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Method for preparing antistatic macromolecule material

A polymer material and antistatic technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as increasing process complexity and affecting material performance, and achieve process stability, promote dispersion stability, and simple process effects

Inactive Publication Date: 2007-12-26
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in plastic processing, dispersants are rarely used alone, and it is often necessary to compound some coupling agents, compatibilizers or lubricants to improve the dispersion of fillers such as carbon black, which not only increases the complexity of the process, but also may cause Final material properties are affected

Method used

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  • Method for preparing antistatic macromolecule material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0023] Embodiment 1-2 (adopting above-mentioned preparation method (1)):

[0024] Add fully dried polypropylene (F401), dispersant (Altfona3050 or Altfona3020) and conductive carbon black (DBP absorption value 168.6ml / 100g) into the Haake torque rheometer according to the ratio in Table 1, at 190 ° C The processing temperature and the rotor speed of 64rpm were mixed for 10 minutes to obtain an antistatic PP polymer material. The antistatic PP polymer material obtained by banburying was preheated on a 15MPa press at 190°C for 15mins, hot pressed for 10min, and then cold pressed for 5min to prepare a test piece with a thickness of 1mm and a size of 10*10mm. The volume resistivity was tested according to the GB1410-78 standard, and the results are shown in Table 1.

[0025] Comparative Examples 1-2 are samples without conductive carbon black and dispersant, and other preparation and testing conditions are the same as those of Examples 1-2. The volume resistivity test results are...

Embodiment 3-5

[0029] Embodiment 3-5 (adopting above-mentioned preparation method (1)):

[0030]Fully dried linear low density polyethylene (LL0220AA), dispersant (Altfona3050) and conductive carbon black (DBP absorption value 168.6ml / 100g) were added in the Haake torque rheometer according to the ratio in Table 2, at 160 °C processing temperature and 64rpm rotor speed for 10min banburying, to obtain antistatic PE polymer material. The antistatic PE polymer material obtained by banburying was preheated on a 15MPa press at 160°C for 15mins, hot pressed for 10min, and then cold pressed for 5min to prepare a test piece with a thickness of 1mm and a size of 10*10mm. The volume resistivity was tested according to the GB1410-78 standard, and the results are shown in Table 2.

[0031] Comparative Examples 3-4 are samples without conductive carbon black and dispersant, and other preparation and testing conditions are the same as those of Examples 3-5. The volume resistivity test results are shown i...

Embodiment 6-7

[0035] Embodiment 6-7 (adopting above-mentioned preparation method (2)):

[0036] Fully dried polycarbonate (CALIBRE * ), dispersant (Altfona3050 or Altfona3020) was added to the Haake torque rheometer according to the ratio in Table 2, melted and blended for 1 minute at a processing temperature of 240 ° C and a rotor speed of 64 rpm, and then according to the amount in Table 2 Conductive carbon black (DBP absorption value 168.6ml / 100g) was added to a Haake torque rheometer and banburyed for 10 minutes to obtain an antistatic PC polymer material. The antistatic PC polymer material obtained by banburying was preheated on a 15MPa press at 240°C for 15mins, hot pressed for 10min, and then cold pressed for 5min to prepare a test piece with a thickness of 1mm and a size of 10*10mm. The volume resistivity was tested according to the GB1410-78 standard, and the results are shown in Table 3.

[0037] Comparative Examples 5-6 are samples without conductive carbon black and dispersant...

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Abstract

This invention discloses a method for preparing an antistatic polymer material, which is composed of thermoplastic resin, dispersant and conductive carbon black. The method comprises: (1) uniformly mixing dried thermoplastic resin and dispersant, adding into a Banbury mixer, melting, blending, adding conductive carbon black, and mixing; or (2) uniformly mixing dried thermoplastic resin, dispersant and conductive carbon black, adding into a Banbury mixer, and mixing to obtain the antistatic polymer material. During the mixing process, the dispersion stability of conductive carbon black in the matrix resin is enhanced by the dispersant. Uniformly dispersed conductive carbon black fine particles are advantageous for tunnel effect, thus the volume resistance of the material is reduced and maintained uniform and stable. The method is simple. Antistatic polymer material with variable volume resistance (105-1011) can be obtained by adjusting the addition amount of the dispersant with that of conductive carbon black maintained 10 parts.

Description

Technical field: [0001] The invention relates to a preparation method of a polymer material, in particular to a preparation method of an antistatic polymer material. Background technique: [0002] With its excellent cost performance, polymer materials are widely used in various fields of national economy and people's daily life. The volume resistivity of most plastics is generally in the range of 10 17 ~10 19 Ω cm, with excellent electrical insulation properties, such as polypropylene PP, polyethylene PE, etc. However, its insulation sometimes encounters troubles in many occasions. For example, when manufacturing PE and BOPP films, electric shocks are prone to occur; static electricity can also cause plastic products to absorb dust easily, and static sparks can even cause accidents such as explosions and fires. The earth limits the application of plastics in electronics, petrochemical, medical and other industries. Therefore, eliminating and reducing the electrostatic ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/16C08L23/12C08L23/06C08L27/06C08L25/06C08L69/00C08L67/00C08L77/00C08L81/02C08L71/12C08L33/12C08K3/04
Inventor 党晓容张勇
Owner SHANGHAI JIAO TONG UNIV