CN110791038A - Cold-resistant and bending-resistant plastic particle for pipe and preparation method thereof - Google Patents
Cold-resistant and bending-resistant plastic particle for pipe and preparation method thereof Download PDFInfo
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- CN110791038A CN110791038A CN201911028060.3A CN201911028060A CN110791038A CN 110791038 A CN110791038 A CN 110791038A CN 201911028060 A CN201911028060 A CN 201911028060A CN 110791038 A CN110791038 A CN 110791038A
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- 229920003023 plastic Polymers 0.000 title claims abstract description 50
- 239000004033 plastic Substances 0.000 title claims abstract description 50
- 239000002245 particle Substances 0.000 title claims abstract description 44
- 238000005452 bending Methods 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 60
- 239000004014 plasticizer Substances 0.000 claims abstract description 38
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 32
- 235000012424 soybean oil Nutrition 0.000 claims abstract description 29
- 239000003549 soybean oil Substances 0.000 claims abstract description 29
- 239000003381 stabilizer Substances 0.000 claims abstract description 23
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 238000004321 preservation Methods 0.000 claims abstract description 13
- 238000010008 shearing Methods 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 4
- 229920000728 polyester Polymers 0.000 claims description 13
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical group [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims description 12
- 239000006084 composite stabilizer Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 9
- 239000004605 External Lubricant Substances 0.000 claims description 8
- 239000004610 Internal Lubricant Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 22
- 239000004800 polyvinyl chloride Substances 0.000 description 22
- 239000011812 mixed powder Substances 0.000 description 11
- -1 polypropylene Polymers 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 5
- 238000013508 migration Methods 0.000 description 5
- 230000005012 migration Effects 0.000 description 5
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 4
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 4
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 4
- 239000005642 Oleic acid Substances 0.000 description 4
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000012748 slip agent Substances 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 235000019198 oils Nutrition 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical group ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 240000008790 Musa x paradisiaca Species 0.000 description 1
- 235000018290 Musa x paradisiaca Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920001002 functional polymer Polymers 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a cold-resistant and bending-resistant plastic particle for a pipe and a preparation method thereof, wherein the cold-resistant and bending-resistant plastic particle comprises 80 parts of PVC, 60 parts of plasticizer, 4 parts of epoxidized soybean oil, 15 parts of TPU, 2 parts of stabilizer and 0.8 part of processing aid, PVC powder is mixed to more than 60 parts when the cold-resistant and bending-resistant plastic particle for the pipe is prepared, the plasticizer is added, the epoxidized soybean oil and the stabilizer are added when the material temperature reaches 80 ℃, the processing aid is added when the temperature rises to about 95 ℃, the TPU is added when the temperature rises to about 105 ℃, the material is discharged and cooled when the temperature rises to about 115 ℃ and about 120 ℃, the material is fed to a BOSS extruder for plasticizing through a feeding device, the material is subjected to powerful shearing and plasticizing through a plasticizing high-speed screw, is uniformly mixed, is subjected to single-screw heat preservation and filtration, and is cooled and molded through a grain cutting die head.
Description
Technical Field
The invention relates to the technical field of pipe piles, in particular to cold-resistant and bending-resistant plastic particles for pipes and a preparation method thereof.
Background
The plastic particles refer to granular plastics, and are generally divided into more than 200 types and are subdivided into thousands of types.
Common plastic particles include general plastics, engineering plastics and special plastics.
General purpose plastics: polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyester, polyurethane, and the like.
Engineering plastics: nylon, polytetrafluoro, polyformaldehyde, polycarbon organosilicon, etc.
Special plastics: thermosetting plastics, functional polymer plastics, such as artificial kidney.
Types of plastic particles:
introduction of PP recycled plastics: polypropylene (PP) - -, when uncolored, is translucent and waxy, is lighter than polyethylene, has better transparency than polyethylene, and is more rigid than polyethylene, and is mainly used for pots, barrels, furniture, films, woven bags, packing belts, bottle caps, automobile bumpers and the like.
Introduction of PE recycled Plastic: polyethylene (PE) -is milk white, semitransparent and wax-like when not colored, feels greasy to the touch, is soft, tough and slightly stretchable, is soft in low-density polyethylene and good in transparency, and is hard in high-density polyethylene, and is mainly used for mulching films, hand bags, water pipes and oil drums
PS is polystyrene plastic, is easy to color and has good transparency, and is mainly used for manufacturing lamp shades, toothbrush handles, toys and electrical appliance parts. It is acid and alkali resistant, but easily dissolved in organic solvent such as chloroform, dichloroethylene, banana oil, etc.
PVC is polyvinyl chloride plastic, bright in color, corrosion resistant, firm and durable, and because some toxic auxiliary materials such as plasticizer, anti-aging agent and the like are added in the manufacturing process, the product is not generally used for storing food and medicines.
ABS is a plastic polymerized by acrylonitrile, butadiene and styrene, has striking color, heat resistance and firmness, can be coated with chromium, nickel and other metal films on the outer surface, and can be used for manufacturing keys, buttons, knife rests, television shells, umbrella handles and the like.
PA is nylon plastic, which is tough, firm and wear-resistant in property, and is commonly used for manufacturing combs, toothbrushes, clothes hooks, fan ribs, net bag ropes, fruit outer packaging bags and the like, and is nontoxic but can not be contacted with acid and alkali for a long time.
The application of the pipe in the building decoration is very wide, and the pipe needs to face various environments in the using process, at present, the plastic particles for the pipe need to be improved in the aspects of oil and acid resistance, cold resistance, migration resistance, tear resistance, bending resistance, environmental protection and no pollution, and the plastic particles with the properties are needed to be used for producing the pipe.
Disclosure of Invention
The invention aims to provide cold-resistant and bending-resistant plastic particles for pipes, which have good oleic acid resistance, cold resistance, migration resistance, tear resistance, bending resistance, environmental protection and no pollution, and a preparation method thereof, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the cold-resistant and bending-resistant plastic particle for the pipe comprises 75-85 parts of PVC, 58-62 parts of plasticizer, 3-6 parts of epoxidized soybean oil, 12-18 parts of TPU, 1-3 parts of stabilizer and 0.5-1 part of processing aid.
Preferably, the PVC is 80 parts, the plasticizer is 60 parts, the epoxidized soybean oil is 4 parts, the TPU is 15 parts, the stabilizer is 2 parts, and the processing aid is 0.8 part.
Preferably, the polymerization degree of the PVC is 1300.
Preferably, the plasticizer is a polyester plasticizer.
Preferably, the stabilizer is a calcium-zinc composite stabilizer.
Preferably, the processing aid is an internal and external lubricant.
Preferably, the PVC contains epoxy resin, PET resin, stearic acid and light activated calcium carbonate, and the plasticizer is added after the PVC is heated to more than 60 ℃.
Preferably, the preparation method of the cold-resistant and bending-resistant plastic particles for the pipe comprises the following steps:
A. firstly, mixing PVC powder to more than 60 ℃;
B. adding a plasticizer;
C. adding epoxidized soybean oil and a stabilizer when the temperature of the material is 80 ℃;
D. adding a processing aid when the temperature is raised to about 95 ℃;
E. adding TPU when the temperature is raised to about 105 ℃, and discharging and cooling when the temperature is raised to about 115-120 ℃;
F. after cooling to about 60 ℃, feeding the mixture into a BOSS extruder through a feeding device for plasticizing;
G. and (3) strongly shearing and plasticizing through a high-speed plasticizing screw, uniformly mixing, carrying out single-screw heat preservation and filtration, and cooling and molding through a granulating die head.
Compared with the prior art, the invention has the beneficial effects that:
the product has good oleic acid resistance, cold resistance, migration resistance, tear resistance, bending resistance, environmental protection and no pollution.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides the following technical scheme: the cold-resistant and bending-resistant plastic particle for the pipe is characterized in that: comprises 75-85 parts of PVC, 58-62 parts of plasticizer, 3-6 parts of epoxidized soybean oil, 12-18 parts of TPU, 1-3 parts of stabilizer and 0.5-1 part of processing aid.
PVC used in the cold-resistant and bending-resistant plastic particles for the pipe contains epoxy resin, PET resin, stearic acid and light activated calcium carbonate, the polymerization degree of the PVC is 1300, the plasticizer in the cold-resistant and bending-resistant plastic particles for the pipe adopts a polyester plasticizer, the stabilizer is a calcium-zinc composite stabilizer, and the processing aid is an internal and external lubricant.
When cold-resistant and bending-resistant plastic particles for pipes are used, firstly, 75-85 parts of PVC, 58-62 parts of plasticizer, 3-6 parts of epoxidized soybean oil, 12-18 parts of TPU, 1-3 parts of stabilizer and 0.5-1 part of processing aid are mixed to be more than 60 ℃, then, polyester plasticizer is added into the mixed powder, the epoxidized soybean oil and calcium-zinc composite stabilizer are added when the temperature of the mixed powder is 80 ℃, the processing aid of the internal and external lubricants is added when the temperature is increased to about 95 ℃, the TPU is added when the temperature is increased to about 105 ℃, the discharged materials are cooled when the temperature is about 115 ℃ and 120 ℃, the discharged materials are cooled about 60 ℃, the cooled materials are fed into a BOSS extruder for plasticization through a feeding device, the plasticized materials are sheared and plasticized through a high-speed plasticizing screw, the mixed materials are mixed uniformly, the single screw is subjected to heat preservation and filtration, and the cooled and.
In the embodiment 1, when cold-resistant and bending-resistant plastic particles for pipes are used, 76 parts of PVC, 58 parts of plasticizer, 3 parts of epoxidized soybean oil, 12 parts of TPU, 1 part of stabilizer and 0.5 part of processing aid are mixed to be more than 60 ℃, then polyester plasticizer is added into the mixed powder, the epoxidized soybean oil and calcium-zinc composite stabilizer are added when the temperature of the mixed powder is 80 ℃, the processing aid of internal and external lubricants is added when the temperature is increased to about 95 ℃, the TPU is added when the temperature is increased to about 105 ℃, the discharged material is cooled when the temperature is about 115 ℃ and 120 ℃, the discharged material is cooled about 60 ℃, the cooled material is thrown into a BOSS extruder through a feeding device for plasticizing, the plasticized material is powerfully sheared and plasticized through a high-speed screw, the mixed material is uniformly, the single-screw heat-preservation filtering is carried out, and the cut plastic particles are cooled and.
In the embodiment 2, when cold-resistant and bending-resistant plastic particles for pipes are used, 77 parts of PVC, 59 parts of plasticizer, 4 parts of epoxidized soybean oil, 13 parts of TPU, 2 parts of stabilizer and 0.6 part of processing aid are mixed to be more than 60 ℃, then polyester plasticizer is added into the mixed powder, the epoxidized soybean oil and calcium-zinc composite stabilizer are added when the temperature of the material is 80 ℃, the processing aid of internal and external lubricants is added when the temperature is increased to about 95 ℃, the TPU is added when the temperature is increased to about 105 ℃, the discharged material is cooled when the temperature is about 115 ℃ or 120 ℃, the discharged material is cooled to about 60 ℃, the discharged material is thrown into a BOSS extruder through a feeding device for plasticizing, the plasticized material is sheared and plasticized through a high-speed screw strong shearing die head, the mixed material is uniformly, and single-screw heat-preservation filtering is carried out until the particles are cut and.
In the embodiment 3, when cold-resistant and bending-resistant plastic particles for pipes are used, 78 parts of PVC, 60 parts of plasticizer, 5 parts of epoxidized soybean oil, 14 parts of TPU, 3 parts of stabilizer and 0.7 part of processing aid are mixed to be more than 60 ℃, then polyester plasticizer is added into the mixed powder, the epoxidized soybean oil and calcium-zinc composite stabilizer are added when the temperature of the material is 80 ℃, the processing aid of internal and external lubricants is added when the temperature is increased to about 95 ℃, the TPU is added when the temperature is increased to about 105 ℃, the discharged material is cooled when the temperature is about 115 ℃ or 120 ℃, the discharged material is cooled to about 60 ℃, the discharged material is fed into a BOSS extruder through a feeding device for plasticization, the plasticized material is sheared and plasticized through a high-speed screw strong shearing die head, the mixed material is uniformly, the single-screw heat-preservation filtering is carried out, and the cut particles.
Example 4, when cold-resistant and bending-resistant plastic particles for pipes are used, 79 parts of PVC, 59 parts of plasticizer, 4 parts of epoxidized soybean oil, 15 parts of TPU, 2 parts of stabilizer and 0.8 part of processing aid are mixed to 60 ℃ or above, then a polyester plasticizer is added into the mixed powder, the epoxidized soybean oil and calcium-zinc composite stabilizer are added when the temperature of the material is 80 ℃, the processing aid of the internal and external slip agent is added when the temperature is about 95 ℃, the TPU is added when the temperature is about 105 ℃, the discharged material is cooled when the temperature is about 115 ℃ or about 120 ℃, the discharged material is cooled about 60 ℃, the discharged material is fed into a BOSS extruder through a feeding device for plasticization, the plasticized material is sheared and plasticized through a high-speed screw strong shearing die head, the mixed material is uniformly, and single-screw heat-preservation filtration is carried out until the particles are cut and cooled for.
Example 5, when cold-resistant and bending-resistant plastic particles for pipes are used, 80 parts of PVC, 60 parts of plasticizer, 5 parts of epoxidized soybean oil, 16 parts of TPU, 2 parts of stabilizer and 0.9 part of processing aid are mixed to 60 ℃ or above, then a polyester plasticizer is added into the mixed powder, the epoxidized soybean oil and calcium-zinc composite stabilizer are added when the temperature of the material is 80 ℃, the processing aid of the internal and external slip agent is added when the temperature is about 95 ℃, the TPU is added when the temperature is about 105 ℃, the discharged material is cooled when the temperature is about 115 ℃ or about 120 ℃, the discharged material is cooled about 60 ℃, the discharged material is fed into a BOSS extruder through a feeding device for plasticization, the plasticized material is sheared and plasticized through a high-speed screw, the mixed material is uniformly mixed, and the single-screw heat-preservation filtration is carried out until the particles are cut and cooled for molding.
Example 6, when cold-resistant and bending-resistant plastic particles for pipes are used, 81 parts of PVC, 61 parts of plasticizer, 6 parts of epoxidized soybean oil, 17 parts of TPU, 2 parts of stabilizer and 1 part of processing aid are mixed to 60 degrees or above, then a polyester plasticizer is added to the mixed powder, the epoxidized soybean oil and calcium-zinc composite stabilizer are added when the temperature of the material is 80 ℃, the processing aid of the internal and external lubricant is added when the temperature is about 95 ℃, the TPU is added when the temperature is about 105 ℃, the discharged material is cooled when the temperature is about 115 ℃, the discharged material is cooled when the temperature is about 60 ℃, the cooled material is fed to a BOSS extruder through a feeding device for plasticizing, the plasticized material is sheared and plasticized by a high-speed plasticizing screw, the mixture is mixed uniformly, and the single-screw heat-preservation filtering is carried out, and the mixture is cooled and molded through a dicing die.
Example 7, when cold-resistant and bending-resistant plastic particles for pipes are used, 82 parts of PVC, 62 parts of plasticizer, 7 parts of epoxidized soybean oil, 17 parts of TPU, 3 parts of stabilizer and 1.1 parts of processing aid are mixed to 60 ℃ or above, then a polyester plasticizer is added into the mixed powder, the epoxidized soybean oil and calcium-zinc composite stabilizer are added when the temperature of the material is 80 ℃, the processing aid of the internal and external slip agent is added when the temperature is about 95 ℃, the TPU is added when the temperature is about 105 ℃, the discharged material is cooled when the temperature is about 115 ℃ or about 120 ℃, the discharged material is cooled about 60 ℃, the discharged material is fed into a BOSS extruder through a feeding device for plasticization, the plasticized material is sheared and plasticized through a high-speed screw strong shearing die head, the mixed material is uniformly, and single-screw heat-preservation filtration is carried out until the particles are cut and cooled for.
Example 8, when cold-resistant and bending-resistant plastic particles for pipes are used, 82 parts of PVC, 62 parts of plasticizer, 8 parts of epoxidized soybean oil, 18 parts of TPU, 3 parts of stabilizer and 1.2 parts of processing aid are mixed to 60 ℃ or above, then a polyester plasticizer is added into the mixed powder, the epoxidized soybean oil and calcium-zinc composite stabilizer are added when the temperature of the material is 80 ℃, the processing aid of the internal and external slip agent is added when the temperature is about 95 ℃, the TPU is added when the temperature is about 105 ℃, the discharged material is cooled when the temperature is about 115 ℃ or about 120 ℃, the discharged material is cooled about 60 ℃, the discharged material is fed into a BOSS extruder through a feeding device for plasticization, the plasticized material is sheared and plasticized through a high-speed screw strong shearing die head, the mixed material is uniformly, and single-screw heat-preservation filtration is carried out until the particles are cut and cooled for.
In the process of using the cold-resistant and bending-resistant plastic particles for the pipe, the product of the prepared bending plastic particles has good oleic acid resistance, cold resistance, migration resistance, tear resistance, bending resistance and better performance in the aspects of environmental protection and no pollution when PVC80 parts, 60 parts of plasticizer, 4 parts of epoxidized soybean oil, 15 parts of TPU, 2 parts of stabilizer and 0.8 part of processing aid are used.
The preparation method of the cold-resistant and bending-resistant plastic particles for the pipe comprises the following steps:
A. firstly, mixing PVC powder to more than 60 ℃;
B. adding a plasticizer;
C. adding epoxidized soybean oil and a stabilizer when the temperature of the material is 80 ℃;
D. adding a processing aid when the temperature is raised to about 95 ℃;
E. adding TPU when the temperature is raised to about 105 ℃, and discharging and cooling when the temperature is raised to about 115-120 ℃;
F. after cooling to about 60 ℃, feeding the mixture into a BOSS extruder through a feeding device for plasticizing;
G. and (3) strongly shearing and plasticizing through a high-speed plasticizing screw, uniformly mixing, carrying out single-screw heat preservation and filtration, and cooling and molding through a granulating die head.
Compared with the prior art, the invention has the beneficial effects that:
the product has good oleic acid resistance, cold resistance, migration resistance, tear resistance, bending resistance, environmental protection and no pollution.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The cold-resistant and bending-resistant plastic particle for the pipe is characterized in that: comprises 75-85 parts of PVC, 58-62 parts of plasticizer, 3-6 parts of epoxidized soybean oil, 12-18 parts of TPU, 1-3 parts of stabilizer and 0.5-1 part of processing aid.
2. The cold-resistant and bending-resistant plastic particle for pipe as claimed in claim 1, wherein: the PVC material comprises, by weight, 80 parts of PVC, 60 parts of a plasticizer, 4 parts of epoxidized soybean oil, 15 parts of TPU, 2 parts of a stabilizer and 0.8 part of a processing aid.
3. The cold-resistant and bending-resistant plastic particle for pipe as claimed in claim 1, wherein: the polymerization degree of the PVC is 1300.
4. The cold-resistant and bending-resistant plastic particle for pipe as claimed in claim 1, wherein: the plasticizer is a polyester plasticizer.
5. The cold-resistant and bending-resistant plastic particle for pipe as claimed in claim 1, wherein: the stabilizer is a calcium-zinc composite stabilizer.
6. The cold-resistant and bending-resistant plastic particle for pipe as claimed in claim 1, wherein: the processing aid is an internal and external lubricant.
7. The cold-resistant and bending-resistant plastic particle for pipe as claimed in claim 1, wherein: the PVC contains epoxy resin, PET resin, stearic acid and light active calcium carbonate, and the plasticizer is added after the PVC is heated to more than 60 ℃.
8. The cold-resistant and bending-resistant plastic particle for the pipe is prepared by the following steps:
A. firstly, mixing PVC powder to more than 60 ℃;
B. adding a plasticizer;
C. adding epoxidized soybean oil and a stabilizer when the temperature of the material is 80 ℃;
D. adding a processing aid when the temperature is raised to about 95 ℃;
E. adding TPU when the temperature is raised to about 105 ℃, and discharging and cooling when the temperature is raised to about 115-120 ℃;
F. after cooling to about 60 ℃, feeding the mixture into a BOSS extruder through a feeding device for plasticizing;
G. and (3) strongly shearing and plasticizing through a high-speed plasticizing screw, uniformly mixing, carrying out single-screw heat preservation and filtration, and cooling and molding through a granulating die head.
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| CN201911028060.3A CN110791038A (en) | 2019-10-28 | 2019-10-28 | Cold-resistant and bending-resistant plastic particle for pipe and preparation method thereof |
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