CN108948793A - A kind of method of modifying of calcium carbonate and its application in PVC pipe - Google Patents
A kind of method of modifying of calcium carbonate and its application in PVC pipe Download PDFInfo
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- CN108948793A CN108948793A CN201810508247.2A CN201810508247A CN108948793A CN 108948793 A CN108948793 A CN 108948793A CN 201810508247 A CN201810508247 A CN 201810508247A CN 108948793 A CN108948793 A CN 108948793A
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- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
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- C09C1/021—Calcium carbonates
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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- 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
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention discloses a kind of method of modifying of calcium carbonate and its in the application of PVC pipe, the calcium carbonate, which first passes through, first carries out surface modification with coconut oleoyl amine sulfosuccinic acid monoesters disodium and polyoxyethylene nonyl phenyl vinethene, then carries out secondary surface with eight aminophenyl cagelike silsesquioxanes and -4 sodium phosphate of laureth and be modified.The modified calcium carbonate that the present invention obtains has the characteristics that polymolecularity, high tenacity, weatherability, heat resistance, high intensity and high tenacity, filler as PVC pipe system, the performances such as tubing high intensity, high tenacity, corrosion-resistant, heat-resist, impact resistance be strong can be assigned, the service life of tubing and the application field of broadening tubing are extended.
Description
Technical field
The present invention relates to plastic pipe technical field, the method for modifying of specifically a kind of calcium carbonate and its in PVC pipe
Using.
Background technique
PVC tubing has the characteristics that corrosion resistance is strong, intensity is high, rigidity is good, therefore, be widely used in building water supply and drainage,
The construction industries such as town and country plumbing, gas, electric power and cable jacket, industrial fluids conveying, agricultural irrigation, municipal administration, industry and
Agriculture field is the plastic pipe that a kind of scope of application is only second to polyethylene.But due to polyvinyl chloride resin itself there are poor heat resistance,
Impact resistance difference problem, so as to cause accordingly there is also poor heat resistances with the plastic pipe of polyvinyl chloride resin preparation, in illumination item
It is easy to aging under part, deformation, it is brittle the problems such as, shorten the service life of tubing.
Important filler one of of the calcium carbonate as PVC pipe, but the atom since calcium carbonate particle partial size is smaller, on surface
Number is more, then surface can be higher, and suction-operated is stronger, mutually reunites between each particle；Followed by calcium carbonate is as a kind of inorganic
Filler, particle surface is hydrophilic and oleophobic, with the compatibility of polyvinyl chloride resin it is poor, easily formed aggregation, cause high polymer internal flaw, power
Learn degradation.In order to improve the filling capacity of calcium carbonate, it is necessary to using effective technique and surface modifying method to its carbonic acid
It is modified that calcium carries out surface.At present in calcium carbonate modified method, the surface treating agent mainly selected be usually fatty acid or its
Salt, although the dispersibility and processing fluidity of system make moderate progress, since polyvinyl chloride resin is difficult effectively to tie with pearl filler
It closes, causes the interfacial adhesion of matrix and filler poor, to cause the mechanical strength of PVC pipe not high.
The disclosure of background above technology contents is only used for auxiliary and understands inventive concept and technical solution of the invention, not
The prior art for necessarily belonging to present patent application shows above content in the applying date of present patent application in no tangible proof
In the case where having disclosed, above-mentioned background technique should not be taken to the novelty and creativeness of evaluation the application.
Summary of the invention
It is an object of that present invention to provide the calcium carbonate of a kind of polymolecularity, high tenacity, weatherability, excellent mechanical performance to change
Property method.Filler of the modified calcium carbonate that this method obtains as PVC pipe system, can assign tubing high intensity, high tenacity,
The performances such as corrosion-resistant, heat-resist, the strong, good flame resistance of impact resistance extend the service life of tubing and the application of broadening tubing
Field.
The first object of the present invention is to provide the modified calcium carbonate applied to PVC pipe, the modified calcium carbonate process
Following modification procedure:
(1) marble addition crusher is crushed, is crushed to partial size >=20 mesh, obtains calcium carbonate coarse powder；
(2) grinder is added in calcium carbonate coarse powder, adds coconut oleoyl amine sulfosuccinic acid monoesters disodium and polyoxyethylene nonyl phenyl
The surface treating agent of vinethene composition, the additional amount of the surface treating agent are the 2-4% of marble weight, and grinding, obtaining partial size is
The calcium carbonate fine powder of 200-400 mesh；
(3) blender is added in calcium carbonate fine powder, adds -4 phosphorus of eight aminophenyl cagelike silsesquioxanes and laureth
Twice-modified dose of addition blender of acid esters sodium composition, twice-modified dose of additional amount are the 1.5-2.5% of marble weight, high
Speed is uniformly mixed, and obtains modified calcium carbonate；
(4) modified calcium carbonate is dry, it is ground to 600-1000 mesh, is sieved, obtains the modified calcium carbonate of PVC pipe.
Further, coconut oleoyl amine sulfosuccinic acid monoesters disodium and polyoxyethylene nonyl phenyl ethylene in the surface treating agent
The weight ratio of ether is 1:2-4.
Further, -4 phosphoric acid of eight aminophenyl cagelike silsesquioxanes and laureth in described twice-modified dose
The weight ratio of ester sodium is 1-3:1.
The present invention second is designed to provide the modified calcium carbonate in the application of PVC pipe, the PVC pipe include with
The raw material of lower parts by weight is made:
100 parts of polyvinyl chloride resin, 10-20 parts of polyurethane rubber, aniline -3-5 parts of sulfo aniline copolymer, polyether-modified poly- diformazan
2-5 parts of radical siloxane, 15-30 parts of modified calcium carbonate, 3-5 parts of chitosan, 2-4 parts of aramid fiber, 3-5 parts of coupling agent, lubricant
1-3 parts, 0.5-2 parts of crosslinking agent, 0.5-1.5 parts of antioxidant, 0.5-1.5 parts of stabilizer and 1-4 parts of processing aid.
Further, the coupling agent is silane coupling agent, in aluminium methacrylate-zirconium coupling agent and rare-earth coupling agent
One or more combinations.
Further, the lubricant is ethylene bis stearamide and ethylene acrylic acid co polymer.
Further, the crosslinking agent is that triallyl isocyanurate and maleic rosin acrylic acid glycol ester form.
Further, the stabilizer is hexamethyl cyclotrisilazane and calcium zinc stabilizer.
Further, the antioxidant is 1010 antioxidants, 1076 antioxidants or CA antioxidant.
Further, the processing aid is propylene alcohol radical polyoxyethylene ether and laruyl alcohol mono succinate sodium sulfonate.
The third object of the present invention is to provide the preparation method of the PVC pipe, include the following steps:
S1: weighing above-mentioned each raw material according to above-mentioned formula, by polyvinyl chloride resin, polyurethane rubber, aniline-sulfo aniline copolymer,
Blender is added in polyether-modified dimethyl silicone polymer, stirs 20-30min, obtains modified material；
S2: high-speed mixer is added in the modified material of paddle, is warming up to 120-140 DEG C, adds modified calcium carbonate, chitosan, virtue
After synthetic fibre fiber is uniformly mixed, it is eventually adding coupling agent, lubricant, crosslinking agent, antioxidant, stabilizer and processing aid,
Stirring 10-20min is sufficiently mixed uniformly, obtains mixture；
S3: being delivered to double screw extruder for mixture, temperature be 160-180 DEG C at extrusion forming, cooling and shaping to get
PVC pipe.
Compared with prior art, it advantages of the present invention and has the beneficial effect that
1, calcium carbonate used in PVC pipe of the present invention first uses coconut oleoyl amine sulfosuccinic acid monoesters disodium and polyoxyethylene nonyl phenyl second
Alkene ether carries out surface and is modified, due to the Long carbon chain rouge of coconut oleoyl amine sulfosuccinic acid monoesters disodium and polyoxyethylene nonyl phenyl vinethene
The compatibility, dispersibility and processing of calcium carbonate not only can be improved in the groups such as fat acid, hydroxyl, carboxyl, carbonyl, sulfonic group, amide
Mobility, each group and PVC board System forming network structure improve PVC board reaction system interfacial adhesion, so that carbonic acid
It is tough that calcium achievees the effect that enhancing is mended.
2, calcium carbonate used in the present invention is modified by surface, also with eight aminophenyl cagelike silsesquioxanes and the moon
It is modified that -4 sodium phosphate of laureth carries out secondary surface.Since eight aminophenyl cagelike silsesquioxanes are that inorganic-organic is miscellaneous
Change structure, introduces silicon oxygen bond, phenyl and amino on calcium carbonate particle surface, the notch shock of the PVC pipe of plate can be improved
Intensity, tensile break strength, heat resistance and anti-aging property；It is equipped with -4 sodium phosphate of laureth again, due to the association of P-N
Same-action makes the flame retardant effect of PVC more significant.
3, the present invention using unique composition of raw materials and each component coordinative role, the PVC pipe of preparation have it is high-intensitive,
High tenacity, shock resistance be strong, it is wear-resisting, heat-resisting, be unlikely to deform, the advantages that stability is good, ageing-resistant, anti-flammability, process work
Skill is simple, cost is more cheap, wide market.
4, polyvinyl chloride resin of the present invention be equipped with polyurethane rubber use, then use, aniline-sulfo aniline copolymer and polyethers change
Property polydimethylsiloxanes be modified, improve PVC pipe system toughness, impact resistance, heat resistance and inoxidizability, effectively
The defects of overcoming polyvinyl chloride resin itself brittle, thermo-labile.
5, inventive formulation is additionally added chitosan, aramid fiber, does not only reach enhancing and mends tough effect, moreover it is possible to improve tubing
Wear-resistant, high temperature resistant, anti-aging property.
6, crosslinking agent used in the present invention not only makes entire reaction system form network structure, improves the intensity of tubing
And toughness, moreover it is possible to improve the heat resistance and antioxidant of tubing.
7, plasticizer and processing aid used in the present invention can not only improve the dispersibility of entire reaction system and add
Work performance improves the finish of product, moreover it is possible to improve the heat resistance and wearability of product.
Specific embodiment
Invention is further described in detail With reference to embodiment.It is emphasized that following the description is only
It is merely exemplary, the range and its application being not intended to be limiting of the invention.
Embodiment 1
A kind of modified calcium carbonate applied to PVC pipe, the modified calcium carbonate pass through following modification procedure:
(1) marble addition crusher is crushed, is crushed to partial size >=20 mesh, obtains calcium carbonate coarse powder；
(2) by calcium carbonate coarse powder be added grinder, add weight ratio be 1:3 coconut oleoyl amine sulfosuccinic acid monoesters disodium and
The surface treating agent of polyoxyethylene nonyl phenyl vinethene composition, the additional amount of the surface treating agent are the 2% of marble weight, are ground
Mill obtains the calcium carbonate fine powder that partial size is 200 mesh；
(3) blender is added in calcium carbonate fine powder, adds eight aminophenyl cagelike silsesquioxanes and the moon that weight ratio is 2:1
Twice-modified dose of addition blender of -4 sodium phosphate of laureth composition, twice-modified dose of additional amount are marble weight
2.1%, high-speed stirred be uniformly mixed, obtain modified calcium carbonate；
(4) modified calcium carbonate is dry, 800 mesh are ground to, is sieved, obtains the modified calcium carbonate of PVC pipe.
Application of the modified calcium carbonate in PVC pipe: the PVC pipe includes that the raw material of following parts by weight is made:
100 parts of polyvinyl chloride resin, 15 parts of polyurethane rubber, aniline -5 parts of sulfo aniline copolymer, polyether-modified dimethyl silicone polymer 3
Part, 20 parts of modified calcium carbonate, 4 parts of chitosan, 3 parts of aramid fiber, 4 parts of silane coupling agent, 2 parts of lubricant, 1.5 parts of crosslinking agent,
1010 1 part of antioxidants, 0.8 part of stabilizer and 3 parts of processing aid.
The ethylene bis stearamide and ethylene acrylic acid co polymer that the lubricant is 1:3 by weight ratio.The crosslinking agent
The triallyl isocyanurate and maleic rosin acrylic acid glycol ester for being 1:1 for weight ratio.The stabilizer is weight ratio
For the hexamethyl cyclotrisilazane and calcium zinc stabilizer of 1:3.The propylene alcohol radical polyoxy second that the processing aid is 1:3 by weight ratio
Alkene ether and laruyl alcohol mono succinate sodium sulfonate.
The preparation method of the PVC pipe, includes the following steps:
S1: weighing above-mentioned each raw material according to above-mentioned formula, by polyvinyl chloride resin, polyurethane rubber, aniline-sulfo aniline copolymer,
Blender is added in polyether-modified dimethyl silicone polymer, stirs 30min, obtains modified material；
S2: high-speed mixer is added in the modified material of paddle, is warming up to 120 DEG C, it is fine to add modified calcium carbonate, chitosan, aramid fiber
After dimension is uniformly mixed, it is eventually adding coupling agent, lubricant, crosslinking agent, antioxidant, stabilizer and processing aid, is stirred
15min is sufficiently mixed uniformly, obtains mixture；
S3: being delivered to double screw extruder for mixture, temperature be 160-180 DEG C at extrusion forming, cooling and shaping to get
PVC pipe.
Embodiment 2
A kind of modified calcium carbonate applied to PVC pipe, the modified calcium carbonate pass through following modification procedure:
(1) marble addition crusher is crushed, is crushed to partial size >=20 mesh, obtains calcium carbonate coarse powder；
(2) by calcium carbonate coarse powder be added grinder, add weight ratio be 1:4 coconut oleoyl amine sulfosuccinic acid monoesters disodium and
The surface treating agent of polyoxyethylene nonyl phenyl vinethene composition, the additional amount of the surface treating agent are the 3% of marble weight, are ground
Mill obtains the calcium carbonate fine powder that partial size is 250 mesh；
(3) blender is added in calcium carbonate fine powder, adds eight aminophenyl cagelike silsesquioxanes and the moon that weight ratio is 3:1
Twice-modified dose of addition blender of -4 sodium phosphate of laureth composition, twice-modified dose of additional amount are marble weight
1.5%, high-speed stirred be uniformly mixed, obtain modified calcium carbonate；
(4) modified calcium carbonate is dry, 600 mesh are ground to, is sieved, obtains the modified calcium carbonate of PVC pipe.
Application of the modified calcium carbonate in PVC pipe: the PVC pipe includes that the raw material of following parts by weight is made:
100 parts of polyvinyl chloride resin, 10 parts of polyurethane rubber, aniline -4 parts of sulfo aniline copolymer, polyether-modified dimethyl silicone polymer 4
Part, 15 parts of modified calcium carbonate, 3 parts of chitosan, 4 parts of aramid fiber, 3 parts of silane coupling agent, 1.5 parts of lubricant, 2 parts of crosslinking agent,
1076 0.5 part of antioxidants, 1 part of stabilizer and 4 parts of processing aid.
The ethylene bis stearamide and ethylene acrylic acid co polymer that the lubricant is 1:2 by weight ratio.The crosslinking agent
The triallyl isocyanurate and maleic rosin acrylic acid glycol ester for being 1:1 for weight ratio.The stabilizer is weight ratio
For the hexamethyl cyclotrisilazane and calcium zinc stabilizer of 1:1.The propylene alcohol radical polyoxy second that the processing aid is 1:3 by weight ratio
Alkene ether and laruyl alcohol mono succinate sodium sulfonate.
The preparation method of the PVC pipe, includes the following steps:
S1: weighing above-mentioned each raw material according to above-mentioned formula, by polyvinyl chloride resin, polyurethane rubber, aniline-sulfo aniline copolymer,
Blender is added in polyether-modified dimethyl silicone polymer, stirs 20min, obtains modified material；
S2: high-speed mixer is added in the modified material of paddle, is warming up to 130 DEG C, it is fine to add modified calcium carbonate, chitosan, aramid fiber
After dimension is uniformly mixed, it is eventually adding coupling agent, lubricant, crosslinking agent, antioxidant, stabilizer and processing aid, is stirred
20min is sufficiently mixed uniformly, obtains mixture；
S3: being delivered to double screw extruder for mixture, temperature be 160-180 DEG C at extrusion forming, cooling and shaping to get
PVC pipe.
Embodiment 3
A kind of modified calcium carbonate applied to PVC pipe, the modified calcium carbonate pass through following modification procedure:
(1) marble addition crusher is crushed, is crushed to partial size >=20 mesh, obtains calcium carbonate coarse powder；
(2) by calcium carbonate coarse powder be added grinder, add weight ratio be 1:3 coconut oleoyl amine sulfosuccinic acid monoesters disodium and
The surface treating agent of polyoxyethylene nonyl phenyl vinethene composition, the additional amount of the surface treating agent are the 4% of marble weight, are ground
Mill obtains the calcium carbonate fine powder that partial size is 300 mesh；
(3) blender is added in calcium carbonate fine powder, adds eight aminophenyl cagelike silsesquioxanes and the moon that weight ratio is 2:1
Twice-modified dose of addition blender of -4 sodium phosphate of laureth composition, twice-modified dose of additional amount are marble weight
2%, high-speed stirred be uniformly mixed, obtain modified calcium carbonate；
(4) modified calcium carbonate is dry, 1000 mesh are ground to, is sieved, obtains the modified calcium carbonate of PVC pipe.
Application of the modified calcium carbonate in PVC pipe: the PVC pipe includes that the raw material of following parts by weight is made:
100 parts of polyvinyl chloride resin, 18 parts of polyurethane rubber, aniline -5 parts of sulfo aniline copolymer, polyether-modified dimethyl silicone polymer 3
Part, 25 parts of modified calcium carbonate, 4 parts of chitosan, 2 parts of aramid fiber, 4 parts of aluminium methacrylate-zirconium coupling agent, 2.5 parts of lubricant,
1 part of crosslinking agent, 1 part of CA antioxidant, 1.2 parts of stabilizer and 5 parts of processing aid.
The ethylene bis stearamide and ethylene acrylic acid co polymer that the lubricant is 1:1.5 by weight ratio.The crosslinking
Agent is the triallyl isocyanurate that weight ratio is 1:3 and maleic rosin acrylic acid glycol ester.The stabilizer is weight
Than the hexamethyl cyclotrisilazane and calcium zinc stabilizer for 2:1.The propylene alcohol radical polyoxy that the processing aid is 2:1 by weight ratio
Vinethene and laruyl alcohol mono succinate sodium sulfonate.
The preparation method of the PVC pipe, includes the following steps:
S1: weighing above-mentioned each raw material according to above-mentioned formula, by polyvinyl chloride resin, polyurethane rubber, aniline-sulfo aniline copolymer,
Blender is added in polyether-modified dimethyl silicone polymer, stirs 30min, obtains modified material；
S2: high-speed mixer is added in the modified material of paddle, is warming up to 140 DEG C, it is fine to add modified calcium carbonate, chitosan, aramid fiber
After dimension is uniformly mixed, it is eventually adding coupling agent, lubricant, crosslinking agent, antioxidant, stabilizer and processing aid, is stirred
10min is sufficiently mixed uniformly, obtains mixture；
S3: being delivered to double screw extruder for mixture, temperature be 160-180 DEG C at extrusion forming, cooling and shaping to get
PVC pipe.
Embodiment 4
A kind of modified calcium carbonate applied to PVC pipe, the modified calcium carbonate pass through following modification procedure:
(1) marble addition crusher is crushed, is crushed to partial size >=20 mesh, obtains calcium carbonate coarse powder；
(2) by calcium carbonate coarse powder be added grinder, add weight ratio be 1:4 coconut oleoyl amine sulfosuccinic acid monoesters disodium and
The surface treating agent of polyoxyethylene nonyl phenyl vinethene composition, the additional amount of the surface treating agent are the 2.5% of marble weight,
Grinding obtains the calcium carbonate fine powder that partial size is 400 mesh；
(3) blender is added in calcium carbonate fine powder, adds eight aminophenyl cagelike silsesquioxanes and the moon that weight ratio is 1:1
Twice-modified dose of addition blender of -4 sodium phosphate of laureth composition, twice-modified dose of additional amount are marble weight
2.5%, high-speed stirred be uniformly mixed, obtain modified calcium carbonate；
(4) modified calcium carbonate is dry, 1000 mesh are ground to, is sieved, obtains the modified calcium carbonate of PVC pipe.
Application of the modified calcium carbonate in PVC pipe: the PVC pipe includes that the raw material of following parts by weight is made:
100 parts of polyvinyl chloride resin, 13 parts of polyurethane rubber, aniline -3 parts of sulfo aniline copolymer, polyether-modified dimethyl silicone polymer 4
Part, 30 parts of modified calcium carbonate, 5 parts of chitosan, 3 parts of aramid fiber, 5 parts of rare-earth coupling agent, 3 parts of lubricant, 1.5 parts of crosslinking agent,
1010 1.5 parts of antioxidants, 1.5 parts of stabilizer and 3 parts of processing aid.
The ethylene bis stearamide and ethylene acrylic acid co polymer that the lubricant is 1:2 by weight ratio.The crosslinking agent
The triallyl isocyanurate and maleic rosin acrylic acid glycol ester for being 1:2 for weight ratio.The stabilizer is weight ratio
For the hexamethyl cyclotrisilazane and calcium zinc stabilizer of 1:1.The propylene alcohol radical polyoxy second that the processing aid is 1:2 by weight ratio
Alkene ether and laruyl alcohol mono succinate sodium sulfonate.
The preparation method of the PVC pipe, includes the following steps:
S1: weighing above-mentioned each raw material according to above-mentioned formula, by polyvinyl chloride resin, polyurethane rubber, aniline-sulfo aniline copolymer,
Blender is added in polyether-modified dimethyl silicone polymer, stirs 25min, obtains modified material；
S2: high-speed mixer is added in the modified material of paddle, is warming up to 130 DEG C, it is fine to add modified calcium carbonate, chitosan, aramid fiber
After dimension is uniformly mixed, it is eventually adding coupling agent, lubricant, crosslinking agent, antioxidant, stabilizer and processing aid, is stirred
20min is sufficiently mixed uniformly, obtains mixture；
S3: being delivered to double screw extruder for mixture, temperature be 160-180 DEG C at extrusion forming, cooling and shaping to get
PVC pipe.
Embodiment 5
A kind of modified calcium carbonate applied to PVC pipe, the modified calcium carbonate pass through following modification procedure:
(1) marble addition crusher is crushed, is crushed to partial size >=20 mesh, obtains calcium carbonate coarse powder；
(2) by calcium carbonate coarse powder be added grinder, add weight ratio be 1:2 coconut oleoyl amine sulfosuccinic acid monoesters disodium and
The surface treating agent of polyoxyethylene nonyl phenyl vinethene composition, the additional amount of the surface treating agent are the 3% of marble weight, are ground
Mill obtains the calcium carbonate fine powder that partial size is 250 mesh；
(3) blender is added in calcium carbonate fine powder, adds eight aminophenyl cagelike silsesquioxanes and the moon that weight ratio is 2:1
Twice-modified dose of addition blender of -4 sodium phosphate of laureth composition, twice-modified dose of additional amount are marble weight
1.8%, high-speed stirred be uniformly mixed, obtain modified calcium carbonate；
(4) modified calcium carbonate is dry, 800 mesh are ground to, is sieved, obtains the modified calcium carbonate of PVC pipe.
Application of the modified calcium carbonate in PVC pipe: the PVC pipe includes that the raw material of following parts by weight is made:
100 parts of polyvinyl chloride resin, 16 parts of polyurethane rubber, aniline -4 parts of sulfo aniline copolymer, polyether-modified dimethyl silicone polymer 3
Part, 20 parts of modified calcium carbonate, 4 parts of chitosan, 4 parts of aramid fiber, 5 parts of silane coupling agent, 1 part of lubricant, 2 parts of crosslinking agent, CA
0.5 part of antioxidant, 1 part of stabilizer and 4 parts of processing aid.
The ethylene bis stearamide and ethylene acrylic acid co polymer that the lubricant is 1:3 by weight ratio.The crosslinking agent
The triallyl isocyanurate and maleic rosin acrylic acid glycol ester for being 2:1 for weight ratio.The stabilizer is weight ratio
For the hexamethyl cyclotrisilazane and calcium zinc stabilizer of 1:1.The propylene alcohol radical polyoxy second that the processing aid is 1:3 by weight ratio
Alkene ether and laruyl alcohol mono succinate sodium sulfonate.
The preparation method of the PVC pipe, includes the following steps:
S1: weighing above-mentioned each raw material according to above-mentioned formula, by polyvinyl chloride resin, polyurethane rubber, aniline-sulfo aniline copolymer,
Blender is added in polyether-modified dimethyl silicone polymer, stirs 30min, obtains modified material；
S2: high-speed mixer is added in the modified material of paddle, is warming up to 120 DEG C, it is fine to add modified calcium carbonate, chitosan, aramid fiber
After dimension is uniformly mixed, it is eventually adding coupling agent, lubricant, crosslinking agent, antioxidant, stabilizer and processing aid, is stirred
15min is sufficiently mixed uniformly, obtains mixture；
S3: being delivered to double screw extruder for mixture, temperature be 160-180 DEG C at extrusion forming, cooling and shaping to get
PVC pipe.
Comparative example
The present embodiment and embodiment 5 the difference is that: calcium carbonate used in the present embodiment PVC pipe is directly by marble
800 mesh are ground to, without any modification.
Embodiment 1-5 and the comparative example PVC pipe prepared are conventionally measured into the tensile strength of sample, bending by force
Degree, simply supported beam notch impact strength, elongation at break %, softening temperature and oxygen index (OI), test result are as shown in table 1.
Table 1: the performance test results of PVC pipe of the present invention
| Product | Tensile strength (MPa) | Bending strength (MPa) | Simply supported beam notch impact strength (KJ/m2) | Elongation at break (%) | Vicat softening temperature (DEG C) | Oxygen index (OI) (%) |
| Embodiment 1 | 51.6 | 42.6 | 20.3 | 169.5 | 126.3 | 44.9 |
| Embodiment 2 | 54.8 | 43.9 | 22.6 | 172.6 | 117.6 | 46.2 |
| Embodiment 3 | 49.6 | 41.8 | 19.4 | 159.4 | 121.7 | 41.3 |
| Embodiment 4 | 53.1 | 49.7 | 21.6 | 167.2 | 123.9 | 43.2 |
| Embodiment 5 | 50.9 | 44.8 | 23.9 | 163.4 | 124.2 | 45.9 |
| Comparative example | 45.7 | 36.2 | 16.7 | 148.7 | 103.7 | 40.9 |
It is learnt from upper table, PVC pipe prepared by the present invention has that high intensity, high tenacity, shock resistance is strong, heat-resisting, anti-flammability
The advantages that good, wide market.
The above content is combine it is specific/further detailed description of the invention for preferred embodiment, cannot
Assert that specific implementation of the invention is only limited to these instructions.General technical staff of the technical field of the invention is come
It says, without departing from the inventive concept of the premise, some replacements or modifications can also be made to the embodiment that these have been described,
And these substitutions or variant are regarded as belonging to the scope of protection of the present invention.
Claims (10)
1. a kind of modified calcium carbonate applied to PVC pipe, it is characterised in that: the modified calcium carbonate is by following modified step
It is rapid:
(1) marble addition crusher is crushed, is crushed to partial size >=20 mesh, obtains calcium carbonate coarse powder；
(2) grinder is added in calcium carbonate coarse powder, adds coconut oleoyl amine sulfosuccinic acid monoesters disodium and polyoxyethylene nonyl phenyl
The surface treating agent of vinethene composition, the additional amount of the surface treating agent are the 2-4% of marble weight, and grinding, obtaining partial size is
The calcium carbonate fine powder of 200-400 mesh；
(3) blender is added in calcium carbonate fine powder, adds -4 phosphorus of eight aminophenyl cagelike silsesquioxanes and laureth
Twice-modified dose of addition blender of acid esters sodium composition, twice-modified dose of additional amount are the 1.5-2.5% of marble weight, high
Speed is uniformly mixed, and obtains modified calcium carbonate；
(4) modified calcium carbonate is dry, it is ground to 600-1000 mesh, is sieved, obtains the modified calcium carbonate of PVC pipe.
2. being applied to the modified calcium carbonate of PVC pipe according to claim 1, it is characterised in that: in the surface treating agent
The weight ratio of coconut oleoyl amine sulfosuccinic acid monoesters disodium and polyoxyethylene nonyl phenyl vinethene is 1:2-4.
3. being applied to the modified calcium carbonate of PVC pipe according to claim 1, it is characterised in that: in described twice-modified dose
The weight ratio of -4 sodium phosphate of eight aminophenyl cagelike silsesquioxanes and laureth is 1-3:1.
4. modified calcium carbonate as described in claim 1 is in the application of PVC pipe, it is characterised in that: the PVC pipe includes following
The raw material of parts by weight is made:
100 parts of polyvinyl chloride resin, 10-20 parts of polyurethane rubber, aniline -3-5 parts of sulfo aniline copolymer, polyether-modified poly- diformazan
2-5 parts of radical siloxane, 15-30 parts of modified calcium carbonate, 3-5 parts of chitosan, 2-4 parts of aramid fiber, 3-5 parts of coupling agent, lubricant
1-3 parts, 0.5-2 parts of crosslinking agent, 0.5-1.5 parts of antioxidant, 0.5-1.5 parts of stabilizer and 1-4 parts of processing aid.
5. application of the modified calcium carbonate in PVC pipe according to claim 4, it is characterised in that: the lubricant is ethylene
Bis-stearamides and ethylene acrylic acid co polymer.
6. application of the modified calcium carbonate in PVC pipe according to claim 4, it is characterised in that: the crosslinking agent is triolefin
Propyl chlorinated isocyanurates and maleic rosin acrylic acid glycol ester composition.
7. according to claim 4 modified calcium carbonate PVC pipe application, it is characterised in that: the stabilizer be pregnancy
Base cyclotrisilazane and calcium zinc stabilizer.
8. application of the modified calcium carbonate in PVC pipe according to claim 4, it is characterised in that: the antioxidant is
1010 antioxidants, 1076 antioxidants or CA antioxidant.
9. application of the modified calcium carbonate in PVC pipe according to claim 4, it is characterised in that: the processing aid is third
Enol base polyoxyethylene ether and laruyl alcohol mono succinate sodium sulfonate.
10. the preparation method of PVC pipe as described in claim any one of 4-9, which comprises the steps of:
S1: weighing above-mentioned each raw material according to above-mentioned formula, by polyvinyl chloride resin, polyurethane rubber, aniline-sulfo aniline copolymer,
Blender is added in polyether-modified dimethyl silicone polymer, stirs 20-30min, obtains modified material；
S2: high-speed mixer is added in the modified material of paddle, is warming up to 120-140 DEG C, adds modified calcium carbonate, chitosan, virtue
After synthetic fibre fiber is uniformly mixed, it is eventually adding coupling agent, lubricant, crosslinking agent, antioxidant, stabilizer and processing aid,
Stirring 10-20min is sufficiently mixed uniformly, obtains mixture；
S3: being delivered to double screw extruder for mixture, temperature be 160-180 DEG C at extrusion forming, cooling and shaping to get
PVC pipe.
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| CN110819043A (en) * | 2019-12-13 | 2020-02-21 | 邓权塑业科技（湖南）有限公司 | Processing method of high-toughness PVC (polyvinyl chloride) pipe |
| CN110845871A (en) * | 2019-12-05 | 2020-02-28 | 中国矿业大学(北京) | Heavy calcium carbonate modifier and modification method thereof |
| CN111533874A (en) * | 2020-04-30 | 2020-08-14 | 上海抚佳精细化工有限公司 | Polyurethane high-resilience foam and preparation method thereof |
| CN111574851A (en) * | 2020-04-30 | 2020-08-25 | 广西夏阳环保科技有限公司 | Method for preparing calcite powder for papermaking |
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| CN110845871A (en) * | 2019-12-05 | 2020-02-28 | 中国矿业大学(北京) | Heavy calcium carbonate modifier and modification method thereof |
| CN110845871B (en) * | 2019-12-05 | 2020-12-11 | 中国矿业大学(北京) | Heavy calcium carbonate modifier and modification method thereof |
| CN110819043A (en) * | 2019-12-13 | 2020-02-21 | 邓权塑业科技（湖南）有限公司 | Processing method of high-toughness PVC (polyvinyl chloride) pipe |
| CN111533874A (en) * | 2020-04-30 | 2020-08-14 | 上海抚佳精细化工有限公司 | Polyurethane high-resilience foam and preparation method thereof |
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Application publication date: 20181207 |