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Internally-plasticized antistatic polyformaldehyde material and preparation method thereof

A polyoxymethylene material and antistatic technology, applied in the field of polyoxymethylene materials and their preparation, can solve the problems of reduced thermal stability of the mechanical properties of polyoxymethylene materials, and achieve excellent chemical and thermal stability, smaller size, and simple industrial preparation. Effect

Active Publication Date: 2017-09-05
安徽贺赢新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of the above nucleating agents can improve the crystallization properties of polyoxymethylene, but most of the nucleating agents will reduce the mechanical properties and thermal stability of polyoxymethylene materials to varying degrees due to dispersion, stability, and processability problems. Therefore, choosing a suitable nucleating agent is the key to improving the crystallinity of polyoxymethylene

Method used

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  • Internally-plasticized antistatic polyformaldehyde material and preparation method thereof
  • Internally-plasticized antistatic polyformaldehyde material and preparation method thereof
  • Internally-plasticized antistatic polyformaldehyde material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Step (1): POM and tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt were vacuum-dried at 80°C for 24 hours;

[0066] Step (2): Add 100g of dried polyoxymethylene and 0.25g of tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt to an internal mixer for melting and mixing at 190°C. The rotor speed is 20rpm, melt kneading for 2min, then increase the rotor speed to 50rpm, melt kneading for 5min, to obtain the mixture:

[0067] In step (3), the mixture is discharged from the melting and kneading equipment and cooled to room temperature to obtain a polyoxymethylene material.

[0068] The mass ratio of polyoxymethylene and tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt in the polyoxymethylene material prepared in Example 1 is 100:0.25

[0069] The test results of the samples are shown in Table 1

Embodiment 2

[0071] Step (1): POM and tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt were vacuum-dried at 80°C for 24 hours;

[0072] Step (2): Add 100g of dried polyoxymethylene and 0.5g of tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt to an internal mixer for melting and mixing at 190°C. The rotor speed is 20rpm, melt kneading for 2min, then increase the rotor speed to 50rpm, melt kneading for 5min, to obtain the mixture:

[0073] In step (3), the mixture is discharged from the melting and kneading equipment and cooled to room temperature to obtain a polyoxymethylene material.

[0074] The mass ratio of polyoxymethylene and tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt in the polyoxymethylene material prepared in Example 2 is 100:0.5

[0075] The test results of the samples are shown in Table 1

Embodiment 3

[0077] Step (1): POM and tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt were vacuum-dried at 80°C for 24 hours;

[0078] Step (2): Add 100g of dried polyoxymethylene and 1g of tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt into the internal mixer at 190°C for melting and mixing. The rotor speed is 20rpm, melt kneading for 2min, then increase the rotor speed to 50rpm, melt kneading for 5min, to obtain the mixture:

[0079] In step (3), the mixture is discharged from the melting and kneading equipment and cooled to room temperature to obtain a polyoxymethylene material.

[0080] The mass ratio of polyoxymethylene and tri-n-butyloctylphosphine bis(trifluoromethanesulfonyl)imide salt in the polyoxymethylene material prepared in Example 3 is 100:1

[0081] The test results of the samples are shown in Table 1

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Abstract

The invention discloses an internally-plasticized antistatic polyformaldehyde material and a preparation method thereof. The polyformaldehyde material is a mixture of polyformaldehyde and ironic liquid. The preparation method comprises the following steps: respectively carrying out vacuum drying on polyformaldehyde and ironic liquid at 80-120 DEG C for 24-48 hours; adding the dried polyformaldehyde and ironic liquid into fusion mixing equipment in a mass ratio of 100 to (0.01-10), and carrying out fusion mixing at 170-200 DEG C, so as to obtain a mixture; and discharging the mixture out of the fusion mixing equipment, and cooling to the room temperature, so as to obtain the polyformaldehyde material. The polyformaldehyde material disclosed by the invention has excellent antistatic performance; by adding ironic liquid, the size of a spherocrystal of a polyformaldehyde matrix can be effectively reduced, so that a certain plasticization effect is achieved; and only common fusion mixing equipment is used in the preparation method, so that the industrial preparation is simple.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a polyoxymethylene material with both antistatic and internal plasticizing functions obtained through ionic liquids and a preparation method thereof. Background technique [0002] Polyoxymethylene (POM, polyformaldehyde) is a thermoplastic engineering plastic with excellent comprehensive properties. Because it has the hardness, strength and rigidity similar to metal, the strength per unit mass is higher than most metals, so it is called "Sai Steel". Generally speaking, polyoxymethylene has good oil resistance, corrosion resistance, chemical resistance, wear resistance and self-lubrication, creep resistance and low water absorption, and outstanding fatigue resistance. In addition, it has good cost performance and the potential of physical modification and chemical modification, and is an important engineering plastic variety with excellent comprehensive perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L59/00C08K5/50C08K5/44C08K5/42C08K5/3445C08K5/3432C08K5/19C08K5/3415
CPCC08K5/19C08K5/3415C08K5/3432C08K5/3445C08K5/42C08K5/44C08K5/50C08L2201/04C08L2201/08C08L2205/24C08L59/00
Inventor 李勇进顾森林
Owner 安徽贺赢新材料科技有限公司
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