CN111440398B - Special material for ion-crosslinked polyvinyl chloride protection tube - Google Patents
Special material for ion-crosslinked polyvinyl chloride protection tube Download PDFInfo
- Publication number
- CN111440398B CN111440398B CN202010473562.3A CN202010473562A CN111440398B CN 111440398 B CN111440398 B CN 111440398B CN 202010473562 A CN202010473562 A CN 202010473562A CN 111440398 B CN111440398 B CN 111440398B
- Authority
- CN
- China
- Prior art keywords
- polyvinyl chloride
- parts
- ion
- crosslinked polyvinyl
- protection tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention belongs to the field of synthetic materials, and particularly relates to a special material for an ion crosslinked polyvinyl chloride protection tube. The special material for the ion-crosslinked polyvinyl chloride protection tube has the advantages that the particle crosslinked polyvinyl chloride is adopted to replace the conventional polyvinyl chloride, and a proper auxiliary agent and a proper proportion are added, so that the heat resistance is obviously and greatly improved when the special material for the ion-crosslinked polyvinyl chloride protection tube is applied compared with the conventional material, the Vicat softening temperature is improved by more than 10 ℃ compared with the conventional polyvinyl chloride, and the tensile strength, the bending strength and the bending modulus are improved by about 20%. Has excellent performance and is very suitable for power cable conduits.
Description
Technical Field
The invention belongs to the field of synthetic materials, and particularly relates to a special material for an ion crosslinked polyvinyl chloride protection tube.
Background
Polyvinyl chloride pipes are widely applied to chemical pipelines, water supply pipes, sewage pipes and cable protection pipes of electric power systems, and are usually plastic pipes prepared by extrusion molding of common suspension polymerization polyvinyl chloride resin, a stabilizer, a lubricant, a toughening agent, a processing rheological agent, other related auxiliaries and the like by a hot pressing method.
However, in special environments, such as harsh conditions of high pressure, high temperature, etc., polyvinyl chloride pipes are easy to soften, deform, etc., which, on one hand, shortens the service life of the pipes, and, on the other hand, causes maintenance difficulties in various fields, for example, when the polyvinyl chloride pipes are applied to cable protection pipes of power systems, the heating temperature of the cables sometimes reaches 100 ℃, and the polyvinyl chloride pipes generally soften and deform at the temperature, which increases the difficulty of cable maintenance!
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the special material for the ion-crosslinked polyvinyl chloride protection tube, which adopts particle-crosslinked polyvinyl chloride to replace the conventional polyvinyl chloride and is supplemented with proper auxiliaries and proportion, so that the heat resistance of the special material for the ion-crosslinked polyvinyl chloride protection tube is obviously improved compared with the conventional material when the special material is applied, the Vicat softening temperature of the conventional polyvinyl chloride is improved by more than 10 ℃, and the tensile strength, the bending strength and the bending modulus are improved by about 20 percent. Has excellent performance and is very suitable for power cable conduits.
The specific technical scheme of the invention is as follows:
the material special for the ion-crosslinked polyvinyl chloride protection tube comprises the following raw material components in parts by weight:
ion-crosslinked polyvinyl chloride resin: 55-65 parts of chlorinated polyvinyl chloride resin: 5-10 parts of acrylate rubber (ACM): 8-12 parts of a heat stabilizer: 3-5 parts of nano calcium carbonate: 2-5 parts of nano calcium carbonate crystal whisker: 10-15 parts of EVA-maleic anhydride graft: 3-7 parts of photo-oxygen composite stabilizer: 0.1-0.5 part, silane coupling agent: 0.5-2 parts of polyvinylpyrrolidone: 0.5-1.5 parts of polyethylene wax: 0.5-1.5 parts of polytetrafluoroethylene: 0.2 to 0.5 portion.
The Vicat softening temperature of the special material for the ion-crosslinked polyvinyl chloride protection tube is 91-95 ℃.
The heat stabilizer is a conventional product, can be selected from lead salt, calcium-zinc heat stabilizer, metal soaps (calcium stearate, lead stearate and the like), organic tin heat stabilizer, rare earth heat stabilizer and the like, and preferably is calcium-zinc heat stabilizer.
The photo-oxygen composite stabilizer is selected from conventional products, but for better effect, the photo-oxygen composite stabilizer is preferably prepared according to the following method: mixing an antioxidant 1010: uniformly mixing the antioxidant 168 in a ratio of 1:3, and then uniformly mixing the antioxidant with the ultraviolet absorbent UV531 in a ratio of 1: 1;
preferably, the silane coupling agent is selected from KH 550;
the ionic crosslinked polyvinyl chloride resin in the components is used as a main base material and plays a key role, and the ionic crosslinked polyvinyl chloride resin is formed by that ionic charges and ions in ionomer molecules have some interactions, and ionic bonds are used as intermolecular crosslinks, so that the ionic crosslinked polyvinyl chloride resin is internally aggregated into an ionic region to generate an ionic crosslinked structure. Meanwhile, the auxiliary agents selected in the application, such as chlorinated polyvinyl chloride resin, are mixed in proportion to improve the strength and the ring stiffness of the pipe; the acrylic rubber is taken as a toughening agent, so that the brittleness is reduced, the toughness is increased, the bearing strength is improved, meanwhile, the plasticizing time is shortened, and the impact strength of the pipe falling weight is improved; the composite thermal stabilization stage mainly plays a role in processing and molding thermal stabilization, and prevents materials from thermal decomposition in the molding process; the use of the nano calcium carbonate reduces the shrinkage rate of the pipe, maintains the dimensional stability and is beneficial to molding processing; the nano calcium carbonate crystal whisker mainly plays the roles of improving the strength and reducing the shrinkage; the EVA-maleic anhydride graft is used as a compatibilizer, the solubility parameters of the EVA and the particle crosslinked polyvinyl chloride are relatively close, the EVA and the particle crosslinked polyvinyl chloride have good compatibility and toughening effect, and compared with other grafts such as polyethylene maleic anhydride graft and polypropylene maleic anhydride graft, the EVA-maleic anhydride graft has more obvious toughening effect and improves the impact strength; the photo-oxygen composite stabilizer is used as a weather resistant agent to prolong the service life of the pipe; the silane coupling agent can improve the compatibility of the resin and calcium carbonate; the polyvinylpyrrolidone plays roles in lubrication and brightening; polyethylene wax is used as a lubricant and a brightening agent; the polytetrafluoroethylene improves the wear resistance of the pipe. In conclusion, the existence of ionic bonds of the main chain of the ionic crosslinked polyvinyl chloride resin material and the matching of various auxiliary agents enable the polymer to have the physical characteristics of crosslinked macromolecules, and the mechanical properties (tensile strength, bending modulus and the like) and the heat resistance are greatly improved.
A material special for an ion cross-linked polyvinyl chloride protection tube comprises the following production processes: the raw materials are mixed according to a proportion and uniformly mixed in a high-speed mixer, and the mixture is mixed in a low-speed mixer to below 60 ℃ when the temperature of the mixed materials reaches 110-120 ℃.
When the special material for the ion-crosslinked polyvinyl chloride protection tube is used for producing the tube, the mixed special material is directly extruded and molded by a conventional hot-pressing method, and the more preferable method is as follows: extruding the pipe by a conical double-screw extruder set, wherein the working temperature of the double-screw extruder is 150-195 ℃, and the rotating speed of the screw is 60-100 r/min.
The special material for the ion-crosslinked polyvinyl chloride protection tube has excellent comprehensive performance, the performance of the tube prepared by the special material is superior to that of the traditional polyvinyl chloride, the performance of the tube exceeds the index requirement specified by DL/T802.3-2007 standard, and the special material has excellent Vicat softening temperature (91-95 ℃, detected according to GB/T8802-2001), mechanical strength, impact property and wear resistance.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but it should not be construed that the scope of the above subject matter is limited to the following examples. All the technologies realized based on the above contents of the present invention belong to the scope of the present invention. Except as otherwise noted, the following examples were carried out using conventional techniques.
In the following examples, EVA-maleic anhydride grafts are all commercial products, and the grafting rate is 1%; KH550 is selected as the silane coupling agent;
the photo-oxygen composite stabilizer is prepared according to the following method: mixing an antioxidant 1010: uniformly mixing the antioxidant 168 in a ratio of 1:3, and then uniformly mixing the antioxidant with the ultraviolet absorbent UV531 in a ratio of 1: 1;
the heat stabilizer is calcium zinc heat stabilizer, which is purchased from Jiangsu alliance chemical company Limited and has the mark of LF-S7006 KT.
The materials of examples 1 to 3 and comparative examples, which are specific for the protection tube of ion-crosslinked polyvinyl chloride of the present invention, were prepared according to the formulation listed in the following table, by mixing the raw materials in proportion and uniformly mixing them in a high-speed mixer, and mixing the mixture to a temperature of 110 ℃ to 120 ℃ in a low-speed mixer to a temperature of 60 ℃ or less.
| Components | Example 1 | Example 2 | Example 3 | Comparative example |
| Ionic crosslinked polyvinyl chloride resin | 55 | 60 | 65 | / |
| Suspension polyvinyl chloride | / | / | / | 60 |
| Chlorinated polyvinyl chloride | 8 | 6 | 10 | 8 |
| Acrylate rubber | 8 | 10 | 12 | 10 |
| Composite heat stabilizer | 4 | 3 | 5 | 5 |
| Photo-oxygen composite stabilizer | 0.3 | 0.3 | 0.3 | 0.3 |
| Nano calcium carbonate crystal whisker | 10 | 12 | 15 | 10 |
| Silane coupling agent | 1.5 | 1.5 | 1.5 | 1.5 |
| Nano calcium carbonate | 3 | 3 | 3 | 3 |
| EVA-g-MAH | 5 | 6 | 7 | 4 |
| Polyvinylpyrrolidone | 1 | 1 | 1 | 1 |
| Polyethylene wax | 1 | 1 | 1 | 1 |
| Polytetrafluoroethylene | 0.3 | 0.3 | 0.3 | 0.3 |
Note: the components in the above table are in parts by weight.
The special material for the ion-crosslinked polyvinyl chloride protection tube of each example and comparative example was subjected to performance tests, and the results were as follows:
therefore, compared with the polyvinyl chloride pipe in the prior art, the special material for the ion-crosslinked polyvinyl chloride protection pipe has the advantages that the performance in all aspects is improved, particularly the micro-calorie softening temperature is obviously improved, and the special material for the ion-crosslinked polyvinyl chloride protection pipe is very suitable for the fields of power cable protection pipes and the like.
Claims (6)
1. The material special for the ion-crosslinked polyvinyl chloride protection tube is characterized by comprising the following raw materials in parts by weight: ion-crosslinked polyvinyl chloride resin: 55-65 parts of chlorinated polyvinyl chloride resin: 5-10 parts of acrylate rubber (ACM): 8-12 parts of a heat stabilizer: 3-5 parts of nano calcium carbonate: 2-5 parts of nano calcium carbonate crystal whisker: 10-15 parts of EVA-maleic anhydride graft: 3-7 parts of photo-oxygen composite stabilizer: 0.1-0.5 part, silane coupling agent: 0.5-2 parts of polyvinylpyrrolidone: 0.5-1.5 parts of polyethylene wax: 0.5-1.5 parts of polytetrafluoroethylene: 0.2 to 0.5 portion.
2. The material as claimed in claim 1, wherein the Vicat softening temperature of the material is 91-95 ℃.
3. The material as claimed in claim 1, wherein the heat stabilizer is selected from calcium-zinc heat stabilizers.
4. The material as claimed in claim 1, wherein the photo-oxygen composite stabilizer is prepared by the following method: mixing an antioxidant 1010: and uniformly mixing the antioxidant 168 in a ratio of 1:3, and then uniformly mixing the antioxidant with the ultraviolet absorbent UV531 in a ratio of 1: 1.
5. The material as claimed in claim 1, wherein said silane coupling agent is selected from KH 550.
6. The preparation method of the material special for the ion crosslinked polyvinyl chloride protection tube, as recited in claim 1, is characterized in that the production process comprises: the raw materials are mixed according to a proportion and uniformly mixed in a high-speed mixer, and the mixture is mixed in a low-speed mixer to below 60 ℃ when the temperature of the mixed materials reaches 110-120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010473562.3A CN111440398B (en) | 2020-05-28 | 2020-05-28 | Special material for ion-crosslinked polyvinyl chloride protection tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010473562.3A CN111440398B (en) | 2020-05-28 | 2020-05-28 | Special material for ion-crosslinked polyvinyl chloride protection tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111440398A CN111440398A (en) | 2020-07-24 |
| CN111440398B true CN111440398B (en) | 2021-08-10 |
Family
ID=71648399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010473562.3A Active CN111440398B (en) | 2020-05-28 | 2020-05-28 | Special material for ion-crosslinked polyvinyl chloride protection tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111440398B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113429723A (en) * | 2021-08-03 | 2021-09-24 | 江苏瀚能电气有限公司 | Modified polyvinyl chloride material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995023826A1 (en) * | 1994-03-02 | 1995-09-08 | Garfield, Nathaniel, H. | Method of modification of bulk polymers with metal catalyzed ionic polymerization |
| JP2002338765A (en) * | 2001-05-15 | 2002-11-27 | Fujikura Ltd | Cross-linkable resin composition |
| CN102863711A (en) * | 2011-07-06 | 2013-01-09 | 中国石油化工股份有限公司 | Heat-resisting PVC high impact-resisting tubular product and preparation method thereof |
| CN103304914A (en) * | 2013-04-23 | 2013-09-18 | 杭州联通管业有限公司 | Super-tough and super-flexible high-temperature-resistance polyvinyl chloride pipe and manufacturing technology thereof |
| CN106751116A (en) * | 2016-04-23 | 2017-05-31 | 佛山瑞箭体育器材有限公司 | A kind of PVC composition |
-
2020
- 2020-05-28 CN CN202010473562.3A patent/CN111440398B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995023826A1 (en) * | 1994-03-02 | 1995-09-08 | Garfield, Nathaniel, H. | Method of modification of bulk polymers with metal catalyzed ionic polymerization |
| JP2002338765A (en) * | 2001-05-15 | 2002-11-27 | Fujikura Ltd | Cross-linkable resin composition |
| CN102863711A (en) * | 2011-07-06 | 2013-01-09 | 中国石油化工股份有限公司 | Heat-resisting PVC high impact-resisting tubular product and preparation method thereof |
| CN103304914A (en) * | 2013-04-23 | 2013-09-18 | 杭州联通管业有限公司 | Super-tough and super-flexible high-temperature-resistance polyvinyl chloride pipe and manufacturing technology thereof |
| CN106751116A (en) * | 2016-04-23 | 2017-05-31 | 佛山瑞箭体育器材有限公司 | A kind of PVC composition |
Non-Patent Citations (2)
| Title |
|---|
| 《离子交联聚氯乙烯的结构与性能》;包永忠 黄志明 翁志学 潘祖仁;《高等学校化学学报》;19990215;第299-303页 * |
| 《羧酸型离聚体的研究进展》;于晓璐，徐慧，刘树骏，黄兆阁;《工 程 塑 料 应 用》;20170110;142-145页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111440398A (en) | 2020-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101314672A (en) | High-gloss, low-smell, reinforced nylon composite material and preparation method thereof | |
| CN109456563B (en) | Special material for UHMWPE alloy compatibilization toughening modified polypropylene corrugated pipe and preparation method thereof | |
| CN109401045B (en) | Special material for high-performance functionalized alloy modified polypropylene corrugated pipe and preparation method thereof | |
| WO2022100025A1 (en) | Polyamide composition having high wear resistance and low temperature rise, preparation method therefor and application thereof | |
| CN111440398B (en) | Special material for ion-crosslinked polyvinyl chloride protection tube | |
| CN109679243B (en) | Heat-resistant corrosion-resistant polyvinyl chloride water supply and drainage pipe and preparation method thereof | |
| CN102936372A (en) | Polypropylene composite material, preparation method and applications thereof | |
| CN106832698A (en) | A kind of chlorinated polyvinyl chloride tubes composition and tubing preparation method | |
| CN111423689B (en) | Modified polypropylene material and preparation method and application thereof | |
| CN111040307A (en) | Polypropylene corrugated pipe composite material and preparation method of composite polypropylene corrugated pipe | |
| CN108530786B (en) | Anti-aging HIPS foamed plastic and preparation method thereof | |
| CN104311982B (en) | A kind of room temperature silane self-crosslinking POE flexible pipe and preparation method thereof | |
| CN111186153A (en) | PE plastic pipeline manufacturing process | |
| CN115636995B (en) | Polyethylene resin composition, modified high-density polyethylene composite material and preparation method thereof | |
| CN113388192B (en) | High-toughness low-temperature-resistant high-gloss regenerated PP modified material and preparation method thereof | |
| CN112724578B (en) | Polypropylene compound and application and preparation method thereof | |
| CN113773628A (en) | Flame-retardant PC composition and preparation method thereof | |
| CN110746758B (en) | Preparation method of PC-ABS alloy material | |
| CN110903486B (en) | Compatilizer, preparation method thereof and PET/inorganic filler composite material | |
| CN114015236A (en) | High-strength and high-wear-resistance carbon fiber reinforced polyphenylene sulfide composite material and preparation method thereof | |
| CN113845709A (en) | Anti-sagging modified high-density polyethylene water supply pipe and preparation method thereof | |
| CN112457584A (en) | Novel layered material composite long glass fiber reinforced polypropylene composite material and preparation method thereof | |
| CN108003479B (en) | Composite additive for random copolymerization polypropylene pipe | |
| CN113429723A (en) | Modified polyvinyl chloride material and preparation method thereof | |
| CN110746679A (en) | Special material for heat-resistant polyethylene steel framework reinforced composite pipeline and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |