CN113150550B

CN113150550B - High-rigidity high-temperature-resistant PPS modified material and preparation method thereof

Info

Publication number: CN113150550B
Application number: CN202110428193.0A
Authority: CN
Inventors: 苏健新; 郭丽
Original assignee: Shenzhen Gk Plastics Co ltd
Current assignee: Shenzhen Gk Plastics Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2022-08-16
Anticipated expiration: 2041-04-21
Also published as: CN113150550A

Abstract

The application relates to the field of polyphenylene sulfide materials, and particularly discloses a high-rigidity high-temperature-resistant PPS modified material and a preparation method thereof. The PPS modified material with high rigidity and high temperature resistance comprises the following raw materials in parts by weight: 30-40 parts of PPS; 22-29 parts of glass fiber; 1.2-2.2 parts of polyvinylidene fluoride; 1.7-3.2 parts of maleic anhydride grafted polymer; 5-7.5 parts of an inorganic filler; 1-2 parts of an antioxidant. The preparation method comprises the following steps: stirring and mixing PPS, glass fiber, polyvinylidene fluoride, maleic anhydride grafted polymer, inorganic filler and antioxidant to obtain a mixture; and melting and extruding the mixture for molding, cooling and dicing the extruded material to obtain the high-rigidity high-temperature-resistant PPS modified material. The PPS modified material with high rigidity and high temperature resistance has the advantage of improving the rigidity of the PPS material.

Description

High-rigidity high-temperature-resistant PPS modified material and preparation method thereof

Technical Field

The application relates to the field of polyphenylene sulfide materials, in particular to a high-rigidity high-temperature-resistant PPS modified material and a preparation method thereof.

Background

PPS is the abbreviation of polyphenylene sulfide resin, is a novel high-performance thermoplastic resin, has the characteristics of high temperature resistance, nonflammability, chemical resistance and excellent electrical property, and is commonly used as a structural high polymer material. Besides being used as engineering plastics, PPS can also be used as various functional films, coatings and composite materials, and with the improvement of the requirements of various industries on the performance of the materials, the application prospect of PPS is more and more bright, and the demand on PPS is increased.

The heat and high temperature resistance of PPS is one of the reasons why PPS is popular, so that PPS can be used in a scene with a high temperature, however, PPS has disadvantages of insufficient rigidity and poor impact resistance, which also limits wider use of PPS, and thus needs to be improved.

Disclosure of Invention

In order to improve the rigidity of the PPS material, the application provides a high-rigidity high-temperature-resistant PPS modified material and a preparation method thereof.

In a first aspect, the application provides a high-rigidity high-temperature-resistant PPS modified material, which adopts the following technical scheme:

the PPS modified material with high rigidity and high temperature resistance comprises the following raw materials in parts by weight:

30-40 parts of PPS;

22-29 parts of glass fiber;

1.2-2.2 parts of polyvinylidene fluoride;

1.7-3.2 parts of maleic anhydride grafted polymer;

5-7.5 parts of an inorganic filler;

0.5-1.5 parts of antioxidant.

By adopting the technical scheme, because the glass fiber is added, the glass fiber is a fiber with good rigidity, the rigidity of the material can be improved, and the polyvinylidene fluoride and the maleic anhydride grafted polymer are used as compatilizers, so that the compatibility of the glass fiber and the PPS is improved, the combination of the glass fiber and the PPS is more stable, the integral rigidity of the material is better improved, and the PPS material has the advantages of high rigidity and high temperature resistance.

Preferably, the maleic anhydride grafted polymer is selected from one or two of ABS-g-MAH and POE-g-MAH.

By adopting the technical scheme, both the ABS-g-MAH and the POE-g-MAH can be matched with polyvinylidene fluoride for use, so that the compatibility of the glass fiber and the PPS is better improved, and the rigidity of the material is improved.

Preferably, the maleic anhydride grafted polymer is a compound combination of ABS-g-MAH and POE-g-MAH, and the weight ratio of the ABS-g-MAH to the POE-g-MAH is (1.5-1.8): 1.

By adopting the technical scheme, the polyvinylidene fluoride, the ABS-g-MAH and the POE-g-MAH are compounded for use, so that the effects of improving the extensibility and the water resistance of the material can be achieved, and the performance of the PPS material is better and excellent.

Preferably, the grafting rate of the ABS-g-MAH is 1.2-1.5%.

By adopting the technical scheme, the grafting rate of the maleic anhydride is limited, and the effect of using the ABS-g-MAH as the compatilizer is better.

Preferably, the POE-g-MAH grafting rate is 0.8-1.2%.

By adopting the technical scheme, the grafting rate of the maleic anhydride is limited, and the POE-g-MAH can have better effect as the compatilizer.

Preferably, the inorganic filler is calcium carbonate.

By adopting the technical scheme, the calcium carbonate can play a role in filling and reinforcing, and the rigidity of the material is further improved.

Preferably, the glass fibers are alkali-free glass fibers.

By adopting the technical scheme, the alkali-free glass fiber has good structural stability and high heat resistance, and is suitable for being compounded with PPS to form a high-rigidity and high-temperature-resistant material.

Preferably, the linear density of the glass fiber is 1200-2400 tex.

Through adopting above-mentioned technical scheme, the reinforcing effect of the glass fiber of above-mentioned linear density to PPS is better.

In a second aspect, the application provides a preparation method of a high-rigidity high-temperature-resistant PPS modified material, which adopts the following technical scheme:

a preparation method of a high-rigidity high-temperature-resistant PPS modified material comprises the following steps:

stirring and mixing PPS, glass fiber, polyvinylidene fluoride, maleic anhydride grafted polymer, inorganic filler and antioxidant to obtain a mixture;

and melting and extruding the mixture for molding, cooling and dicing the extruded material to obtain the high-rigidity high-temperature-resistant PPS modified material.

By adopting the technical scheme, the raw materials are stirred and premixed, and then are subjected to melt extrusion molding, so that the compounding effect of the PPS and the rest raw materials is improved.

In summary, the present application has the following beneficial effects:

1. the glass fiber is added, the glass fiber is a fiber with good rigidity, the rigidity of the material can be improved, and the polyvinylidene fluoride and the maleic anhydride grafted polymer are used as compatilizers, so that the compatibility of the glass fiber and the PPS is improved, the combination of the glass fiber and the PPS is more stable, the integral rigidity of the material is better improved, and the PPS material has the advantages of high rigidity and high temperature resistance;

2. the compatilizer is preferably compounded by polyvinylidene fluoride, ABS-g-MAH and POE-g-MAH, so that not only is the rigidity of the material improved, but also the extensibility and the water resistance of the material are improved.

Detailed Description

The present application will be described in further detail with reference to examples.

PPS is selected from Yokomo Plastic materials Co., Ltd, Dongguan, model BR 42B;

the glass fiber is selected from Taishan glass fiber Co., Ltd, model number T911;

polyvinylidene fluoride was purchased from Shandong vitamin evolution technology, Inc., model 1215 HT;

ABS-g-MAH is purchased from Shanghai Plastic materials Limited of Dongguan city, model VE-225K;

POE-g-MAH was purchased from Shanghai Plastic materials, Inc., Dongguan, model 1215 HT.

Examples

Example 1

The embodiment discloses a high-rigidity high-temperature-resistant PPS modified material, which is prepared by the following steps:

adding 30kg of PPS, 24kg of glass fiber, 1.2kg of polyvinylidene fluoride, 1.7kg of ABS-g-MAH, 5kg of calcium carbonate and 0.5kg of 4, 4' -dihydroxy diphenylcyclohexane into a high-speed stirrer, and stirring and mixing for 5min to obtain a mixture;

adding the mixture into a double-screw extruder, and melting, wherein the melting temperature is set as follows: and the first-stage temperature is 265 ℃, the second-stage temperature is 270 ℃, the third-stage temperature is 285 ℃, the fourth-stage temperature is 295 ℃, the fifth-stage temperature is 305 ℃, then extrusion is carried out, and the extruded material is cooled and cut into particles to obtain the high-rigidity high-temperature-resistant PPS modified material.

Wherein the glass fiber is alkali-free glass fiber, and the linear density is 1200 tex; the grafting rate of the ABS-g-MAH is 1.2-1.5%.

Example 2

adding 35kg of PPS, 22kg of glass fiber, 2.2kg of polyvinylidene fluoride, 3.5kg of ABS-g-MAH, 6.5kg of calcium carbonate and 1.2kg of 4, 4' -dihydroxy diphenyl cyclohexane into a high-speed stirrer, and stirring and mixing for 5min to obtain a mixture;

Example 3

adding 40kg of PPS, 29kg of glass fiber, 1.5kg of polyvinylidene fluoride, 2.2kg of ABS-g-MAH, 7.5kg of calcium carbonate and 1kg of triisooctyl phosphite into a high-speed stirrer, and stirring and mixing for 5min to obtain a mixture;

Wherein the glass fiber is alkali-free glass fiber, and the linear density is 2400 tex; the grafting rate of the ABS-g-MAH is 1.2-1.5%.

Example 4

adding 37kg of PPS, 26kg of glass fiber, 1.8kg of polyvinylidene fluoride, 2.6kg of ABS-g-MAH, 5.5kg of calcium carbonate and 1.5kg of 4, 4' -dihydroxy diphenylcyclohexane into a high-speed stirrer, and stirring and mixing for 5min to obtain a mixture;

Wherein the glass fiber is alkali-free glass fiber, and the linear density is 2400 tex; the graft ratio of the ABS-g-MAH is 1.2-1.5%.

Example 5

The embodiment discloses a PPS modified material with high rigidity and high temperature resistance.

The difference between the embodiment and the embodiment 4 is that the ABS-g-MAH is replaced by the same amount of POE-g-MAH, and the grafting rate of the POE-g-MAH is 0.8-1.2%.

Example 6

The difference between this example and example 4 is that 1.56kg of ABS-g-MAH was added, and 1.04kg of POE-g-MAH was added, and the grafting ratio of POE-g-MAH was 0.8-1.2%.

Example 7

The difference between this example and example 4 is that ABS-g-MAH was added in an amount of 1.67kg, and 0.93kg of POE-g-MAH was added, and the grafting ratio of POE-g-MAH was 0.8-1.2%.

Comparative example

Comparative example 1

This comparative example discloses a PPS modified material.

This comparative example differs from example 4 in that the glass fibers are replaced by an equal amount of PPS.

Comparative example 2

This comparative example discloses a PPS modified material.

This comparative example differs from example 4 in that the same amount of PPS was used instead of polyvinylidene fluoride and ABS-g-MAH.

Comparative example 3

This comparative example discloses a PPS modified material.

This comparative example differs from example 4 in that the same amount of PPS is used instead of polyvinylidene fluoride.

Comparative example 4

This comparative example discloses a PPS modified material.

This comparative example differs from example 4 in that the polyvinylidene fluoride was replaced by an equal amount of PPS and the ABS-g-MAH was replaced by an equal amount of POE-g-MAH.

Comparative example 5

This comparative example discloses a PPS modified material.

This comparative example differs from example 4 in that the ABS-g-MAH was replaced by an equal amount of PPS.

Performance test

Notched impact strength tests were carried out on the materials of the examples and comparative examples according to GB/T1843-1996 method of Plastic Izod impact test, the higher the impact strength the better the stiffness of the material, and the test results are shown in Table 1.

The materials of the respective examples and comparative examples were subjected to elongation at break tests according to GB/T1040.2-2006 "determination of tensile Properties of plastics", the higher the elongation at break representing the better the extensibility of the material, the test results being shown in Table 1.

Soaking the materials of each example and each comparative example in hot water at 90 ℃ for 24h, drying in an oven at 50 ℃ for 1h after soaking, testing the impact strength of the materials of each example and each comparative example according to GB/T1843 1996 plastic cantilever beam impact test method to obtain the impact strength of the materials after hydrothermal test, calculating the retention rate of the impact strength of the materials of the same example or each comparative example, and calculating the formula: the retention of impact strength = impact strength after hydrothermal test/impact strength not subjected to hydrothermal test, and higher retention of impact strength indicates better water resistance of the material, and the test results are shown in table 1.

TABLE 1

	Impact Strength (KJ/m 2)	Elongation at Break (%)	Retention ratio of impact Strength (%)
				Example 1	8.4	1.2	56.2
Example 2	8.9	1.2	57.0
				Example 3	8.1	1.1	56.5
Example 4	8.8	1.2	57.4
				Example 5	8.7	1.2	54.8
Example 6	9.4	2.4	64.5
				Example 7	9.1	2.5	65.3
Comparative example 1	2.7	12.8	51.3
				Comparative example 2	6.2	1.0	54.8
Comparative example 3	7.2	1.0	53.8
				Comparative example 4	6.9	1.1	54.4
Comparative example 5	6.6	1.0	55.6

According to Table 1, the impact strength of examples 1 to 4 is higher than that of comparative example 1, which shows that the addition of glass fiber, which is a fiber having good rigidity, can improve the impact resistance of the material to thereby improve the rigidity of the material, and the high temperature resistance of PPS itself to thereby produce a PPS-modified material having high rigidity and high temperature resistance.

Compared with the example 4, in the comparative examples 1 to 5, under the condition that no compatilizer is added and only one compatilizer of polyvinylidene fluoride and maleic anhydride graft polymer is added, the rigidity of the material cannot be greatly improved as that of the example 4, probably because the compatilizer formed by compounding the polyvinylidene fluoride and the maleic anhydride graft polymer has a better effect of improving the compatibility between the glass fiber and the PPS, the integral structural stability of the material is improved, and the rigidity of the material is improved.

The impact strength of the embodiment 4 is similar to that of the embodiment 5, which shows that the compatibility between the glass fiber and the PPS can be improved by compounding the polyvinylidene fluoride and the ABS-g-MAH or compounding the polyvinylidene fluoride and the POE-g-MAH, and further proves that the compounding advantage of the polyvinylidene fluoride and the maleic anhydride graft polymer is improved, so that the rigidity of the material is improved.

Compared with the example 4, the impact strength of the examples 6 to 7 is similar, but the elongation at break and the retention rate of the impact strength of the examples 6 to 7 are both improved, namely, the extensibility and the water resistance are improved, although the extensibility of the PPS is reduced due to the addition of the glass fiber, the uniformity of the material structure is improved when the polyvinylidene fluoride, the ABS-g-MAH and the POE-g-MAH are compounded, the interface bonding of the PPS and the glass fiber is enhanced, the water absorption of the material is reduced, and therefore the extensibility and the water resistance of the material are improved through the synergistic effect of the polyvinylidene fluoride, the ABS-g-MAH and the POE-g-MAH.

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

1. The PPS modified material with high rigidity and high temperature resistance is characterized by comprising the following raw materials in parts by weight:

30-40 parts of PPS;

22-29 parts of glass fiber;

1.2-2.2 parts of polyvinylidene fluoride;

1.7-3.2 parts of maleic anhydride grafted polymer;

5-7.5 parts of an inorganic filler;

0.5-1.5 parts of an antioxidant;

the maleic anhydride grafted polymer is a compound combination of ABS-g-MAH and POE-g-MAH, and the weight ratio of the ABS-g-MAH to the POE-g-MAH is (1.5-1.8): 1;

the grafting rate of the ABS-g-MAH is 1.2-1.5%;

the grafting rate of the POE-g-MAH is 0.8-1.2%.

2. The high-rigidity high-temperature-resistant PPS modified material as set forth in claim 1, wherein: the inorganic filler is calcium carbonate.

3. The PPS modified material with high rigidity and high temperature resistance as claimed in claim 1, wherein: the antioxidant is selected from 4, 4' -dihydroxydiphenylcyclohexane or triisooctyl phosphite.

4. The PPS modified material with high rigidity and high temperature resistance as claimed in claim 1, wherein: the glass fiber is alkali-free glass fiber.

5. The high-rigidity high-temperature-resistant PPS modified material as set forth in claim 1, wherein: the linear density of the glass fiber is 1200-2400 tex.

6. A preparation method of a high-rigidity high-temperature-resistant PPS modified material is characterized by comprising the following steps: the preparation method of the high-rigidity high-temperature-resistant PPS modified material as described in any one of claims 1-5, comprising the following steps: