CN112693198B - High-temperature-resistant high-pressure-resistant hose and production process thereof - Google Patents
High-temperature-resistant high-pressure-resistant hose and production process thereof Download PDFInfo
- Publication number
- CN112693198B CN112693198B CN202110077140.9A CN202110077140A CN112693198B CN 112693198 B CN112693198 B CN 112693198B CN 202110077140 A CN202110077140 A CN 202110077140A CN 112693198 B CN112693198 B CN 112693198B
- Authority
- CN
- China
- Prior art keywords
- parts
- layer
- temperature
- sebacic acid
- dipentaerythritol
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a general shape other than plane
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/22—Layered products comprising a layer of synthetic resin characterised by the use of special additives using plasticisers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
- F16L11/081—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire
- F16L11/082—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more layers of a helically wound cord or wire two layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2597/00—Tubular articles, e.g. hoses, pipes
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/324—Alkali metal phosphate
-
- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- 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
Abstract
The utility model relates to a PVC material technical field, a high temperature and high pressure resistant hose includes skin, second winding layer, intermediate level, first winding layer, inlayer in proper order from outer to interior, the inlayer is made by the raw materials that contains following parts by weight: PVC, a plasticizer, a polymer of dipentaerythritol and sebacic acid, a high-temperature resistant stabilizer, tackifying resin and a lubricant. A production process of a high-temperature and high-pressure resistant hose comprises the following steps: the method comprises the following steps of preparing a first material, preparing a second material, extruding and forming an inner layer, preparing a first winding layer, extruding and forming an intermediate layer, preparing a second winding layer and extruding and forming an outer layer. By adding the polymer of dipentaerythritol and sebacic acid, the toughness, mechanical strength and high-temperature aging resistance of the inner layer are improved. The pH value is adjusted to be less than 3, so that the toughness of the inner layer is further improved, and the inner layer is convenient to bend. The heat resistance of the inner layer is improved by adding heptadecenoic triglyceride.
Description
Technical Field
The application relates to the technical field of PVC materials, in particular to a high-temperature and high-pressure resistant hose and a production process thereof.
Background
The hose is generally composed of an inner rubber layer, a steel wire braid layer and an outer rubber layer. Typically for transporting liquids, gases, slurries, and the like.
The material of hose is PVC (polyvinyl chloride) usually, and PVC thermal stability is relatively poor, and easy thermal decomposition, and the chlorion that produces after the decomposition can further autocatalytically decompose, leads to the hose when transportation high temperature high pressure liquid, takes place ageing because of the high temperature easily, and ageing back hose mechanical strength descends, leads to the hose to take place to swell or weeping, makes hose life shorter.
Disclosure of Invention
In order to improve when transporting high temperature high pressure in the hose, the hose is easy to bulge or weep, leads to the short problem of hose life, this application provides a high temperature resistant high pressure hose and production technology thereof.
In a first aspect, the present application provides a high temperature and high pressure resistant hose, which adopts the following technical scheme:
the utility model provides a high temperature and high pressure resistant hose, includes skin, second winding layer, intermediate level, first winding layer, inlayer from outer to interior in proper order, the inlayer is made by the raw materials that contain following parts by weight:
90-110 parts of PVC;
50-60 parts of a plasticizer;
18-22 parts of a polymer of dipentaerythritol and sebacic acid;
1-3 parts of a high-temperature resistant stabilizer;
18-22 parts of tackifying resin;
0.1-0.3 part of lubricant.
Through adopting above-mentioned technical scheme, this hose adopts five layers of designs, improves the intensity of hose, improves the high pressure resistance ability of hose.
The inner layer adopts PVC material as main material, plasticizer is added, and the plasticizer is filled between PVC molecules, so that the intermolecular force in a PVC system is reduced, the PVC fluidity is improved, the inner layer has better flexibility, and the prepared hose is convenient to bend.
The high-temperature resistant stabilizer improves the high-temperature resistance of the inner layer, so that the inner layer is not easy to decompose at high temperature.
The tackifying resin improves the adhesive capacity of the inner layer and other layers and improves the bonding force of the multi-layer structure of the hose.
The lubricant improves the processability of PVC, so that the inner layer is smooth in extrusion molding, and the hose is not easy to extrude unsmoothly to generate defective products in the manufacturing process.
The polymer of dipentaerythritol and sebacic acid can absorb chloride ions, prevent the chloride ions generated after PVC decomposition from further promoting PVC decomposition, and the polymer of pentaerythritol and sebacic acid has a stable structure and is not easy to decompose. By adding the PVC material into a PVC system, the stability of PVC is obviously improved, and the inner layer is not easy to age.
Meanwhile, the macromolecular structure of the polymer of pentaerythritol and sebacic acid is distributed in a PVC system, so that the finishing compactness of the PVC system is improved, the mechanical strength of an inner layer is improved, and the PVC composite material has the characteristic of high pressure resistance. The sebacic acid is in a long-chain molecular structure, carboxyl and pentaerythritol are polymerized to generate ester groups with smaller polarity, so that the polymer of dipentaerythritol and sebacic acid has better compatibility with a PVC system, the polymer of dipentaerythritol and sebacic acid is filled into the PVC system to have better plasticizing effect, the macromolecular structure of the sebacic acid improves mutual entanglement among molecular chains, the interconnection strength among the molecular chains is improved, and the inner layer can keep better toughness under the state of better mechanical strength.
Alternatively, the preparation method of the polymer of dipentaerythritol and sebacic acid is as follows:
weighing 8-12 parts of biquaternary tetrol and 16-24 parts of sebacic acid according to molar parts, dissolving in 500ml of 400-fluid water, adding 2-4ml of 50-60wt% sulfuric acid, stirring and mixing uniformly to obtain a mixture, heating and refluxing for 24-36h, cooling, taking out, washing with petroleum ether, and drying at low pressure to obtain the polymer of dipentaerythritol and sebacic acid.
By adopting the technical scheme, the polymer of dipentaerythritol and sebacic acid is prepared.
Optionally, the pH of the mixture is adjusted to less than 3 with phosphoric acid.
By adopting the technical scheme, when the pH is less than 3, namely under a stronger acidic condition, the esterification polymerization reaction of dipentaerythritol and sebacic acid is carried out, the production of a net structure is inhibited, and the generation of a long-chain structure is promoted. Compared with a net structure, the long-chain structure has better flexibility, so that the toughness of the inner layer is further improved, and the inner layer is convenient to bend.
A plurality of hydroxyl groups in the dipentaerythritol are not completely esterified, and the hydroxyl groups in the polymer of the dipentaerythritol and the sebacic acid have better binding capacity with a PVC system, so that the compatibility of the polymer of the dipentaerythritol and the sebacic acid with the PVC system is improved.
Optionally, the raw material of the inner layer further comprises 0.2-0.6 part by weight of heptadecenoic triglyceride.
By adopting the technical scheme, the addition of the heptadecenoic acid triglyceride has the effect of inhibiting the decomposition of the polymer of dipentaerythritol and sebacic acid, so that the polymer of dipentaerythritol and sebacic acid is not easily decomposed by heat, and the heat resistance of the inner layer is improved.
Optionally, the outer layer is made of the following raw materials in parts by weight:
90-110 parts of PVC;
50-60 parts of a plasticizer;
18-22 parts of a polymer of dipentaerythritol and sebacic acid;
1-3 parts of a high-temperature resistant stabilizer;
18-22 parts of tackifying resin;
0.1-0.3 part of lubricant;
0.2-0.6 part of heptadecenoic triglyceride;
2-4 parts of titanium dioxide.
By adopting the technical scheme, the outer layer and the inner layer are different in that titanium dioxide is added, and the outer layer is easy to be illuminated, so that the titanium dioxide has the functions of absorbing ultraviolet light and reflecting ultraviolet light, the light stability of the outer layer is improved, PVC is not easy to be decomposed by ultraviolet light and cracks appear, and the mechanical strength of the hose is reduced.
Optionally, the first winding layer and the second winding layer are made of polyester yarns.
By adopting the technical scheme, the first winding layer and the second winding layer are formed by winding the polyester yarns, so that the first winding layer and the second winding layer have better high temperature and high pressure and also have the characteristic of convenient bending.
Optionally, the tackifying resin is a phenolic resin.
By adopting the technical scheme, the phenolic resin has better compatibility with PVC, has better chemical stability, is not easy to react with gasoline, petroleum, alcohol, glycol and the like, and the inner layer of the phenolic resin is convenient for transporting liquids such as gasoline, petroleum, alcohol, glycol and the like.
In a second aspect, the present application provides a production process of a high temperature and high pressure resistant hose, which adopts the following technical scheme:
a production process of a high-temperature and high-pressure resistant hose comprises the following steps:
1. preparation of the first material:
weighing PVC, a plasticizer, a polymer of dipentaerythritol and sebacic acid, a high-temperature resistant stabilizer, tackifying resin, a lubricant and heptadecenoic acid triglyceride according to the required weight parts of the formula, uniformly stirring and mixing at the temperature of 140-;
2. preparation of the second material:
weighing PVC, a plasticizer, a polymer of dipentaerythritol and sebacic acid, a high-temperature resistant stabilizer, tackifying resin, a lubricant, heptadecenoic acid triglyceride and titanium dioxide according to the required weight parts of the formula, uniformly stirring and mixing at 150 ℃, and pre-plasticizing at 150-170 ℃ to form particles to obtain a second material;
3. extrusion molding of the inner layer: extruding and cooling the first material at 165-175 ℃ to obtain an inner layer;
4. preparation of the first winding layer: winding polyester yarns on the outer wall of the inner layer to obtain a first winding layer;
5. and (3) extrusion molding of the middle layer: extruding the second material on the outer wall of the first winding layer at 185-195 ℃ to prepare an intermediate layer;
6. preparation of the second winding layer: winding the polyester yarns on the outer wall of the middle layer to obtain a second winding layer;
7. and (3) extrusion molding of the outer layer: and extruding the second material out of the outer wall of the second winding layer at 185-195 ℃, and cooling to obtain an outer layer, thereby obtaining the high-temperature and high-pressure resistant hose.
In summary, the present application has the following beneficial effects:
1. by adding the polymer of dipentaerythritol and sebacic acid, the toughness, mechanical strength and high-temperature aging resistance of the inner layer are improved.
2. In the preparation of the polymer of dipentaerythritol and sebacic acid, phosphoric acid is adopted to adjust the pH value of the mixture to be less than 3, so that the long-chain structure of the polymer of dipentaerythritol and sebacic acid has a large proportion, the toughness of the inner layer is further improved, and the inner layer is convenient to bend.
3. By adding the heptadecenoic triglyceride, the polymer of dipentaerythritol and sebacic acid is not easily decomposed by heat, and the heat resistance of the inner layer is improved.
Detailed Description
The present application will be described in further detail with reference to examples.
| Name of raw materials | Species or origin |
| PVC | HG-2500PVC sold by Zhejiang multielement chemical industry Co., Ltd |
| Plasticizer | Tetraoctyl pyromellitate sold by Shanghai Hua-sparkling chemical auxiliary company Limited is sold under the brand name Huayi. |
| Phenolic resin | TKM-M sold by Changzhou Xinze polymer materials Co., Ltd |
| Lubricant agent | TM-103 PE wax sold by Donghua plastics Co., Ltd, Heshan |
Preparation example
Preparation example 1
Preparation of a polymer of dipentaerythritol and sebacic acid:
weighing 10 parts of biquaternary tetrol and 20 parts of sebacic acid according to molar parts, dissolving in 450ml of water, adding 3ml of 55wt% sulfuric acid, stirring and mixing uniformly to obtain a mixture with pH of 5.2, heating, refluxing for reaction for 32 hours, cooling, taking out, washing with petroleum ether, and drying at low pressure to obtain the polymer of dipentaerythritol and sebacic acid.
Preparation example 2
The difference from preparation example 1 is that the pH of the mixture is adjusted to 2.8 with phosphoric acid.
Preparation example 3
Preparing a high-temperature stabilizer:
weighing 37 parts of hydrotalcite, 20 parts of zinc stearate, 10 parts of calcium stearate, 5 parts of 1076 antioxidant, 5 parts of 168 antioxidant, 15 parts of heavy calcium carbonate and 12 parts of sodium polyphosphate, and uniformly stirring and mixing.
Preparation example 4
Preparing a high-temperature stabilizer: the difference from preparation example 3 is that sodium polyphosphate was not added.
Examples
Example 1
The utility model provides a high temperature and high pressure resistant hose, includes skin, second winding layer, intermediate level, first winding layer, inlayer from outer to interior in proper order, and the inlayer is made by the raw materials that contains following parts by weight:
90 parts of PVC;
50 parts of TOPM;
18 parts of a polymer of dipentaerythritol and sebacic acid obtained in preparation example 1;
1 part of the high-temperature resistant stabilizer prepared in preparation example 3;
18 parts of phenolic resin;
0.1 part of PE wax.
The outer layer is prepared from the following raw materials in parts by weight:
90 parts of PVC;
50 parts of TOPM;
18 parts of a polymer of dipentaerythritol and sebacic acid obtained in preparation example 1;
1 part of the high-temperature resistant stabilizer prepared in preparation example 3;
18 parts of phenolic resin;
0.1 part of PE wax;
2 parts of titanium dioxide.
A production process of a high-temperature and high-pressure resistant hose comprises the following steps:
1. preparation of the first material:
weighing PVC, TOPM, the polymer of dipentaerythritol and sebacic acid prepared in the preparation example 1, the high-temperature-resistant stabilizer prepared in the preparation example 3, phenolic resin and PE wax according to the weight parts required by the formula, uniformly stirring and mixing at 145 ℃, and pre-plasticizing at 160 ℃ to form particles to obtain a first material;
2. preparation of the second material:
weighing PVC, TOPM, the polymer of dipentaerythritol and sebacic acid prepared in the preparation example 1, the high-temperature-resistant stabilizer prepared in the preparation example 3, phenolic resin, PE wax and titanium dioxide according to the weight parts required by the formula, uniformly stirring and mixing at 145 ℃, and pre-plasticizing to form particles at 160 ℃ to obtain a second material;
3. extrusion molding of the inner layer: extruding and cooling the first material at 160 ℃ to obtain an inner layer;
4. preparation of the first winding layer: winding polyester yarns on the outer wall of the inner layer to obtain a first winding layer;
5. and (3) extrusion molding of the middle layer: extruding the second material on the outer wall of the first winding layer at 190 ℃ to obtain an intermediate layer;
6. preparation of the second winding layer: winding the polyester yarns on the outer wall of the middle layer to obtain a second winding layer;
7. and (3) extrusion molding of the outer layer: and extruding and cooling the second material at 190 ℃ to obtain an outer layer, thereby obtaining the high-temperature and high-pressure resistant hose.
Example 2
The utility model provides a high temperature and high pressure resistant hose, includes skin, second winding layer, intermediate level, first winding layer, inlayer from outer to interior in proper order, and the inlayer is made by the raw materials that contains following parts by weight:
110 parts of PVC;
60 parts of TOPM;
22 parts of a polymer of dipentaerythritol and sebacic acid obtained in preparation example 1;
3 parts of the high-temperature-resistant stabilizer prepared in preparation example 3;
22 parts of phenolic resin;
0.3 part of PE wax.
The outer layer is prepared from the following raw materials in parts by weight:
110 parts of PVC;
60 parts of TOPM;
22 parts of a polymer of dipentaerythritol and sebacic acid obtained in preparation example 1;
3 parts of the high-temperature-resistant stabilizer prepared in preparation example 3;
22 parts of phenolic resin;
0.3 part of PE wax;
and 4 parts of titanium dioxide.
A production process of a high-temperature and high-pressure resistant hose comprises the following steps:
1. preparation of the first material:
weighing PVC, TOPM, the polymer of dipentaerythritol and sebacic acid prepared in the preparation example 1, the high-temperature-resistant stabilizer prepared in the preparation example 3, phenolic resin and PE wax according to the weight parts required by the formula, uniformly stirring and mixing at 145 ℃, and pre-plasticizing at 160 ℃ to form particles to obtain a first material;
2. preparation of the second material:
weighing PVC, TOPM, the polymer of dipentaerythritol and sebacic acid prepared in the preparation example 1, the high-temperature-resistant stabilizer prepared in the preparation example 3, phenolic resin, PE wax and titanium dioxide according to the weight parts required by the formula, uniformly stirring and mixing at 145 ℃, and pre-plasticizing at 160 ℃ to form particles to obtain a second material;
3. extrusion molding of the inner layer: extruding and cooling the first material at 160 ℃ to obtain an inner layer;
4. preparation of the first winding layer: winding polyester yarns on the outer wall of the inner layer to obtain a first winding layer;
5. and (3) extrusion molding of the middle layer: extruding the second material on the outer wall of the first winding layer at 190 ℃ to obtain an intermediate layer;
6. preparation of the second winding layer: winding the polyester yarns on the outer wall of the middle layer to obtain a second winding layer;
7. and (3) extrusion molding of the outer layer: and extruding and cooling the second material at 190 ℃ to obtain an outer layer, thereby obtaining the high-temperature and high-pressure resistant hose.
Example 3
The utility model provides a high temperature and high pressure resistant hose, includes skin, second winding layer, intermediate level, first winding layer, inlayer from outer to interior in proper order, and the inlayer is made by the raw materials that contains following parts by weight:
100 parts of PVC;
56 parts of TOPM;
20 parts of a polymer of dipentaerythritol and sebacic acid obtained in preparation example 1;
2 parts of the high-temperature-resistant stabilizer prepared in preparation example 3;
20 parts of phenolic resin;
0.2 part of PE wax.
The outer layer is prepared from the following raw materials in parts by weight:
100 parts of PVC;
56 parts of TOPM;
20 parts of a polymer of dipentaerythritol and sebacic acid obtained in preparation example 1;
2 parts of the high-temperature-resistant stabilizer prepared in preparation example 3;
20 parts of phenolic resin;
0.2 part of PE wax;
and 3 parts of titanium dioxide.
A production process of a high-temperature and high-pressure resistant hose comprises the following steps:
1. preparation of the first material:
weighing PVC, TOPM, the polymer of dipentaerythritol and sebacic acid prepared in the preparation example 1, the high-temperature-resistant stabilizer prepared in the preparation example 3, phenolic resin and PE wax according to the weight parts required by the formula, uniformly stirring and mixing at 145 ℃, and pre-plasticizing at 160 ℃ to form particles to obtain a first material;
2. preparation of the second material:
weighing PVC, TOPM, the polymer of dipentaerythritol and sebacic acid prepared in the preparation example 1, the high-temperature-resistant stabilizer prepared in the preparation example 3, phenolic resin, PE wax and titanium dioxide according to the weight parts required by the formula, uniformly stirring and mixing at 145 ℃, and pre-plasticizing at 160 ℃ to form particles to obtain a second material;
3. extrusion molding of the inner layer: extruding and cooling the first material at 160 ℃ to obtain an inner layer;
4. preparation of the first winding layer: winding polyester yarns on the outer wall of the inner layer to obtain a first winding layer;
5. and (3) extrusion molding of the middle layer: extruding the second material on the outer wall of the first winding layer at 190 ℃ to obtain an intermediate layer;
6. preparation of the second winding layer: winding the polyester yarns on the outer wall of the middle layer to obtain a second winding layer;
7. and (3) extrusion molding of the outer layer: and extruding and cooling the second material at 190 ℃ to obtain an outer layer, thereby obtaining the high-temperature and high-pressure resistant hose.
Example 4
The difference from example 3 is that a polymer of dipentaerythritol and sebacic acid was prepared by preparation example 2.
Example 5
The difference from example 4 is that 0.4 part by weight of heptadecenoic triglyceride was added to each of the first and second materials.
Example 6
The difference from example 5 is that the high temperature stabilizer was prepared from preparation example 4.
Comparative example
Comparative example 1
The difference from example 3 is that no polymer of dipentaerythritol and sebacic acid is added.
Comparative example 2
The difference from comparative example 1 is that 0.4 parts by weight of heptadecenoic triglyceride was added to each of the first and second materials.
Comparative example 3
The difference from example 3 is that dipentaerythritol is substituted in equal amounts for the polymer of dipentaerythritol and sebacic acid.
Comparative example 4
The difference from example 3 is that sebacic acid replaces the polymer of dipentaerythritol and sebacic acid in equal amounts.
Performance test
Test pieces of 100mm by 2mm were prepared according to the first material of the examples and comparative examples, and the following performance tests were carried out on the test pieces:
tensile strength: the tensile strength of the test pieces was measured with reference to GB/T8804.2-2003. The test results are shown in Table 1.
Testing of toughness: the impact strength of the test pieces is determined with reference to GB/T13525-1992. The test results are shown in Table 1.
And (3) aging resistance test: and (3) placing the sample piece into an aging box at 100 ℃ for aging simulation, wherein the aging time is 60 days, taking out the sample piece, and testing the aging tensile strength and the aging impact strength of the sample piece. The test results are shown in Table 1.
TABLE 1
| Tensile strength MPa | Impact Strength (KJ/m)2） | Aged tensile strength MPa | Impact Strength (KJ/m)2） | |
| Example 1 | 32.4 | 24.0 | 24.1 | 18.1 |
| Example 2 | 31.9 | 23.1 | 23.8 | 17.5 |
| Example 3 | 33.0 | 24.6 | 24.9 | 18.7 |
| Example 4 | 33.2 | 27.1 | 25.2 | 21.4 |
| Example 5 | 32.6 | 26.8 | 28.1 | 23.7 |
| Example 6 | 33.2 | 26.1 | 26.6 | 22.1 |
| Comparative example 1 | 21.2 | 14.7 | 9.8 | 4.8 |
| Comparative example 2 | 21.0 | 14.6 | 9.7 | 4.7 |
| Comparative example 3 | 21.4 | 15.3 | 12.6 | 8.2 |
| Comparative example 4 | 18.1 | 19.1 | 8.2 | 9.1 |
Combining example 3 and example 4 with table 1, it can be seen that the equivalent substitution of the polymer of dipentaerythritol and sebacic acid with sebacic acid at pH 2.8 significantly improves the impact strength of the test pieces, i.e. the toughness of the test pieces. The reason is that under the strong acid condition, the dipentaerythritol and the sebacic acid are easy to generate a polymer with a chain structure during the esterification polymerization reaction, so that the dipentaerythritol, the sebacic acid and the sebacic acid are difficult to produce a net structure, and the polymer of the dipentaerythritol and the sebacic acid with the chain structure can ensure that the sample piece has better mechanical strength and better toughness.
It can be seen by combining example 4 and example 5 and table 1 that the addition of the heptadecenoic triglyceride has the effect of improving the aging resistance of the sample piece, and the heptadecenoic triglyceride has the performance of inhibiting the decomposition of the polymer of dipentaerythritol and sebacic acid, so that the polymer of dipentaerythritol and sebacic acid still has a good degree of polymerization after an aging test, and the sample piece still has good tensile strength and impact strength after aging.
Combining example 6 and example 5 with table 1, it can be seen that the addition of sodium polyphosphate has the effect of improving the high temperature stability of PVC, probably because sodium polyphosphate catalyzes the rate of absorption of hydrogen chloride by calcium stearate and zinc stearate, thereby improving the stability of PVC.
Combining example 4 and comparative example 1 with table 1, it can be seen that the addition of a polymer of pentaerythritol and sebacic acid has the effects of absorbing chloride ions, preventing PVC from decomposition, and improving PVC stability. And at the same time, the addition of the compound can be improved. Meanwhile, the macromolecular structure of the polymer of pentaerythritol and sebacic acid is distributed in a PVC system, so that the finishing compactness of the PVC system is improved, the tensile strength of the sample piece is improved, the plasticizing effect is achieved, and the toughness of the sample piece is improved.
In combination with example 5 and comparative examples 1 and 2 and in combination with table 1, it can be seen that the heptadecenoic acid triglyceride has no positive effect on the stability of PVC and has no significant effect on the aging resistance of PVC.
Combining example 3 and comparative example 3 with table 1, it can be seen that dipentaerythritol can also absorb certain chloride ions and has a certain anti-aging effect, but the effect on the tensile strength and impact strength of the test piece after the dipentaerythritol is added is not obvious.
It can be seen from the combination of example 3 and comparative example 4 and table 1 that the long-chain molecular structure of sebacic acid has a certain improvement in toughness of the test piece, but does not have an anti-aging effect, and also has a certain negative effect on tensile strength of the test piece.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (6)
1. The utility model provides a high temperature and high pressure resistant hose, includes skin, second winding layer, intermediate level, first winding layer, inlayer from outer to interior in proper order, its characterized in that, the inlayer is made by the raw materials that contain following parts by weight:
90-110 parts of PVC;
50-60 parts of a plasticizer;
18-22 parts of a polymer of dipentaerythritol and sebacic acid;
1-3 parts of a high-temperature resistant stabilizer, wherein the high-temperature resistant stabilizer comprises the following components in parts by weight: 37 parts of hydrotalcite, 20 parts of zinc stearate, 10 parts of calcium stearate, 5 parts of 1076 antioxidant, 5 parts of 168 antioxidant, 15 parts of heavy calcium carbonate and 12 parts of sodium polyphosphate;
18-22 parts of tackifying resin;
0.1-0.3 part of lubricant;
0.2-0.6 part of heptadecenoic triglyceride;
the outer layer is prepared from the following raw materials in parts by weight:
90-110 parts of PVC;
50-60 parts of a plasticizer;
18-22 parts of a polymer of dipentaerythritol and sebacic acid;
1-3 parts of a high-temperature resistant stabilizer;
18-22 parts of tackifying resin;
0.1-0.3 part of lubricant;
0.2-0.6 part of heptadecenoic triglyceride;
2-4 parts of titanium dioxide.
2. A high temperature and high pressure resistant hose according to claim 1, wherein: the preparation method of the polymer of dipentaerythritol and sebacic acid is as follows:
weighing 8-12 parts of biquaternary tetrol and 16-24 parts of sebacic acid according to molar parts, dissolving in 500ml of 400-fluid water, adding 2-4ml of 50-60wt% sulfuric acid, stirring and mixing uniformly to obtain a mixture, heating and refluxing for 24-36h, cooling, taking out, washing with petroleum ether, and drying at low pressure to obtain the polymer of dipentaerythritol and sebacic acid.
3. A high temperature and high pressure resistant hose according to claim 2, wherein: the pH of the mixture was adjusted to less than 3 with phosphoric acid.
4. A high temperature and high pressure resistant hose according to claim 1, wherein: the first winding layer and the second winding layer are made of polyester yarns.
5. A high temperature and high pressure resistant hose according to claim 1, wherein: the tackifying resin is phenolic resin.
6. A process for producing a high temperature and high pressure resistant hose according to any one of claims 1 to 5, comprising the steps of:
1. preparation of the first material:
weighing PVC, a plasticizer, a polymer of dipentaerythritol and sebacic acid, a high-temperature resistant stabilizer, tackifying resin, a lubricant and heptadecenoic acid triglyceride according to the required weight parts of the formula, uniformly stirring and mixing at the temperature of 140-;
2. preparation of the second material:
weighing PVC, a plasticizer, a polymer of dipentaerythritol and sebacic acid, a high-temperature resistant stabilizer, tackifying resin, a lubricant, heptadecenoic acid triglyceride and titanium dioxide according to the required weight parts of the formula, uniformly stirring and mixing at 150 ℃, and pre-plasticizing at 150-170 ℃ to form particles to obtain a second material;
3. extrusion molding of the inner layer: extruding and cooling the first material at 165-175 ℃ to obtain an inner layer;
4. preparation of the first winding layer: winding polyester yarns on the outer wall of the inner layer to obtain a first winding layer;
5. and (3) extrusion molding of the middle layer: extruding the second material on the outer wall of the first winding layer at 185-195 ℃ to prepare an intermediate layer;
6. preparation of the second winding layer: winding the polyester yarns on the outer wall of the middle layer to obtain a second winding layer;
7. and (3) extrusion molding of the outer layer: and extruding the second material out of the outer wall of the second winding layer at 185-195 ℃, and cooling to obtain an outer layer, thereby obtaining the high-temperature and high-pressure resistant hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110077140.9A CN112693198B (en) | 2021-01-20 | 2021-01-20 | High-temperature-resistant high-pressure-resistant hose and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110077140.9A CN112693198B (en) | 2021-01-20 | 2021-01-20 | High-temperature-resistant high-pressure-resistant hose and production process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112693198A CN112693198A (en) | 2021-04-23 |
| CN112693198B true CN112693198B (en) | 2022-04-12 |
Family
ID=75515850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110077140.9A Active CN112693198B (en) | 2021-01-20 | 2021-01-20 | High-temperature-resistant high-pressure-resistant hose and production process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112693198B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03143943A (en) * | 1989-10-30 | 1991-06-19 | Mitsubishi Kasei Vinyl Co | Plasticized vinyl chloride resin composition |
| JPH09143325A (en) * | 1995-11-24 | 1997-06-03 | Riken Vitamin Co Ltd | Lubricant composition for polyvinyl chloride |
| WO2003035393A1 (en) * | 2001-10-25 | 2003-05-01 | Cognis Corporation | Pvc/wood fiber composite |
| CN101717526A (en) * | 2009-10-30 | 2010-06-02 | 华南理工大学 | Method for preparing low melting point eutectic PVC heat stabilizer |
| CN103524946A (en) * | 2013-10-17 | 2014-01-22 | 宁波一舟塑胶有限公司 | High-temperature-resistant thermoplastic polyvinyl chloride cable material and preparation method thereof |
| CN104387616A (en) * | 2014-12-16 | 2015-03-04 | 天津中财型材有限责任公司 | Ca/Zn composite stabilizer, preparation method thereof and environment-friendly profile |
| CN109535591A (en) * | 2018-11-14 | 2019-03-29 | 东莞欧德雅装饰材料有限公司 | A kind of highly elastic polyvinyl chloride composite material and preparation method and application |
| CN110446750A (en) * | 2017-03-21 | 2019-11-12 | 日本瑞翁株式会社 | Vinyl chloride resin composition, vinyl chloride resin formed body and laminated body |
| CN111169121A (en) * | 2020-01-11 | 2020-05-19 | 浙江新洁新材料科技有限公司 | Rubber-like PVC hose and production method thereof |
-
2021
- 2021-01-20 CN CN202110077140.9A patent/CN112693198B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03143943A (en) * | 1989-10-30 | 1991-06-19 | Mitsubishi Kasei Vinyl Co | Plasticized vinyl chloride resin composition |
| JPH09143325A (en) * | 1995-11-24 | 1997-06-03 | Riken Vitamin Co Ltd | Lubricant composition for polyvinyl chloride |
| WO2003035393A1 (en) * | 2001-10-25 | 2003-05-01 | Cognis Corporation | Pvc/wood fiber composite |
| CN101717526A (en) * | 2009-10-30 | 2010-06-02 | 华南理工大学 | Method for preparing low melting point eutectic PVC heat stabilizer |
| CN103524946A (en) * | 2013-10-17 | 2014-01-22 | 宁波一舟塑胶有限公司 | High-temperature-resistant thermoplastic polyvinyl chloride cable material and preparation method thereof |
| CN104387616A (en) * | 2014-12-16 | 2015-03-04 | 天津中财型材有限责任公司 | Ca/Zn composite stabilizer, preparation method thereof and environment-friendly profile |
| CN110446750A (en) * | 2017-03-21 | 2019-11-12 | 日本瑞翁株式会社 | Vinyl chloride resin composition, vinyl chloride resin formed body and laminated body |
| CN109535591A (en) * | 2018-11-14 | 2019-03-29 | 东莞欧德雅装饰材料有限公司 | A kind of highly elastic polyvinyl chloride composite material and preparation method and application |
| CN111169121A (en) * | 2020-01-11 | 2020-05-19 | 浙江新洁新材料科技有限公司 | Rubber-like PVC hose and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112693198A (en) | 2021-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110105544B (en) | Preparation method of self-repairing material based on double repairing mechanisms | |
| TWI567102B (en) | Polybutylene terephthalate resin composition and molded body | |
| CN101709120B (en) | Rubber additive and ethylene propylene diene monomer containing same | |
| CN112480351A (en) | Organic/inorganic compound flame-retardant rigid polyurethane foam and preparation method thereof | |
| CN112693198B (en) | High-temperature-resistant high-pressure-resistant hose and production process thereof | |
| CN114507406A (en) | Flame-retardant biodegradable PVA film | |
| CN113527813A (en) | Preparation process of polypropylene modified plastic | |
| CN106220835A (en) | Low terminal carboxy content polyester of organic amine end-blocking and preparation method thereof | |
| CN110183629B (en) | Hydrolysis-resistant polyester composition and preparation method and application of composition solution | |
| CN112358638A (en) | High-strength degradable environment-friendly plastic and preparation method thereof | |
| KR101721512B1 (en) | Decrosslinked polyolefine resin and resin composition comprising the same | |
| CN104004167A (en) | Novel polyester and preparation method thereof | |
| CN113999522A (en) | Polyamide composite material and preparation method and application thereof | |
| CN112457526A (en) | Melon ring inclusion-based low-smoke antimony-free flame retardant and application thereof | |
| CN106366412A (en) | Hard oxidation-resistant polyethylene pipe material and preparation method thereof | |
| TWI526526B (en) | A method for producing a flame retardant polyester elastomer material | |
| CN114213642B (en) | High-temperature-resistant high-strength PET (polyethylene terephthalate) foaming material as well as preparation method and application thereof | |
| CN113524834B (en) | Photodegradable plastic and preparation method thereof | |
| CN114106479B (en) | High-performance cable material for vehicles and preparation method thereof | |
| CN104292716B (en) | Plasticising toughened polyethylene composition and preparation method thereof | |
| CN114957634B (en) | Degradable polyester rubber and preparation method and application thereof | |
| CN115819741B (en) | Corrosion-resistant high-strength well lid resin for gas station and preparation method thereof | |
| KR102330524B1 (en) | Biodegradable polymer composite manufactured using surface-modified inorganic material | |
| CN114990925B (en) | Preparation method of heat-resistant auxiliary agent | |
| CN118006059A (en) | Oxidation-resistant seven-hole plum blossom honeycomb tube 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 |