CN112321968B - PVC-bauxite curb stone and preparation method thereof - Google Patents
PVC-bauxite curb stone and preparation method thereof Download PDFInfo
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- CN112321968B CN112321968B CN202011253093.0A CN202011253093A CN112321968B CN 112321968 B CN112321968 B CN 112321968B CN 202011253093 A CN202011253093 A CN 202011253093A CN 112321968 B CN112321968 B CN 112321968B
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- 229910001570 bauxite Inorganic materials 0.000 title claims abstract description 39
- 239000004575 stone Substances 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 238000000227 grinding Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 33
- 239000002699 waste material Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000004605 External Lubricant Substances 0.000 claims abstract description 22
- 239000004609 Impact Modifier Substances 0.000 claims abstract description 22
- 239000004610 Internal Lubricant Substances 0.000 claims abstract description 22
- 239000006084 composite stabilizer Substances 0.000 claims abstract description 22
- 238000001125 extrusion Methods 0.000 claims abstract description 12
- 230000003712 anti-aging effect Effects 0.000 claims description 22
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 7
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical compound OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 claims description 5
- 235000021355 Stearic acid Nutrition 0.000 claims description 5
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- -1 calcium-zinc stearate compound Chemical class 0.000 claims description 5
- 238000013329 compounding Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- OCWMFVJKFWXKNZ-UHFFFAOYSA-L lead(2+);oxygen(2-);sulfate Chemical compound [O-2].[O-2].[O-2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[O-]S([O-])(=O)=O OCWMFVJKFWXKNZ-UHFFFAOYSA-L 0.000 claims description 5
- UMKARVFXJJITLN-UHFFFAOYSA-N lead;phosphorous acid Chemical compound [Pb].OP(O)O UMKARVFXJJITLN-UHFFFAOYSA-N 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical group CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 5
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 5
- 239000012188 paraffin wax Substances 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 235000012424 soybean oil Nutrition 0.000 claims description 5
- 239000003549 soybean oil Substances 0.000 claims description 5
- 239000008117 stearic acid Substances 0.000 claims description 5
- 239000001993 wax Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 12
- 239000002253 acid Substances 0.000 abstract description 10
- 239000003513 alkali Substances 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000004579 marble Substances 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 3
- 230000018109 developmental process Effects 0.000 abstract description 3
- 239000010438 granite Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000004566 building material Substances 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000002791 soaking Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical class [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a PVC-bauxite kerbstone and a preparation method thereof, wherein the kerbstone consists of 46 percent of PVC grinding powder, 42 percent of bauxite, 6 percent of impact modifier, 3 percent of composite stabilizer, 0.7 percent of internal lubricant, 0.7 percent of external lubricant and 1.6 percent of age resister; the invention takes waste PVC plastic and bauxite as raw materials, is a novel composite material production and application technical system formed by an extrusion molding technology, is an optimal practical technology for recycling waste and reducing environmental pollution caused by waste reclaimed materials, is an effective way for producing building material products by recycling waste at present, and is a novel substitute for stone, marble and granite. The composite material product developed by the technology has the advantages of acid and alkali resistance, water resistance, ageing resistance, good fireproof performance and the like, and the development and research of the PVC/bauxite curb stone have profound significance at present when green and environment protection is advocated.
Description
Technical Field
The invention relates to the technical field of building engineering materials, in particular to a PVC-bauxite kerbstone and a preparation method thereof.
Background
Along with the rapid development of Chinese urbanization, about 15.5 hundred million t of construction waste is generated by projects such as new construction, removal and modification and the like every year. The construction waste is a series of solid waste generated in the process of maintaining and dismantling old buildings or building new buildings, and can be reused as a renewable resource after sorting, crushing and screening. The construction waste is treated, crushed, graded and mixed in certain proportion to form aggregate meeting the production requirement of different building products, namely recycled aggregate. The recycled aggregate can be directly applied to construction materials of engineering construction, can completely replace the existing stone materials, marble and the like, and has significant significance for solving the problem of shortage of production resources of the construction materials and huge energy consumption.
The PVC/bauxite curbstone developed by the technology uses waste PVC plastics and bauxite as raw materials, is a novel composite material production and application technology system formed by an extrusion molding technology, is waste recycling, reduces the best practical technology of waste reclaimed materials to environmental pollution, is an effective way for recycling the current wastes to produce building materials, and is also a novel substitute for replacing stone materials, marbles and granite. The composite material product developed by the technology has the advantages of acid and alkali resistance, water resistance, ageing resistance, good fireproof performance and the like, and the development and research of the PVC/bauxite curb stone have profound significance at present when green and environment protection is advocated.
Disclosure of Invention
The invention aims to provide a PVC-bauxite kerbstone and a preparation method thereof, the kerbstone can replace the existing stone materials, marble, granite and the like, and has the advantages of light weight, high strength, aging resistance, acid and alkali resistance, good fireproof performance and the like.
The technical scheme adopted by the invention is as follows:
a PVC-bauxite curbstone consists of PVC grinding powder, bauxite, an impact modifier, a composite stabilizer, an internal lubricant, an external lubricant and an anti-aging agent, and the weight percentage is 100%;
the PVC grinding powder accounts for 46 percent;
the bauxite accounts for 42 percent;
the impact modifier is 6%;
the composite stabilizer accounts for 3 percent;
the internal lubricant is 0.7 percent;
the external lubricant is 0.7 percent;
the anti-aging agent is 1.6 percent.
Further, the PVC grinding powder is one of waste PVC window frame grinding powder and waste PVC water supply pipe grinding powder.
Further, the compound stabilizer is prepared by compounding 10% of tribasic lead sulfate, 10% of dibasic lead phosphite, 5% of monoglyceride, 5% of PE wax, 35% of calcium-zinc stearate compound, 25% of epoxidized soybean oil and 10% of light calcium carbonate; are all in parts by mass.
Further, the internal lubricant is stearic acid.
Further, the external lubricant is paraffin.
Further, the impact modifier is CPE.
Further, the anti-aging agent is prepared by mixing UV-531 and an antioxidant 1010 according to the weight ratio of 1: 1, and the weight ratio is prepared.
The invention also provides a preparation method of the PVC-bauxite kerbstone, which comprises the following steps:
(1) weighing the components according to a formula ratio, then sequentially adding PVC grinding powder, bauxite, an impact modifier, a composite stabilizer, an internal lubricant, an external lubricant and an anti-aging agent into a high-speed mixer for mixing, wherein the rotating speed of a stirring paddle is 660rpm in the mixing process, and stopping mixing when the temperature of the high-speed mixer is raised to 110 ℃;
(2) placing the materials mixed in the step (1) in a cold mixer for rapid cooling and mixing, wherein the rotating speed of a stirring paddle is controlled to be 70rpm in the cooling process; discharging when the temperature is cooled to 45 ℃;
(3) adding the cooled material obtained in the step (2) into a bin of an extruder, melting and plasticizing the material by a double-screw extruder, extruding the material out of a neck ring mold through a mold, wherein the extrusion linear speed is 0.29m/min, the extrusion amount is 1.81kg/min, and then rapidly cooling and shaping, wherein the water temperature during cooling is less than or equal to 20 ℃;
(4) and (4) automatically cutting the cooled product at a fixed length by traction, wherein the cutting size is 1000 +/-20 mm, and thus obtaining the product.
The invention has the beneficial effects that:
the raw materials of the curbstone provided by the invention comprise PVC grinding powder, bauxite, an impact modifier, a composite stabilizer, an internal lubricant, an external lubricant and an anti-aging agent; the prepared curbstone has excellent strength, acid and alkali resistance, aging resistance and fire resistance by adopting a reasonable proportion and a corresponding preparation process; the waste PVC window frame grinding powder, the waste PVC water feeding pipe grinding powder and the bauxite residue are combined, so that waste resources can be recycled, and the comprehensive performance of products is improved.
Detailed Description
The invention is further illustrated by the following examples:
example 1:
a PVC-bauxite kerbstone consists of PVC grinding powder, bauxite, an impact modifier, a composite stabilizer, an internal lubricant, an external lubricant and an anti-aging agent, and the weight percentage is 100 percent;
wherein the PVC grinding powder accounts for 46 percent, and the PVC grinding powder is waste PVC window frame grinding powder;
42% of bauxite;
6% of an impact modifier, wherein the impact modifier is CPE;
the composite stabilizer is 3 percent, wherein the composite stabilizer is prepared by compounding 10 percent of tribasic lead sulfate, 10 percent of dibasic lead phosphite, 5 percent of monoglyceride, 5 percent of PE wax, 35 percent of calcium-zinc stearate compound, 25 percent of epoxidized soybean oil and 10 percent of light calcium carbonate; are all in parts by mass.
0.7% of internal lubricant; wherein the internal lubricant is stearic acid;
the external lubricant is 0.7%; wherein the external lubricant is paraffin wax;
the aging inhibitor content was 1.6%. Wherein the anti-aging agent is prepared from UV-531 and antioxidant 1010 according to the weight ratio of 1: 1, and the weight ratio is prepared.
A preparation method of PVC-bauxite curb stone comprises the following steps:
(1) weighing the components according to a formula ratio, then sequentially adding PVC grinding powder, bauxite, an impact modifier, a composite stabilizer, an internal lubricant, an external lubricant and an anti-aging agent into a high-speed mixer for mixing, wherein the rotating speed of a stirring paddle is 660rpm in the mixing process, and stopping mixing when the temperature of the high-speed mixer is raised to 110 ℃;
(2) placing the materials mixed in the step (1) in a cold mixer for rapid cooling and mixing, wherein the rotating speed of a stirring paddle is controlled to be 70rpm in the cooling process; discharging when the temperature is cooled to 45 ℃;
(3) adding the cooled material obtained in the step (2) into a bin of an extruder, melting and plasticizing the material by a double-screw extruder, extruding the material out of a neck ring mold through a mold, wherein the extrusion linear speed is 0.29m/min, the extrusion amount is 1.81kg/min, and then rapidly cooling and shaping, wherein the water temperature during cooling is less than or equal to 20 ℃;
(4) and (4) automatically cutting the cooled product at a fixed length by traction, wherein the cutting size is 1000 +/-20 mm, and thus obtaining the product.
Example 2:
a PVC-bauxite curbstone consists of PVC grinding powder, bauxite, an impact modifier, a composite stabilizer, an internal lubricant, an external lubricant and an anti-aging agent, and the weight percentage is 100%;
wherein, the PVC grinding powder is 45 percent, and the PVC grinding powder is waste PVC water feeding pipe grinding powder;
40% of bauxite;
7% of an impact modifier, wherein the impact modifier is CPE;
the composite stabilizer is 3 percent, wherein the composite stabilizer is prepared by compounding 10 percent of tribasic lead sulfate, 10 percent of dibasic lead phosphite, 5 percent of monoglyceride, 5 percent of PE wax, 35 percent of calcium-zinc stearate compound, 25 percent of epoxidized soybean oil and 10 percent of light calcium carbonate; are all in parts by mass.
1.5% of internal lubricant; wherein the internal lubricant is stearic acid;
the external lubricant is 1.5%; wherein the external lubricant is paraffin;
the anti-aging agent is 2 percent. Wherein the anti-aging agent is prepared from UV-531 and antioxidant 1010 according to the weight ratio of 1: 1, and the weight ratio is prepared.
A preparation method of PVC-bauxite curb stone comprises the following steps:
(1) weighing the components according to a formula ratio, then sequentially adding PVC grinding powder, bauxite, an impact modifier, a composite stabilizer, an internal lubricant, an external lubricant and an anti-aging agent into a high-speed mixer for mixing, wherein the rotating speed of a stirring paddle is 660rpm in the mixing process, and stopping mixing when the temperature of the high-speed mixer is raised to 110 ℃;
(2) placing the materials mixed in the step (1) into a cold mixer for rapid cooling and mixing, wherein the rotating speed of a stirring paddle is controlled to be 70rpm in the cooling process; discharging when the temperature is cooled to 45 ℃;
(3) adding the cooled material obtained in the step (2) into a bin of an extruder, melting and plasticizing the material by a double-screw extruder, extruding the material out of a neck ring mold through a mold, wherein the extrusion linear speed is 0.29m/min, the extrusion amount is 1.81kg/min, and then rapidly cooling and shaping, wherein the water temperature during cooling is less than or equal to 20 ℃;
(4) and (4) automatically cutting the cooled product at a fixed length by traction, wherein the cutting size is 1000 +/-20 mm, and thus obtaining the product.
Example 3:
a PVC-bauxite curbstone consists of PVC grinding powder, bauxite, an impact modifier, a composite stabilizer, an internal lubricant, an external lubricant and an anti-aging agent, and the weight percentage is 100%;
wherein the PVC grinding powder accounts for 48 percent, and the PVC grinding powder is waste PVC window frame grinding powder;
43% of bauxite;
5% of an impact modifier, wherein the impact modifier is CPE;
the composite stabilizer is 2 percent, wherein the composite stabilizer is prepared by compounding 10 percent of tribasic lead sulfate, 10 percent of dibasic lead phosphite, 5 percent of monoglyceride, 5 percent of PE wax, 35 percent of calcium-zinc stearate compound, 25 percent of epoxidized soybean oil and 10 percent of light calcium carbonate; are all in parts by mass.
0.5% of internal lubricant; wherein the internal lubricant is stearic acid;
the external lubricant is 0.5%; wherein the external lubricant is paraffin wax;
the aging inhibitor is 1 percent. Wherein the anti-aging agent is prepared from UV-531 and antioxidant 1010 according to the weight ratio of 1: 1, and the weight ratio is prepared.
A preparation method of PVC-bauxite curb stone comprises the following steps:
(1) weighing the components according to the formula proportion, then sequentially adding the PVC grinding powder, the bauxite, the impact modifier, the composite stabilizer, the internal lubricant, the external lubricant and the anti-aging agent into a high-speed mixer for mixing, wherein the rotating speed of a stirring paddle is 660rpm in the mixing process, and stopping mixing when the temperature of the high-speed mixer is raised to 110 ℃;
(2) placing the materials mixed in the step (1) in a cold mixer for rapid cooling and mixing, wherein the rotating speed of a stirring paddle is controlled to be 70rpm in the cooling process; discharging when the temperature is cooled to 45 ℃;
(3) adding the cooled material obtained in the step (2) into a bin of an extruder, melting and plasticizing the material by a double-screw extruder, extruding the material out of a neck ring mold through a mold, wherein the extrusion linear speed is 0.29m/min, the extrusion amount is 1.81kg/min, and then rapidly cooling and shaping, wherein the water temperature during cooling is less than or equal to 20 ℃;
(4) and (4) automatically cutting the cooled product at a fixed length by traction, wherein the cutting size is 1000 +/-20 mm, and thus obtaining the product.
Comparative example 1: prepared according to the preparation method of example 1, except the use of the composite stabilizer.
Comparative example 2: the preparation was carried out in accordance with the preparation method of example 1 except for the use of the anti-aging agent.
Comparative example 3: marble purchased from Shandong national Xin Stone Co., Ltd.
And (3) performance testing: the stones of examples 1 to 3 and comparative examples 1 to 3 were cut into test pieces having a length of 50cm, a width of 30cm and a height of 15 cm, respectively, and subjected to the related performance test:
the water absorption test method comprises the following steps: firstly, weighing the test materials respectively, then putting the test materials into distilled water for soaking for 48h, taking out the test materials, wiping the surface moisture of the test piece with a towel, weighing the test materials again, then calculating the water absorption rate of the test materials according to the formula 1,
formula 1: the test piece water absorption = [ (mass after the test piece is soaked in water-mass before the test piece is soaked in water) ÷ mass before the test piece is soaked in water ] × 100%.
The acid resistance measuring method comprises the following steps: directly putting the test material into a sulfuric acid solution with the volume fraction of 1%, soaking for 48h, taking out, washing with clear water, and calculating the acid resistance according to the formula 1.
Alkali resistance measurement method: directly putting the test material into a supersaturated calcium hydroxide solution, soaking for 48h, taking out, washing with clear water, and calculating the alkali resistance according to the formula 1.
The aging performance measuring method comprises the following steps: the test specimens were directly exposed to ultraviolet radiation for 72 hours, and then the aging resistance was calculated according to formula 1. The results are shown in Table 1.
TABLE 1
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Water absorption (%) | 0.2 | 0.26 | 0.22 | 0.6 | 0.9 | 0.4 |
| Acid corrosion ratio (%) | 3.6 | 3.8 | 3.2 | 5.2 | 4.6 | 4.3 |
| Alkaline Corrosion Rate (%) | 2.2 | 2.6 | 2.3 | 3.1 | 2.9 | 2.4 |
| Aging Rate (%) | 0.3 | 0.2 | 0.2 | 1.1 | 6.3 | 0.5 |
As can be seen from the data in Table 1, in comparative example 1 of the present invention, the water absorption performance is significantly increased and the acid and alkali resistance and aging resistance are significantly reduced without using the composite stabilizer; in the comparative example 2, the use of the anti-aging agent is reduced, and the anti-aging performance is obviously weakened; in addition, the water absorption, acid and alkali resistance and ageing resistance of the embodiment 1-3 of the invention are obviously superior to those of the existing marble; the prepared curbstone has excellent strength, acid and alkali resistance, aging resistance and fire resistance by adopting a reasonable proportion and a corresponding preparation process; the waste PVC window frame grinding powder, the waste PVC water feeding pipe grinding powder and the bauxite residue are combined, so that waste resources can be recycled, and the comprehensive performance of products is improved.
It should be noted that the specific embodiments are merely representative examples of the present invention, and it is obvious that the technical solution of the present invention is not limited to the above-mentioned examples, and many variations are possible. Those skilled in the art, having the benefit of this disclosure and the benefit of this written description, will appreciate that other embodiments can be devised which do not depart from the specific details disclosed herein.
Claims (2)
1. The PVC-bauxite kerbstone is characterized by comprising PVC grinding powder, bauxite, an impact modifier, a composite stabilizer, an internal lubricant, an external lubricant and an anti-aging agent, wherein the weight percentage is 100%;
the PVC grinding powder accounts for 46 percent;
the bauxite accounts for 42 percent;
the impact modifier is 6%;
the composite stabilizer accounts for 3 percent;
the internal lubricant is 0.7 percent;
the external lubricant is 0.7 percent;
the anti-aging agent accounts for 1.6 percent;
wherein the PVC grinding powder is one of waste PVC window frame grinding powder and waste PVC water supply pipe grinding powder; the compound stabilizer is prepared by compounding 10% of tribasic lead sulfate, 10% of dibasic lead phosphite, 5% of monoglyceride, 5% of PE wax, 35% of calcium-zinc stearate compound, 25% of epoxidized soybean oil and 10% of light calcium carbonate; are all in parts by mass;
the internal lubricant is stearic acid; the external lubricant is paraffin; the impact modifier is CPE; the anti-aging agent is prepared from UV-531 and an antioxidant 1010 according to the weight ratio of 1: 1, and the weight ratio is prepared.
2. The method for preparing the PVC-bauxite curb stone of claim 1, which is characterized by comprising the following steps:
(1) weighing the components according to a formula ratio, then sequentially adding PVC grinding powder, bauxite, an impact modifier, a composite stabilizer, an internal lubricant, an external lubricant and an anti-aging agent into a high-speed mixer for mixing, wherein the rotating speed of a stirring paddle is 660rpm in the mixing process, and stopping mixing when the temperature of the high-speed mixer is raised to 110 ℃;
(2) placing the materials mixed in the step (1) in a cold mixer for rapid cooling and mixing, wherein the rotating speed of a stirring paddle is controlled to be 70rpm in the cooling process; discharging when the temperature is cooled to 45 ℃;
(3) adding the cooled material obtained in the step (2) into a bin of an extruder, melting and plasticizing the material by a double-screw extruder, extruding the material out of a neck ring mold through a mold, wherein the extrusion linear speed is 0.29m/min, the extrusion amount is 1.81kg/min, and then rapidly cooling and shaping, wherein the water temperature during cooling is less than or equal to 20 ℃;
(4) and (4) automatically cutting the cooled product at a fixed length by traction, wherein the cutting size is 1000 +/-20 mm, and thus obtaining the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011253093.0A CN112321968B (en) | 2020-11-11 | 2020-11-11 | PVC-bauxite curb stone and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011253093.0A CN112321968B (en) | 2020-11-11 | 2020-11-11 | PVC-bauxite curb stone and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN112321968A CN112321968A (en) | 2021-02-05 |
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Denomination of invention: A kind of PVC-bauxite curb and preparation method thereof Effective date of registration: 20220913 Granted publication date: 20220802 Pledgee: Laiwu branch of China Postal Savings Bank Co.,Ltd. Pledgor: Jinan Apollo wood plastic composites Co.,Ltd. Registration number: Y2022980014997 |
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Denomination of invention: A PVC-alumina road edge stone and its preparation method Effective date of registration: 20231013 Granted publication date: 20220802 Pledgee: Laiwu branch of China Postal Savings Bank Co.,Ltd. Pledgor: Jinan Apollo wood plastic composites Co.,Ltd. Registration number: Y2023980061009 |