A kind of method for preparing nano polyaniline and purposes
Technical field
The present invention relates to a kind of nano polyaniline, Preparation method and use, relate in particular to the synthetic of a kind of nano-anti static plastics additive polyaniline.
Background technology
Any object is all with static charge own, this electric charge can be that negative charge can be also positive charge, the gathering of static charge makes the harm that is affected even of life or industrial production, with harmful electric charge guiding of assembling/eliminate making its to produce/life brings inconvenience or the chemical that endangers is not called static inhibitor.According to the difference of use-pattern, static inhibitor can be divided into two kinds, outer spreading type and interior mixed type.The outer spreading type static inhibitor refers to be coated in a polymer surface class static inhibitor used.Generally with front first water or ethanol etc., it is deployed into the solution that massfraction is 0.5 %~2.0 %, then make it to be attached to polymer surface by coating, spraying or impregnating method, then form antistatic coating through room temperature or hot-air dry.This kind mostly is cationic static inhibitor, and some are also arranged is amphoteric and anionic antistatic agent; Interior mixed type static inhibitor refers to add to the class static inhibitor in resin in the course of processing of goods.
The static inhibitor that uses in the use for electronic products plastic packaging film at present; adopt the electrically conductive graphite micro mist; and the conductivity of electrically conductive graphite micro mist usually can be decayed along with the time, and the consistency of graphite and plastics is relatively poor can cause that also plastics film becomes fragile, and shock resistance is poor.
Because the defective that above-mentioned existing static inhibitor exists, the inventor is based on being engaged in this type of product design manufacturing abundant practical experience and expertise for many years, and coordinates the utilization of scientific principle, actively research and innovation in addition, to founding a kind of new anti-static agent, make it have more practicality.Through constantly research, design, and after repeatedly studying sample and improvement, finally create the present invention who has practical value.
Summary of the invention
Main purpose of the present invention is, overcome the defective that existing static inhibitor exists, and provide a kind of new anti-static agent, technical problem to be solved is that electroconductibility can not decay in time, and better with the consistency of plastics, thereby more be suitable for practicality, and have the utility value on industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of method for preparing nano polyaniline that the present invention proposes, this preparation method comprises the steps:
(1) get hydrochloric acid or sulfuric acid, generate the anilinechloride aqueous solution or aniline sulfate solution with aniline reaction;
(2) will atomize after the anilinechloride aqueous solution or aniline sulfate solution cool to room temperature;
(3) the anilinechloride aqueous solution or the aniline sulfate solution after the atomizing mixes with chlorine dioxide, and the anilinechloride in atomizing particle or aniline vitriol and chlorine dioxide reaction generate polyaniline;
(4) polyaniline that step (3) is obtained carries out drying treatment, namely obtains the polyaniline particle.
Aforesaid method for preparing nano polyaniline, in described step (1), the concentration of hydrochloric acid is 1.0 mol/L; Sulfuric acid concentration is 0.5 mol/L.
Aforesaid method for preparing nano polyaniline, in described step (1), the dosage of aniline is 0.25 mole.
Aforesaid method for preparing nano polyaniline, the mist particle diameter after described step (2) atomizing is processed is 0.2~1.5 micron.
Aforesaid method for preparing nano polyaniline, dry rear polyaniline particle diameter is in the scope of 20 nanometers ~ 80 nanometers.
Aforesaid nano polyaniline is as the purposes of static inhibitor.
Aforesaid static inhibitor, described static inhibitor specific conductivity can be controlled in 10
-1----10
1Between S/cm.
By technique scheme, static inhibitor of the present invention has following advantages at least:
Adopt the inventive method to prepare polyaniline, the preparation method is easy, uses less chemical feedstocks to obtain higher purity, and the polyaniline with preparation uses as static inhibitor simultaneously, specific conductivity 10
-1 ~10
1S/cm deposits the phenomenon that the specific conductivity decay can not occur in process, and is also fine with the consistency of plastics.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, for can clearer understanding technique means of the present invention, and can be implemented according to the content of specification sheets, below is described in detail as follows with preferred embodiment of the present invention.
Embodiment
Reach for further setting forth the present invention technique means and the effect that predetermined goal of the invention is taked, its embodiment of static inhibitor, feature and effect thereof to foundation the present invention proposes are described in detail as follows.
Embodiment 1
The preparation method of nano polyaniline of the present invention, adopt hydrochloric acid and 0.25 mole of aniline reaction of 0.5 liter of concentration 1 mol/L to form the anilinechloride aqueous solution, then cool to room temperature atomizes the anilinechloride aqueous solution, mist particle diameter after atomizing, 0.2~1.5 microns, mix the anilinechloride in atomizing particle and chlorine dioxide reaction with the oxygenant chlorine dioxide, generate polyaniline, after drying, obtain particle diameter in the uniform polyaniline antistatic powder of 20 ~ 80 nanometers, specific conductivity 10
-1----10
1S/cm.
Embodiment 2
The preparation method of nano polyaniline of the present invention, the sulfuric acid that to adopt 0.5 liter of concentration be 0.5 mol/L and the aniline reaction of 0.25 mole form the aniline sulfate solution, cool to room temperature, then the anilinechloride aqueous solution is atomized, mist particle diameter after atomizing: 0.2~1.5 micron, mix with the oxygenant chlorine dioxide, aniline vitriol and chlorine dioxide reaction in atomizing particle, generate polyaniline, after drying, obtain particle diameter in the uniform polyaniline antistatic powder of 0.03 ~ 0.1 micron, specific conductivity 10
-1----10
1S/cm.
The technological innovation of the static inhibitor of the present invention that above-mentioned structure like this consists of all has many saving graces for technician of the same trade now, and the progressive that really possesses skills.
the above, it is only preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.