trace amount of the fluorescent auxiliary agent, the fluorescent effect of the product is not easy to occur at night.
2. In the application, the dispersing agent is a compound composition of sodium methylene dinaphthalene sulfonate and ammonium polymethacrylate, and when the weight ratio of the sodium methylene dinaphthalene sulfonate to the ammonium polymethacrylate is (0.3-0.6): (0.2 to 0.4), the dispersing effect on the fluorescent auxiliary and the pearl powder is the best, and the surface gloss of the obtained product is the best.
Detailed Description
The present application will be described in further detail with reference to examples and comparative examples.
Examples
Examples 1 to 5
The raw materials of the high gloss modified PP materials in examples 1 to 5 in each weight part are shown in Table 1.
TABLE 1 EXAMPLES 1-5 the high gloss modified PP materials in each raw material weight part
In examples 1 to 5, the compatibilizing agent used was an inorganic mineral having a methacryloxy group; the antioxidant used is antioxidant 1010; the light stabilizer is antioxidant 168; the mesh number of the used pearl powder is 5000-; the used fluorescent auxiliary agent is fluorescent powder, and the mesh number of the fluorescent powder is 7000-10000 meshes.
In examples 1 to 5, the preparation method of the high gloss modified PP material includes the following steps: putting PP, PMMA and compatilizer into a blending machine, blending for 8min at the temperature of 170-180 ℃ at the rotating speed of 150-160r/min, putting the antioxidant, the dispersing agent, the light stabilizer, the pearl powder and the fluorescent auxiliary agent into the blending machine for 3-4 times, stirring and blending for 10min at the rotating speed of 240-250r/min, and performing extrusion granulation to obtain the modified PP material.
Comparative example
Comparative examples 1 to 3
The raw materials of the high gloss modified PP materials in the comparative examples 1 to 3 in each weight part are shown in Table 2.
TABLE 2 COMPARATIVE EXAMPLES 1-3 HIGH GLOSS MODIFIED PP MATERIAL WITH VARIABLE MATERIAL
In the present comparative examples 1 to 3, the compatibilizing agent used was an inorganic mineral having methacryloyloxy groups; the antioxidant used is antioxidant 1010; the light stabilizer is antioxidant 168; the mesh number of the used pearl powder is 5000-; the used fluorescent auxiliary agent is fluorescent powder, and the mesh number of the fluorescent powder is 7000-10000 meshes.
In comparative examples 1 to 3, the preparation method of the high gloss modified PP material comprises the following steps: putting PP, PMMA and compatilizer into a blending machine, blending for 8min at the temperature of 170-180 ℃ at the rotating speed of 150-160r/min, putting the antioxidant, the dispersing agent, the light stabilizer, the pearl powder and the fluorescent auxiliary agent into the blending machine for 3-4 times, stirring and blending for 10min at the rotating speed of 240-250r/min, and performing extrusion granulation to obtain the modified PP material.
Performance test
Detection method
The high gloss modified PP materials of examples 1 to 5 and comparative examples 1 to 3 were injection molded into test pieces with a length × width of 1m × 1m and a thickness of 3mm, the surface of the test piece was subjected to a gloss measurement using a general-purpose 60 ° specular gloss measurement apparatus, the test standard was ASTM D2457-13, 10 test points were uniformly selected on the surface of the test piece, the gloss was measured, the average gloss was calculated, and the test results are shown in table 3.
TABLE 3 measurement of surface gloss of high gloss modified PP materials in examples 1 to 5 and comparative examples 1 to 3
| Surface average gloss/(60% | |
| Example 1 | 94.47 |
| Example 2 | 94.49 |
| Example 3 | 94.50 |
| Example 4 | 92.62 |
| Example 5 | 92.96 |
| Comparative example 1 | 87.35 |
| Comparative example 2 | 91.64 |
| Comparative example 3 | 91.89 |
In combination with examples 1-5, and in combination with Table 3, it can be seen that the high gloss modified PP material of the present application has a high surface gloss.
Combining examples 1-3 and examples 4-5, and table 3, it can be seen that when the weight ratio of sodium methylene dinaphthalene sulfonate to ammonium polymethacrylate in the dispersant is not (0.3-0.6): (0.2-0.4), too much of either sodium methylenedinaphthalene sulfonate or ammonium polymethacrylate can result in uneven dispersion of the fluorescent auxiliary and reduced surface gloss.
Combining examples 1-3 and comparative example 1, and combining table 3, it can be seen that the addition of the fluorescence assistant to the raw materials can significantly improve the glossiness of the surface of the product.
It can be seen from the combination of examples 1 to 3 and comparative examples 1 to 2, and from Table 3 that when the dispersant is used singly with either of sodium methylenedinaphthalene sulfonate and ammonium polymethacrylate, the dispersing performance of the fluorescent aid and the pearl powder is lowered, and the glossiness of the surface of the article is affected.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. The high-gloss modified PP material is characterized by being prepared from the following raw materials in parts by weight:
60-80 parts of PP;
30-40 parts of PMMA;
0.8-1.5 parts of a compatilizer;
0.5-0.7 part of antioxidant;
0.5-1 part of a dispersant;
0.5-0.6 part of light stabilizer;
1.2-1.8 parts of pearl powder;
0.3-0.6 part of fluorescent auxiliary agent;
the dispersing agent is a compound composition of sodium methylene dinaphthalene sulfonate and ammonium polymethacrylate.
2. The high gloss modified PP material of claim 1, wherein: the compatilizer is an inorganic mineral with methacryloxy.
3. The high gloss modified PP material of claim 1, wherein: the antioxidant is antioxidant 1010.
4. The high gloss modified PP material of claim 1, wherein: the mixing ratio of the methylene dinaphthalene sodium sulfonate to the ammonium polymethacrylate in parts by weight is (0.3-0.6): (0.2-0.4).
5. The high gloss modified PP material of claim 1, wherein: the light stabilizer is an antioxidant 168.
6. The high gloss modified PP material of claim 1, wherein: the mesh number of the pearl powder is 5000-10000 meshes.
7. The high gloss modified PP material of claim 1, wherein: the fluorescent auxiliary agent is fluorescent powder, and the mesh number of the fluorescent powder is 7000-10000 meshes.
8. A process for the preparation of a high gloss modified PP material according to any one of claims 1 to 7, comprising the steps of: putting PP, PMMA and compatilizer into a blending machine, blending for 8min at the temperature of 170-180 ℃ at the rotating speed of 150-160r/min, putting the antioxidant, the dispersing agent, the light stabilizer, the pearl powder and the fluorescent auxiliary agent into the blending machine for 3-4 times, stirring and blending for 10min at the rotating speed of 240-250r/min, and performing extrusion granulation to obtain the modified PP material.
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| CN102942742A (en) * | 2012-12-04 | 2013-02-27 | 上海日之升新技术发展有限公司 | Spray coating-free propene polymer (PP) material with high gloss and metal or pearly-lustre flashing effect and preparation method thereof |
| CN103059412A (en) * | 2013-01-16 | 2013-04-24 | 合肥杰事杰新材料股份有限公司 | Polypropylene composite material with low after-shrinkage and high gloss and preparation method thereof |
| CN103694564A (en) * | 2013-12-27 | 2014-04-02 | 安徽科聚新材料有限公司 | PP/PMMA (polypropylene/polymethyl methacrylate) alloy material and preparation method thereof |
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