Long-acting antistatic glass fiber reinforced polypropylene composite material as well as preparation method and application thereof

Abstract

The invention provides a long-acting antistatic glass fiber reinforced polypropylene composite material as well as a preparation method and application thereof. The long-acting antistatic glass fiber reinforced polypropylene composite material is prepared from the following components in parts by weight: 70 to 90 parts of glass fiber reinforced polypropylene, 10 to 20 parts of antistatic master batch, 0.1 to 0.5 part of antioxidant and 0.5 to 1 part of magnesium stearate, wherein the antistatic master batch comprises the following components in parts by weight: 80-85 parts of a polypropylene base material, 15-20 parts of nano ATO, 2-3 parts of a polyethylene wax dispersing agent and 0.5-1 part of a lubricating agent. According to the invention, the nano ATO is pre-dispersed in the antistatic master batch and then is subjected to synergistic copolymerization with a glass fiber network in the glass fiber reinforced polypropylene, and the surface resistivity of the composite material can be reduced to 106-108 omega.cm through a small addition amount. Compared with carbon black and other traditional fillers in the prior art, the addition amount of the nano ATO in the application is small, so that the surface resistivity of the composite material can be reduced to 10 < 6 >-10 < 8 > omega.cm, and the surface resistivity of the composite material can be reduced to 10 < 6 >-10 < 8 > omega.cm. The density, the color and the mechanical property of the composite material are not influenced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of long-acting antistatic material, in particular to long-acting antistatic glass fiber reinforced polypropylene composite material and its preparation method and application. BACKGROUND

[0002] Polypropylene (PP) is a lightweight, high crystallinity thermoplastic polymer, which is widely used in packaging, automotive parts, building pipes and daily necessities due to its excellent mechanical properties, chemical corrosion resistance and low cost. However, the high insulating property of PP leads to a surface resistivity as high as 10 16 -10 18 Ω·cm, which is prone to static accumulation due to friction, causing dust absorption, discharge and even fire and explosion risk, restricting its application in sensitive fields such as electronic packaging and mining equipment.

[0003] The main methods to improve the antistatic property of PP currently include adding antistatic agents and conductive fillers, but both methods have the following significant defects: generally, the antistatic effect of small molecule antistatic agents is highly dependent on humidity, and small molecules are prone to migration and precipitation, resulting in poor long-term performance. Although high molecular permanent antistatic agents can improve durability, the synthesis process is complex, requiring multiple esterification, hydrolysis and neutralization reactions, and the compatibility with PP depends on the compatibilizer such as maleic anhydride grafted polypropylene, which is costly. Traditional conductive fillers such as carbon black and carbon nanotubes: although humidity is not sensitive, high filling amount is required to form a conductive network, resulting in increased material density, dark color, and serious sacrifice of mechanical properties.

[0004] Therefore, there is a need to solve the balance problem of long-term performance, low addition amount, mechanical property retention and multifunctional synergy in antistatic PP. SUMMARY

[0005] To overcome the problems in the related art, one of the purposes of the present application is to provide a long-acting antistatic glass fiber reinforced polypropylene composite material. In the present application, nano ATO is first pre-dispersed in antistatic masterbatch, and then synergistically copolymerized with the glass fiber network in glass fiber reinforced polypropylene, so that the surface resistivity of the composite material can be reduced to 10 6 -10 8 Ω·cm by a smaller addition amount. Compared with traditional fillers such as carbon black in the prior art, the addition amount of nano ATO in the present application is smaller, which does not affect the density, color and mechanical properties of the composite material.

[0006] The application discloses a long-acting antistatic glass fiber reinforced polypropylene composite material, which comprises the following components in parts by weight: 70-90 parts of glass fiber reinforced polypropylene, 10-20 parts of antistatic masterbatch, 0.1-0.5 parts of antioxidant and 0.5-1 part of magnesium stearate; wherein the antistatic masterbatch comprises the following components in parts by weight: 80-85 parts of polypropylene base material, 15-20 parts of nano ATO, 2-3 parts of polyethylene wax dispersant and 0.5-1 part of lubricant.

[0007] The magnesium stearate forms an interfacial lubricating layer between the glass fiber and the polypropylene matrix, can reduce stress concentration when the glass fiber and the polypropylene matrix are separated, further improves the interfacial bonding strength and cooperatively improves the overall mechanical property of the composite material.

[0008] In the preferable technical scheme of the application, the particle size of the nano ATO is 10-50 nm, and the molar ratio of tin oxide to antimony oxide in the nano ATO is 95:5.

[0009] The nano ATO refers to a nano antimony doped tin dioxide material, forms a core-shell structure through a semiconductor doping technology and realizes balance of electrical conductivity and optical property.

[0010] In the application, the nano ATO is firstly pre-dispersed in the antistatic masterbatch and then is copolymerized with the glass fiber network in the glass fiber reinforced polypropylene, so that the surface resistivity of the composite material can be reduced to 10 6 -10 8 Ω*cm through a smaller addition amount, compared with traditional fillers such as carbon black in the prior art, the addition amount of the nano ATO in the application is smaller and does not affect the density, color and mechanical property of the composite material.

[0011] The nano ATO added in an appropriate amount not only endows the composite material with antistatic capacity but also plays a nucleating role in the polypropylene matrix, induces formation of more delicate and uniform spherulite structure, thereby optimizing stress distribution of the matrix and improving impact property.

[0012] In the preferable technical scheme of the application, the glass fiber content in the glass fiber reinforced polypropylene is 21wt%-25wt%.

[0013] The glass fiber forms a rigid skeleton in the glass fiber reinforced polypropylene, the nano ATO uniformly coats the surface of the glass fiber, a "fiber-particle" double conductive network is constructed, the physical barrier of high glass fiber content to the conductive path is avoided, the conductive efficiency is improved while the high tensile strength and impact strength are maintained.

[0014] The second purpose of the present application is to provide a preparation method of long-acting antistatic glass fiber reinforced polypropylene composite material, comprising:

[0015] 70-90 parts of glass fiber reinforced polypropylene, 10-20 parts of antistatic masterbatch, 0.1-0.5 parts of antioxidant, and 0.5-1 parts of magnesium stearate are put into an extruder for sufficient melt blending, and the long-acting antistatic glass fiber reinforced polypropylene composite material is obtained after extrusion, cooling and granulation.

[0016] The antistatic masterbatch comprises the following components in parts by weight: 80-85 parts of polypropylene base material, 15-20 parts of nano ATO, 2-3 parts of polyethylene wax dispersant, and 0.5-1 parts of lubricant.

[0017] In the preferred technical solution of the present application, the extruder is a double screw extruder, and when the long-acting antistatic glass fiber reinforced polypropylene composite material is prepared, the processing temperature of the double screw extruder is as follows: the temperature of the first zone is 165℃, the temperature of the second zone is 170℃, the temperature of the third zone is 175℃, the temperature of the fourth zone is 185℃, the temperature of the fifth zone is 195℃, the temperature of the sixth zone is 180℃, the temperature of the seventh zone is 175℃, the temperature of the eighth zone is 185℃, the temperature of the ninth zone is 190℃, the temperature of the die head is 195℃, and the rotation speed of the main machine is 350r / min.

[0018] In the preferred technical solution of the present application, the preparation of the antistatic masterbatch comprises:

[0019] 80-85 parts of polypropylene base material, 15-20 parts of nano ATO, 2-3 parts of polyethylene wax dispersant, and 0.5-1 parts of lubricant are put into an extruder for sufficient melt blending, and the antistatic masterbatch is obtained after extrusion, cooling and granulation.

[0020] In the preferred technical solution of the present application, the extruder is a double screw extruder, and when the antistatic masterbatch is prepared, the processing temperature of the double screw extruder is as follows: the temperature of the first zone is 165℃, the temperature of the second zone is 170℃, the temperature of the third zone is 175℃, the temperature of the fourth zone is 185℃, the temperature of the fifth zone is 195℃, the temperature of the sixth zone is 180℃, the temperature of the seventh zone is 175℃, the temperature of the eighth zone is 185℃, the temperature of the ninth zone is 190℃, the temperature of the die head is 195℃, and the rotation speed of the main machine is 350r / min.

[0021] In the preferred technical solution of the present application, the preparation method of the glass fiber reinforced polypropylene comprises:

[0022] 75-79 parts of polypropylene, 21-25 parts of glass fiber are uniformly mixed, put into an extruder for sufficient melt blending, and the glass fiber reinforced polypropylene is obtained after extrusion, cooling and granulation.

[0023] In the preferred technical scheme of the application, the extruder is a double screw extruder, and when the glass fiber reinforced polypropylene is prepared, the processing temperature of the double screw extruder is as follows: the temperature of the first zone is 175 DEG C, the temperature of the second zone is 180 DEG C, the temperature of the third zone is 185 DEG C, the temperature of the fourth zone is 195 DEG C, the temperature of the fifth zone is 205 DEG C, the temperature of the sixth zone is 190 DEG C, the temperature of the seventh zone is 185 DEG C, the temperature of the eighth zone is 195 DEG C, the temperature of the ninth zone is 200 DEG C, the temperature of the die head is 205 DEG C, and the rotation speed of the main machine is 350 r / min.

[0024] The third object of the application is to provide an application of the long-acting antistatic glass fiber reinforced polypropylene composite material, the nano ATO is pre-dispersed in the antistatic master batch, and then is synergistically copolymerized with the glass fiber network, so that high-efficiency antistatic is realized under low addition amount, and meanwhile, high mechanical strength and long-term stability are maintained, and the application can be applied in the fields of packaging, automobile parts, building pipes and daily necessities.

[0025] The application has the following beneficial effects:

[0026] The long-acting antistatic glass fiber reinforced polypropylene composite material provided by the application comprises the following components in parts by weight: 70-90 parts of glass fiber reinforced polypropylene, 10-20 parts of antistatic master batch, 0.1-0.5 parts of antioxidant and 0.5-1 part of magnesium stearate; wherein the antistatic master batch comprises the following components in parts by weight: 80-85 parts of polypropylene base material, 15-20 parts of nano ATO, 2-3 parts of polyethylene wax dispersant and 0.5-1 part of lubricant. In the application, the nano ATO is pre-dispersed in the antistatic master batch, and then is synergistically copolymerized with the glass fiber network in the glass fiber reinforced polypropylene, so that the surface resistivity of the composite material can be reduced to 10 6 -10 8 Ω·cm by a smaller addition amount, compared with the traditional fillers such as carbon black in the prior art, the addition amount of the nano ATO in the application will not affect the density, color and mechanical properties of the composite material. In the composite material of the application, the glass fiber forms a rigid skeleton, the nano ATO uniformly coats the surface of the glass fiber, a "fiber-particle" double-conductive network is constructed, the physical barrier of high glass fiber content to the conductive path is avoided, the conductive efficiency is improved while the high tensile strength and impact strength are maintained. The nano ATO in the application has strong weather resistance and can overcome the migration failure problem of the organic antistatic agent. The magnesium stearate in the application forms an interfacial lubricating layer between the glass fiber and the polypropylene matrix, can reduce the stress concentration when the glass fiber and the polypropylene matrix are separated, further improves the interfacial bonding strength, and synergistically improves the overall mechanical properties of the composite material.

[0027] The application provides a preparation method of a long-acting antistatic glass fiber reinforced polypropylene composite material, which comprises the following steps: putting 70-90 parts of glass fiber reinforced polypropylene, 10-20 parts of antistatic masterbatch, 0.1-0.5 parts of antioxidant and 0.5-1 parts of magnesium stearate into an extruder for sufficient melt blending, and then obtaining the long-acting antistatic glass fiber reinforced polypropylene composite material through extrusion, cooling and granulation. The melt blending, extrusion, cooling and granulation are performed through the extruder, the processing temperature of the extruder is controlled, the material performance stability can be ensured, the process steps are simple and convenient, and the batch stable production of the long-acting antistatic glass fiber reinforced polypropylene composite material can be realized.

[0028] The application provides a long-acting antistatic glass fiber reinforced polypropylene composite material, which is prepared by pre-dispersing nano ATO in an antistatic masterbatch and then synergistically copolymerizing the antistatic masterbatch with a glass fiber network, so that high-efficiency antistatic performance can be realized under a low addition amount, high mechanical strength and long-term stability can be maintained, and the long-acting antistatic glass fiber reinforced polypropylene composite material can be applied in the fields of packaging, automobile parts, building pipes and daily necessities. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The figure is a preparation process of the long-acting antistatic glass fiber reinforced polypropylene composite material in the embodiment of the application.

[0030] Figure 2 The figure is a preparation process of the antistatic masterbatch in the embodiment of the application.

[0031] Figure 3 The figure is a preparation process of the nano ATO in the embodiment of the application. DETAILED DESCRIPTION

[0032] Preferred embodiments of the present application will be described herein below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0033] The terms used in the present application are merely for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0034] It should be understood that, although the terms "first", "second", "third", etc. can be employed in describing various information according to the present application, the information should not be limited to these terms. These terms are only used to distinguish one type of information from another type of information. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information, without departing from the scope of the present application. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0035] The application provides a long-acting antistatic glass fiber reinforced polypropylene composite material, which comprises the following components in parts by weight: 70-90 parts of glass fiber reinforced polypropylene, 10-20 parts of antistatic master batch, 0.1-0.5 parts of antioxidant, and 0.5-1 part of magnesium stearate.

[0036] The antistatic master batch comprises the following components in parts by weight: 80-85 parts of polypropylene base material, 15-20 parts of nano ATO, 2-3 parts of polyethylene wax dispersant, and 0.5-1 part of lubricant. The particle size of the nano ATO is 10-50 nm, and the molar ratio of tin oxide to antimony oxide in the nano ATO is 95:5.

[0037] The nano ATO refers to a nanoscale antimony-doped tin dioxide material (Antimony Tin Oxide) that forms a core-shell structure through semiconductor doping technology to achieve a balance between electrical conductivity and optical performance. The application limits the particle size of the nano ATO to 10-50 nm, and the molar ratio of tin oxide to antimony oxide to 95:5, ensuring that the nano ATO has a high specific surface area and a low resistivity.

[0038] In the application, the nano ATO is first pre-dispersed in the antistatic master batch, and then synergistically copolymerized with the glass fiber network in the glass fiber reinforced polypropylene, so that the surface resistivity of the composite material can be reduced to 10 6 -10 8 Ω·cm, compared with the traditional fillers such as carbon black in the prior art, the addition amount of the nano ATO in the application is small, which does not affect the density, color and mechanical properties of the composite material. At the same time, as an inorganic material, the nano ATO has strong weather resistance and can overcome the migration failure problem of organic antistatic agents.

[0039] The appropriate addition of the nano ATO not only gives the composite material antistatic ability, but also plays a nucleating role in the polypropylene matrix, inducing the formation of a more detailed and uniform spherulite structure, thereby optimizing the stress distribution of the matrix and improving the impact performance. Here, the polypropylene matrix refers to the polypropylene in the glass fiber reinforced polypropylene and the polypropylene base material in the antistatic master batch.

[0040] The glass fiber content in the glass fiber reinforced polypropylene in the present application is 21wt%-25wt%. The glass fiber in the glass fiber reinforced polypropylene forms a rigid skeleton, the nano ATO uniformly coats the surface of the glass fiber, a "fiber-particle" double conductive network is constructed, the physical barrier of high glass fiber content to the conductive path is avoided, and the conductive efficiency is improved while maintaining high tensile strength and impact strength.

[0041] The glass fiber reinforced polypropylene is a composite material reinforced by glass fiber and polypropylene matrix, and has good tensile strength, bending strength and impact strength.

[0042] The magnesium stearate forms an interfacial lubricating layer between the glass fiber and the polypropylene matrix, can reduce the stress concentration when the glass fiber and the polypropylene matrix are separated, further improves the interfacial bonding strength, and cooperatively improves the overall mechanical properties of the composite material.

[0043] The antioxidant is specifically a complex of antioxidant 1010 and antioxidant 168, and the mass ratio of antioxidant 1010 to antioxidant 168 is 1:1.

[0044] As shown in Figure 1 The present application also provides a preparation method of the long-acting antistatic glass fiber reinforced polypropylene composite material, which comprises:

[0045] 70-90 parts of glass fiber reinforced polypropylene, 10-20 parts of antistatic masterbatch, 0.1-0.5 parts of antioxidant, and 0.5-1 parts of magnesium stearate are weighed and uniformly mixed;

[0046] The mixture is put into an extruder for sufficient melt blending, and the long-acting antistatic glass fiber reinforced polypropylene composite material is obtained after extrusion, cooling and granulation. The extruder is a double screw extruder, and when the long-acting antistatic glass fiber reinforced polypropylene composite material is prepared, the processing temperature of the double screw extruder is: the temperature of the first zone is 165℃, the temperature of the second zone is 170℃, the temperature of the third zone is 175℃, the temperature of the fourth zone is 185℃, the temperature of the fifth zone is 195℃, the temperature of the sixth zone is 180℃, the temperature of the seventh zone is 175℃, the temperature of the eighth zone is 185℃, the temperature of the ninth zone is 190℃, the temperature of the die head is 195℃, and the main machine speed is 350r / min.

[0047] Specifically, as shown in Figure 2 The preparation of the antistatic masterbatch comprises:

[0048] 80-85 parts of polypropylene base material, 15-20 parts of nano ATO, 2-3 parts of polyethylene wax dispersant, and 0.5-1 parts of lubricant are weighed and uniformly mixed;

[0049] The mixture is put into an extruder for sufficient melt blending, and the anti-static master batch is obtained after extrusion, cooling and granulation. The extruder is a double screw extruder, and when the anti-static master batch is prepared, the processing temperature of the double screw extruder is: the temperature of the first zone is 165°C, the temperature of the second zone is 170°C, the temperature of the third zone is 175°C, the temperature of the fourth zone is 185°C, the temperature of the fifth zone is 195°C, the temperature of the sixth zone is 180°C, the temperature of the seventh zone is 175°C, the temperature of the eighth zone is 185°C, the temperature of the ninth zone is 190°C, the temperature of the die head is 195°C, and the rotation speed of the main machine is 350 r / min.

[0050] As shown in Figure 3 , the preparation method of the glass fiber reinforced polypropylene comprises the following steps:

[0051] 75-79 parts of polypropylene and 21-25 parts of glass fiber are weighed and uniformly mixed,

[0052] The mixture is put into an extruder for sufficient melt blending, and the anti-static master batch is obtained after extrusion, cooling and granulation. The extruder is a double screw extruder, and when the anti-static master batch is prepared, the processing temperature of the double screw extruder is: the temperature of the first zone is 165°C, the temperature of the second zone is 170°C, the temperature of the third zone is 175°C, the temperature of the fourth zone is 185°C, the temperature of the fifth zone is 195°C, the temperature of the sixth zone is 180°C, the temperature of the seventh zone is 175°C, the temperature of the eighth zone is 185°C, the temperature of the ninth zone is 190°C, the temperature of the die head is 195°C, and the rotation speed of the main machine is 350 r / min.

[0053] The present application pre-disperses nano ATO in the anti-static master batch through the extruder, and then cooperates with the glass fiber network in the glass fiber reinforced polypropylene for copolymerization, so that the surface resistivity of the composite material can be reduced to 10 6 -10 8 Ω·cm by a small amount of addition. Compared with the traditional fillers such as carbon black in the prior art, the amount of nano ATO added in the present application is small, and the density, color and mechanical properties of the composite material are not affected.

[0054] In the composite material of the present application, the glass fiber forms a rigid skeleton, the nano ATO uniformly coats the surface of the glass fiber, and a “fiber-particle” double-conductive network is constructed, which avoids the physical barrier of high glass fiber content to the conductive path, while maintaining high tensile strength and impact strength and improving the conductive efficiency.

[0055] The nano ATO in the present application has strong weather resistance and can overcome the migration failure problem of organic anti-static agents.

[0056] In the present application, magnesium stearate forms an interfacial lubricating layer between the glass fiber and the polypropylene matrix, which can reduce the stress concentration when the glass fiber and the polypropylene matrix separate, further improve the interfacial bonding strength, and synergistically improve the overall mechanical properties of the composite material.

[0057] The application is further explained by the following examples and comparative examples, wherein the formulations of Example 1-4 and Comparative Example 1 and Comparative Example 3 are shown in Table 1:

[0058] Example 1

[0059] The long-acting antistatic glass fiber reinforced polypropylene composite material provided in this example comprises the following components in parts by weight: 80 parts of glass fiber reinforced polypropylene, 10 parts of antistatic masterbatch, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, and 0.5 part of magnesium stearate.

[0060] The antistatic masterbatch comprises the following components in parts by weight: 82 parts of polypropylene base material, 17 parts of nano ATO, 2.5 parts of polyethylene wax dispersant, and 0.5 parts of lubricant. The particle size of the nano ATO is 10-50 nm, and the molar ratio of tin oxide to antimony oxide in the nano ATO is 95:5.

[0061] The example provides a preparation method of a long-acting antistatic glass fiber reinforced polypropylene composite material, comprising:

[0062] Preparation of antistatic masterbatch: take 82 parts of polypropylene base material, 17 parts of nano ATO, 2.5 parts of polyethylene wax dispersant, and 0.5 parts of lubricant, and mix uniformly; put the above mixture into a double screw extruder for sufficient melt blending, and after extrusion, cooling and granulation, the antistatic masterbatch is obtained. The processing temperature of the double screw extruder is: the temperature of the first zone is 165°C, the temperature of the second zone is 170°C, the temperature of the third zone is 175°C, the temperature of the fourth zone is 185°C, the temperature of the fifth zone is 195°C, the temperature of the sixth zone is 180°C, the temperature of the seventh zone is 175°C, the temperature of the eighth zone is 185°C, the temperature of the ninth zone is 190°C, and the temperature of the die head is 195°C, and the main machine speed is 350 revolutions / min.

[0063] Preparation of glass fiber reinforced polypropylene: take 78 parts of polypropylene and 23 parts of glass fiber and mix uniformly, put the above mixture into a double screw extruder for sufficient melt blending, and after extrusion, cooling and granulation, the glass fiber reinforced polypropylene is obtained. The processing temperature of the double screw extruder is: the temperature of the first zone is 175°C, the temperature of the second zone is 180°C, the temperature of the third zone is 185°C, the temperature of the fourth zone is 195°C, the temperature of the fifth zone is 205°C, the temperature of the sixth zone is 190°C, the temperature of the seventh zone is 185°C, the temperature of the eighth zone is 195°C, the temperature of the ninth zone is 200°C, and the temperature of the die head is 205°C, and the main machine speed is 350 revolutions / min.

[0064] Take 80 parts of glass fiber reinforced polypropylene, 10 parts of antistatic masterbatch, 0.1 parts of antioxidant 1010, 0.1 parts of antioxidant 168, 0.5 parts of magnesium stearate, mix evenly; the mixture is put into a double screw extruder for sufficient melt blending, and the long-acting antistatic glass fiber reinforced polypropylene composite material is obtained after extrusion, cooling and granulation. The processing temperature of the double screw extruder is: the temperature of the first zone is 165℃, the temperature of the second zone is 170℃, the temperature of the third zone is 175℃, the temperature of the fourth zone is 185℃, the temperature of the fifth zone is 195℃, the temperature of the sixth zone is 180℃, the temperature of the seventh zone is 175℃, the temperature of the eighth zone is 185℃, the temperature of the ninth zone is 190℃, the temperature of the die head is 195℃, and the rotation speed of the main machine is 350r / min, and the water length is 3m.

[0065] Example 2

[0066] The long-acting antistatic glass fiber reinforced polypropylene composite material provided in this embodiment comprises the following components in parts by weight: glass fiber reinforced polypropylene 80 parts, antistatic masterbatch 15 parts, 0.1 parts of antioxidant 1010, 0.1 parts of antioxidant 168, and 0.5 parts of magnesium stearate.

[0067] The antistatic masterbatch comprises the following components in parts by weight: 82 parts of polypropylene base material, 17 parts of nano ATO, 2.5 parts of polyethylene wax dispersant, and 0.5 parts of lubricant. The particle size of the nano ATO is 10-50nm, and the molar ratio of tin oxide and antimony oxide in the nano ATO is 95:5.

[0068] The preparation method of the long-acting antistatic glass fiber reinforced polypropylene composite material provided in this embodiment comprises:

[0069] Preparation of antistatic masterbatch: take 82 parts of polypropylene base material, 17 parts of nano ATO, 2.5 parts of polyethylene wax dispersant, and 0.5 parts of lubricant, mix evenly; the mixture is put into a double screw extruder for sufficient melt blending, and the antistatic masterbatch is obtained after extrusion, cooling and granulation. The processing temperature of the double screw extruder is: the temperature of the first zone is 165℃, the temperature of the second zone is 170℃, the temperature of the third zone is 175℃, the temperature of the fourth zone is 185℃, the temperature of the fifth zone is 195℃, the temperature of the sixth zone is 180℃, the temperature of the seventh zone is 175℃, the temperature of the eighth zone is 185℃, the temperature of the ninth zone is 190℃, the temperature of the die head is 195℃, and the rotation speed of the main machine is 350r / min.

[0070] Preparation of glass fiber reinforced polypropylene: 78 parts of polypropylene and 23 parts of glass fiber are weighed and uniformly mixed, and the mixture is put into a twin-screw extruder for sufficient melt blending. The glass fiber reinforced polypropylene is obtained after extrusion, cooling and granulation. The processing temperature of the twin-screw extruder is: the temperature of the first zone is 175°C, the temperature of the second zone is 180°C, the temperature of the third zone is 185°C, the temperature of the fourth zone is 195°C, the temperature of the fifth zone is 205°C, the temperature of the sixth zone is 190°C, the temperature of the seventh zone is 185°C, the temperature of the eighth zone is 195°C, the temperature of the ninth zone is 200°C, the temperature of the die head is 205°C, and the rotation speed of the main machine is 350 rpm.

[0071] 80 parts of glass fiber reinforced polypropylene, 15 parts of antistatic masterbatch, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, and 0.5 parts of magnesium stearate are weighed and uniformly mixed. The long-acting antistatic glass fiber reinforced polypropylene composite material is obtained after the mixture is put into a twin-screw extruder for sufficient melt blending, extrusion, cooling and granulation. The processing temperature of the twin-screw extruder is: the temperature of the first zone is 165°C, the temperature of the second zone is 170°C, the temperature of the third zone is 175°C, the temperature of the fourth zone is 185°C, the temperature of the fifth zone is 195°C, the temperature of the sixth zone is 180°C, the temperature of the seventh zone is 175°C, the temperature of the eighth zone is 185°C, the temperature of the ninth zone is 190°C, the temperature of the die head is 195°C, the rotation speed of the main machine is 350 rpm, and the water passing length is 3 m.

[0072] Example 3

[0073] The long-acting antistatic glass fiber reinforced polypropylene composite material provided in this embodiment comprises the following components in parts by weight: 80 parts of glass fiber reinforced polypropylene, 20 parts of antistatic masterbatch, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, and 0.5 parts of magnesium stearate.

[0074] The antistatic masterbatch comprises the following components in parts by weight: 82 parts of polypropylene base material, 17 parts of nano ATO, 2.5 parts of polyethylene wax dispersant, and 0.5 parts of lubricant. The particle size of the nano ATO is 10-50 nm, and the molar ratio of tin oxide to antimony oxide in the nano ATO is 95:5.

[0075] The preparation method of the long-acting antistatic glass fiber reinforced polypropylene composite material provided in this embodiment comprises:

[0076] Preparation of antistatic masterbatch: 82 parts of polypropylene base material, 17 parts of nano ATO, 2.5 parts of polyethylene wax dispersant, 0.5 parts of lubricant, and 0.5 parts of lubricant were mixed uniformly; the above mixture was put into a double screw extruder for sufficient melt blending, and the antistatic masterbatch was obtained after extrusion, cooling and granulation. The processing temperature of the double screw extruder: the temperature of the first zone is 165°C, the temperature of the second zone is 170°C, the temperature of the third zone is 175°C, the temperature of the fourth zone is 185°C, the temperature of the fifth zone is 195°C, the temperature of the sixth zone is 180°C, the temperature of the seventh zone is 175°C, the temperature of the eighth zone is 185°C, the temperature of the ninth zone is 190°C, the temperature of the die head is 195°C, and the main machine speed is 350 rpm / min.

[0077] Preparation of glass fiber reinforced polypropylene: 78 parts of polypropylene and 23 parts of glass fiber were mixed uniformly, and the mixture was put into a double screw extruder for sufficient melt blending, and the glass fiber reinforced polypropylene was obtained after extrusion, cooling and granulation. The processing temperature of the double screw extruder: the temperature of the first zone is 175°C, the temperature of the second zone is 180°C, the temperature of the third zone is 185°C, the temperature of the fourth zone is 195°C, the temperature of the fifth zone is 205°C, the temperature of the sixth zone is 190°C, the temperature of the seventh zone is 185°C, the temperature of the eighth zone is 195°C, the temperature of the ninth zone is 200°C, the temperature of the die head is 205°C, and the main machine speed is 350 rpm / min.

[0078] 80 parts of glass fiber reinforced polypropylene, 20 parts of antistatic masterbatch, 0.1 parts of antioxidant 1010, 0.1 parts of antioxidant 168, and 0.5 parts of magnesium stearate were mixed uniformly; the mixture was put into a double screw extruder for sufficient melt blending, and the long-acting antistatic glass fiber reinforced polypropylene composite material was obtained after extrusion, cooling and granulation. The processing temperature of the double screw extruder: the temperature of the first zone is 165°C, the temperature of the second zone is 170°C, the temperature of the third zone is 175°C, the temperature of the fourth zone is 185°C, the temperature of the fifth zone is 195°C, the temperature of the sixth zone is 180°C, the temperature of the seventh zone is 175°C, the temperature of the eighth zone is 185°C, the temperature of the ninth zone is 190°C, the temperature of the die head is 195°C, and the main machine speed is 350 rpm / min, and the water length is 3m.

[0079] Example 4

[0080] The long-acting antistatic glass fiber reinforced polypropylene composite material provided in this embodiment comprises the following components in parts by weight: 70 parts of glass fiber reinforced polypropylene, 15 parts of antistatic masterbatch, 0.1 parts of antioxidant 1010, 0.1 parts of antioxidant 168, and 1 parts of magnesium stearate.

[0081] The antistatic masterbatch comprises the following components in parts by weight: 80 parts of polypropylene base material, 15 parts of nano ATO, 2 parts of polyethylene wax dispersant, and 1 part of lubricant. The particle size of the nano ATO is 10-50 nm, and the molar ratio of tin oxide to antimony oxide in the nano ATO is 95:5.

[0082] The embodiment provides a preparation method of a long-acting antistatic glass fiber reinforced polypropylene composite material, comprising the following steps:

[0083] The antistatic masterbatch is prepared by weighing 80 parts of polypropylene base material, 15 parts of nano ATO, 2 parts of polyethylene wax dispersant, and 1 part of lubricant, and uniformly mixing the components; the mixture is fully melt-blended in a double-screw extruder, and the antistatic masterbatch is obtained after extrusion, cooling and granulation. The processing temperature of the double-screw extruder is as follows: the temperature of the first zone is 165 DEG C, the temperature of the second zone is 170 DEG C, the temperature of the third zone is 175 DEG C, the temperature of the fourth zone is 185 DEG C, the temperature of the fifth zone is 195 DEG C, the temperature of the sixth zone is 180 DEG C, the temperature of the seventh zone is 175 DEG C, the temperature of the eighth zone is 185 DEG C, the temperature of the ninth zone is 190 DEG C, the temperature of the die head is 195 DEG C, and the rotation speed of the main machine is 350 r / min.

[0084] The glass fiber reinforced polypropylene is prepared by weighing 75 parts of polypropylene and 25 parts of glass fiber, uniformly mixing the components, and fully melt-blending the mixture in a double-screw extruder, and the glass fiber reinforced polypropylene is obtained after extrusion, cooling and granulation. The processing temperature of the double-screw extruder is as follows: the temperature of the first zone is 175 DEG C, the temperature of the second zone is 180 DEG C, the temperature of the third zone is 185 DEG C, the temperature of the fourth zone is 195 DEG C, the temperature of the fifth zone is 205 DEG C, the temperature of the sixth zone is 190 DEG C, the temperature of the seventh zone is 185 DEG C, the temperature of the eighth zone is 195 DEG C, the temperature of the ninth zone is 200 DEG C, the temperature of the die head is 205 DEG C, and the rotation speed of the main machine is 350 r / min.

[0085] The long-acting antistatic glass fiber reinforced polypropylene composite material is prepared by weighing 70 parts of glass fiber reinforced polypropylene, 15 parts of antistatic masterbatch, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, and 1 part of magnesium stearate, uniformly mixing the components, and fully melt-blending the mixture in a double-screw extruder, and the long-acting antistatic glass fiber reinforced polypropylene composite material is obtained after extrusion, cooling and granulation. The processing temperature of the double-screw extruder is as follows: the temperature of the first zone is 165 DEG C, the temperature of the second zone is 170 DEG C, the temperature of the third zone is 175 DEG C, the temperature of the fourth zone is 185 DEG C, the temperature of the fifth zone is 195 DEG C, the temperature of the sixth zone is 180 DEG C, the temperature of the seventh zone is 175 DEG C, the temperature of the eighth zone is 185 DEG C, the temperature of the ninth zone is 190 DEG C, the temperature of the die head is 195 DEG C, the rotation speed of the main machine is 350 r / min, and the water passing length is 3 m.

[0086] Comparative Example 1

[0087] The long-acting antistatic glass fiber reinforced polypropylene composite material provided in the embodiment comprises the following components in parts by weight: 80 parts of glass fiber reinforced polypropylene, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, and 1 part of magnesium stearate.

[0088] The embodiment provides a preparation method of the long-acting antistatic glass fiber reinforced polypropylene composite material.

[0089] The glass fiber reinforced polypropylene is prepared by weighing 78 parts of polypropylene and 23 parts of glass fiber, uniformly mixing the polypropylene and the glass fiber, feeding the mixture into a double-screw extruder for sufficient melt blending, and obtaining the glass fiber reinforced polypropylene after extrusion, cooling and granulation. The processing temperature of the double-screw extruder is as follows: the temperature of a first zone is 175 DEG C, the temperature of a second zone is 180 DEG C, the temperature of a third zone is 185 DEG C, the temperature of a fourth zone is 195 DEG C, the temperature of a fifth zone is 205 DEG C, the temperature of a sixth zone is 190 DEG C, the temperature of a seventh zone is 185 DEG C, the temperature of an eighth zone is 195 DEG C, the temperature of a ninth zone is 200 DEG C, the temperature of a die head is 205 DEG C, and the rotation speed of a main machine is 350 r / min.

[0090] The glass fiber reinforced polypropylene, the antioxidant 1010, the antioxidant 168 and the magnesium stearate are uniformly mixed; the mixture is fed into a double-screw extruder for sufficient melt blending, and the long-acting antistatic glass fiber reinforced polypropylene composite material is obtained after extrusion, cooling and granulation. The processing temperature of the double-screw extruder is as follows: the temperature of a first zone is 165 DEG C, the temperature of a second zone is 170 DEG C, the temperature of a third zone is 175 DEG C, the temperature of a fourth zone is 185 DEG C, the temperature of a fifth zone is 195 DEG C, the temperature of a sixth zone is 180 DEG C, the temperature of a seventh zone is 175 DEG C, the temperature of an eighth zone is 185 DEG C, the temperature of a ninth zone is 190 DEG C, the temperature of a die head is 195 DEG C, the rotation speed of a main machine is 350 r / min, and the water passing length is 3 m.

[0091] Comparative example 2

[0092] The long-acting antistatic glass fiber reinforced polypropylene composite material provided in the embodiment comprises the following components in parts by weight: 80 parts of glass fiber reinforced polypropylene, 20 parts of carbon black, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, and 1 part of magnesium stearate.

[0093] The embodiment provides a preparation method of the long-acting antistatic glass fiber reinforced polypropylene composite material.

[0094] Preparation of glass fiber reinforced polypropylene: 78 parts of polypropylene and 23 parts of glass fiber are mixed uniformly, and the mixture is put into a twin-screw extruder for sufficient melt blending, and then the glass fiber reinforced polypropylene is obtained after extrusion, cooling and granulation. The processing temperature of the twin-screw extruder is: the temperature of the first zone is 175°C, the temperature of the second zone is 180°C, the temperature of the third zone is 185°C, the temperature of the fourth zone is 195°C, the temperature of the fifth zone is 205°C, the temperature of the sixth zone is 190°C, the temperature of the seventh zone is 185°C, the temperature of the eighth zone is 195°C, the temperature of the ninth zone is 200°C, the temperature of the die head is 205°C, and the rotation speed of the main machine is 350 rpm.

[0095] 80 parts of glass fiber reinforced polypropylene, 20 parts of carbon black, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, and 1 part of magnesium stearate are mixed uniformly; the mixture is put into a twin-screw extruder for sufficient melt blending, and then the long-acting antistatic glass fiber reinforced polypropylene composite material is obtained after extrusion, cooling and granulation. The processing temperature of the twin-screw extruder is: the temperature of the first zone is 165°C, the temperature of the second zone is 170°C, the temperature of the third zone is 175°C, the temperature of the fourth zone is 185°C, the temperature of the fifth zone is 195°C, the temperature of the sixth zone is 180°C, the temperature of the seventh zone is 175°C, the temperature of the eighth zone is 185°C, the temperature of the ninth zone is 190°C, the temperature of the die head is 195°C, the rotation speed of the main machine is 350 rpm, and the water passing length is 3 m.

[0096] Comparative Example 3

[0097] The long-acting antistatic glass fiber reinforced polypropylene composite material provided in this embodiment comprises the following components in parts by weight: 80 parts of glass fiber reinforced polypropylene, 10 parts of carbon black, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, and 1 part of magnesium stearate.

[0098] The preparation method of the long-acting antistatic glass fiber reinforced polypropylene composite material provided in this embodiment comprises:

[0099] Preparation of glass fiber reinforced polypropylene: 78 parts of polypropylene and 23 parts of glass fiber are mixed uniformly, and the mixture is put into a twin-screw extruder for sufficient melt blending, and then the glass fiber reinforced polypropylene is obtained after extrusion, cooling and granulation. The processing temperature of the twin-screw extruder is: the temperature of the first zone is 175°C, the temperature of the second zone is 180°C, the temperature of the third zone is 185°C, the temperature of the fourth zone is 195°C, the temperature of the fifth zone is 205°C, the temperature of the sixth zone is 190°C, the temperature of the seventh zone is 185°C, the temperature of the eighth zone is 195°C, the temperature of the ninth zone is 200°C, the temperature of the die head is 205°C, and the rotation speed of the main machine is 350 rpm.

[0100] Take 80 parts of glass fiber reinforced polypropylene, 10 parts of carbon black, 0.1 parts of antioxidant 1010, 0.1 parts of antioxidant 168, 1 parts of magnesium stearate, mix uniformly; the mixture is put into a double screw extruder for sufficient melt blending, after extrusion, cooling and granulation, the long-acting antistatic glass fiber reinforced polypropylene composite material is obtained. The processing temperature of the double screw extruder is: the temperature of the first zone is 165℃, the temperature of the second zone is 170℃, the temperature of the third zone is 175℃, the temperature of the fourth zone is 185℃, the temperature of the fifth zone is 195℃, the temperature of the sixth zone is 180℃, the temperature of the seventh zone is 175℃, the temperature of the eighth zone is 185℃, the temperature of the ninth zone is 190℃, the temperature of the die head is 195℃, the rotation speed of the main machine is 350r / min, and the water passing length is 3m.

[0101] The formula of each of the above examples and comparative examples is shown in Table 1, and the corresponding test performance is shown in Table 2.

[0102] The formula of each of the above examples and comparative examples is shown in Table 1, and the corresponding test performance is shown in Table 2.

[0103]

[0104]

[0105] The test results of each of the above examples and comparative examples are shown in Table 2.

[0106]

[0107] The core of the conductive network construction mechanism of the present application is that the nano ATO (antimony doped to provide free electrons) realizes charge conduction through thermal excitation transition, and its humidity insensitivity is significantly better than that of organic antistatic agents which depend on water film. The glass fiber forms a macroscopic conductive skeleton in the matrix, and the pre-dispersed nano ATO uniformly coats the surface of the glass fiber through the master batch process, and fills the gap between the fibers to form a path. This "fiber-particle" double network structure effectively avoids the physical barrier of high glass fiber content to the conductive path, so that the percolation threshold is reduced to 10wt% of the master batch (corresponding to 1.5wt% of nano ATO), and the surface resistance is reduced from >10 12 Ω to 10 7-8 Ω.

[0108] At the same time, the appropriate amount of added nano ATO not only gives the material antistatic ability, but also plays a nucleating role in the polypropylene matrix, inducing the formation of more detailed and uniform spherulite structure, thereby optimizing the stress distribution of the matrix and improving the impact performance. The data show that the impact strength in Example 1 reaches 14.95kJ / m 2 , which is higher than that of Comparative Example 1 (11.61kJ / m 2) The increase of more than 28% shows that the nano-ATO has a significant effect on the improvement of material toughness. In addition, the magnesium stearate introduced in the formula forms an interfacial lubricating layer between the glass fiber and the PP matrix, which can reduce the stress concentration when the fiber is pulled out, further improve the interfacial bonding strength, and synergistically improve the overall mechanical properties.

[0109] From the comprehensive performance data, the composite material in the example not only has good antistatic effect, but also has excellent mechanical properties, with the lowest surface resistivity of 10 6 -10 8 Ω·cm, and the highest heat distortion temperature of 148.2°C, which is much better than the carbon black high-filled sample. At the same time, the melt index is maintained between 9.7-11.2 g / 10 min, indicating that the function is improved while maintaining the processing fluidity. By contrast, the carbon black system can partially improve the electrical conductivity at high filling, but significantly sacrifices the impact strength and melt flowability, for example, the impact strength of Comparative Example 2 is only 7.3 kJ / m 2 , and the melt index is reduced to 5.2 g / 10 min, showing the obvious disadvantage of traditional high-filled carbon black scheme in performance balance.

[0110] Unless specifically stated otherwise, the relative arrangement of parts and steps in these embodiments, numerical expressions, and numerical values are not meant to limit the scope of the present application. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in proportion. The technology, methods and equipment known to those skilled in the relevant art can not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of contrary statements, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of the parts themselves.

[0111] For purposes of the description hereinafter, spatial or directional terms, for example, "above", "below", "upper", "lower", and the like, can be used, and relate to the device as illustrated in the figures. However, it is to be understood that no absolute or relative orientation of the device is intended or implied, unless specifically described as such. Terms concerning attachments, coupling and the like, such as "connected" and "coupled" and the like, are to be construed in accordance with their normal meanings, that is, as referring to an indirect or direct connection or coupling. Any reference to "comprising" or "containing" is to be construed as meaning "comprising or containing, but not limited to". Any reference to "comprising" or "containing" is to be construed as meaning "comprising or containing, but not limited to".

[0112] In addition, it should be pointed out that the use of "first", "second" and the like words to qualify parts, is only intended to facilitate the distinction of the corresponding parts, and does not have a special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0113] The preferred embodiments of the present application are described above, and are not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A long-lasting antistatic glass fiber reinforced polypropylene composite material, characterized in that, It comprises the following components in parts by weight: 70-90 parts glass fiber reinforced polypropylene, 10-20 parts antistatic masterbatch, 0.1-0.5 parts antioxidant, and 0.5-1 parts magnesium stearate; wherein the antistatic masterbatch comprises the following components in parts by weight: 80-85 parts polypropylene base material, 15-20 parts nano ATO, 2-3 parts polyethylene wax dispersant, and 0.5-1 parts lubricant.

2. The long-lasting antistatic glass fiber reinforced polypropylene composite material according to claim 1, characterized in that, The nano-ATO has a particle size of 10-50 nm, and the molar ratio of tin oxide to antimony oxide in the nano-ATO is 95:

5.

3. The long-lasting antistatic glass fiber reinforced polypropylene composite material according to claim 1, characterized in that, The glass fiber content in the glass fiber reinforced polypropylene is 21wt%-25wt%.

4. A method for preparing a long-lasting antistatic glass fiber reinforced polypropylene composite material, characterized in that, include: 70-90 parts of glass fiber reinforced polypropylene, 10-20 parts of antistatic masterbatch, 0.1-0.5 parts of antioxidant, and 0.5-1 parts of magnesium stearate are fed into an extruder and fully melt-blended. After extrusion, cooling, and pelletizing, the long-lasting antistatic glass fiber reinforced polypropylene composite material is obtained. The antistatic masterbatch comprises the following components in parts by weight: 80-85 parts polypropylene substrate, 15-20 parts nano-ATO, 2-3 parts polyethylene wax dispersant, and 0.5-1 part lubricant.

5. The method for preparing a long-lasting antistatic glass fiber reinforced polypropylene composite material according to claim 4, characterized in that, The extruder is a twin-screw extruder. When preparing the long-lasting antistatic glass fiber reinforced polypropylene composite material, the processing temperatures of the twin-screw extruder are as follows: Zone 1: 165℃; Zone 2: 170℃; Zone 3: 175℃; Zone 4: 185℃; Zone 5: 195℃; Zone 6: 180℃; Zone 7: 175℃; Zone 8: 185℃; Zone 9: 190℃; Die head temperature: 195℃; and main extruder speed: 350 rpm.

6. The method for preparing a long-lasting antistatic glass fiber reinforced polypropylene composite material according to claim 4, characterized in that, The preparation of the antistatic masterbatch includes: 80-85 parts of polypropylene substrate, 15-20 parts of nano-ATO, 2-3 parts of polyethylene wax dispersant, and 0.5-1 parts of lubricant are fed into an extruder and fully melted and blended. After extrusion, cooling, and pelletizing, the antistatic masterbatch is obtained.

7. The method for preparing a long-lasting antistatic glass fiber reinforced polypropylene composite material according to claim 6, characterized in that, The extruder is a twin-screw extruder. When preparing the antistatic masterbatch, the processing temperatures of the twin-screw extruder are as follows: Zone 1: 165°C; Zone 2: 170°C; Zone 3: 175°C; Zone 4: 185°C; Zone 5: 195°C; Zone 6: 180°C; Zone 7: 175°C; Zone 8: 185°C; Zone 9: 190°C; Die head temperature: 195°C; and main extruder speed: 350 rpm.

8. The method for preparing a long-lasting antistatic glass fiber reinforced polypropylene composite material according to claim 4, characterized in that, The preparation method of the glass fiber reinforced polypropylene includes: Mix 75-79 parts of polypropylene and 21-25 parts of glass fiber evenly, put them into an extruder for full melt blending, and then extrude, cool, and pelletize to obtain the glass fiber reinforced polypropylene.

9. The method for preparing a long-lasting antistatic glass fiber reinforced polypropylene composite material according to claim 8, characterized in that, The extruder is a twin-screw extruder. When preparing the glass fiber reinforced polypropylene, the processing temperatures of the twin-screw extruder are as follows: Zone 1: 175℃; Zone 2: 180℃; Zone 3: 185℃; Zone 4: 195℃; Zone 5: 205℃; Zone 6: 190℃; Zone 7: 185℃; Zone 8: 195℃; Zone 9: 200℃; Die head temperature: 205℃; and main extruder speed: 350 rpm.

10. An application of a long-lasting antistatic glass fiber reinforced polypropylene composite material, characterized in that, The long-lasting antistatic glass fiber reinforced polypropylene composite material according to any one of claims 1-3 is used in packaging, automotive parts, building pipes, and daily necessities.

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