CN112677601A - PVC fruit partition board added with coal gangue powder and preparation method thereof - Google Patents
PVC fruit partition board added with coal gangue powder and preparation method thereof Download PDFInfo
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- CN112677601A CN112677601A CN202011629968.2A CN202011629968A CN112677601A CN 112677601 A CN112677601 A CN 112677601A CN 202011629968 A CN202011629968 A CN 202011629968A CN 112677601 A CN112677601 A CN 112677601A
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Abstract
The invention relates to the technical field of fruit packaging, and discloses a PVC fruit partition board added with coal gangue powder, which comprises a plurality of transverse plate bodies and a plurality of longitudinal plate bodies, wherein the transverse plate bodies are transversely arranged in parallel, the longitudinal plate bodies are longitudinally arranged in parallel, the transverse plate bodies and the longitudinal plate bodies are arranged in a crossed manner to form a plurality of containing cavities for placing fruits, and the transverse plate bodies and the longitudinal plate bodies respectively comprise a UV coating, a wear-resistant layer, a printing layer, a filling layer and a stabilizing layer which are sequentially arranged from top to bottom; the filling layer comprises the following components in parts by weight: 20-26 parts of PVC resin, 60-70 parts of stone powder, 5-8 parts of plasticizer, 1-5 parts of flame retardant and 1-2 parts of heat stabilizer; the stone powder comprises at least one of coal gangue powder, marble powder and granite powder; the stabilizing layer comprises the following components in parts by weight: 25-30 parts of PVC resin, 30-40 parts of coal gangue powder, 25-45 parts of plasticizer, 3-6 parts of lubricant, 1-5 parts of flame retardant and 1-2 parts of heat stabilizer. The fruit separator improves the pressure stability of the fruit separator, so that the fruit separator is not easy to break.
Description
Technical Field
The invention belongs to the technical field of fruit packaging, and particularly relates to a PVC fruit partition board added with coal gangue powder and a preparation method thereof.
Background
With the continuous improvement of living standard of people, fruits become a necessity of schedule life, the demand of the fruits is larger and larger, and the quality requirement is stricter, so that the long-distance transportation and storage of the fruits become an important means for scheduling the fruits. Meanwhile, in order to avoid damage to fruits in the transportation process, usually, a partition plate is arranged in the fruit box so as to avoid mutual extrusion friction and collision among the fruits.
However, the conventional fruit partition has low strength and is easily bent and deformed during use, particularly for a long time, so that it cannot effectively separate fruits, resulting in damage of the fruits.
On the other hand, coal gangue (coal) is a solid waste discharged in coal mining and coal washing processes, and is a black gray rock which has a lower carbon content associated with a coal bed and is harder than coal in a coal-forming process. The coal gangue accumulated in China reaches more than 10 hundred million tons, and 1 hundred million tons of coal gangue are discharged every year. The mass disposal and stacking of the coal gangue not only occupies the land and affects the ecological environment, but also the gangue eluviation water pollutes the surrounding soil and underground water. In addition, the coal gangue contains certain combustible substances, spontaneous combustion can occur under proper conditions, fire is caused, and harmful gases such as sulfur dioxide, nitrogen oxides, carbon oxides, smoke dust and the like can be discharged to pollute the atmospheric environment.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a PVC fruit partition board added with coal gangue powder and a preparation method thereof. According to the PVC fruit clapboard, the coal gangue is utilized as a filler of the PVC floor, so that the production cost of the PVC fruit clapboard is reduced, and the compression stability of the PVC fruit clapboard is improved.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a fruit partition board added with coal gangue powder comprises a plurality of transverse plate bodies and a plurality of longitudinal plate bodies, wherein the transverse plate bodies are transversely arranged in parallel, the longitudinal plate bodies are longitudinally arranged in parallel, the transverse plate bodies and the longitudinal plate bodies are arranged in a crossed mode to form a plurality of containing cavities for placing fruits, and the transverse plate bodies and the longitudinal plate bodies respectively comprise UV coatings, wear-resistant layers, printing layers, filling layers and stabilizing layers which are sequentially arranged from top to bottom;
the filling layer comprises the following components in parts by weight: 20-26 parts of PVC resin, 60-70 parts of stone powder, 5-8 parts of plasticizer, 1-5 parts of flame retardant and 1-2 parts of heat stabilizer; the stone powder comprises at least one of coal gangue powder, marble powder and granite powder;
the stabilizing layer comprises the following components in parts by weight: 25-30 parts of PVC resin, 30-40 parts of coal gangue powder, 25-45 parts of plasticizer, 3-6 parts of lubricant, 1-5 parts of flame retardant and 1-2 parts of heat stabilizer.
Preferably, the thickness of the filling layer is 65% -85% of the total thickness of the PVC fruit separator.
Preferably, the stone powder in the filling layer comprises gangue powder, marble powder and granite powder, and the mass ratio of the gangue powder to the marble powder to the granite powder is 3-6: 1-3: 1.5-2.5.
Preferably, in the filling layer, the mass ratio of the coal gangue powder to the marble powder to the granite powder is 4.5:2: 2.
Preferably, the filling layer comprises the following components in parts by weight: 24 parts of PVC resin, 65 parts of stone powder, 6.5 parts of plasticizer, 3 parts of flame retardant and 1.5 parts of heat stabilizer.
Preferably, the stabilizing layer comprises the following components in parts by weight: 28 parts of PVC resin, 35 parts of coal gangue powder, 35 parts of plasticizer, 4.5 parts of lubricant, 3 parts of flame retardant and 1.5 parts of heat stabilizer.
Preferably, the plasticizer comprises DOTP and DINCH, and the mass ratio of DOTP to DINCH is 6-10: 2-4.
Preferably, the mass ratio of DOTP to DINCH in the plasticizer is 8: 3.
Preferably, horizontal plate body has a plurality of first joint grooves along its length direction equipartition, vertical plate body has a plurality of second joint grooves along its length direction equipartition, first joint groove with the mutual joint in second joint groove.
A preparation method of a PVC fruit separator is characterized by comprising the following steps:
(1) preparing a filling layer:
putting PVC resin, plasticizer, flame retardant and heat stabilizer into a stirrer according to a formula ratio, uniformly stirring, adding stone powder, uniformly stirring, then banburying the mixed material at 165-185 ℃ for 2.5-8 min, roll-forming the banburied material at the first rolling temperature of 170-180 ℃ and the second rolling temperature of 160-170 ℃, cooling and cutting into a target specification;
(2) preparing a stabilizing layer:
putting PVC resin, a plasticizer, a flame retardant, a lubricant and a heat stabilizer into a stirrer according to a formula ratio, uniformly stirring, adding gangue powder, uniformly stirring, banburying the mixed material at 165-185 ℃ for 2.5-8 min, roll-forming the banburied material at 160-170 ℃ for the first time and 150-160 ℃ for the second time, cooling and cutting into a target specification;
(3) hot-pressing and laminating:
the wear-resistant layer, the printing layer, the filling layer and the stabilizing layer are stacked in sequence and then are laminated in a hot pressing mode, and the hot pressing laminating process comprises the following steps: the time is 30-40 min, the temperature is 120-160 ℃, and the hot pressing weight is 500 t;
(4) UV tempering:
uniformly coating a layer of UV coating on the surface of the floor after hot pressing and attaching, after curing, tempering the transverse plate and the longitudinal plate body, and finally air-drying to obtain the PVC transverse plate and the PVC longitudinal plate body.
(5) Splicing the fruit partition plates:
and the transverse plate body and the longitudinal plate body are respectively provided with a first clamping groove and a second clamping groove, and then the PVC fruit partition plates are spliced. Compared with the prior art, the invention has the beneficial effects that:
in the PVC floor, the filling layer takes gangue powder, marble powder and granite as fillers, so that the filling layer has high mechanical strength, high indentation resistance and good compression stability, and the compression stability of the whole PVC floor is obviously improved. Meanwhile, the stabilizing layer is also filled with a proper amount of coal gangue powder, so that the compression stability of the stabilizing layer is enhanced to a certain extent while the higher toughness of the stabilizing layer is ensured, and the overall stability of the floor can be better balanced. The floor based on the structure layer has the advantages of good compression stability, difficult fracture, difficult upwarp, good usability and long service life.
In addition, the coal gangue has low calorific value, the carbon content is 20-30%, and the coal gangue also contains humic acid. Therefore, after the coal gangue is added, the carbon component of the coal gangue can enable the floor to have an antistatic effect. The humic acid is used as organic matter material and has high stability and no harm.
The invention has wide source of main raw materials and low price, utilizes the waste of the coal gangue, is environment-friendly and energy-saving, reduces the production cost of the PVC floor and effectively improves the compression stability of the floor.
Drawings
Embodiments of the invention are described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic structural diagram of a PVC fruit separator added with coal gangue powder.
FIG. 2 is a schematic structural view of the transverse partition of the present invention.
Fig. 3 is a schematic structural view of the longitudinal separator of the present invention.
FIG. 4 is a schematic structural view of the PVC floor according to the present invention.
In the figure: the novel anti-abrasion wear-resistant coating comprises, by weight, 1-UV coating, 2-wear-resistant layer, 3-printing layer, 4-filling layer, 5-stabilizing layer, 10-transverse plate, 11-first clamping groove, 20-longitudinal plate, 21-second clamping groove and 30-containing cavity.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In the examples, the particle sizes of the gangue powder, the marble powder and the granite powder are all 200 meshes.
Example 1
The embodiment provides a PVC fruit baffle, as shown in fig. 1-4, this PVC fruit baffle includes a plurality of horizontal plate bodies 10 that transversely set up side by side and a plurality of vertical plate body 20 that vertically set up side by side, and is a plurality of horizontal plate body 10 and a plurality of vertical plate body 20 alternately sets up to form a plurality of chambeies 30 that hold that are used for placing fruit, horizontal plate body 10 reaches vertical plate body 20 all includes UV coating 1, wearing layer 2, printing layer 3, filling layer 4 and the stable layer 5 that from the top down set gradually. Wherein, the thickness of the filling layer is 75% of the total thickness of the PVC fruit separator.
In this embodiment, the wear-resistant layer 2 is a transparent PVC film, and the printing layer 3 has a pattern printed with pigment.
In this example, the 4-layer filler is composed of the following components in parts by weight: 24 parts of PVC resin, 65 parts of stone powder, 6.5 parts of plasticizer, 3 parts of aluminum hydroxide and 1.5 parts of calcium-zinc stabilizer; the stone powder consists of coal gangue powder, marble powder and granite powder, and the mass ratio of the coal gangue powder, the marble powder and the granite powder is 4.5:2: 2; the plasticizer consists of DOTP and DINCH, and the mass ratio of DOTP: DINCH ═ 8: 3.
In this example, the stabilizing layer was composed of the following components in parts by weight: 28 parts of PVC resin, 35 parts of coal gangue powder, 35 parts of plasticizer, 4.5 parts of oxidized polyethylene wax, 3 parts of aluminum hydroxide and 1.5 parts of calcium-zinc stabilizer; the plasticizer consists of DOTP and DINCH, and the mass ratio of DOTP: DINCH ═ 8: 3.
In this embodiment, horizontal plate body 10 has a plurality of first joint grooves 11 along its length direction equipartition, vertical plate body 20 has a plurality of second joint grooves 21 along its length direction equipartition, first joint groove 11 with the mutual joint in second joint groove 21. The fruit baffle by horizontal plate body 10 reaches vertical plate body 20 concatenation forms, through setting up first joint groove 11 with second joint groove 21, during the concatenation directly will first joint groove 11 with the mutual joint in second joint groove 21 can, the concatenation is simple and convenient. Because the first clamping grooves 11 and the second clamping grooves 21 are spliced with each other, the opening directions of the first clamping grooves 11 and the second clamping grooves 21 need to be different, specifically, the first clamping grooves 11 extend from the middle parts of the transverse plate bodies 10 to the upper end surfaces thereof, and the second clamping grooves 21 extend from the middle parts of the longitudinal plate bodies 20 to the lower end surfaces thereof. Of course, the first engaging groove 11 may extend from the middle of the transverse plate 10 to the lower end surface thereof, and the second engaging groove 21 may extend from the middle of the longitudinal plate 20 to the upper end surface thereof.
In this embodiment, in order to guarantee the mutual splicing strength between the first joint groove 11 and the second joint groove 21, the horizontal plate body 10 with the height of the vertical plate body 20 is the same, the first joint groove 11 with the length of the second joint groove 21 is the same, and the length thereof is the half of the height of the horizontal plate body 10 or the vertical plate body 20. The thickness of the transverse plate body 10 is the same as that of the longitudinal plate body 20, the width of the first clamping groove 11 is the same as that of the second clamping groove 21, and the width of the first clamping groove is the same as that of the transverse plate body 10 or that of the longitudinal plate body 20.
The preparation method of the PVC fruit clapboard comprises the following steps:
(1) preparing a filling layer:
putting PVC resin, plasticizer, flame retardant and heat stabilizer into a stirrer according to a formula ratio, uniformly stirring, adding stone powder, uniformly stirring, then inputting the mixed material into an internal mixer for heating and internal mixing, wherein the internal mixing process is 165-185 ℃ for 2.5-8 min (170 ℃ for 4min in the embodiment), carrying out roll forming on the internally mixed material, the first roll temperature is 170-180 ℃, the second roll temperature is 160-170 ℃, cooling and cutting into target specifications;
(2) preparing a stabilizing layer:
putting PVC resin, plasticizer, flame retardant, lubricant and heat stabilizer into a stirrer according to a formula ratio, uniformly stirring, adding gangue powder, uniformly stirring, inputting the mixed material into an internal mixer for heating and internal mixing, wherein the internal mixing process is 165-185 ℃ for 2.5-8 min (170 ℃ for 4min in the embodiment), rolling and molding the internally mixed material, the first rolling temperature is 160-170 ℃, the second rolling temperature is 150-160 ℃, cooling and cutting into a target specification;
(3) hot-pressing and laminating:
the wear-resistant layer, the printing layer, the filling layer and the stabilizing layer are stacked in sequence and then are laminated in a hot pressing mode, and the hot pressing laminating process comprises the following steps: the time is 30-40 min, the temperature is 120-160 ℃, and the hot pressing weight is 500t (in the embodiment, the hot pressing is carried out for 40min at 140 ℃);
(4) UV tempering:
uniformly coating a layer of UV coating on the surface of the floor after hot pressing and attaching, irradiating by ultraviolet rays, then baking in an oven, curing, tempering the transverse plate body 10 and the longitudinal plate body 20, wherein the temperature of hot water for tempering is 80-120 ℃ (100 ℃ in the embodiment), the temperature of cold water for tempering is 10 ℃, and finally drying by cold air to obtain the PVC transverse plate and the PVC longitudinal plate body.
(5) Splicing the fruit partition plates:
the horizontal plate body 10 and the longitudinal plate body 20 are respectively provided with a first clamping groove 11 and a second clamping groove 21, and then are spliced into a PVC fruit partition plate.
Example 2
This example provides a PVC fruit separator which differs from example 1 only in that:
(1) the filling layer comprises the following components in parts by weight: 26 parts of PVC resin, 70 parts of stone powder, 8 parts of plasticizer, 5 parts of aluminum hydroxide and 2 parts of calcium-zinc stabilizer; the stone powder consists of coal gangue powder, marble powder and granite powder, and the mass ratio of the coal gangue powder, the marble powder and the granite powder is 6:3: 2.5; the plasticizer consists of DOTP and DINCH, and the mass ratio of DOTP: DINCH ═ 10: 4.
(2) The stabilizing layer consists of the following components in parts by weight: 25 parts of PVC resin, 30 parts of coal gangue powder, 25 parts of plasticizer, 3 parts of oxidized polyethylene wax, 1 part of aluminum hydroxide and 1 part of calcium-zinc stabilizer; the plasticizer consists of DOTP and DINCH, and the mass ratio of DOTP: DINCH ═ 10: 4.
Example 3
This example provides a PVC fruit separator which differs from example 1 only in that:
(1) the filling layer comprises the following components in parts by weight: 20 parts of PVC resin, 60 parts of stone powder, 5 parts of plasticizer, 1 part of aluminum hydroxide and 1 part of calcium-zinc stabilizer; the stone powder consists of coal gangue powder, marble powder and granite powder, and the mass ratio of the coal gangue powder, the marble powder and the granite powder is 3:1: 1.5; the plasticizer consists of DOTP and DINCH, and the mass ratio of DOTP: DINCH ═ 6: 2.
(2) The stabilizing layer consists of the following components in parts by weight: 30 parts of PVC resin, 40 parts of coal gangue powder, 45 parts of plasticizer, 6 parts of oxidized polyethylene wax, 5 parts of aluminum hydroxide and 2 parts of calcium-zinc stabilizer; the plasticizer consists of DOTP and DINCH, and the mass ratio of DOTP: DINCH ═ 6: 2.
Comparative example 1
Comparative example 1 provides a PVC fruit separator which differs from example 1 only in that: the filling layer comprises the following components in parts by weight: 24 parts of PVC resin, 65 parts of coal gangue powder, 6.5 parts of plasticizer, 3 parts of aluminum hydroxide and 1.5 parts of calcium-zinc stabilizer.
Comparative example 2
Comparative example 2 provides a PVC fruit separator which differs from example 1 only in that:
(1) the filling layer comprises the following components in parts by weight: 24 parts of PVC resin, 65 parts of calcium carbonate, 6.5 parts of plasticizer, 3 parts of aluminum hydroxide and 1.5 parts of calcium-zinc stabilizer.
(2) The stabilizing layer comprises the following components in parts by weight: 28 parts of PVC resin, 35 parts of calcium carbonate, 35 parts of plasticizer, 4.5 parts of oxidized polyethylene wax, 3 parts of aluminum hydroxide and 1.5 parts of calcium-zinc stabilizer.
Comparative example 3
Comparative example 3 provides a PVC fruit separator which differs from example 1 only in that: the plasticizer used in the filler layer and the stabilizer layer was DOTP.
Comparative example 4
Comparative example 4 provides a PVC fruit separator which differs from example 1 only in that: the plasticizer used in the filler layer and the stabilizer layer is DINCH.
And (3) performance testing:
the performance test of the PVC floor boards of the examples 1-3 and the comparative examples 1-4 is carried out, and the test method is as follows:
and (3) testing the indentation resistance: the test specimen is placed on a flat surface according to EN ISO 24343-1:2012, and an annular loading weight is placed on the test specimen. A total of 500N of force was slowly applied over the sample surface in 2S. The applied force was removed after 150 minutes and after an additional 150 minutes the final thickness of the sample was measured to the nearest 0.01mm using a suitable instrument.
And (3) shrinkage testing: the warpage height and size of the sample was tested according to EN ISO 23999:2012, and then recorded and the shrinkage calculated after placing the sample in an oven at a temperature of (80 + -2) ° C (360 + -15 minutes) and then at a temperature of (23 + -2) ° C and a relative humidity of (50 + -5)% for at least 24 hours.
The test results were as follows:
finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The PVC fruit partition board added with the coal gangue powder is characterized by comprising a plurality of transverse board bodies transversely arranged in parallel and a plurality of longitudinal board bodies longitudinally arranged in parallel, wherein the plurality of transverse board bodies and the plurality of longitudinal board bodies are arranged in a crossed manner and form a plurality of containing cavities for placing fruits, and the transverse board bodies and the longitudinal board bodies respectively comprise UV coatings, wear-resistant layers, printing layers, filling layers and stabilizing layers which are sequentially arranged from top to bottom;
the filling layer comprises the following components in parts by weight: 20-26 parts of PVC resin, 60-70 parts of stone powder, 5-8 parts of plasticizer, 1-5 parts of flame retardant and 1-2 parts of heat stabilizer; the stone powder comprises at least one of coal gangue powder, marble powder and granite powder;
the stabilizing layer comprises the following components in parts by weight: 25-30 parts of PVC resin, 30-40 parts of coal gangue powder, 25-45 parts of plasticizer, 3-6 parts of lubricant, 1-5 parts of flame retardant and 1-2 parts of heat stabilizer.
2. The PVC fruit separator according to claim 1, wherein: the thickness of the filling layer is 65% -85% of the total thickness of the PVC fruit separator.
3. The PVC fruit separator according to claim 1, wherein: the stone powder in the filling layer comprises coal gangue powder, marble powder and granite powder, and the mass ratio of the coal gangue powder to the marble powder to the granite powder is 3-6: 1-3: 1.5-2.5.
4. The PVC fruit separator according to claim 1, wherein in the filling layer, the ratio of coal gangue powder to marble powder to granite powder is 4.5:2:2 by mass.
5. The PVC fruit separator according to claim 1, wherein: the filling layer comprises the following components in parts by weight: 24 parts of PVC resin, 65 parts of stone powder, 6.5 parts of plasticizer, 3 parts of flame retardant and 1.5 parts of heat stabilizer.
6. The PVC fruit separator according to claim 1, wherein the stabilizing layer comprises the following components in parts by weight: 28 parts of PVC resin, 35 parts of coal gangue powder, 35 parts of plasticizer, 4.5 parts of lubricant, 3 parts of flame retardant and 1.5 parts of heat stabilizer.
7. The PVC fruit spacer of claim 1, wherein the plasticizer comprises DOTP and DINCH, and the mass ratio of DOTP to DINCH is 6-10: 2-4.
8. The PVC fruit spacer of claim 7, wherein the plasticizer has a mass ratio of DOTP to DINCH of 8: 3.
9. The PVC fruit separator plate of claim 1, wherein the transverse plate body is uniformly provided with a plurality of first clamping grooves along the length direction, the longitudinal plate body is uniformly provided with a plurality of second clamping grooves along the length direction, and the first clamping grooves and the second clamping grooves are mutually clamped.
10. The method for preparing the PVC fruit separator according to any one of claims 1 to 9, comprising the following steps:
(1) preparing a filling layer:
putting PVC resin, plasticizer, flame retardant and heat stabilizer into a stirrer according to a formula ratio, uniformly stirring, adding stone powder, uniformly stirring, then banburying the mixed material at 165-185 ℃ for 2.5-8 min, roll-forming the banburied material at the first rolling temperature of 170-180 ℃ and the second rolling temperature of 160-170 ℃, cooling and cutting into a target specification;
(2) preparing a stabilizing layer:
putting PVC resin, a plasticizer, a flame retardant, a lubricant and a heat stabilizer into a stirrer according to a formula ratio, uniformly stirring, adding gangue powder, uniformly stirring, banburying the mixed material at 165-185 ℃ for 2.5-8 min, roll-forming the banburied material at 160-170 ℃ for the first time and 150-160 ℃ for the second time, cooling and cutting into a target specification;
(3) hot-pressing and laminating:
the wear-resistant layer, the printing layer, the filling layer and the stabilizing layer are stacked in sequence and then are laminated in a hot pressing mode, and the hot pressing laminating process comprises the following steps: the time is 30-40 min, the temperature is 120-160 ℃, and the hot pressing weight is 500 t;
(4) UV tempering:
uniformly coating a layer of UV coating on the surface of the floor after hot pressing and attaching, after curing, tempering the transverse plate and the longitudinal plate body, and finally air-drying to obtain the PVC transverse plate and the PVC longitudinal plate body.
(5) Splicing the fruit partition plates:
and the transverse plate body and the longitudinal plate body are respectively provided with a first clamping groove and a second clamping groove, and then the PVC fruit partition plates are spliced.
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Application publication date: 20210420 |