CN109749015B - Polyphenylene sulfide polyamide resin composition and preparation method thereof - Google Patents
Polyphenylene sulfide polyamide resin composition and preparation method thereof Download PDFInfo
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Abstract
The invention provides a polyphenylene sulfide polyamide resin composition and a preparation method thereof, wherein the polyphenylene sulfide polyamide resin composition comprises the following components in parts by weight: 50-75 parts of polyamide; 10-20 parts of polyphenylene sulfide; 10-20 parts of functionalized polyphenylene sulfide; 3-10 parts of a toughening agent. The functionalized polyphenylene sulfide has a composition comprising polyphenylene sulfide, polystyrene, and maleic anhydride. The preparation method of the polyphenylene sulfide polyamide resin composition comprises the following steps of mixing polyamide, polyphenylene sulfide, functionalized polyphenylene sulfide and a toughening agent according to the weight part ratio, uniformly mixing the materials by a high-speed mixer, feeding the uniformly mixed materials into a double-screw extruder from a main feed, and carrying out melt extrusion, cooling and grain cutting to obtain the polyphenylene sulfide polyamide resin composition. The polyamide polyphenylene sulfide resin composition prepared by the invention has excellent comprehensive performance, especially excellent impact performance, and the preparation method is simple and feasible.
Description
Technical Field
The invention relates to the field of high polymer material alloys, in particular to a polyphenylene sulfide polyamide resin composition and a preparation method thereof.
Background
Polyphenylene sulfide resin (hereinafter referred to as "PPS") is a special engineering plastic having excellent high-temperature resistance, flame resistance and chemical resistance, and is used in various electronic and electrical parts, automobile parts and mechanical parts; however, PPS has disadvantages such as poor toughness, low elongation, and poor processability. Polyamides are often used to prepare resin compositions with polyphenylene sulfides due to their close solubility parameters. The patent CN101061182A discloses a polyphenylene sulfide polyamide nano alloy with polyphenylene sulfide resin as sea phase, polyamide resin as island phase, and number average dispersed particle size of polyamide resin less than 500nm, wherein 0.1-10 parts by weight of compound with more than one group selected from epoxy group, amino group, and isonitrile ester group is added as compatilizer. However, this patent does not disclose impact strength; the patent CN101619168A discloses a resin composition of PPS, PA66, GF and a compatibilizer, wherein the compatibilizer is at least one of a chemical compound having at least one group of epoxy group, amino group, isocyanate group and olefin graft compound in an amount of 5.0 to 25.0%, but the impact strength is not more than 100J/m.
Disclosure of Invention
In view of the defects in the prior art, the present invention aims to provide a polyphenylene sulfide polyamide resin composition and a preparation method thereof, and further provides a compatibilized polyphenylene sulfide polyamide resin composition capable of significantly improving notched impact strength and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a functionalized polyphenylene sulfide, comprising the following components in parts by weight:
88-98 parts of polyphenylene sulfide;
1-10 parts of polystyrene;
0.1-2 parts of Maleic Anhydride (MAH).
Among them, the addition of polystyrene contributes to the improvement of the grafting ratio of maleic anhydride.
Preferably, the polyphenylene sulfide has a melt index of 100-.
In a second aspect, the present invention provides a method for preparing the functionalized polyphenylene sulfide, comprising the following steps: the method comprises the steps of premixing polyphenylene sulfide, polystyrene and maleic anhydride at normal temperature, and then adding the premixed polyphenylene sulfide, polystyrene and maleic anhydride into a double-screw extruder to perform melt grafting reaction, wherein the extrusion temperature is set to be 290-310 ℃, and the rotating speed of a screw is set to be 100-200 revolutions per minute, so that the functionalized polyphenylene sulfide is obtained.
In a third aspect, the present invention provides a polyphenylene sulfide polyamide resin composition containing the functionalized polyphenylene sulfide, which comprises the following components in parts by weight:
preferably, the polyphenylene sulfide of the polyphenylene sulfide and the functionalized polyphenylene sulfide have a melt index of 1000g/10min at 316 ℃ and under a 5kg load.
Preferably, the polyamide comprises one or both of polyamide 6, polyamide 66.
More preferably, the polyamide is polyamide 6, having an intrinsic viscosity of 2.0 to 3.0 dl/g.
Preferably, the toughening agent is a functionalized polyolefin elastomer.
Preferably, the toughening agent comprises one or two of EPDM-g-MAH and POE-g-MAH.
In a fourth aspect, the present invention provides a method for preparing a polyphenylene sulfide polyamide resin composition, comprising the steps of:
uniformly mixing 50-75 parts of polyamide, 10-20 parts of polyphenylene sulfide, 10-20 parts of functionalized polyphenylene sulfide and 3-10 parts of toughening agent, and adding the mixture into a double-screw extruder, wherein the temperature is set to be 260-280 ℃, and the rotating speed of a screw is set to be 300-500 rpm, so as to obtain the polyphenylene sulfide polyamide resin composition.
Compared with the prior art, the invention has the following beneficial effects:
aiming at the defects of poor impact toughness and poor processability of polyphenylene sulfide, polyamide is utilized to modify polyphenylene sulfide; however, the impact toughness of the polyphenylene sulfide polyamide resin composition obtained is also poor. The invention prepares the polyphenylene sulfide polyamide resin composition with excellent comprehensive performance, especially excellent notch impact performance by adjusting the proportion of the polyphenylene sulfide to the polyamide resin, the proportion of the polyphenylene sulfide resin to the functionalized polyphenylene sulfide resin composition and compounding the functionalized polyolefin elastomer.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The raw materials used in this specification are, unless otherwise specified, parts by weight.
The following materials were used in the examples:
polyphenylene sulfide: zhejiang Xinhe specialty materials Co., Ltd, with a mark of 1130C, at 316 ℃ and a melt flow rate of 250g/10min under a load of 5 kg;
polyamide: the Guangzhou Xinhui Mayda Chinlon GmbH, the brand is M2500, and the intrinsic viscosity is 2.5 dl/g;
functionalized polyolefin elastomer: EPDM-g-MAH, available from Shanghai-Nisshinbo Co., Ltd;
example 1
This example provides a functionalized polyphenylene sulfide prepared as follows:
uniformly mixing 95 parts of polyphenylene sulfide, 4 parts of polystyrene and 1 part of maleic anhydride at normal temperature, adding the mixture into a double-screw extruder to perform melt grafting reaction, setting the temperature from a melting section to a metering section in the double-screw extruder to be 300 ℃, and setting the screw rotation speed to be 150 revolutions per minute to obtain the functionalized polyphenylene sulfide.
Example 2
This example provides a functionalized polyphenylene sulfide prepared as follows:
uniformly mixing 88 parts of polyphenylene sulfide, 10 parts of polystyrene and 2 parts of maleic anhydride at normal temperature, adding the mixture into a double-screw extruder to perform melt grafting reaction, setting the temperature from a melting section to a metering section in the double-screw extruder to 290 ℃, and setting the rotating speed of a screw to 100 revolutions per minute to obtain the functionalized polyphenylene sulfide.
Example 3
This example provides a functionalized polyphenylene sulfide prepared as follows:
98 parts of polyphenylene sulfide, 1 part of polystyrene and 0.1 part of maleic anhydride are uniformly mixed at normal temperature, and then the mixture is added into a double-screw extruder to carry out melt grafting reaction, the temperature from a melting section to a metering section in the double-screw extruder is set to be 310 ℃, and the rotating speed of a screw is 200 revolutions per minute, so that the functionalized polyphenylene sulfide is obtained.
Examples 4 to 7
Examples 4 to 7 respectively provide a polyphenylene sulfide polyamide resin composition, which is prepared by the following method:
the polyamide, polyphenylene sulfide, functionalized polyphenylene sulfide (prepared in example 1), EPDM-g-MAH were mixed uniformly according to the formulation (weight ratio) in Table 1 and then fed into a twin-screw extruder, and the weight ratio of functionalized polyphenylene sulfide to non-functionalized polyphenylene sulfide was controlled; the processing temperature from the melting section to the metering section was set at 270 ℃ and the screw rotation speed was set at 400 rpm, to obtain a polyphenylene sulfide polyamide resin composition.
Comparative example 1
This comparative example provides a polyphenylene sulfide polyamide resin composition, which was prepared in substantially the same manner as in example 4, except that: the resin composition had 40 parts of polyphenylene sulfide, which was not functionalized.
Comparative example 2
This comparative example provides a polyphenylene sulfide polyamide resin composition, which was prepared in substantially the same manner as in example 5, except that: the resin composition had 25 parts polyphenylene sulfide, which was not functionalized.
Comparative example 3
This comparative example provides a polyphenylene sulfide polyamide resin composition, which was prepared in substantially the same manner as in example 4, except that: in this comparative example, 30 parts of polyphenylene sulfide and 10 parts of functionalized polyphenylene sulfide.
Comparative example 4
This comparative example provides a polyphenylene sulfide polyamide resin composition, which was prepared in substantially the same manner as in example 4, except that: in this comparative example, 10 parts of polyphenylene sulfide and 30 parts of functionalized polyphenylene sulfide.
Comparative example 5
This comparative example provides a polyphenylene sulfide polyamide resin composition, which was prepared in substantially the same manner as in example 4, except that: in this comparative example, the functionalized polyphenylene sulfide includes 95 parts polyphenylene sulfide, 1 part polystyrene, and 4 parts maleic anhydride.
Comparative example 6
This comparative example provides a polyphenylene sulfide polyamide resin composition, which was prepared in substantially the same manner as in example 4, except that: in this comparative example, 99 parts polyphenylene sulfide and 1 part maleic anhydride were used as the functionalized polyphenylene sulfide.
Comparative example 7
This comparative example provides a polyphenylene sulfide polyamide resin composition, which was prepared in substantially the same manner as in example 4, except that: in this comparative example, polystyrene grafted maleic anhydride was used in place of the functionalized polyphenylene sulfide.
Performance testing
The resin compositions prepared in examples 4 to 7 and comparative examples 1 to 6 were injection-molded after vacuum-drying at 100 ℃ for 8 hours, and injection-molded specimens were tested for their properties after being left in an environment of 23 ℃ and 50% relative humidity for 24 hours.
The test follows the following test method:
tensile strength and elongation were determined based on the test procedure of ASTM D-638, tensile speed 50 mm/min;
flexural strength and flexural modulus were determined based on the test procedure of ASTM D-790, load speed 3 mm/min;
izod (1/8') notched impact strength was determined based on the test procedure of ASTM D-256;
heat distortion temperature was determined based on the test procedure of ASTM D-648.
The results of the physical property tests of the resin compositions prepared in examples 4 to 7 and comparative examples 1 to 6 are shown in Table 1.
TABLE 1
As can be seen from the comparison of the data in table 1, by controlling the ratio of the polyphenylene sulfide resin to the functionalized polyphenylene sulfide resin, the compatibility between the polyamide and the polyphenylene sulfide resin can be improved, and the polyphenylene sulfide polyamide resin composition with significantly improved impact strength can be obtained. In the resin compositions of comparative examples 1 and 2, the mixing ratio of polyamide and polyphenylene sulfide was identical to that of examples 4 and 5, respectively, except that the ratio of polyphenylene sulfide to functionalized polyphenylene sulfide was controlled in examples 4 and 5, whereas the resin compositions of comparative examples 1 and 2, to which no functionalized polyphenylene sulfide was added, were inferior in impact properties. Comparing example 4 with comparative example 6, it can be seen that the functionalized polyphenylene sulfide of comparative example 6 does not incorporate the third component polystyrene, while the functionalized polyphenylene sulfide of example 4 incorporates the third component polystyrene, and the impact strength of example 4 is higher than that of comparative example 6, which may be the reason for further improving the grafting ratio by incorporating the third component polystyrene. It can be seen that the introduction of the third component of polystyrene to prepare functionalized polyphenylene sulfide, the control of the ratio of polyphenylene sulfide to functionalized polyphenylene sulfide resin is very critical in the preparation process of a polyphenylene sulfide polyamide resin composition of the present invention. Meanwhile, it can be seen from comparison of example 4 and comparative example 7 that the polyphenylene sulfide polyamide resin composition prepared in comparative example 7 has poor impact properties and tensile strength due to poor interfacial compatibility between polyamide and polyphenylene sulfide without introduction of functionalized polyphenylene sulfide. Comparing example 4 with comparative example 8, it is seen that when the polyphenylene sulfide is not in proper proportion to the polyamide resin, the impact properties of the composition are poor and the tensile strength is poor.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. The functionalized polyphenylene sulfide is characterized by comprising the following components in parts by weight:
88-98 parts of polyphenylene sulfide;
1-10 parts of polystyrene;
0.1-2 parts of maleic anhydride;
the functionalized polyphenylene sulfide is prepared by a method comprising the following steps:
the method comprises the steps of premixing polyphenylene sulfide, polystyrene and maleic anhydride at normal temperature, and then adding the premixed polyphenylene sulfide, polystyrene and maleic anhydride into a double-screw extruder to perform melt grafting reaction, wherein the extrusion temperature is set to be 290-310 ℃, and the rotating speed of a screw is set to be 100-200 revolutions per minute, so that the functionalized polyphenylene sulfide is obtained.
2. The functionalized polyphenylene sulfide of claim 1, wherein the polyphenylene sulfide has a melt index of 100-.
3. A polyphenylene sulfide polyamide resin composition comprising the functionalized polyphenylene sulfide of claim 1, comprising the following components in parts by weight:
4. the polyphenylene sulfide polyamide resin composition as defined in claim 3, wherein the polyphenylene sulfide has a melt index of 100-1000g/10min at 316 ℃ under a 5kg load.
5. The polyphenylene sulfide polyamide resin composition of claim 3, wherein the polyamide comprises one or both of polyamide 6 and polyamide 66.
6. The polyphenylene sulfide polyamide resin composition according to claim 3, wherein the intrinsic viscosity of the polyamide is 2.0 to 3.0 dl/g.
7. The polyphenylene sulfide polyamide resin composition of claim 3, wherein the toughening agent is a functionalized polyolefin elastomer.
8. The polyphenylene sulfide polyamide resin composition of claim 3, wherein the toughening agent comprises one or both of EPDM-g-MAH and POE-g-MAH.
9. A method for preparing the polyphenylene sulfide polyamide resin composition according to any one of claims 3 to 8, comprising the steps of:
uniformly mixing 50-75 parts of polyamide, 10-20 parts of polyphenylene sulfide, 10-20 parts of functionalized polyphenylene sulfide and 3-10 parts of toughening agent, and adding the mixture into a double-screw extruder, wherein the temperature is set to be 260-280 ℃, and the rotating speed of a screw is set to be 300-500 rpm, so as to obtain the polyphenylene sulfide polyamide resin composition.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103450684A (en) * | 2012-05-31 | 2013-12-18 | 上海杰事杰新材料(集团)股份有限公司 | High-performance polyphenylene sulfide laminated composite plate material and preparation method thereof |
| CN103755881A (en) * | 2014-01-08 | 2014-04-30 | 合肥杰事杰新材料股份有限公司 | Compatibilizer of polyphenylene sulfide and polyamide, polyphenylene sulfide/polyamide composite material containing such compatibilizer and preparation method of composite material |
| CN104693801A (en) * | 2013-12-10 | 2015-06-10 | 合肥杰事杰新材料股份有限公司 | Wear-resisting anti-electrostatic polyphenylene sulfide/semi-aromatic high-temperature-resistant nylon composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103450684A (en) * | 2012-05-31 | 2013-12-18 | 上海杰事杰新材料(集团)股份有限公司 | High-performance polyphenylene sulfide laminated composite plate material and preparation method thereof |
| CN104693801A (en) * | 2013-12-10 | 2015-06-10 | 合肥杰事杰新材料股份有限公司 | Wear-resisting anti-electrostatic polyphenylene sulfide/semi-aromatic high-temperature-resistant nylon composite material and preparation method thereof |
| CN103755881A (en) * | 2014-01-08 | 2014-04-30 | 合肥杰事杰新材料股份有限公司 | Compatibilizer of polyphenylene sulfide and polyamide, polyphenylene sulfide/polyamide composite material containing such compatibilizer and preparation method of composite material |
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