CN105400073A - Preparation method for wear-resistant antistatic polypropylene film - Google Patents

Abstract

The invention discloses a preparation method for a wear-resistant antistatic polypropylene film, belonging to the field of thin film materials. According to the invention, the film is modified to reduce resistivity so as to inhibit accumulation of static charges from a source; and the produced film has good antistatic performance, has not obviously changed in the aspects of transparency, mechanical properties, elongation at break, gas barrier properties and printing performance, is good in appearance and glossiness, does not turn brittle and is applicable as packaging film or agricultural mulching film.

Description

A kind of preparation method of wear-resisting antistatic polypropylene film

Technical field

The invention discloses a kind of preparation method of wear-resisting antistatic polypropylene film, belong to thin film materials art.

Background technology

Macromolecular material has been widely used in the every field of national economy, becomes one of material closely bound up, indispensable in people's material life.Polypropylene (PP) is the good general-purpose plastics of a kind of over-all properties, it nineteen fifty-seven by Italian Montecatin company first suitability for industrialized production.Oneself becomes plastics variety with the fastest developing speed at present, and its output is only second to polyethylene and polyvinyl chloride, occupies the 3rd.Commercial polypropylene has homopolymerization and the large class of copolymerization two.Due to its abundance, cheap, good fluidity, be easy to processing, compared with other plastics, there is good over-all properties, be widely used in automobile, chemical industry, building, the industry such as electric.Such as, but namely also come with some shortcomings, shock strength is poor, low temperature brittleness, easily aging etc.; In addition, cause itself and most polymer compatibility poor because PP is nonpolar polymkeric substance, these shortcomings all seriously constrain its application.Therefore researchist both domestic and external has carried out research extensively and profoundly to its modification.Polyacrylic tough-increased and reinforced modification is the filling blend mode adopting heat-resistant powder filler, blended fiber, filler in the past more, but this often when expendable material in a certain respect performance the another aspect performance of material is improved.

Generally speaking the resistivity of macromolecular material is very high, is about 10 ¹⁰~ 10 ³⁰Ω cm.Plastics, as a kind of macromolecular material, have excellent electrical insulating property, with object contact, friction after being separated, owing to being difficult to the charge transfer of generation to be gone out, thus make surperficial accumulate static charge.Large absolutely number plastics have high resistivity and good electrical insulating property.Object is once after bringing electrostatic, although be sometimes with static content few, make troubles also can to the modern life and industrial production, or even serious economy and safety problem.Especially, when object institute carried charge can not be eliminated as early as possible and form a large amount of accumulation of static electricity, even electrostatic hazard can be caused.Polypropylene more easily produces static charge accumulation in macromolecule polymer material comparatively speaking.And once create accumulation of static electricity, its harm should not be underestimated.This can cause producing or course of processing mistake at polypropylene film, can be difficult to be disappeared by conduction because the reasons such as friction make electrostatic on film strip, brings problem to the production of film, processing, application.

Summary of the invention

The technical problem that the present invention mainly solves: produce or course of processing mistake for current polypropylene film, can be difficult to because the reasons such as friction make electrostatic on film strip be disappeared by conduction, to the production of film, processing, application brings the problem of very large harm, provide a kind of preparation method of wear-resisting antistatic polypropylene film, the present invention carries out modification to film, reduce resistivity, the generation of static charge accumulation is suppressed from source, the film produced can not only reach good antistatic property, the transparency of its goods, mechanical property, elongation at break, gas barrier property and printing do not have obvious change yet, and it is better to obtain gloss appearance degree, the film that also can not become fragile, very suitable being used for does packing film or farm-oriented mulch.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

(1) hydrotalcite of 5 ~ 7g is got in the there-necked flask of 1000mL, the dehydrated alcohol of 150 ~ 200mL is added in bottle, beaker is put into water-bath, controlling bath temperature is 65 ~ 75 DEG C, and with magnetic stirring apparatus stirring reaction 1 ~ 2h under the rotating speed of 500 ~ 600r/min, the sodium laurylsulfonate of 20 ~ 25g is added in the flask of 500mL, and in flask, add the deionized water of 180 ~ 250mL, put it on process furnace, be heated to 80 ~ 90 DEG C, and heat while stirring, till solid dissolves completely;

(2) join in reacted there-necked flask by getting 50 ~ 80mL after the liquid cooling in above-mentioned beaker to room temperature, and be 3.5 ~ 3.8 by the sulfuric acid regulation solution pH value of massfraction 35%, and bath temperature is warming up to 80 ~ 90 DEG C, remain on stirring reaction 60 ~ 80min at this temperature, room temperature is cooled to after stirring terminates, pour into afterwards in beaker, and with diaphragm seal, the refrigerator putting into-5 DEG C leaves standstill 5 ~ 6h, filtration is taken out after leaving standstill, the ethanolic soln of filter residue with massfraction 40% is washed 1 ~ 3 time, dry with the baking oven putting into 60 ~ 70 DEG C after deionized water wash 1 ~ 3 time again, dry rear taking-up completely joins in shredder, grind to form 400 ~ 500 object powder,

(3) in three mouthfuls of beakers of 1000mL, take 30 ~ 50g polypropylene masterbatch and the above-mentioned powder of 5 ~ 8g, and add the dimethylbenzene of 100 ~ 150mL wherein, three mouthfuls of beakers are put into oil bath and is heated to 140 ~ 150 DEG C, and load onto prolong and carry out stirring and refluxing 2 ~ 3h, until solid dissolves completely, room temperature is cooled to after backflow, and 15 ~ 20mL acetone is dripped in flask, solution starts muddy generation and precipitates, stop dripping until precipitation produces completely, then leave standstill, carry out filtration under diminished pressure, by filter residue washing with acetone 3 ~ 5 times, the baking oven putting into 50 ~ 60 DEG C is afterwards dried to completely,

(4) above-mentioned dried solid vulcanizing press is carried out hot pressing in blocks, arranging pelletizing temperature is 165 ~ 170 DEG C, the thickness of the sheet extruded is 30 ~ 40 μm, and the baking oven putting into 50 ~ 60 DEG C after being cleaned by the thin slice acetone soln obtained is dry.

Beneficial effect of the present invention:

(1) the present invention carries out modification to film, reduces resistivity, suppresses the generation of static charge accumulation from source; (2) film that the present invention produces can not only reach good antistatic property, the transparency of its goods, mechanical property, elongation at break, gas barrier property and printing do not have obvious change yet, and it is better to obtain gloss appearance degree, the film that also can not become fragile, very suitable being used for does packing film or farm-oriented mulch.

Embodiment

First the hydrotalcite of 5 ~ 7g is got in the there-necked flask of 1000mL, the dehydrated alcohol of 150 ~ 200mL is added in bottle, beaker is put into water-bath, controlling bath temperature is 65 ~ 75 DEG C, and with magnetic stirring apparatus stirring reaction 1 ~ 2h under the rotating speed of 500 ~ 600r/min, the sodium laurylsulfonate of 20 ~ 25g is added in the flask of 500mL, and in flask, add the deionized water of 180 ~ 250mL, put it on process furnace, be heated to 80 ~ 90 DEG C, and heat while stirring, till solid dissolves completely, join in reacted there-necked flask by getting 50 ~ 80mL after the liquid cooling in beaker to room temperature, and be 3.5 ~ 3.8 by the sulfuric acid regulation solution pH value of massfraction 35%, and bath temperature is warming up to 80 ~ 90 DEG C, remain on stirring reaction at this temperature, 60 ~ 80min, room temperature is cooled to after stirring terminates, pour into afterwards in beaker, and with diaphragm seal, the refrigerator putting into-5 DEG C leaves standstill 5 ~ 6h, filtration is taken out after leaving standstill, the ethanolic soln of filter residue with massfraction 40% is washed 1 ~ 3 time, dry with the baking oven putting into 60 ~ 70 DEG C after deionized water wash 1 ~ 3 time again, dry rear taking-up completely joins in shredder, grind to form 400 ~ 500 object powder, in three mouthfuls of beakers of 1000mL, take 30 ~ 50g polypropylene masterbatch and the above-mentioned powder of 5 ~ 8g, and add the dimethylbenzene of 100 ~ 150mL wherein, three mouthfuls of beakers are put into oil bath and is heated to 140 ~ 150 DEG C, and load onto prolong and carry out stirring and refluxing 2 ~ 3h, until solid dissolves completely, room temperature is cooled to after backflow, and 15 ~ 20mL acetone is dripped in flask, solution starts muddy generation and precipitates, stop dripping until precipitation produces completely, then leave standstill, carry out filtration under diminished pressure, by filter residue washing with acetone 3 ~ 5 times, the baking oven putting into 50 ~ 60 DEG C is afterwards dried to completely, dried solid vulcanizing press is carried out hot pressing in blocks, arranging pelletizing temperature is 165 ~ 170 DEG C, and the thickness of the sheet of extrusion is 30 ~ 40 μm, and the baking oven putting into 50 ~ 60 DEG C after being cleaned by the thin slice acetone soln obtained is dry.

Example 1

First the hydrotalcite of 5g is got in the there-necked flask of 1000mL, the dehydrated alcohol of 150mL is added in bottle, beaker is put into water-bath, and controlling bath temperature is 65 DEG C, and with magnetic stirring apparatus stirring reaction 1h under the rotating speed of 500r/min, the sodium laurylsulfonate of 20g is added in the flask of 500mL, and in flask, add the deionized water of 180mL, put it on process furnace, be heated to 80 DEG C, and heat while stirring, till solid dissolves completely, join in reacted there-necked flask by getting 50mL after the liquid cooling in beaker to room temperature, and be 3.5 by the sulfuric acid regulation solution pH value of massfraction 35%, and bath temperature is warming up to 80 DEG C, remain on stirring reaction at this temperature, 60min, room temperature is cooled to after stirring terminates, pour into afterwards in beaker, and with diaphragm seal, the refrigerator putting into-5 DEG C leaves standstill 5h, filtration is taken out after leaving standstill, the ethanolic soln of filter residue massfraction 40% is washed 1 time, dry with the baking oven putting into 60 DEG C after deionized water wash 1 time again, dry rear taking-up completely joins in shredder, grind to form 400 object powder, in three mouthfuls of beakers of 1000mL, take 30g polypropylene masterbatch and the above-mentioned powder of 5g, and add the dimethylbenzene of 100mL wherein, three mouthfuls of beakers are put into oil bath and is heated to 140 DEG C, and load onto prolong and carry out stirring and refluxing 2h, until solid dissolves completely, room temperature is cooled to after backflow, and 15mL acetone is dripped in flask, solution starts muddy generation and precipitates, and stops dripping until precipitation produces completely, then leave standstill, carry out filtration under diminished pressure, by filter residue washing with acetone 3 times, the baking oven putting into 50 DEG C is afterwards dried to completely, dried solid vulcanizing press is carried out hot pressing in blocks, arranging pelletizing temperature is 165 DEG C, and the thickness of the sheet of extrusion is 30 μm, and the baking oven putting into 50 DEG C after being cleaned by the thin slice acetone soln obtained is dry.

Example 2

First the hydrotalcite of 6g is got in the there-necked flask of 1000mL, the dehydrated alcohol of 1575mL is added in bottle, beaker is put into water-bath, and controlling bath temperature is 70 DEG C, and with magnetic stirring apparatus stirring reaction 1.5h under the rotating speed of 550r/min, the sodium laurylsulfonate of 23g is added in the flask of 500mL, and in flask, add the deionized water of 220mL, put it on process furnace, be heated to 85 DEG C, and heat while stirring, till solid dissolves completely, join in reacted there-necked flask by getting 65mL after the liquid cooling in beaker to room temperature, and be 3.7 by the sulfuric acid regulation solution pH value of massfraction 35%, and bath temperature is warming up to 85 DEG C, remain on stirring reaction 70min at this temperature, room temperature is cooled to after stirring terminates, pour into afterwards in beaker, and with diaphragm seal, the refrigerator putting into-5 DEG C leaves standstill 5.5h, filtration is taken out after leaving standstill, the ethanolic soln of filter residue massfraction 40% is washed 2 times, dry with the baking oven putting into 65 DEG C after deionized water wash 2 times again, dry rear taking-up completely joins in shredder, grind to form 450 object powder, in three mouthfuls of beakers of 1000mL, take 40g polypropylene masterbatch and the above-mentioned powder of 6g, and add the dimethylbenzene of 125mL wherein, three mouthfuls of beakers are put into oil bath and is heated to 145 DEG C, and load onto prolong and carry out stirring and refluxing 2.5h, until solid dissolves completely, room temperature is cooled to after backflow, and 17mL acetone is dripped in flask, solution starts muddy generation and precipitates, and stops dripping until precipitation produces completely, then leave standstill, carry out filtration under diminished pressure, by filter residue washing with acetone 4 times, the baking oven putting into 55 DEG C is afterwards dried to completely, dried solid vulcanizing press is carried out hot pressing in blocks, arranging pelletizing temperature is 167 DEG C, and the thickness of the sheet of extrusion is 35 μm, and the baking oven putting into 55 DEG C after being cleaned by the thin slice acetone soln obtained is dry.

Example 3

First the hydrotalcite of 7g is got in the there-necked flask of 1000mL, the dehydrated alcohol of 200mL is added in bottle, beaker is put into water-bath, and controlling bath temperature is 75 DEG C, and with magnetic stirring apparatus stirring reaction 2h under the rotating speed of 600r/min, the sodium laurylsulfonate of 25g is added in the flask of 500mL, and in flask, add the deionized water of 250mL, put it on process furnace, be heated to 90 DEG C, and heat while stirring, till solid dissolves completely, join in reacted there-necked flask by getting 80mL after the liquid cooling in beaker to room temperature, and be 3.8 by the sulfuric acid regulation solution pH value of massfraction 35%, and bath temperature is warming up to 90 DEG C, remain on stirring reaction 80min at this temperature, room temperature is cooled to after stirring terminates, pour into afterwards in beaker, and with diaphragm seal, the refrigerator putting into-5 DEG C leaves standstill 6h, filtration is taken out after leaving standstill, the ethanolic soln of filter residue massfraction 40% is washed 3 times, dry with the baking oven putting into 70 DEG C after deionized water wash 3 times again, dry rear taking-up completely joins in shredder, grind to form 500 object powder, in three mouthfuls of beakers of 1000mL, take 50g polypropylene masterbatch and the above-mentioned powder of 8g, and add the dimethylbenzene of 150mL wherein, three mouthfuls of beakers are put into oil bath and is heated to 150 DEG C, and load onto prolong and carry out stirring and refluxing 3h, until solid dissolves completely, room temperature is cooled to after backflow, and 20mL acetone is dripped in flask, solution starts muddy generation and precipitates, and stops dripping until precipitation produces completely, then leave standstill, carry out filtration under diminished pressure, by filter residue washing with acetone 5 times, the baking oven putting into 60 DEG C is afterwards dried to completely, dried solid vulcanizing press is carried out hot pressing in blocks, arranging pelletizing temperature is 170 DEG C, and the thickness of the sheet of extrusion is 40 μm, and the baking oven putting into 60 DEG C after being cleaned by the thin slice acetone soln obtained is dry.

Claims (1)

1. a preparation method for wear-resisting antistatic polypropylene film, is characterized in that concrete preparation process is:

(1) hydrotalcite of 5 ~ 7g is got in the there-necked flask of 1000mL, the dehydrated alcohol of 150 ~ 200mL is added in bottle, beaker is put into water-bath, controlling bath temperature is 65 ~ 75 DEG C, and with magnetic stirring apparatus stirring reaction 1 ~ 2h under the rotating speed of 500 ~ 600r/min, the sodium laurylsulfonate of 20 ~ 25g is added in the flask of 500mL, and in flask, add the deionized water of 180 ~ 250mL, put it on process furnace, be heated to 80 ~ 90 DEG C, and heat while stirring, till solid dissolves completely;

(2) join in reacted there-necked flask by getting 50 ~ 80mL after the liquid cooling in above-mentioned beaker to room temperature, and be 3.5 ~ 3.8 by the sulfuric acid regulation solution pH value of massfraction 35%, and bath temperature is warming up to 80 ~ 90 DEG C, remain on stirring reaction 60 ~ 80min at this temperature, room temperature is cooled to after stirring terminates, pour into afterwards in beaker, and with diaphragm seal, the refrigerator putting into-5 DEG C leaves standstill 5 ~ 6h, filtration is taken out after leaving standstill, the ethanolic soln of filter residue with massfraction 40% is washed 1 ~ 3 time, dry with the baking oven putting into 60 ~ 70 DEG C after deionized water wash 1 ~ 3 time again, dry rear taking-up completely joins in shredder, grind to form 400 ~ 500 object powder,

(3) in three mouthfuls of beakers of 1000mL, take 30 ~ 50g polypropylene masterbatch and the above-mentioned powder of 5 ~ 8g, and add the dimethylbenzene of 100 ~ 150mL wherein, three mouthfuls of beakers are put into oil bath and is heated to 140 ~ 150 DEG C, and load onto prolong and carry out stirring and refluxing 2 ~ 3h, until solid dissolves completely, room temperature is cooled to after backflow, and 15 ~ 20mL acetone is dripped in flask, solution starts muddy generation and precipitates, stop dripping until precipitation produces completely, then leave standstill, carry out filtration under diminished pressure, by filter residue washing with acetone 3 ~ 5 times, the baking oven putting into 50 ~ 60 DEG C is afterwards dried to completely,

(4) above-mentioned dried solid vulcanizing press is carried out hot pressing in blocks, arranging pelletizing temperature is 165 ~ 170 DEG C, the thickness of the sheet extruded is 30 ~ 40 μm, and the baking oven putting into 50 ~ 60 DEG C after being cleaned by the thin slice acetone soln obtained is dry.