CN109206780A - A kind of foamed polyvinyl chloride sill and preparation method thereof - Google Patents
A kind of foamed polyvinyl chloride sill and preparation method thereof Download PDFInfo
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/125—Water, e.g. hydrated salts
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- C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
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- C08J2327/00—Characterised by the use 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; Derivatives of such polymers
- C08J2327/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
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- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/12—Amylose; Amylopectin; Degradation products thereof
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- C08J2427/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
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- C08J2429/00—Characterised by the use 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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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Abstract
The invention is related to a kind of foamed polyvinyl chloride sill, including following raw material components: modified polyvinyl chloride, starch conversion polyvinyl chloride, modified EVA, modified PVA, modified polyvinyl chloride is by polyvinyl chloride, methyl diphenylene diisocyanate and dibutyl tin dilaurate reaction are made, starch conversion polyvinyl chloride is by polyvinyl chloride, amylopectin, glycerol, diethylene glycol (DEG) and 15%(wt.%) aqueous solution of urea reaction be made, modified EVA is by EVA, oxalic acid, urea, methyl methacrylate, Isooctyl acrylate monomer, methyl acrylate and the reaction of 819 photoinitiators are made, modified PVA is by PVA BP-05, calcium sulphate dihydrate and cupric sulfate pentahydrate reaction are made.The invention has excellent frothing percentage and low-density.
Description
Technical field
The invention is related to a kind of foamed polyvinyl chloride sill and preparation method thereof.
Background technique
Polyvinyl chloride because its with excellent wearability, waterproofness, water-mist-proof, inorganic acid resistance burn into anti-yellowing property,
The advantages such as mechanical strength.Polyvinyl chloride be widely used in stainless steel product protection pad pasting, plastic packaging containers, anti-slip carpet,
The fields such as municipal wastewater discharge tube, tap water conveyance conduit, plastic shopping bag, agricultural film.
Currently, pvc material needs further to be promoted in frothing percentage and low-density.The invention uses modified polyvinyl chloride
Alkene, starch conversion polyvinyl chloride, modified EVA, modified PVA are prepared for foamed polyvinyl chloride sill, the foaming of this method preparation
Polyvinyl chloride sill has excellent frothing percentage and low-density.
Summary of the invention
A kind of preparation method for being designed to provide foamed polyvinyl chloride sill of the invention, this method are anti-by changing
Raw material and technology mode are answered, the material of preparation has excellent frothing percentage and low-density.
To achieve the goals above, the technical solution of the invention is as follows.
A kind of foamed polyvinyl chloride sill and preparation method thereof, specifically includes the following steps: (1), by PVA BP-05,
Calcium sulphate dihydrate and cupric sulfate pentahydrate are added in reaction kettle according to mass parts ratio for 37:18~27:11~23, mixing speed
For 80r/min, 45min is reacted under the conditions of 65~73 DEG C of maintenance system temperature, product is transferred in hydrothermal reaction kettle, maintained
Hydrothermal temperature is 58~67 DEG C of reaction 30min, is cooled to room temperature, and crushes, obtains modified PVA；(2), by EVA, oxalic acid, urine
Element, methyl methacrylate, Isooctyl acrylate monomer, methyl acrylate and 819 photoinitiators according to mass parts ratio be 67:17~
28:27~35:16~23:4~15:2~5:0.3~1 is added in reaction kettle, mixing speed 83r/min, maintenance system temperature
23~36min is reacted under the conditions of 32 DEG C of degree, product crushes through 3000W 8~14s of lamp and high pressure mercury, obtains modified EVA；
It (3), is 68:21 according to mass parts ratio by polyvinyl chloride, amylopectin, glycerol, diethylene glycol (DEG) and 15%(wt.%) aqueous solution of urea
~29:8~14:7~13:5~12 are added in ball mill, drum speed 16r/min, and ball milling temperature is 35 DEG C of ball-milling reactions
35min to get arrive starch conversion polyvinyl chloride；(4), by polyvinyl chloride, methyl diphenylene diisocyanate and tin dilaurate two
Butyl tin is that 73:15~27:0.5~2 are added in high-speed mixer according to mass parts ratio, with high-speed mixer in temperature
157~168 DEG C of 1~4min of hybrid reaction are crushed and are gathered to get to modified with extruder in 169~175 DEG C of extruding pelletizations of temperature
Vinyl chloride；(5), it is 82 according to mass parts ratio by modified polyvinyl chloride, starch conversion polyvinyl chloride, modified EVA, modified PVA:
29~33:56~65:35~41 are added in vulcanizing press, are formed in 178 DEG C to get foamed polyvinyl chloride sill is arrived.
The preparation method of foamed polyvinyl chloride sill described in the invention, including the following steps:
(1), PVA BP-05, calcium sulphate dihydrate and cupric sulfate pentahydrate are added according to mass parts ratio for 37:18~27:11~23
Enter into reaction kettle, mixing speed 80r/min, react 45min under the conditions of 65~73 DEG C of maintenance system temperature, product is turned
It moves in hydrothermal reaction kettle, maintenance hydrothermal temperature is 58~67 DEG C of reaction 30min, is cooled to room temperature, and crushes, is modified
PVA；The purpose of the PVA BP-05 is in order to protect the crystallization water of calcium sulphate dihydrate and cupric sulfate pentahydrate.
(2), EVA, oxalic acid, urea, methyl methacrylate, Isooctyl acrylate monomer, methyl acrylate and 819 are light-initiated
Agent is that 67:17~28:27~35:16~23:4~15:2~5:0.3~1 is added in reaction kettle according to mass parts ratio, is stirred
Mixing speed is 83r/min, reacts 23~36min under the conditions of 32 DEG C of maintenance system temperature, product is through 3000W lamp and high pressure mercury 8
~14s crushes, obtains modified EVA；The purpose of the methyl methacrylate, Isooctyl acrylate monomer and methyl acrylate is
Avoid the decomposition of oxalic acid and urea.
(3), by polyvinyl chloride, amylopectin, glycerol, diethylene glycol (DEG) and 15%(wt.%) aqueous solution of urea according to mass fraction
Than being added in ball mill for 68:21~29:8~14:7~13:5~12, drum speed 16r/min, ball milling temperature is 35
DEG C ball-milling reaction 35min is to get arriving starch conversion polyvinyl chloride；The purpose of the amylopectin is in order to improve polyvinyl chloride material
The expansion ratio and density of material.
(4), it is according to mass parts ratio by polyvinyl chloride, methyl diphenylene diisocyanate and dibutyl tin dilaurate
73:15~27:0.5~2 are added in high-speed mixer, with high-speed mixer 157~168 DEG C of hybrid reactions 1 of temperature~
4min is crushed with extruder in 169~175 DEG C of extruding pelletizations of temperature to get modified polyvinyl chloride is arrived；The diphenylmethyl
The purpose of alkane diisocyanate is in order to improve the expansion ratio and density of foamed polyvinyl chloride sill.
(5), it is according to mass parts ratio by modified polyvinyl chloride, starch conversion polyvinyl chloride, modified EVA, modified PVA
82:29~33:56~65:35~41 are added in vulcanizing press, are formed in 178 DEG C to get foamed polyvinyl chloride substrate is arrived
Material.
Invention has the beneficial effects that:
1, PVA BP-05 has low viscosity and low molecular weight, can wrap at a lower temperature calcium sulphate dihydrate and cupric sulfate pentahydrate
It covers inside it, reduces the loss amount of the crystallization water in calcium sulphate dihydrate and cupric sulfate pentahydrate；The modified PVA of preparation inside it because containing
There is crystallization water energy to improve the expansion ratio and density of foamed polyvinyl chloride sill；
2, oxalic acid and urea are heated easily decomposes, and methyl methacrylate, Isooctyl acrylate monomer and methyl acrylate are by dipping
After handling oxalic acid, urea and EVA, one layer of polymeric protective film can be formed on oxalic acid, urea and the surface EVA, avoid oxalic acid and
Urea being thermally decomposed during storage；The modified EVA of preparation can improve foamed polyvinyl chloride sill expansion ratio and
Density；
3, amylopectin has bulkiness, thickening property and low-density, while dispersibility of the material in polyvinyl chloride can be improved,
Its fluffy performance improves the pore structure of polyvinyl chloride by package air；The starch conversion polyvinyl chloride of preparation can improve foaming
The expansion ratio and density of polyvinyl chloride sill；
4, methyl diphenylene diisocyanate can chemically react in conjunction with the water in starch conversion polyvinyl chloride, and as hair
Steep the pore creating material of polyvinyl chloride sill；The modified polyvinyl chloride of preparation can significantly improve foamed polyvinyl chloride sill；
5, under modified polyvinyl chloride, starch conversion polyvinyl chloride, modified EVA, modified PVA synergistic effect, foaming polychlorostyrene is assigned
The excellent expansion ratio of vinyl material and density.
Specific embodiment
It is described below with reference to specific embodiment of the embodiment to the invention, to better understand the invention.
Embodiment 1
A kind of foamed polyvinyl chloride sill, preparation method includes the following steps:
(1), it weighs 37 parts of PVA BP-05,23 parts of calcium sulphate dihydrates and 18 parts of cupric sulfate pentahydrates to be added in reaction kettle, stirring speed
Degree is 80r/min, reacts 45min under the conditions of 66 DEG C of maintenance system temperature, product is transferred in hydrothermal reaction kettle, maintains water
Thermal response temperature is 60 DEG C of reaction 30min, is cooled to room temperature, and crushes, obtains modified PVA；
(2), weigh 67 parts of EVA, 24 parts of oxalic acid, 31 parts of urea, 19 parts of methyl methacrylates, 8.9 parts of Isooctyl acrylate monomers,
3.2 parts of methyl acrylates and 0.5 part of 819 photoinitiator are added in reaction kettle, mixing speed 83r/min, maintenance system temperature
28min is reacted under the conditions of 32 DEG C of degree, product crushes through 3000W lamp and high pressure mercury 10s, obtains modified EVA；
(3), 68 parts of polyvinyl chloride, 25 parts of amylopectin, 11 parts of glycerol, 9 portions of diethylene glycol (DEG)s and 7 parts of 15%(wt.% are weighed) urea water
Solution is added in ball mill, drum speed 16r/min, and ball milling temperature is that 35 DEG C of ball-milling reaction 35min change to get to starch
Property polyvinyl chloride；
(4), 73 parts of polyvinyl chloride, 22 parts of methyl diphenylene diisocyanates and 0.7 part of dibutyl tin dilaurate is weighed to be added
Into high-speed mixer, with high-speed mixer in 167 DEG C of hybrid reaction 2min of temperature, made with extruder in 170 DEG C of extrusions of temperature
Grain crushes to get modified polyvinyl chloride is arrived；
(5), 82 parts of modified polyvinyl chlorides, 31 parts of starch conversion polyvinyl chloride, 59 parts of modified EVAs, 37 parts of modified PVAs are weighed to be added
Into vulcanizing press, formed in 178 DEG C to get foamed polyvinyl chloride sill is arrived.
Embodiment 2
A kind of foamed polyvinyl chloride sill, preparation method includes the following steps:
(1), it weighs 37 parts of PVA BP-05,18 parts of calcium sulphate dihydrates and 11 parts of cupric sulfate pentahydrates to be added in reaction kettle, stirring speed
Degree is 80r/min, reacts 45min under the conditions of 65 DEG C of maintenance system temperature, product is transferred in hydrothermal reaction kettle, maintains water
Thermal response temperature is 58 DEG C of reaction 30min, is cooled to room temperature, and crushes, obtains modified PVA；
(2), 67 parts of EVA, 17 parts of oxalic acid, 27 parts of urea, 16 parts of methyl methacrylates, 4 parts of Isooctyl acrylate monomers, 2 parts are weighed
Methyl acrylate and 0.3 part of 819 photoinitiator are added in reaction kettle, mixing speed 83r/min, maintenance system temperature 32
23min is reacted under the conditions of DEG C, product crushes through 3000W lamp and high pressure mercury 8s, obtains modified EVA；
(3), 68 parts of polyvinyl chloride, 21 parts of amylopectin, 8 parts of glycerol, 7 portions of diethylene glycol (DEG)s and 5 parts of 15%(wt.% are weighed) urea is water-soluble
Liquid is added in ball mill, drum speed 16r/min, and ball milling temperature is 35 DEG C of ball-milling reaction 35min to get starch conversion is arrived
Polyvinyl chloride；
(4), 73 parts of polyvinyl chloride, 15 parts of methyl diphenylene diisocyanates and 0.5 part of dibutyl tin dilaurate is weighed to be added
Into high-speed mixer, with high-speed mixer in 157 DEG C of hybrid reaction 4min of temperature, made with extruder in 169 DEG C of extrusions of temperature
Grain crushes to get modified polyvinyl chloride is arrived；
(5), 82 parts of modified polyvinyl chlorides, 29 parts of starch conversion polyvinyl chloride, 56 parts of modified EVAs, 35 parts of modified PVAs are weighed to be added
Into vulcanizing press, formed in 178 DEG C to get foamed polyvinyl chloride sill is arrived.
Embodiment 3
A kind of foamed polyvinyl chloride sill, preparation method includes the following steps:
(1), it weighs 37 parts of PVA BP-05,27 parts of calcium sulphate dihydrates and 23 parts of cupric sulfate pentahydrates to be added in reaction kettle, stirring speed
Degree is 80r/min, reacts 45min under the conditions of 73 DEG C of maintenance system temperature, product is transferred in hydrothermal reaction kettle, maintains water
Thermal response temperature is 67 DEG C of reaction 30min, is cooled to room temperature, and crushes, obtains modified PVA；
(2), 67 parts of EVA, 28 parts of oxalic acid, 35 parts of urea, 23 parts of methyl methacrylates, 15 parts of Isooctyl acrylate monomers, 5 parts are weighed
Methyl acrylate and 1 part of 819 photoinitiator are added in reaction kettle, mixing speed 83r/min, and 32 DEG C of maintenance system temperature
Under the conditions of react 36min, product crushes through 3000W lamp and high pressure mercury 14s, obtains modified EVA；
(3), 68 parts of polyvinyl chloride, 29 parts of amylopectin, 14 parts of glycerol, 13 portions of diethylene glycol (DEG)s and 12 parts of 15%(wt.% are weighed) urea
Aqueous solution is added in ball mill, drum speed 16r/min, and ball milling temperature is 35 DEG C of ball-milling reaction 35min to get starch is arrived
Modified polyvinyl chloride；
(4), 73 parts of polyvinyl chloride, 27 parts of methyl diphenylene diisocyanates and 2 parts of dibutyl tin dilaurates are weighed to be added to
In high-speed mixer, with high-speed mixer in 168 DEG C of hybrid reaction 1min of temperature, with extruder in 175 DEG C of extruding pelletizations of temperature,
It crushes to get modified polyvinyl chloride is arrived；
(5), 82 parts of modified polyvinyl chlorides, 33 parts of starch conversion polyvinyl chloride, 65 parts of modified EVAs, 41 parts of modified PVAs are weighed to be added
Into vulcanizing press, formed in 178 DEG C to get foamed polyvinyl chloride sill is arrived.
Embodiment 4
A kind of foamed polyvinyl chloride sill, preparation method includes the following steps:
(1), it weighs 37 parts of PVA BP-05,19 parts of calcium sulphate dihydrates and 12 parts of cupric sulfate pentahydrates to be added in reaction kettle, stirring speed
Degree is 80r/min, reacts 45min under the conditions of 66 DEG C of maintenance system temperature, product is transferred in hydrothermal reaction kettle, maintains water
Thermal response temperature is 59 DEG C of reaction 30min, is cooled to room temperature, and crushes, obtains modified PVA；
(2), 67 parts of EVA, 18 parts of oxalic acid, 28 parts of urea, 17 parts of methyl methacrylates, 5 parts of Isooctyl acrylate monomers, 2.6 are weighed
Part methyl acrylate and 0.4 part of 819 photoinitiator are added in reaction kettle, mixing speed 83r/min, maintenance system temperature 32
24min is reacted under the conditions of DEG C, product crushes through 3000W lamp and high pressure mercury 9s, obtains modified EVA；
(3), 68 parts of polyvinyl chloride, 23 parts of amylopectin, 8.7 parts of glycerol, 7.8 portions of diethylene glycol (DEG)s and 5.8 parts of 15%(wt.% are weighed) urine
Plain aqueous solution is added in ball mill, drum speed 16r/min, and ball milling temperature is 35 DEG C of ball-milling reaction 35min to get to forming sediment
Powder modified polyvinyl chloride；
(4), 73 parts of polyvinyl chloride, 16 parts of methyl diphenylene diisocyanates and 0.7 part of dibutyl tin dilaurate is weighed to be added
Into high-speed mixer, with high-speed mixer in 158 DEG C of hybrid reaction 1.5min of temperature, squeezed out with extruder at 172 DEG C of temperature
It is granulated, crushes to get modified polyvinyl chloride is arrived；
(5), 82 parts of modified polyvinyl chlorides, 31 parts of starch conversion polyvinyl chloride, 57 parts of modified EVAs, 36 parts of modified PVAs are weighed to be added
Into vulcanizing press, formed in 178 DEG C to get foamed polyvinyl chloride sill is arrived.
Embodiment 5
A kind of foamed polyvinyl chloride sill, preparation method includes the following steps:
(1), 37 parts of PVA BP-05,19.8 parts of calcium sulphate dihydrates and 13 parts of cupric sulfate pentahydrates are weighed to be added in reaction kettle, are stirred
Speed is 80r/min, reacts 45min under the conditions of 68 DEG C of maintenance system temperature, product is transferred in hydrothermal reaction kettle, is maintained
Hydrothermal temperature is 60 DEG C of reaction 30min, is cooled to room temperature, and crushes, obtains modified PVA；
(2), 67 parts of EVA, 19 parts of oxalic acid, 29 parts of urea, 18 parts of methyl methacrylates, 7 parts of Isooctyl acrylate monomers, 3 parts are weighed
Methyl acrylate and 0.7 part of 819 photoinitiator are added in reaction kettle, mixing speed 83r/min, maintenance system temperature 32
25min is reacted under the conditions of DEG C, product crushes through 3000W lamp and high pressure mercury 10s, obtains modified EVA；
(3), 68 parts of polyvinyl chloride, 26 parts of amylopectin, 11 parts of glycerol, 9.7 portions of diethylene glycol (DEG)s and 8.8 parts of 15%(wt.% are weighed) urine
Plain aqueous solution is added in ball mill, drum speed 16r/min, and ball milling temperature is 35 DEG C of ball-milling reaction 35min to get to forming sediment
Powder modified polyvinyl chloride；
(4), 73 parts of polyvinyl chloride, 19 parts of methyl diphenylene diisocyanates and 0.9 part of dibutyl tin dilaurate is weighed to be added
Into high-speed mixer, with high-speed mixer in 159 DEG C of hybrid reaction 3min of temperature, made with extruder in 170 DEG C of extrusions of temperature
Grain crushes to get modified polyvinyl chloride is arrived；
(5), 82 parts of modified polyvinyl chlorides, 29.8 parts of starch conversion polyvinyl chloride, 59 parts of modified EVAs, 37 parts of modified PVAs are weighed to add
Enter into vulcanizing press, is formed in 178 DEG C to get foamed polyvinyl chloride sill is arrived.
Embodiment 6
A kind of foamed polyvinyl chloride sill, preparation method includes the following steps:
(1), it weighs 37 parts of PVA BP-05,25 parts of calcium sulphate dihydrates and 16 parts of cupric sulfate pentahydrates to be added in reaction kettle, stirring speed
Degree is 80r/min, reacts 45min under the conditions of 70 DEG C of maintenance system temperature, product is transferred in hydrothermal reaction kettle, maintains water
Thermal response temperature is 61 DEG C of reaction 30min, is cooled to room temperature, and crushes, obtains modified PVA；
(2), 67 parts of EVA, 23 parts of oxalic acid, 30 parts of urea, 19 parts of methyl methacrylates, 10 parts of Isooctyl acrylate monomers, 3 parts are weighed
Methyl acrylate and 0.5 part of 819 photoinitiator are added in reaction kettle, mixing speed 83r/min, maintenance system temperature 32
25min is reacted under the conditions of DEG C, product crushes through 3000W lamp and high pressure mercury 10s, obtains modified EVA；
(3), 68 parts of polyvinyl chloride, 25 parts of amylopectin, 10 parts of glycerol, 10 portions of diethylene glycol (DEG)s and 9 parts of 15%(wt.% are weighed) urea water
Solution is added in ball mill, drum speed 16r/min, and ball milling temperature is that 35 DEG C of ball-milling reaction 35min change to get to starch
Property polyvinyl chloride；
(4), 73 parts of polyvinyl chloride, 25 parts of methyl diphenylene diisocyanates and 1 part of dibutyl tin dilaurate is weighed to be added to
In high-speed mixer, with high-speed mixer in 166 DEG C of hybrid reaction 2min of temperature, with extruder in 173 DEG C of extruding pelletizations of temperature,
It crushes to get modified polyvinyl chloride is arrived；
(5), 82 parts of modified polyvinyl chlorides, 30 parts of starch conversion polyvinyl chloride, 60 parts of modified EVAs, 39 parts of modified PVAs are weighed to be added
Into vulcanizing press, formed in 178 DEG C to get foamed polyvinyl chloride sill is arrived.
Embodiment 7
A kind of foamed polyvinyl chloride sill, preparation method includes the following steps:
(1), it weighs 37 parts of PVA BP-05,26 parts of calcium sulphate dihydrates and 22 parts of cupric sulfate pentahydrates to be added in reaction kettle, stirring speed
Degree is 80r/min, reacts 45min under the conditions of 71 DEG C of maintenance system temperature, product is transferred in hydrothermal reaction kettle, maintains water
Thermal response temperature is 65 DEG C of reaction 30min, is cooled to room temperature, and crushes, obtains modified PVA；
(2), weigh 67 parts of EVA, 26 parts of oxalic acid, 33 parts of urea, 22.3 parts of methyl methacrylates, 13 parts of Isooctyl acrylate monomers,
4.5 parts of methyl acrylates and 0.9 part of 819 photoinitiator are added in reaction kettle, mixing speed 83r/min, maintenance system temperature
34min is reacted under the conditions of 32 DEG C of degree, product crushes through 3000W lamp and high pressure mercury 13s, obtains modified EVA；
(3), 68 parts of polyvinyl chloride, 28 parts of amylopectin, 12 parts of glycerol, 12 portions of diethylene glycol (DEG)s and 11 parts of 15%(wt.% are weighed) urea
Aqueous solution is added in ball mill, drum speed 16r/min, and ball milling temperature is 35 DEG C of ball-milling reaction 35min to get starch is arrived
Modified polyvinyl chloride；
(4), 73 parts of polyvinyl chloride, 26 parts of methyl diphenylene diisocyanates and 1.9 parts of dibutyl tin dilaurates are weighed to be added
Into high-speed mixer, with high-speed mixer in 167 DEG C of hybrid reaction 3.5min of temperature, squeezed out with extruder at 173 DEG C of temperature
It is granulated, crushes to get modified polyvinyl chloride is arrived；
(5), 82 parts of modified polyvinyl chlorides, 31 parts of starch conversion polyvinyl chloride, 63 parts of modified EVAs, 40 parts of modified PVAs are weighed to be added
Into vulcanizing press, formed in 178 DEG C to get foamed polyvinyl chloride sill is arrived.
Embodiment 8
A kind of foamed polyvinyl chloride sill, preparation method includes the following steps:
(1), 37 parts of PVA BP-05,25.6 parts of calcium sulphate dihydrates and 21.1 parts of cupric sulfate pentahydrates are weighed to be added in reaction kettle, are stirred
Mixing speed is 80r/min, reacts 45min under the conditions of 71 DEG C of maintenance system temperature, product is transferred in hydrothermal reaction kettle, is tieed up
Holding hydrothermal temperature is 63 DEG C of reaction 30min, is cooled to room temperature, and crushes, obtains modified PVA；
(2), weigh 67 parts of EVA, 26 parts of oxalic acid, 32 parts of urea, 20.9 parts of methyl methacrylates, 12 parts of Isooctyl acrylate monomers,
4.5 parts of methyl acrylates and 0.5 part of 819 photoinitiator are added in reaction kettle, mixing speed 83r/min, maintenance system temperature
34min is reacted under the conditions of 32 DEG C of degree, product crushes through 3000W lamp and high pressure mercury 11s, obtains modified EVA；
(3), 68 parts of polyvinyl chloride, 28 parts of amylopectin, 12 parts of glycerol, 10.8 portions of diethylene glycol (DEG)s and 11 parts of 15%(wt.% are weighed) urine
Plain aqueous solution is added in ball mill, drum speed 16r/min, and ball milling temperature is 35 DEG C of ball-milling reaction 35min to get to forming sediment
Powder modified polyvinyl chloride；
(4), 73 parts of polyvinyl chloride, 26 parts of methyl diphenylene diisocyanates and 1.5 parts of dibutyl tin dilaurates are weighed to be added
Into high-speed mixer, with high-speed mixer in 166 DEG C of hybrid reaction 3min of temperature, made with extruder in 173 DEG C of extrusions of temperature
Grain crushes to get modified polyvinyl chloride is arrived；
(5), 82 parts of modified polyvinyl chlorides, 32 parts of starch conversion polyvinyl chloride, 64 parts of modified EVAs, 38 parts of modified PVAs are weighed to be added
Into vulcanizing press, formed in 178 DEG C to get foamed polyvinyl chloride sill is arrived.
Reference examples 1
In this reference examples, modified PVA is not added, other components and preparation method are same as Example 1.
Reference examples 2
In this reference examples, modified EVA is not added, other components and preparation method are same as Example 1.
Reference examples 3
In this reference examples, starch conversion polyvinyl chloride is not added, and other components and preparation method are same as Example 1.
Reference examples 4
In this reference examples, modified polyvinyl chloride is not added, other components and preparation method are same as Example 1.
Reference examples 5
The modified PVA in common PVA alternate embodiment 1, other components and preparation method and reality are selected in this reference examples, in formula
It is identical to apply example 1.
Reference examples 6
The modified EVA in common EVA alternate embodiment 1, other components and preparation method and reality are selected in this reference examples, in formula
It is identical to apply example 1.
Reference examples 7
The starch conversion polyvinyl chloride in common polyvinyl chloride alternate embodiment 1, other components are selected in this reference examples, in formula
It is same as Example 1 with preparation method.
Reference examples 8
The modified polyvinyl chloride in common polyvinyl chloride alternate embodiment 1, other components and system are selected in this reference examples, in formula
Preparation Method is same as Example 1.
The performance parameter of foamed polyvinyl chloride sill made from 1 embodiment 1 of table and reference examples 1~8
| Embodiment 1 | Reference examples 1 | Reference examples 2 | Reference examples 3 | Reference examples 4 | Reference examples 5 | Reference examples 6 | Reference examples 7 | Reference examples 8 | |
| Expansion ratio/% | 334 | 302 | 267 | 218 | 186 | 289 | 235 | 193 | 161 |
| Density/g/cm3 | 0.36 | 0.40 | 0.45 | 0.55 | 0.65 | 0.42 | 0.51 | 0.62 | 0.75 |
The above is the preferred embodiment of the invention, it is noted that for those skilled in the art,
Under the premise of not departing from the inventive principle, several improvements and modifications can also be made, these improvements and modifications are also considered as the hair
Bright protection scope.
Claims (2)
1. a kind of preparation method of foamed polyvinyl chloride sill, it is characterised in that: including following raw material components: modified polyvinyl chloride
Alkene, starch conversion polyvinyl chloride, modified EVA, modified PVA, the modified polyvinyl chloride, starch conversion polyvinyl chloride, modification
EVA, modified PVA mass parts ratio be 82:29~33:56~65:35~41, wherein the modified polyvinyl chloride is by gathering
Vinyl chloride, methyl diphenylene diisocyanate and dibutyl tin dilaurate reaction are made, the polyvinyl chloride, diphenylmethyl
The mass parts ratio of alkane diisocyanate and dibutyl tin dilaurate is 73:15~27:0.5~2, and the starch conversion is poly-
Vinyl chloride is by polyvinyl chloride, amylopectin, glycerol, diethylene glycol (DEG) and 15%(wt.%) obtained, the described polychlorostyrene of aqueous solution of urea reaction
Ethylene, amylopectin, glycerol, diethylene glycol (DEG) and 15%(wt.%) aqueous solution of urea mass parts ratio be 68:21~29:8~14:7
~13:5~12, the modified EVA is by EVA, oxalic acid, urea, methyl methacrylate, Isooctyl acrylate monomer, acrylic acid first
Ester and the reaction of 819 photoinitiators are made, the EVA, oxalic acid, urea, methyl methacrylate, Isooctyl acrylate monomer, propylene
The mass parts ratio of sour methyl esters and 819 photoinitiators is 67:17~28:27~35:16~23:4~15:2~5:0.3~1, institute
The modified PVA stated is reacted by PVA BP-05, calcium sulphate dihydrate and cupric sulfate pentahydrate to be made, PVA BP-05, two water sulphur
The mass parts ratio of sour calcium and cupric sulfate pentahydrate is 37:18~27:11~23.
2. a kind of preparation method of foamed polyvinyl chloride sill according to claim 1, it is characterised in that: the foaming
Polyvinyl chloride sill is as made from following preparation method: (1), by PVA BP-05, calcium sulphate dihydrate and cupric sulfate pentahydrate pressing
It is that 37:18~27:11~23 are added in reaction kettle according to mass parts ratio, mixing speed 80r/min, maintenance system temperature 65
45min is reacted under the conditions of~73 DEG C, product is transferred in hydrothermal reaction kettle, maintaining hydrothermal temperature is 58~67 DEG C anti-
30min is answered, is cooled to room temperature, crushes, obtains modified PVA；(2), by EVA, oxalic acid, urea, methyl methacrylate, acrylic acid
Different monooctyl ester, methyl acrylate and 819 photoinitiators are 67:17~28:27~35:16~23:4~15:2 according to mass parts ratio
~5:0.3~1 is added in reaction kettle, mixing speed 83r/min, under the conditions of 32 DEG C of maintenance system temperature react 23~
36min, product crush through 3000W 8~14s of lamp and high pressure mercury, obtain modified EVA；(3), by polyvinyl chloride, amylopectin,
Glycerol, diethylene glycol (DEG) and 15%(wt.%) aqueous solution of urea according to mass parts ratio for 68:21~29:8~14:7~13:5~12 plus
Enter into ball mill, drum speed 16r/min, ball milling temperature is 35 DEG C of ball-milling reaction 35min to get starch conversion polychlorostyrene is arrived
Ethylene；(4), it is 73 according to mass parts ratio by polyvinyl chloride, methyl diphenylene diisocyanate and dibutyl tin dilaurate:
15~27:0.5~2 are added in high-speed mixer, with high-speed mixer in 157~168 DEG C of 1~4min of hybrid reaction of temperature,
With extruder in 169~175 DEG C of extruding pelletizations of temperature, crush to get modified polyvinyl chloride is arrived；(5), by modified polyvinyl chloride,
Starch conversion polyvinyl chloride, modified EVA, modified PVA are that 82:29~33:56~65:35~41 are added to according to mass parts ratio
In vulcanizing press, formed in 178 DEG C to get foamed polyvinyl chloride sill is arrived.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111619054A (en) * | 2020-06-03 | 2020-09-04 | 承德人和矿业有限责任公司 | Degradable agricultural film and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111619054A (en) * | 2020-06-03 | 2020-09-04 | 承德人和矿业有限责任公司 | Degradable agricultural film and preparation method thereof |
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