CN114031865A - Cross-linked PVC foam waste artificial board and preparation method thereof - Google Patents
Cross-linked PVC foam waste artificial board and preparation method thereof Download PDFInfo
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- CN114031865A CN114031865A CN202111307155.6A CN202111307155A CN114031865A CN 114031865 A CN114031865 A CN 114031865A CN 202111307155 A CN202111307155 A CN 202111307155A CN 114031865 A CN114031865 A CN 114031865A
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- 239000002699 waste material Substances 0.000 title claims abstract description 43
- 239000006260 foam Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000000853 adhesive Substances 0.000 claims abstract description 30
- 230000001070 adhesive effect Effects 0.000 claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 23
- 239000007822 coupling agent Substances 0.000 claims abstract description 21
- 239000010410 layer Substances 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 239000002356 single layer Substances 0.000 claims abstract description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 6
- 241001330002 Bambuseae Species 0.000 claims abstract description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 6
- 239000011425 bamboo Substances 0.000 claims abstract description 6
- 239000003365 glass fiber Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 239000003822 epoxy resin Substances 0.000 claims description 13
- 229920000647 polyepoxide Polymers 0.000 claims description 13
- 229920005862 polyol Polymers 0.000 claims description 12
- 150000003077 polyols Chemical class 0.000 claims description 12
- 239000012948 isocyanate Substances 0.000 claims description 11
- 150000002513 isocyanates Chemical class 0.000 claims description 11
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 9
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- -1 polymethylene Polymers 0.000 claims description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 2
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 150000001408 amides Chemical class 0.000 claims description 2
- 150000008064 anhydrides Chemical class 0.000 claims description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229920001228 polyisocyanate Polymers 0.000 claims description 2
- 239000005056 polyisocyanate Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 229910000077 silane Inorganic materials 0.000 claims description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 2
- 239000013638 trimer Substances 0.000 claims description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims 2
- 239000012257 stirred material Substances 0.000 abstract description 17
- 239000002910 solid waste Substances 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 29
- 229920000915 polyvinyl chloride Polymers 0.000 description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000004721 Polyphenylene oxide Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 229920000570 polyether Polymers 0.000 description 8
- VYKXQOYUCMREIS-UHFFFAOYSA-N methylhexahydrophthalic anhydride Chemical compound C1CCCC2C(=O)OC(=O)C21C VYKXQOYUCMREIS-UHFFFAOYSA-N 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 239000011162 core material Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002508 compound effect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention belongs to the technical field of composite materials, and particularly relates to a cross-linked PVC foam waste artificial board and a preparation method thereof, which solve the problems that a large amount of solid waste is generated in the manufacturing process of a cross-linked PVC foam sleeve material and waste wind power blades are difficult to recover in the prior art. The preparation method comprises the following steps: pouring the crosslinked PVC foam waste and the coupling agent into a planetary stirring kettle, and mixing; adding the resin adhesive into a planetary stirring kettle, and mixing; dividing the stirred material into a plurality of parts, and paving a layer of reinforcing ribs in each part of the stirred material poured into a mould; the reinforcing ribs are one or more of bamboo sticks, glass fiber bundles and the skins of the waste wind power blades; placing the mold on a single-layer flat vulcanizing machine, pressurizing, and keeping the pressure at normal temperature to obtain a prepressing plate; and taking out the prepressing plate from the mold, conveying the prepressing plate into a multi-layer flat vulcanizing machine for pressurization, keeping the pressure, cooling to below, and taking out. Compared with the existing artificial board, the artificial board prepared by the invention has excellent mechanical property and moisture resistance, and can be used indoors and outdoors.
Description
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to a cross-linked PVC waste artificial board and a preparation method thereof.
Background
The hard cross-linked polyvinyl chloride foamed plastic is an indispensable core material of the wind power blade, and about 30 percent of solid waste can be generated in the processing process of the hard cross-linked polyvinyl chloride foamed plastic. The disposal of these solid wastes, as well as the disposal of the waste leaves, is currently still an industrial problem. This is mainly due to the fact that the foam is a thermoset and cannot be reprocessed. At present, the mainstream treatment modes are incineration and landfill, which not only increases the cost of the wind power industry, but also brings huge environmental hidden dangers.
Although the patent CN101733893A provides a solution, the technical solution has much higher glue consumption and product density than the commercially available products with the same functions, and is difficult to be accepted and popularized by the market. The wind power industry urgently needs a feasible crosslinked PVC foam waste and a wind power blade recovery scheme.
The invention makes the cross-linked PVC foam waste into the artificial board by a specific technical means, and realizes zero solid waste of the cross-linked PVC foam core material in a wind power industry chain. The nail-holding power and the moisture resistance of the artificial board are far beyond that of a shaving board, and the artificial board can be used indoors and outdoors and has strong market competitiveness.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a cross-linked PVC waste artificial board and a preparation method thereof, and provides a feasible technical scheme for treating core material solid waste in the wind power industry.
The technical scheme of the invention is as follows: according to the first aspect of the invention, a method for preparing a cross-linked PVC foam waste artificial board is provided, which is characterized by comprising the following steps:
s1: pouring 100 parts by weight of cross-linked PVC foam waste and 0.1-5 parts by weight of coupling agent into a planetary stirring kettle, and mixing for 5-10 min;
s2: adding 5-30 parts of resin adhesive into a planetary stirring kettle, and mixing for 5-10 min; the resin adhesive comprises 100 parts of polyol, 150-200 parts of isocyanate, 30-90 parts of epoxy resin and 10-50 parts of curing agent;
s3: dividing the material stirred in the step S2 into multiple parts, and paving a layer of reinforcing ribs when pouring one part of the material into a mold;
s4: placing the mold on a single-layer flat vulcanizing machine, pressurizing at 10-15MPa, and keeping the pressure at normal temperature for 5-10min to obtain a pre-pressing plate;
s5: taking out the prepressing plate from the mold, transferring the prepressing plate into a multi-layer flat vulcanizing machine, pressurizing to 3-5MPa, keeping the pressure at 70-100 ℃ for 30-100min, cooling to below 40 ℃, and taking out.
In one possible embodiment, the reinforcing ribs are one or more of bamboo sticks, glass fiber bundles and waste wind power blade skins
Preferably, the cross-linked PVC foam waste is powder with the particle size of less than 3 mm.
Preferably, the coupling agent is at least one of a chromium complex, a silane and a titanate.
Preferably, the polyol has a functionality of 3 or more and a hydroxyl value of 300mgKOH/g or more.
Preferably, the isocyanate is at least one of toluene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate trimer and polymethylene polyphenyl polyisocyanate.
Preferably, the epoxy resin is at least one of bisphenol a type, bisphenol F type, and bisphenol S type epoxy resins.
Preferably, the curing agent is at least one of anhydride, amide and carboxylic acid.
According to a second aspect of the invention, a cross-linked PVC foamed waste artificial board is provided, which is manufactured by adopting the preparation method of the cross-linked PVC foamed waste artificial board.
Compared with the prior art, the invention has the beneficial effects that:
1) by adopting the coupling agent bonding system of the invention to generate a compound effect, the glue application amount during the manufacturing of the artificial board can be obviously reduced, and the moisture resistance of the board is greatly improved;
2) by adopting the reinforcing system, the mechanical property of the artificial board can be improved by times;
3) the technical scheme of the invention can realize 100% utilization of the waste blades.
Detailed Description
For a further understanding of the invention, preferred embodiments of the invention are described below in conjunction with the examples, but it should be understood that these descriptions are included merely to further illustrate the features and advantages of the invention and are not intended to limit the invention to the claims. The starting materials used in the examples are all commercially available.
Example 1
The formula comprises 100 parts of cross-linked PVC foam waste powder, 5 parts of KH560 coupling agent and 10 parts of adhesive, wherein the adhesive formula comprises 100 parts of 4110 polyether polyol, 150 parts of PM-200 polymethine polyphenyl isocyanate, 100 parts of E51 epoxy resin and 50 parts of methylhexahydrophthalic anhydride with the water content of 10%. The process comprises the following steps:
s1: pouring the crosslinked PVC foam waste powder and the coupling agent into a planetary stirring kettle, and mixing for 5 min;
s2: adding the prepared adhesive into a planetary stirring kettle, and mixing for 5 min;
s3: dividing the stirred material into 4 parts, and laying a layer of reinforcing ribs when pouring each part of the stirred material into a mould, wherein the reinforcing ribs are bamboo sticks with the diameter of 2 mm;
s4: placing the mold on a single-layer flat vulcanizing machine, pressurizing at 10MPa, and keeping the pressure at normal temperature for 5 min;
s5: and taking out the prepressing plate from the mold, conveying the prepressing plate into a multi-layer flat vulcanizing machine, pressurizing for 3MPa, keeping the pressure at 100 ℃ for 30min, cooling to below 40 ℃, and taking out.
Example 2
The formula comprises 100 parts of cross-linked PVC foam waste powder, 5 parts of KH560 coupling agent and 10 parts of adhesive, wherein the adhesive formula comprises 100 parts of 4110 polyether polyol, 150 parts of PM-200 polymethine polyphenyl isocyanate, 100 parts of E51 epoxy resin and 50 parts of methylhexahydrophthalic anhydride with the water content of 10%. The process comprises the following steps:
s1: pouring the crosslinked PVC foam waste powder and the coupling agent into a planetary stirring kettle, and mixing for 5 min;
s2: adding the prepared adhesive into a planetary stirring kettle, and mixing for 5 min;
s3: dividing the stirred material into 4 parts, and paving a layer of reinforcing rib in each part of the stirred material poured into a mould, wherein the reinforcing rib is a waste blade skin with the width of 3 mm;
s4: placing the mold on a single-layer flat vulcanizing machine, pressurizing at 10MPa, and keeping the pressure at normal temperature for 5 min;
s5: and taking out the prepressing plate from the mold, conveying the prepressing plate into a multi-layer flat vulcanizing machine, pressurizing for 3MPa, keeping the pressure at 100 ℃ for 30min, cooling to below 40 ℃, and taking out.
Example 3
The formula comprises 100 parts of cross-linked PVC foam waste powder, 5 parts of KH560 coupling agent and 10 parts of adhesive, wherein the adhesive formula comprises 100 parts of 4110 polyether polyol, 150 parts of PM-200 polymethine polyphenyl isocyanate, 100 parts of E51 epoxy resin and 50 parts of methylhexahydrophthalic anhydride with the water content of 10%. The process comprises the following steps:
s1: pouring the crosslinked PVC foam waste powder and the coupling agent into a planetary stirring kettle, and mixing for 5 min;
s2: adding the prepared adhesive into a planetary stirring kettle, and mixing for 5 min;
s3: dividing the stirred material into 4 parts, and laying a layer of reinforcing ribs when pouring each part of the stirred material into a mold, wherein the reinforcing ribs are glass fiber mesh cloth with the aperture of 5 mm;
s4: placing the mold on a single-layer flat vulcanizing machine, pressurizing at 10MPa, and keeping the pressure at normal temperature for 5 min;
s5: and taking out the prepressing plate from the mold, conveying the prepressing plate into a multi-layer flat vulcanizing machine, pressurizing for 3MPa, keeping the pressure at 100 ℃ for 30min, cooling to below 40 ℃, and taking out.
Example 4
The formula comprises 100 parts of cross-linked PVC foam waste powder, 5 parts of KH560 coupling agent and 10 parts of adhesive, wherein the adhesive formula comprises 100 parts of 4110 polyether polyol, 150 parts of PM-200 polymethine polyphenyl isocyanate, 100 parts of E44 epoxy resin and 50 parts of methylhexahydrophthalic anhydride with the water content of 10%. The process comprises the following steps:
s1: pouring the crosslinked PVC foam waste powder and the coupling agent into a planetary stirring kettle, and mixing for 5 min;
s2: adding the prepared adhesive into a planetary stirring kettle, and mixing for 5 min;
s3: dividing the stirred material into 4 parts, and laying a layer of reinforcing ribs when pouring each part of the stirred material into a mold, wherein the reinforcing ribs are glass fiber mesh cloth with the aperture of 5 mm;
s4: placing the mold on a single-layer flat vulcanizing machine, pressurizing at 10MPa, and keeping the pressure at normal temperature for 5 min;
s5: and taking out the prepressing plate from the mold, conveying the prepressing plate into a multi-layer flat vulcanizing machine, pressurizing for 3MPa, keeping the pressure at 100 ℃ for 30min, cooling to below 40 ℃, and taking out.
Example 5
The formula comprises 100 parts of crosslinked PVC foam waste powder, 5 parts of KH550 coupling agent and 10 parts of adhesive, wherein the adhesive formula comprises 100 parts of 4110 polyether polyol, 150 parts of PM-200 polymethine polyphenyl isocyanate, 100 parts of E51 epoxy resin and 50 parts of methylhexahydrophthalic anhydride with the water content of 10%. The process comprises the following steps:
s1: pouring the crosslinked PVC foam waste powder and the coupling agent into a planetary stirring kettle, and mixing for 5 min;
s2: adding the prepared adhesive into a planetary stirring kettle, and mixing for 5 min;
s3: dividing the stirred material into 4 parts, and laying a layer of reinforcing ribs when pouring each part of the stirred material into a mold, wherein the reinforcing ribs are glass fiber mesh cloth with the aperture of 5 mm;
s4: placing the mold on a single-layer flat vulcanizing machine, pressurizing at 10MPa, and keeping the pressure at normal temperature for 5 min;
s5: and taking out the prepressing plate from the mold, conveying the prepressing plate into a multi-layer flat vulcanizing machine, pressurizing for 3MPa, keeping the pressure at 100 ℃ for 30min, cooling to below 40 ℃, and taking out.
Comparative example 1
The adhesive comprises 100 parts of crosslinked PVC foam waste powder and 10 parts of adhesive, wherein the adhesive comprises 100 parts of 4110 polyether polyol, 150 parts of PM-200 polymetaphenylene isocyanate, 100 parts of E51 epoxy resin and 50 parts of methylhexahydrophthalic anhydride with the water content of 10%. The process comprises the following steps:
s1: adding the crosslinked PVC foam waste powder and the prepared adhesive into a planetary stirring kettle, and mixing for 5 min;
s2: dividing the stirred material into 4 parts, and laying a layer of reinforcing ribs when pouring each part of the stirred material into a mould, wherein the reinforcing ribs are bamboo sticks with the diameter of 2 mm;
s3: placing the mold on a single-layer flat vulcanizing machine, pressurizing at 10MPa, and keeping the pressure at normal temperature for 5 min;
s4: and taking out the prepressing plate from the mold, conveying the prepressing plate into a multi-layer flat vulcanizing machine, pressurizing for 3MPa, keeping the pressure at 100 ℃ for 30min, cooling to below 40 ℃, and taking out.
Comparative example 2
The formula comprises 100 parts of cross-linked PVC foam waste powder, 5 parts of KH560 coupling agent and 10 parts of adhesive, wherein the adhesive formula comprises 100 parts of 4110 polyether polyol and 150 parts of PM-200 polymethine polyphenyl isocyanate. The process comprises the following steps:
s1: pouring the crosslinked PVC foam waste powder and the coupling agent into a planetary stirring kettle, and mixing for 5 min;
s2: adding the prepared adhesive into a planetary stirring kettle, and mixing for 5 min;
s3: dividing the stirred material into 4 parts, and laying a layer of reinforcing ribs when pouring each part of the stirred material into a mould, wherein the reinforcing ribs are bamboo sticks with the diameter of 2 mm;
s4: placing the mold on a single-layer flat vulcanizing machine, pressurizing at 10MPa, and keeping the pressure at normal temperature for 5 min;
s5: and taking out the prepressing plate from the mold, conveying the prepressing plate into a multi-layer flat vulcanizing machine, pressurizing for 3MPa, keeping the pressure at 100 ℃ for 30min, cooling to below 40 ℃, and taking out.
Comparative example 3
The formula comprises 100 parts of cross-linked PVC foam waste powder, 5 parts of KH560 coupling agent and 10 parts of adhesive, wherein the adhesive formula comprises 100 parts of 4110 polyether polyol, 150 parts of PM-200 polymethine polyphenyl isocyanate, 100 parts of E51 epoxy resin and 50 parts of methylhexahydrophthalic anhydride with the water content of 10%. The process comprises the following steps:
s1: pouring the crosslinked PVC foam waste powder and the coupling agent into a planetary stirring kettle, and mixing for 5 min;
s2: adding the prepared adhesive into a planetary stirring kettle, and mixing for 5 min;
s3: directly pouring the stirred material into a mould without laying reinforcing ribs;
s4: placing the mold on a single-layer flat vulcanizing machine, pressurizing at 10MPa, and keeping the pressure at normal temperature for 5 min;
s5: and taking out the prepressing plate from the mold, conveying the prepressing plate into a multi-layer flat vulcanizing machine, pressurizing for 3MPa, keeping the pressure at 100 ℃ for 30min, cooling to below 40 ℃, and taking out.
Performance testing and results demonstration
In order to further illustrate the gain effect of the invention, the performance tests are performed in examples 1-5 and comparative examples 1-3, and the test method comprises the following steps:
the bending strength GB/T17657-2013, the bending modulus GB/T17657-2013, the water absorption thickness expansion GB/T17657-2013, the moisture resistance GB/T17657-2013, the nail-holding power GB/T17657-2013 and the internal bonding force GB/T17657-2013. The test index is GB/T4897-2015P 11 type. The measurement results are shown in table 1.
The bending strength and modulus test results of the example and the comparative example 3 show that the reinforcing rib system of the invention can effectively improve the bending resistance of the plate. Comparative example 1 was significantly reduced in flexural performance because the components did not bond effectively at low sizing levels without the addition of a coupling agent and delamination occurred during testing. The water swell and moisture resistance test results of the examples and comparative example 2 show that the moisture resistance of the board can be remarkably improved by introducing the epoxy system. The comparison of the test results of the examples with the national standard requirements shows that the indexes of the invention far exceed the requirements of the use standard.
Table 1 results of performance test of examples and comparative examples
Claims (8)
1. A preparation method of a cross-linked PVC foam waste artificial board is characterized by comprising the following steps:
s1: pouring 100 parts by weight of cross-linked PVC foam waste and 0.1-5 parts by weight of coupling agent into a planetary stirring kettle, and mixing for 5-10 min;
s2: adding 5-30 parts of resin adhesive into a planetary stirring kettle, and mixing for 5-10 min; the resin adhesive comprises 100 parts of polyol, 150-200 parts of isocyanate, 30-90 parts of epoxy resin and 10-50 parts of curing agent;
s3: dividing the material stirred in the step S2 into multiple parts, and paving a layer of reinforcing ribs when pouring one part of the material into a mold; the reinforcing ribs are one or more of bamboo sticks, glass fiber bundles and the skins of the waste wind power blades;
s4: placing the mold on a single-layer flat vulcanizing machine, pressurizing at 10-15MPa, and keeping the pressure at normal temperature for 5-10min to obtain a pre-pressing plate;
s5: taking out the prepressing plate from the mold, transferring the prepressing plate into a multi-layer flat vulcanizing machine, pressurizing to 3-5MPa, keeping the pressure at 70-100 ℃ for 30-100min, cooling to below 40 ℃, and taking out.
2. The method for preparing a crosslinked PVC foamed waste artificial board according to claim 1, wherein the crosslinked PVC foamed waste is a powder with a particle size of less than 3 mm.
3. The method of claim 1, wherein the coupling agent is at least one of a chromium complex, a silane, and a titanate.
4. The method of claim 1, wherein the polyol has a functionality of 3 or more and a hydroxyl number of 300mgKOH/g or more.
5. The method of claim 1, wherein the isocyanate is at least one of toluene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate trimer, and polymethylene polyphenyl polyisocyanate.
6. The method of claim 1, wherein the epoxy resin is at least one of bisphenol A, bisphenol F, and bisphenol S epoxy resin.
7. The method for preparing a crosslinked PVC foamed waste artificial board according to claim 1, wherein the curing agent is at least one of anhydride, amide and carboxylic acid.
8. A crosslinked PVC foamed waste artificial board manufactured by the method for manufacturing a crosslinked PVC foamed waste artificial board according to any one of claims 1 to 8.
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| CN103370389A (en) * | 2011-01-21 | 2013-10-23 | 东洋油墨Sc控股株式会社 | Adhesive agent composition and laminated body |
| CN112143125A (en) * | 2019-06-28 | 2020-12-29 | 合肥杰事杰新材料股份有限公司 | Polyvinyl chloride material and preparation method thereof |
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2021
- 2021-11-05 CN CN202111307155.6A patent/CN114031865A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201043162Y (en) * | 2007-04-05 | 2008-04-02 | 徐凌秀 | Composite material of wood and plastic, and products thereof |
| CN101733893A (en) * | 2009-12-09 | 2010-06-16 | 常州天晟新材料股份有限公司 | Method for producing composite foam sheet from foam scrap with cross-linked polrvinyl chloride structure |
| CN103370389A (en) * | 2011-01-21 | 2013-10-23 | 东洋油墨Sc控股株式会社 | Adhesive agent composition and laminated body |
| CN112143125A (en) * | 2019-06-28 | 2020-12-29 | 合肥杰事杰新材料股份有限公司 | Polyvinyl chloride material and preparation method thereof |
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