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Permanent antistatic polypropylene material and preparation thereof

A polypropylene material and antistatic technology, which is applied in the field of permanent antistatic polypropylene material and its preparation, can solve the problems of material resistivity change, antistatic material life is limited, not permanent, etc., to achieve simple preparation method, antistatic Excellent electrostatic effect

Inactive Publication Date: 2009-06-24
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this method are: under relatively dry conditions, the method will fail due to the limited moisture absorbed by the surface; as the surfactant or other hydrophilic substances will slowly migrate to the surface layer of the material, resulting in the surface of the material The amount of active agent or other hydrophilic substances is less and less, and the life of antistatic materials prepared by this antistatic method is limited, not permanent
The current hot spot is the blending of polypropylene and carbon black. The preparation technology of this antistatic material can solve the above two problems, but the addition of carbon black makes the mechanical properties of polypropylene worse; the most important thing is carbon black The slope of the relationship curve between the addition amount of carbon black and the resistivity of the material is particularly steep. Near a certain critical value, a little more or less addition of carbon black will cause a large change in the resistivity of the material, which will not reach people Resistivity required, especially for higher resistivity materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 0.8 parts of dodecylbenzenesulfonic acid and 0.4 parts of intrinsic polyaniline into a mixer, stir at 50° C. for 10 hours, cool and discharge to obtain polyaniline doped with dodecylbenzenesulfonic acid. 98.7 parts of polypropylene, 0.1 part of chlorinated polypropylene (10% chlorine content), 1.2 parts of polyaniline doped with dodecylbenzenesulfonic acid, 4-hydroxymethyl-2,6-di-tert-butylphenol Add 0.1 part into a high-speed mixer, stir and mix for 5 minutes at a temperature of 40°C, then melt and blend with a twin-screw extruder at a temperature of 180°C, and finally process it into a product by molding. The properties of the obtained materials are shown in Table 1.

Embodiment 2

[0034] Add 6.0 parts of dodecylbenzenesulfonic acid and 5.9 parts of intrinsic polyaniline into a mixer, stir at 30° C. for 48 hours, cool and discharge to obtain polyaniline doped with dodecylbenzenesulfonic acid. 83.7 parts of polypropylene, 4.4 parts of chlorinated polypropylene (31% chlorine content), 11.9 parts of polyaniline doped with dodecylbenzenesulfonic acid, tris(2,4-di-tert-butylphenyl) phosphorous acid Add 0.1 part of the ester into a high-speed mixer, stir and mix for 5 minutes at a temperature of 40°C, then melt and blend with a double stick at a temperature of 170°C, and finally process it into a product by molding. The properties of the obtained materials are shown in Table 1.

Embodiment 3

[0036] Add 8.8 parts of dodecylbenzenesulfonic acid and 3.1 parts of intrinsic polyaniline into a mixer, stir at 30° C. for 48 hours, cool and discharge to obtain polyaniline doped with dodecylbenzenesulfonic acid. 79.3 parts of polypropylene, 8.8 parts of chlorinated polypropylene (31% chlorine content), 11.9 parts of polyaniline doped with dodecylbenzenesulfonic acid, 4-hydroxymethyl-2,6-di-tert-butylphenol Add 1 part into a high-speed mixer, stir and mix for 5 minutes at a temperature of 40°C, then melt and blend with a double stick at a temperature of 180°C, and finally process it into a product by molding. The properties of the obtained materials are shown in Table 1.

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Abstract

The invention discloses a permanent antistatic polypropylene material and a preparation method thereof. The invention is characterized in that 50 weight portions to 99 weight portions of polypropylene, 0.1 weight portion to 30 weight portions of compatilizer, 1 weight portion to 30 weight portions of antistatic agent and 0.1 weight portion to 1 weight portion of antioxidant are added into a high-speed mixer, stirred and mixed for 2 to 8 minutes at the temperature of 20 to 60 DEG C, then fused and blended by a mill or a screw extruder at the temperature of 160 to 190 DEG C and processed into a finished product by the technique of die pressing and extrusion molding. The volume resistivity and the surface resistivity of the obtained polypropylene material are reduced by 1 to 5 orders of magnitude, the mechanical property is not changed basically and the antistatic effect is excellent.

Description

technical field [0001] The invention relates to a permanent antistatic polypropylene material and a preparation method thereof, belonging to the field of polymer material processing. Background technique [0002] Polypropylene is a rising star among thermoplastics and one of the most important general-purpose polymer materials. Its density is 0.90g / cm 3 , is the second lightest polymer material in the existing resin (only greater than the density of 0.85g / cm 3 of polymethylpentene). Due to the rich source of polypropylene raw materials, low price, excellent performance, small specific gravity, and easy processing, it can be widely used in the automobile industry, household appliances, electronic instrument industry, and textile industry. Since it was first industrialized in Italy in 1957, its development speed has always ranked first among all kinds of plastics, and it is also the variety with the fastest growing demand among the five general-purpose plastics. Since 2000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L79/02C08L23/28C08K5/526C08K5/13B29B7/72B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/92895
Inventor 李惠林杨林陈金耀
Owner SICHUAN UNIV
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