CN105440529A - Low-price black sand improved plastic plate and preparation method thereof - Google Patents

Abstract

The invention discloses a low-price black sand improved plastic plate. The low-price black sand improved plastic plate comprises raw materials in parts by weight as follows: 0.8-1 part of zinc hydroxystannate, 50-60 parts of indianite nanotubes, 30-40 parts of urea, 1-2 parts of zinc oxide, 6-7 parts of potassium hydroxide, 200-300 parts of polyvinyl alcohol, 10-16 parts of acrylonitrile, 0.5-0.6 parts of divinylbenzene, 0.1-0.12 parts of azodiisobutyronitrile, 160-180 parts of polyvinyl chloride, 5-7 parts of black sand, 1-2 parts of polyvinyl butyral, 7-10 parts of phthalate, 1-2 parts of methyltin mercaptide, 2-3 parts of inositol hexaphosphate and 0.5-1 part of tea saponin. The added black sand can effectively reduce the production cost, resources are effectively recycled, and polyvinyl chloride modified through blending of the black sand, methyltin mercaptide and the like has better stability and strength.

Description

A kind of black sand at a low price improves plastic plate and preparation method thereof

Technical field

The present invention relates to board technology field, particularly relate to a kind of black sand at a low price and improve plastic plate and preparation method thereof.

Background technology

Halloysite nanotubes is the silico-aluminate that a class has multi-walled pipes shape structure, nontoxic, respectively containing aluminium hydroxyl and silicone hydroxyl inside and outside its tube wall, and with the secondary valence bond such as hydrogen bond and Van der Waals force syndeton unit, can be dispersed in polymeric matrix preferably, simultaneously also because the active group in hollow tube wall can catch the free radical of polymer combustion process generation, the burning of polymkeric substance can be delayed, therefore obtain extensive concern and research.Utilize zinc hydroxyl stannate to carry out surface coating modification to halloysite nanometer, and used as the fire retardant for polyvinyl chloride, the flame retarding and smoke suppressing properties of polyvinyl chloride can be improved.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides a kind of black sand at a low price to improve plastic plate and preparation method thereof.

The present invention is achieved by the following technical solutions:

A kind of black sand at a low price improves plastic plate, and it is made up of the raw material of following weight parts:

Zinc hydroxyl stannate 0.8-1, halloysite nanotubes 50-60, urea 30-40, zinc oxide 1-2, potassium hydroxide 6-7, polyvinyl alcohol 200-300, vinyl cyanide 10-16, divinylbenzene 0.5-0.6, Diisopropyl azodicarboxylate 0.1-0.12, polyvinyl chloride 160-180, black husky 5-7, polyvinyl butyral acetal 1-2, phthalic ester 7-10, thiol methyl tin 1-2, myo-Inositol hexaphosphate 2-3, tea saponin 0.5-1.

The black sand of described low price improves a preparation method for plastic plate, comprises the following steps:

(1) by above-mentioned halloysite nanotubes, urea mixing, join in 20-30 times of deionized water, insulated and stirred 60-70 minute at 50-60 DEG C, then ultrasonic disperse 40-50 minute, obtain dispersion liquid;

(2) polyvinyl butyral acetal is joined in phthalic ester, stirring and dissolving, add black sand, insulated and stirred 20-30 minute at 80-90 DEG C, obtain the black sand material of premix;

(3) above-mentioned myo-Inositol hexaphosphate is joined in 30-45 times of deionized water, stirring and dissolving, add the 10-15% of tea saponin, above-mentioned polyvinyl chloride weight, 100-200 rev/min is stirred 20-30 minute, add the 4-6% of the black sand material of premix, thiol methyl tin, above-mentioned polyvinyl alcohol weight, send in the oil bath of 130-135 DEG C, insulated and stirred 40-50 minute, discharging cools, get Hei Sha modified polyvinyl chloride;

(4) by above-mentioned zinc hydroxyl stannate, zinc oxide, potassium hydroxide mixing, join in 10-15 times of water, be heated to 50-60 DEG C, add above-mentioned dispersion liquid, raised temperature is 85-90 DEG C, insulation reaction 5-6 hour, suction filtration, joins in 1.6-2 propyl carbinol doubly by filter cake, ultrasonic disperse 7-10 minute, component distillation, by the solid substance vacuum-drying obtained, obtains the coated halloysite of zinc hydroxyl stannate;

(5) coated for zinc hydroxyl stannate halloysite is joined in remaining polyvinyl alcohol, raised temperature is 60-70 DEG C under nitrogen protection, add aforesaid propylene nitrile, divinylbenzene, Diisopropyl azodicarboxylate successively, insulated and stirred reaction 7-8 hour, be cooled to normal temperature, add above-mentioned black husky modified polyvinyl chloride, ultrasonic disperse 10-20 minute, suction filtration, vacuum-drying;

(6) mix with residue each raw material by above-mentioned vacuum drying material, at 120-125 DEG C, stir 3-4 minute, feeding twin screw extruder, extrudes, mould molding, to cut off, overlay film, obtain described plastic plate.

Advantage of the present invention is:

The coated halloysite nanotubes that the present invention adopts, the zinc hydroxyl stannate on its surface is in blend combustion processes, and the Hcl gas discharged when itself Zn2+ and SnO32-can catch burning, suppresses Hcl to the further catalyzed degradation effect of polyvinyl chloride;

Zinc hydroxyl stannate can play fire retardation in gas phase and condensed state to the burning of polymkeric substance respectively along with the raising of temperature of combustion, react the zinc chloride generated and can catch active strong free radical in gas phase, firm and the charring layer of densification is formed in solid phase, Zncl2 with Sncl4 is by promoting to be cross-linked, to become charcoal to reduce generation and the release of flammable volatile matter, CO in all right catalyzed oxidation flame of tin compound simultaneously after gasification and soot, thus the oxygen concentration in minimizing combustion processes, play fire retardation;

Halloysite nanotubes has multi-walled pipes shape structure, can take blocking effect, and simultaneously also owing to containing micro-oxidation iron in its composition, can catch the living radical produced in degradation process, effectively can suppress the carrying out of DeR, improve thermostability;

Nanoparticle can be made to be uniformly dispersed in polymeric matrix, and interface interaction power is large, is conducive to the improvement of the mechanical property of blend, improves resistance to impact shock.

The black sand that the present invention adds, can effectively reduce production cost, effectively recycle resource, and have better stability and intensity by the polyvinyl chloride of the blending and modifying such as Hei Sha and thiol methyl tin.

Embodiment

A kind of black sand at a low price improves plastic plate, and it is made up of the raw material of following weight parts:

Zinc hydroxyl stannate 0.8, halloysite nanotubes 50, urea 30, zinc oxide 1, potassium hydroxide 6, polyvinyl alcohol 200, vinyl cyanide 10, divinylbenzene 0.5, Diisopropyl azodicarboxylate 0.1, polyvinyl chloride 160, black husky 5, polyvinyl butyral acetal 1, phthalic ester 7, thiol methyl tin 1, myo-Inositol hexaphosphate 2, tea saponin 0.5.

The black sand of described low price improves a preparation method for plastic plate, comprises the following steps:

(1) by above-mentioned halloysite nanotubes, urea mixing, join in 20 times of deionized waters, insulated and stirred 60 minutes at 50 DEG C, then ultrasonic disperse 40 minutes, obtain dispersion liquid;

(2) join in phthalic ester by polyvinyl butyral acetal, stirring and dissolving, add black sand, insulated and stirred 20 minutes at 80 DEG C, obtains the black sand material of premix;

(3) above-mentioned myo-Inositol hexaphosphate is joined in 30 times of deionized waters, stirring and dissolving, add tea saponin, above-mentioned polyvinyl chloride weight 10%, 100 revs/min are stirred 20 minutes, add the black sand material of premix, thiol methyl tin, above-mentioned polyvinyl alcohol weight 4%, send in the oil bath of 130 DEG C, insulated and stirred 40 minutes, discharging cools, get Hei Sha modified polyvinyl chloride;

(4) by above-mentioned zinc hydroxyl stannate, zinc oxide, potassium hydroxide mixing, join in 10 times of water, be heated to 50 DEG C, add above-mentioned dispersion liquid, raised temperature is 85 DEG C, insulation reaction 5 hours, suction filtration, joins in the propyl carbinol of 1.6 times by filter cake, ultrasonic disperse 7 minutes, component distillation, by the solid substance vacuum-drying obtained, obtains the coated halloysite of zinc hydroxyl stannate;

(5) coated for zinc hydroxyl stannate halloysite is joined in remaining polyvinyl alcohol, raised temperature is 60 DEG C under nitrogen protection, add aforesaid propylene nitrile, divinylbenzene, Diisopropyl azodicarboxylate successively, insulated and stirred reacts 7 hours, be cooled to normal temperature, add above-mentioned black husky modified polyvinyl chloride, ultrasonic disperse 10 minutes, suction filtration, vacuum-drying;

(6) mix with residue each raw material by above-mentioned vacuum drying material, stir 3 minutes at 120 DEG C, feeding twin screw extruder, extrudes, mould molding, to cut off, overlay film, obtain described heat insulating plastic plate.

Performance test:

Tensile strength (MPa) 44;

Flexural strength (MPa) 72.9;

Flame retardant resistance: namely put out from fire, does not have black smoke.

Claims (2)

1. the black sand of low price improves a plastic plate, and it is characterized in that, it is made up of the raw material of following weight parts:

Zinc hydroxyl stannate 0.8-1, halloysite nanotubes 50-60, urea 30-40, zinc oxide 1-2, potassium hydroxide 6-7, polyvinyl alcohol 200-300, vinyl cyanide 10-16, divinylbenzene 0.5-0.6, Diisopropyl azodicarboxylate 0.1-0.12, polyvinyl chloride 160-180, black husky 5-7, polyvinyl butyral acetal 1-2, phthalic ester 7-10, thiol methyl tin 1-2, myo-Inositol hexaphosphate 2-3, tea saponin 0.5-1.

2. black sand at a low price as claimed in claim 1 improves a preparation method for plastic plate, it is characterized in that comprising the following steps:

(1) by above-mentioned halloysite nanotubes, urea mixing, join in 20-30 times of deionized water, insulated and stirred 60-70 minute at 50-60 DEG C, then ultrasonic disperse 40-50 minute, obtain dispersion liquid;

(2) polyvinyl butyral acetal is joined in phthalic ester, stirring and dissolving, add black sand, insulated and stirred 20-30 minute at 80-90 DEG C, obtain the black sand material of premix;

(3) above-mentioned myo-Inositol hexaphosphate is joined in 30-45 times of deionized water, stirring and dissolving, add the 10-15% of tea saponin, above-mentioned polyvinyl chloride weight, 100-200 rev/min is stirred 20-30 minute, add the 4-6% of the black sand material of premix, thiol methyl tin, above-mentioned polyvinyl alcohol weight, send in the oil bath of 130-135 DEG C, insulated and stirred 40-50 minute, discharging cools, get Hei Sha modified polyvinyl chloride;

(4) by above-mentioned zinc hydroxyl stannate, zinc oxide, potassium hydroxide mixing, join in 10-15 times of water, be heated to 50-60 DEG C, add above-mentioned dispersion liquid, raised temperature is 85-90 DEG C, insulation reaction 5-6 hour, suction filtration, joins in 1.6-2 propyl carbinol doubly by filter cake, ultrasonic disperse 7-10 minute, component distillation, by the solid substance vacuum-drying obtained, obtains the coated halloysite of zinc hydroxyl stannate;

(5) coated for zinc hydroxyl stannate halloysite is joined in remaining polyvinyl alcohol, raised temperature is 60-70 DEG C under nitrogen protection, add aforesaid propylene nitrile, divinylbenzene, Diisopropyl azodicarboxylate successively, insulated and stirred reaction 7-8 hour, be cooled to normal temperature, add above-mentioned black husky modified polyvinyl chloride, ultrasonic disperse 10-20 minute, suction filtration, vacuum-drying;

(6) mix with residue each raw material by above-mentioned vacuum drying material, at 120-125 DEG C, stir 3-4 minute, feeding twin screw extruder, extrudes, mould molding, to cut off, overlay film, obtain described plastic plate.