Polymer alloy material and method for preparing the same

Abstract

The application discloses a polymer alloy material and a preparation method thereof, and the polymer alloy material is prepared from the following components in parts by weight: 20-30 parts of copolymerized polypropylene, 5-10 parts of salin resin, 55-65 parts of PMMA resin, 5-10 parts of EEA resin, 0.5 part of antioxidant and 0.5 part of additive. The synergistic promotion of the salin resin and the EEA resin can effectively improve the toughness and wear resistance of the PMMA base material; in particular, the prepared material has excellent low-temperature impact toughness. In addition, the salin resin and the EEA resin can effectively enhance the interfacial compatibility of various materials in the formula, so that the overall performance of the material is excellent. The PMMA / PP / salin resin / EEA resin used in the application are all raw materials with high transparency, so that the final polymer alloy material has high light transmittance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of modified materials, in particular to a polymer alloy material and a preparation method thereof. BACKGROUND

[0002] Polymer alloy technology, which belongs to a kind of plastic composite material, is to combine the physical and chemical interaction of two or more polymers to achieve new performance and performance level that single polymer cannot achieve, and also to make up for the natural defects of single material. In actual operation, the key problem of polymer alloy technology is the compatibility of each component polymer, that is, the interface problem of different component polymers in microphase.

[0003] The sarin ion resin is a copolymer made by partially or completely neutralizing the high-pressure free radical polymerization of ethylene-methacrylic acid copolymer. The acid content in the ion resin is about 6% (mole), and the acid is neutralized by sodium, potassium, magnesium or zinc compounds. The material has excellent low-temperature impact toughness and chemical resistance, and because of the existence of ionic bond in the molecule, the sarin resin has excellent transparency, and also has higher strength, oil resistance and adhesion to materials than low-density polyethylene. SUMMARY

[0004] The purpose of the present application is to provide a polymer alloy material and a preparation method thereof to solve the problems in the prior art.

[0005] The purpose of the present application is achieved by the following technical scheme:

[0006] A polymer alloy material is prepared from the following components by weight parts:

[0007]

[0008] Further scheme, the auxiliary agent includes lubricant, white oil and light stabilizer; the lubricant is ethylene bis-stearamide (EBS), and the light stabilizer is light stabilizer-V703; the mass ratio of ethylene bis-stearamide, white oil and light stabilizer is 1:2:2.

[0009] Further scheme, the copolymerized polypropylene is random copolymerized polypropylene; the sarin resin is sodium ion ionomer; the PMMA is a medium viscosity polymethyl methacrylate material; the EEA resin is ethylene-ethyl acrylate-maleic anhydride terpolymer, wherein the ethyl acrylate content is 25-32%, and the maleic anhydride content is 1-1.5%.

[0010] Further, the antioxidant is at least three of tetra[β-(3,5-di-tert-butyl-4- hydroxyphenyl)propionic acid]pentaerythritol ester (antioxidant 1010), n-octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate (antioxidant 1076), tris-(2,4-di-tert-butylphenyl) phosphite (antioxidant 168), dilauryl thiodipropionate (antioxidant DSTDP).

[0011] The application also provides a preparation method of the polymer alloy material, comprising the following steps:

[0012] The copolymerized polypropylene 20-30 parts, the salin resin 5-10 parts, the PMMA resin 55-65 parts, the EEA resin 5-10 parts, the antioxidant 0.5 parts and the auxiliary agent 0.5 parts are uniformly mixed to obtain a mixture; then the mixture is added into a double screw extruder to be mixed and extruded, and the final polymer alloy material is obtained after cooling and granulation.

[0013] Compared with the prior art, the application has the following advantages:

[0014] The polymer alloy material prepared by the application has high compatibility and excellent comprehensive performance by using high-transparency raw materials and multiple interface auxiliary agents.

[0015] The material of the application has the following advantages:

[0016] (1) The PMMA / PP / salin resin / EEA resin used in the application are all high-transparency raw materials, so the final polymer alloy material has high light transmittance.

[0017] (2) The salin resin and the EEA resin used in the application both have high toughness and ductility, and the synergistic effect of the two materials can effectively improve the toughness and wear resistance of the PMMA base material; in particular, the prepared material has excellent low-temperature impact toughness.

[0018] (3) The salin resin and the EEA resin used in the application can effectively enhance the interface compatibility of each material in the formula, so that the overall performance of the material is excellent. DETAILED DESCRIPTION

[0019] The application will be further described in connection with the following examples so that those skilled in the art can better understand the application and implement it, but the examples are not intended to limit the application.

[0020] The model numbers and suppliers of the reagents used in the examples are as follows:

[0021] The copolymerized polypropylene used in the examples is M800E, which is commercially available from Shanghai Petrochemical Co., Ltd. of China;

[0022] The sarin resin used in the examples is EM PC-2000, which is commercially available from DuPont of the United States;

[0023] The PMMA used in the examples is CM-207, which is commercially available from Chi Mei Corporation of Taiwan, China;

[0024] The EEA resin used in the examples is EEA 4700, which is commercially available from SK Global Chemicals;

[0025] The antioxidant is a mixture of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid n-octadecyl ester (antioxidant 1076), tris-(2,4-di-tert-butylphenyl) phosphite (antioxidant 168) and dilauryl thiodipropionate (antioxidant DSTDP) in a mass ratio of 2:2:1; the antioxidant 1076, the antioxidant 168 and the antioxidant DSTDP are all commercially available from BASF;

[0026] The auxiliary used in the following examples and comparative examples is a mixture of a lubricant EBS, white oil and calcium stearate in a mass ratio of 2:2:1, which are all commercially available.

[0027] The above reagents are only used to illustrate the sources and compositions of the reagents used in the experiments of the application, so as to fully disclose the application, and do not mean that other similar reagents or reagents provided by other suppliers cannot be used to implement the application.

[0028] Example 1

[0029] The copolymerized polypropylene 20 parts, the sarin resin 5 parts, the PMMA resin 65 parts, the EEA resin 10 parts, the antioxidant 0.5 part and the auxiliary 0.5 part are added into a high-speed mixer and mixed for 5 min; then the uniformly mixed materials are added into a twin-screw extruder and subjected to mixing and extrusion, and the final polymer alloy material is obtained after cooling and pelletizing; the extrusion temperatures of the respective extrusion zones in the twin-screw extruder are 185℃, 190℃, 200℃, 210℃, 210℃, 210℃, 210℃, 210℃, 210℃ and 230℃, respectively. The test results are shown in Table 1.

[0030] Example 2

[0031] Copolymerized polypropylene 25 parts, sarin resin 7 parts, PMMA resin 60 parts, EEA resin 8 parts, antioxidant 0.5 parts, auxiliary 0.5 parts are added into a high-speed mixer and mixed for 10 minutes; then the uniformly mixed material is added into a double-screw extruder for mixing, extrusion, cooling and granulation to obtain the final polymer alloy material; the extrusion temperatures of each extrusion section in the double-screw extruder are 180℃, 185℃, 195℃, 205℃, 205℃, 205℃, 205℃, 205℃, 205℃, 225℃. The test results are shown in Table 1

[0032] Example 3

[0033] Copolymerized polypropylene 30 parts, sarin resin 10 parts, PMMA resin 55 parts, EEA resin 5 parts, antioxidant 0.5 parts, auxiliary 0.5 parts are added into a high-speed mixer and mixed for 15 minutes; then the uniformly mixed material is added into a double-screw extruder for mixing, extrusion, cooling and granulation to obtain the final polymer alloy material; the extrusion temperatures of each extrusion section in the double-screw extruder are 175℃, 180℃, 190℃, 200℃, 200℃, 200℃, 200℃, 200℃, 200℃, 220℃. The test results are shown in Table 1

[0034] Table 1 Test results

[0035]

[0036] Note: The conditions of the above tests and the size of the test bars are as follows:

[0037] Tensile strength test: 1A type molded sample, tensile speed 50 mm / min;

[0038] Bending strength and bending modulus: sample size 100 mm*10 mm*4 mm, experimental speed: 2 mm / min;

[0039] Izod notched impact strength: A type molded notch, sample size 100 mm*10 mm*4 mm;

[0040] Transmittance test: haze method, sample size 50 mm*50 mm*0.17 mm;

[0041] Comparative Example 1

[0042] Copolymerized polypropylene 25 parts, PMMA resin 60 parts, EEA resin 15 parts, antioxidant 0.5 parts, additive 0.5 parts are added to a high-speed mixer and mixed for 10 minutes; then the uniformly mixed material is added to a twin-screw extruder for mixing and extrusion, and after cooling and granulation, the final polymer alloy material is obtained; the extrusion temperatures of each extrusion interval in the twin-screw extruder are 180℃, 185℃, 195℃, 205℃, 205℃, 205℃, 205℃, 205℃, 205℃, 225℃. The test results are shown in Table 2

[0043] Comparative Example 2

[0044] Copolymerized polypropylene 25 parts, PMMA resin 60 parts, EEA resin 15 parts, antioxidant 0.5 parts, additive 0.5 parts are added to a high-speed mixer and mixed for 10 minutes; then the uniformly mixed material is added to a twin-screw extruder for mixing and extrusion, and after cooling and granulation, the final polymer alloy material is obtained; the extrusion temperatures of each extrusion interval in the twin-screw extruder are 180℃, 185℃, 195℃, 205℃, 205℃, 205℃, 205℃, 205℃, 205℃, 225℃. The test results are shown in Table 2

[0045] Comparative Example 3

[0046] Copolymerized polypropylene 25 parts, PMMA resin 60 parts, EEA resin 15 parts, antioxidant 0.5 parts, additive 0.5 parts are added to a high-speed mixer and mixed for 10 minutes; then the uniformly mixed material is added to a twin-screw extruder for mixing and extrusion, and after cooling and granulation, the final polymer alloy material is obtained; the extrusion temperatures of each extrusion interval in the twin-screw extruder are 180℃, 185℃, 195℃, 205℃, 205℃, 205℃, 205℃, 205℃, 205℃, 225℃. The test results are shown in Table 2

[0047] Table 2 Test results

[0048]

[0049] As can be seen from the data in Table 1 and Table 2, the comprehensive mechanical properties and light transmittance of the composite material toughened and compatibilized by the combination of salin resin and EEA are much better than those of the material added with single salin resin or single EEA, among which the salin resin has a great influence on the toughness of the material, and the addition of EEA has a significant effect on the interface of the material. The addition of copolymerized polypropylene helps to balance the ductility of PMMA material and reduces the cost of the material. In addition, as can be seen from the data in Comparative Example 2, although the salin resin has excellent low-temperature impact toughness, if EEA is not added to the material and only single salin resin is added, the low-temperature impact toughness of the final product will not be further improved with the increase of the amount of salin resin.

[0050] The foregoing description of the embodiments has been presented for the purpose of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form disclosed. Modifications and variations are possible in light of the above teachings or can be acquired from practice of the application. As well, the application has been described above with the aid of functional building blocks illustrating the principles of operation at a conceptual level. These building blocks have been recognized to be more functional than structural. The actual implementation can always depend on the specific application and design restrictions and, therefore, should not be interpreted as a critical or essential block or function that the application is organized around. The applications can be implemented in hardware, software, firmware, or a combination thereof.

Claims

1. A polymeric alloy material, characterized by: It is prepared from the following components in parts by weight: 20-30 parts of copolymerized polypropylene 5-10 parts of sarin resin, 55-65 parts of PMMA resin 5-10 parts of EEA resin 0.5 parts antioxidant, 0.5 parts of auxiliary agent; The EEA resin is an ethylene-ethyl acrylate-maleic anhydride terpolymer, wherein the ethyl acrylate content is 25-32% and the maleic anhydride content is 1-1.5%. The additives are a mixture of lubricant EBS, white oil, and calcium stearate in a mass ratio of 2:2:

1.

2. The polymeric alloy material of claim 1, wherein: The copolymer polypropylene is a random copolymer polypropylene.

3. The polymeric alloy material of claim 1, wherein: The sarin resin is a sodium ion polymer.

4. The polymeric alloy material of claim 1, wherein: The PMMA is a medium-viscosity polymethyl methacrylate material.

5. The polymer alloy material according to claim 1, characterized in that: The antioxidant is at least three of the following: pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], octadecyl β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, tris-(2,4-di-tert-butylphenyl) phosphite, and dioctadecyl thiodipropionate.

6. The method for preparing the polymer alloy material according to any one of claims 1-5, characterized in that: Includes the following steps: Mix 20-30 parts of copolymer polypropylene, 5-10 parts of sarin resin, 55-65 parts of PMMA resin, 5-10 parts of EEA resin, 0.5 parts of antioxidant, and 0.5 parts of additives evenly to obtain a mixture; then add the mixture to a twin-screw extruder for kneading, extrusion, cooling and pelletizing to obtain the final polymer alloy material.

7. The method for preparing the polymer alloy material according to claim 6, characterized in that: The extrusion temperatures of each extrusion zone in the twin-screw extruder are 175-185℃, 180-190℃, 190-200℃, 200-210℃, 200-210℃, 200-210℃, 200-210℃, 200-210℃, and 220-230℃, respectively.

Images