CN110628210A - Transparent antistatic nylon material and preparation method thereof - Google Patents

Abstract

The invention discloses a transparent antistatic nylon material and a preparation method thereof, wherein the transparent antistatic nylon material comprises 71-77% of transparent nylon, 0-27% of antistatic agent, antioxidant, lubricant and toner. It utilizes refractive index, material polarity, melting point and decomposition temperature to select proper antistatic agent. It utilizes refractive index, material polarity, melting point and decomposition temperature to select proper antistatic agent.

Description

Transparent antistatic nylon material and preparation method thereof

Technical Field

The invention relates to the field of polymer composite materials, in particular to a transparent antistatic nylon material and a preparation method thereof.

Background

At present, many antistatic polymer composite materials are available in companies and markets, but optical transparent antistatic polymer materials are rare, and transparent antistatic polymer materials which can be prepared by the prior art mainly comprise ABS, PMMA and PP.

Because only ABS, PMMA and PP transparent antistatic materials are available at present, the available materials for products meeting ATEX explosion-proof requirements when the materials are used for packaging electronic and semiconductor materials are too few to meet more performance requirements.

In addition to ABS, PP and PMMA, transparent resins known by us include PETG, PCTG, transparent nylon, PSU, PC, PES, PS, COC and the like. If we can develop more transparent antistatic polymer materials, then I have more choices in designing antistatic packaging materials and meeting ATEX products, and design freedom and product performance are improved.

Transparent nylon has been used in a large number of applications because of its transparency (up to 90%), excellent chemical resistance, and high mechanical strength.

The invention aims to prepare a transparent antistatic nylon material by selecting an antistatic agent with a refractive index close to that of transparent nylon by utilizing an optical transparency principle, namely a refractive index matching principle, mixing and granulating by utilizing an extruder, preparing a sample by utilizing an injection molding machine and testing the performance of the material by utilizing an optical instrument, a resistance meter and a mechanical performance testing instrument.

The technical problems solved by the invention are as follows:

1. the refractive index, material polarity, melting point and decomposition temperature are used to select a suitable antistatic agent.

2. The appropriate manufacturing process is selected based on the polarity, melting point and decomposition temperature of the material.

3. The performance of the material is as follows: the surface resistivity is between 1E8 and 1E12ohm/sq, and the transparency reaches more than 65 percent (the material thickness is 3.2 mm).

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the invention provides a transparent antistatic nylon material and a preparation method thereof, wherein a proper antistatic agent is selected by utilizing the refractive index, the material polarity, the melting point and the decomposition temperature.

In order to achieve the above object, an embodiment of the present application discloses a transparent antistatic nylon material, including: 71-77% of transparent nylon, 0-27% of antistatic agent, antioxidant, lubricant and toner.

Preferably, the nylon material further comprises an antistatic promoter, the antistatic promoter is C4 fluoride, and the proportion of the antistatic promoter is 0-0.5%.

Preferably, the antistatic agent is a polyetheramide block copolymer.

Preferably, the ratio of the antioxidant to the toner is 0.4%.

The embodiment of the application discloses a transparent antistatic nylon material, which comprises the following steps:

premixing transparent nylon, an antistatic agent, an antistatic accelerator, an antioxidant and toner to obtain a material;

putting the materials into an extruder, extruding the materials by a mixing process, and then extruding the materials by a double-screw extruder for granulation, wherein the temperature of the mixing process is 240-280 ℃.

Preferably, the temperature of the mixing process is 240-280 ℃.

The invention has the following beneficial effects:

1. the antistatic performance is stable and durable, the surface resistivity is between 1E8 and 1E12ohms/sq, and the antistatic performance is not influenced by the environmental humidity;

2. the light transmittance is high, and the light transmittance of a material with the thickness of 3.2mm can reach more than 65%; the thinner the product, the higher the light transmittance.

In order to make the aforementioned and other objects, features and advantages of the invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to achieve the above object, the present invention provides a transparent antistatic nylon material, comprising: 71 to 77 percent of transparent nylon, 0 to 27 percent of antistatic agent, antioxidant, lubricant and toner.

Further, the nylon material also comprises an antistatic accelerant, wherein the antistatic accelerant is C4 fluoride, and the proportion of the antistatic accelerant is 0-0.5%.

Further, the antistatic agent is a polyether amide block copolymer.

Further, the ratio of the antioxidant to the toner is 0.4%.

The invention provides a preparation method of a transparent antistatic nylon material, which comprises the following steps:

premixing transparent nylon, an antistatic agent, an antistatic accelerator, an antioxidant and toner to obtain a material;

putting the materials into an extruder, extruding the materials by a mixing process, and then extruding the materials by a double-screw extruder for granulation, wherein the temperature of the mixing process is 240-280 ℃.

Further, the temperature of the mixing process is 240-280 ℃.

Example 1

The preparation method comprises the steps of premixing 71.8% of transparent nylon, 27.3% of antistatic agent, 0.9% of antioxidant and toner, putting the premixed materials into an extruder, mixing at 260 ℃, extruding and granulating by using a double-screw extruder, wherein the double screw extruder is mainly used for conveying, and a small number of kneading blocks are designed on thread blocks of the double screw extruder to ensure that the antistatic agent is uniformly dispersed.

The resulting nylon material was tested according to test method ASTM D257, test data set table 1.

TABLE 1

The test data shows that compared with the traditional antistatic nylon, the light transmittance of the antistatic nylon obtained in the embodiment is obviously improved, the surface resistivity is also superior to that of the traditional antistatic nylon, the tensile strength and the bending modulus are lower than those of the traditional antistatic nylon, and the notch impact strength is obviously higher than that of the traditional antistatic nylon.

Example 2

The preparation method comprises the steps of premixing 77.8% of transparent nylon, 21.4% of antistatic agent, 0.4% of C4 fluoride, 0.4% of antioxidant and toner, then putting the mixture into an extruder, mixing at 250 ℃, and extruding and granulating by using a double-screw extruder, wherein the double screw extruder is mainly used for conveying, and a small number of kneading blocks are designed on a thread block of the double screw extruder to ensure that the antistatic agent is uniformly dispersed.

The resulting nylon material was tested according to test method ASTM D257, test data set table 2.

TABLE 2

As can be seen from the test data, the light transmittance of the antistatic nylon obtained in the embodiment is significantly increased compared with that of the conventional antistatic nylon; the surface resistivity is superior to that of the traditional antistatic nylon; the tensile strength is equivalent to that of the traditional antistatic nylon; the notch impact strength is higher than that of the traditional antistatic nylon, and the bending modulus is lower than that of the traditional antistatic nylon. Example 3

The antistatic agent is prepared by premixing 75% of transparent nylon, 24.5% of antistatic agent, 0.5% of C4 fluoride, 0.4% of antioxidant and toner, then putting the premixed materials into an extruder, mixing the premixed materials at 270 ℃, and extruding and granulating the premixed materials by using a double-screw extruder, wherein the double screws mainly carry the materials, and a small number of kneading blocks are designed on thread blocks of the double screws so as to ensure that the antistatic agent is uniformly dispersed.

The resulting nylon material was tested according to test method ASTM D257, test data set table 3.

TABLE 3

As can be seen from the test data, compared with the traditional nylon material, the nylon material obtained in the embodiment has obviously increased light transmittance, surface resistivity superior to that of the traditional antistatic nylon, tensile strength equivalent to that of the traditional antistatic nylon, and notch impact strength obviously higher than that of the traditional antistatic nylon.

Example 4

Premixing 74.6% of transparent nylon, 25% of antistatic agent, 0.4% of antioxidant and toner, then putting the mixture into an extruder, mixing at 260 ℃, extruding and granulating by using a double-screw extruder, wherein the double screw extruder is mainly used for conveying, and a small amount of kneading blocks are designed on a thread block of the double screw extruder to ensure that the antistatic agent is uniformly dispersed.

The resulting nylon material was tested according to test method ASTM D257, test data set table 4.

TABLE 4

The test data shows that compared with the traditional nylon material, the nylon material obtained in the embodiment has obviously improved light transmittance, lower bending modulus than that of the traditional nylon material, higher impact strength than that of the traditional antistatic nylon, and higher surface resistivity than that of the traditional antistatic material.

The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (6)

1. A transparent antistatic nylon material, characterized in that the nylon material comprises:

71 to 77 percent of transparent nylon, 0 to 27 percent of antistatic agent, antioxidant, lubricant and toner.

2. The transparent antistatic nylon material of claim 1 further comprising an antistatic promoter, wherein the antistatic promoter is C4 fluoride, and the proportion of the antistatic promoter is 0-0.5%.

3. The transparent antistatic nylon material of claim 1 wherein the antistatic agent is a polyetheramide block copolymer.

4. The transparent antistatic nylon material of claim 1 wherein the ratio of the antioxidant to the toner is 0.4%.

5. A preparation method for producing the transparent antistatic nylon material as described in any one of claims 1 to 4, characterized by comprising the steps of:

premixing transparent nylon, an antistatic agent, an antistatic accelerator, an antioxidant and toner to obtain a material;

putting the materials into an extruder, extruding the materials by a mixing process, and then extruding the materials by a double-screw extruder for granulation, wherein the temperature of the mixing process is 240-280 ℃.

6. The method as claimed in claim 5, wherein the temperature of the mixing process is 240-280 ℃.