CN104530589A - Fiber-reinforced high-impact PVC-U pipe and preparation method thereof - Google Patents
Fiber-reinforced high-impact PVC-U pipe and preparation method thereof Download PDFInfo
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
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- 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
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- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
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- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2427/06—Homopolymers or copolymers of vinyl chloride
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- C08L2205/00—Polymer mixtures characterised by other features
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- C08L2205/16—Fibres; Fibrils
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Abstract
The invention discloses a fiber-reinforced high-impact PVC-U pipe and a preparation method thereof. The fiber-reinforced high-impact PVC-U pipe is prepared through the steps of firstly, weighting the following raw materials in parts: 50 parts of PVC resin, 1-2 parts of a calcium zinc stabilizer, 5-20 parts of light calcium carbonate, 0.2-0.6 part of a stearic acid, 0.4-1.2 parts of PE wax, 0.5-1.5 parts of an ACR anti-impact agent, 0.4-1 part of chlorinated polyethylene, and 10-25 parts of chopped fiber modified by a coupling agent; uniformly mixing the raw materials above, and preparing the obtained mixture into a fiber reinforced PVC masterbatch on a two-roll plasticator; and adding the masterbatch into a PVC-U pipe formula, and preparing a PVC-U pipe according to a general method. The properties such as impact strength, hydrostatic strength and the like of a pipe product produced by using the method disclosed according to the invention are significantly improved; and the price of short cut fiber is lower than that of PVC resin, and the addition of the short cut fiber can appropriately reduce the content of PVC resin, i.e. the raw material cost of pipes is reduced, and the market competitiveness of products is improved.
Description
Technical field
The invention belongs to PVC-U tubing production field, particularly relate to a kind of by fibre-reinforced high-impact PVC-U tubing and preparation method thereof.
Background technology
Rigid polyvinyl chloride PVC (PVC-U tubing) is conventional water transferring line, its major ingredient is polyvinyl chloride, add the auxiliary material such as softening agent, antiaging agent in addition to increase the performances such as its thermotolerance, toughness, ductility, hydrostatic strength, because its tensile strength, compressive strength, flexural strength, the performance such as heat insulation are all better, and price is also cheaper, also there is light weight, bright and clean, attractive in appearance, water resistance is little, assembly is flexible, time saving and energy saving, acidproof, alkaline-resisting, erosion resistance, intensity advantages of higher are installed, receive the favor of users.
But in actual use, Rigid PVC Pipe usually there will be the phenomenon that hydrostatic test and falling weight impact test can not be simultaneously up to standard.The PVC that most enterprises is produced or the qualified and drop impact performance inconsistency lattice of pressure-bearing, or drop impact performance is qualified and load performance is defective.There is " booster " phenomenon in the defective PVC used in many water-saving engineerings that causes of these two indexs due to Rigid PVC Pipe.Occur breaking owing to being subject to the scraped finish of stone sand grains in the defective process that must cause tubing in the process of carrying or to install of the drop impact of PVC, hydrostatic performance inconsistency lattice cause PVC to be broken because meeting hydraulic pressure when water flowing.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of by fibre-reinforced high impact PVC pipe, and the hydrostatic test of product and falling weight impact test can be simultaneously up to standard, and have cheap cost.
Another technical problem to be solved by this invention is to provide the preparation method of this PVC.
In order to realize above-mentioned technical purpose, the invention provides following technical scheme:
First fiber reinforcement PVC masterbatch is prepared, it is characterized in that: it is made up of the raw material of following weight parts: polyvinyl chloride resin 50 parts, calcium zinc stabilizer 1 ~ 2 part, light calcium carbonate 5 ~ 20 parts, stearic acid 0.2 ~ 0.6 part, 0.4 ~ 1.2 part, PE wax, ACR anti-impact agent 0.5 ~ 1.5 part, chlorinatedpolyethylene 0.4 ~ 1 part, through coupling agent modified chopped strand 10 ~ 25 parts.
Described polyvinyl chloride resin is SG-5 type.
Described calcium zinc stabilizer is the solid calcium zinc stabilizer of hydrotalcite system or system of zeolites.
The fineness requirement of described light calcium carbonate is greater than 400 orders.
Described coupling agent is methoxy-type silane coupling agent, carries out surface modification after itself and methyl alcohol being prepared the solution of 1:5 ~ 20 during use to chopped strand.
Described chopped strand length is glass fibre or the vegetable fibre of 5 ~ 20mm.
The preparation method of fiber reinforcement PVC masterbatch described above, comprises the steps:
(1) in order to make fiber and resin matrix have good consistency, modification need be carried out to chopped strand.First methoxy-type silane coupling agent and methyl alcohol are mixed with solution according to a certain percentage and are placed in watering can, take a certain amount of chopped strand, silane coupler solution from watering can with vaporific ejection, evenly be sprayed onto chopped strand surface, ensure that chopped strand fully infiltrates, finally wetting fibre is placed in baking oven and dries and obtain coupling agent modified chopped glass fiber, baking oven requires to have gas barrier, and fiber is dried gas and needed to discharge in time;
(2) various raw material is proportionally weighed;
(3) stir in each component input mixer with the speed of 30 ~ 80 revs/min, obtain cotton-shaped compound, compound is plasticated on twin-roll plastic mixing mill, the temperature of twin-roll plastic mixing mill preliminary roller is set as 150 ~ 200 DEG C, the temperature of rear roller is set as 120 ~ 180 DEG C, by adjusting two roller spacing and rotating speed, obtains discontinuous laminar fiber reinforcement PVC masterbatch, the specific requirement of masterbatch is: resin tentatively plastifies, and fiber is dispersed in masterbatch, nothing is obviously reunited.
Fiber reinforcement high-impact PVC-U tubing, the weight part of its constitutive material is: polyvinyl chloride resin 100 parts, chopped strand Reinforced PVC masterbatch 25 ~ 35 parts, calcium zinc stabilizer 1 ~ 3 part, light calcium carbonate 10 ~ 40 parts, stearic acid 0.5 ~ 1 part, 1 ~ 2 part, PE wax, above each component characteristics is identical with component characteristics in above-mentioned chopped strand Reinforced PVC masterbatch.
The preparation method of above-mentioned fiber reinforcement PVC-U tubing, comprises the steps:
(1) various raw material is weighed by by proportioning;
(2) stir in each component input high-speed mixer with the speed of 100 ~ 120 revs/min, obtain compound, setting barrel heat temperature also starts heating, when described mixture temperature reaches 85 ~ 95 DEG C, put into the cold mixed stirrer of low speed with the cold mixed stirring of the speed of 20 ~ 40 revs/min, when the temperature of compound reaches 35 ~ 45 DEG C, discharging, and drop in screw extruder, it is 150 ~ 200 DEG C in barrel heat temperature, die temperature is 150 ~ 200 DEG C, screw speed is 5 ~ 30 revs/min, reinforced rotating speed is under the condition of 5 ~ 50 revs/min, carry out successively according to a conventional method extruding machine-shaping, vacuum formalizes, cooling, traction, last be cooled to room temperature further after cut off according to required length the line pipe material enlarging and get final product of going forward side by side.
The present invention has following beneficial effect:
(1) chopped strand is made fiber reinforcement PVC masterbatch and is joined in PVC by the present invention, and the shock strength of the tubing obviously strengthened and hydrostatic strength, improve the over-all properties of tubing.
(2) chopped strand price is lower than polyvinyl chloride resin price, adding of chopped strand, suitably can reduce the content of polyvinyl chloride resin, namely reduce the raw materials cost of tubing, the market competitiveness of improving product.
Embodiment
The present invention is further described in conjunction with the embodiments:
First fiber reinforcement PVC masterbatch is prepared according to following steps:
(1) 200 grams of KH-550 type silane coupling agents are become solution with methyl alcohol according to the proportions of 1:12, be placed in watering can, taking 30 kilograms of length is that the short of 5 ~ 8mm cuts bamboo fibers, the 2600 grams of silane coupler solution prepared from watering can with vaporific ejection, evenly be sprayed onto chopped strand surface, ensure that chopped strand fully infiltrates, finally wetting fibre is placed in baking oven and dries and obtain coupling agent modified chopped glass fiber;
(2) SG-5 type polyvinyl chloride resin 50 kilograms is taken, hydrotalcite system calcium zinc stabilizer 1.5 kilograms, 500 order light calcium carbonates 15 kilograms, stearic acid 0.5 kilogram, 0.6 kilogram, PE wax, ACR anti-impact agent 1 kilogram, chlorinatedpolyethylene 0.5 kilogram, through coupling agent modified chopped strand 22 kilograms.
(3) stir in each component input mixer with the speed of 50 revs/min, obtain cotton-shaped compound, compound is plasticated on twin-roll plastic mixing mill, the temperature of twin-roll plastic mixing mill preliminary roller is set as 180 DEG C, the temperature of rear roller is set as 160 DEG C, by adjusting two roller spacing and rotating speed, obtain discontinuous laminar fiber reinforcement PVC masterbatch.
Adopt above-mentioned fiberoptic fiber Reinforced PVC masterbatch as raw material production fiber reinforcement high-impact PVC-U tubing below.
Embodiment one
(1) SG-5 type polyvinyl chloride resin double centner, chopped strand Reinforced PVC masterbatch 30 kilograms is taken, hydrotalcite system calcium zinc stabilizer 2 kilograms, 500 order light calcium carbonates 20 parts, stearic acid 0.5 kilogram, 1 kilogram, PE wax.
(2) stir in each component input high-speed mixer with the speed of 120 revs/min, obtain compound, setting barrel heat temperature also starts heating, when described mixture temperature reaches 90 DEG C, put into the cold mixed stirrer of low speed with the cold mixed stirring of the speed of 40 revs/min, when the temperature of compound reaches 35 DEG C, discharging, and drop in screw extruder, it is 175 DEG C in barrel heat temperature, die temperature is 165 DEG C, screw speed is 15 revs/min, reinforced rotating speed is under the condition of 30 revs/min, carry out successively according to a conventional method extruding machine-shaping, vacuum formalizes, cooling, traction, last be cooled to room temperature further after cut off according to required length the line pipe material enlarging and get final product of going forward side by side.
(3) formula of this example and technique is adopted to prepare external diameter 110mm, wall thickness 4.2mm, the tubing of nominal pressure PN1.0, according to " GB/T 10002.1-2006 feeds water with rigid polyvinyl chloride (PVC-U) tubing " and " GB/T 6111-2003 fluid conveying thermoplastic plastic pipe internal pressure-resistant test method " at 20 DEG C of constant temperature, constant humidity, its internal pressure-resistant performance is detected under the constant-pressure conditions of 3335KPa, according to " GB/T 10002.1-2006 feedwater rigid polyvinyl chloride (PVC-U) tubing " and " rotational method of GB/T14152-2001 thermoplastic plastic pipe resistance to outer impact property test method hour hands ", its shock resistance is detected for carrying out drop weight test under (20 ± 5) DEG C condition in envrionment temperature, logging test results.
Embodiment two
(1) SG-5 type polyvinyl chloride resin double centner, chopped strand Reinforced PVC masterbatch 20 kilograms is taken, hydrotalcite system calcium zinc stabilizer 2.5 kilograms, 500 order light calcium carbonates 35 parts, stearic acid 1 kilogram, 2 kilograms, PE wax.
(2) stir in each component input high-speed mixer with the speed of 120 revs/min, obtain compound, setting barrel heat temperature also starts heating, when described mixture temperature reaches 90 DEG C, put into the cold mixed stirrer of low speed with the cold mixed stirring of the speed of 40 revs/min, when the temperature of compound reaches 35 DEG C, discharging, and drop in screw extruder, it is 170 DEG C in barrel heat temperature, die temperature is 160 DEG C, screw speed is 12 revs/min, reinforced rotating speed is under the condition of 20 revs/min, carry out successively according to a conventional method extruding machine-shaping, vacuum formalizes, cooling, traction, last be cooled to room temperature further after cut off according to required length the line pipe material enlarging and get final product of going forward side by side.
(3) formula of this example and technique is adopted to prepare external diameter 110mm, wall thickness 4.2mm, the tubing of nominal pressure PN1.0, according to " GB/T 10002.1-2006 feeds water with rigid polyvinyl chloride (PVC-U) tubing " and " GB/T 6111-2003 fluid conveying thermoplastic plastic pipe internal pressure-resistant test method " at 20 DEG C of constant temperature, constant humidity, its internal pressure-resistant performance is detected under the constant-pressure conditions of 3335KPa, according to " GB/T 10002.1-2006 feedwater rigid polyvinyl chloride (PVC-U) tubing " and " rotational method of GB/T14152-2001 thermoplastic plastic pipe resistance to outer impact property test method hour hands ", its shock resistance is detected for carrying out drop weight test under (20 ± 5) DEG C condition in envrionment temperature, logging test results.
Table 1. test-results
| Hydrostatic strength (MPa) | Tensile strength (MPa) | Elongation at break (%) | Shock strength (KJ/m 2) | |
| Common tubing | 3.5 | 41.3 | 118.6 | 58.55 |
| Example one | 4.1 | 54.2 | 143.5 | 79.23 |
| Example two | 3.9 | 50.8 | 138.9 | 76.31 |
Known by above table data, add the more common commercially available tubing of performance such as the PVC-U tubing hydrostatic strength of fiber reinforcement polyvinyl chloride resin masterbatch, tensile strength, elongation at break and shock strength and obtain General Promotion, and fiber reinforcement masterbatch addition is higher, performance boost is more obvious.
Be only several specific embodiments of the application above, but the application is not limited thereto, any change without essence innovation, all should drop in the protection domain of the application.
Claims (6)
1. the invention discloses a kind of preparation method of fiber reinforcement high-impact PVC-U tubing, it is characterized in that preparing chopped strand Reinforced PVC masterbatch adds in PVC-U tubing, the PVC-U tubing of preparation has higher hydrostatic strength and resistance to impact shock.
2. chopped strand Reinforced PVC masterbatch according to claim 1, it is characterized in that, it is made up of the raw material of following weight parts: polyvinyl chloride resin 50 parts, calcium zinc stabilizer 1 ~ 2 part, light calcium carbonate 5 ~ 20 parts, stearic acid 0.2 ~ 0.6 part, 0.4 ~ 1.2 part, PE wax, ACR anti-impact agent 0.5 ~ 1.5 part, chlorinatedpolyethylene 0.4 ~ 1 part, through coupling agent modified chopped strand 10 ~ 25 parts;
Described polyvinyl chloride resin is SG-5 type;
Described calcium zinc stabilizer is the solid calcium zinc stabilizer of hydrotalcite system or system of zeolites;
The fineness requirement of described light calcium carbonate is greater than 400 orders;
Described coupling agent is methoxy-type silane coupling agent, carries out surface modification after itself and methyl alcohol being prepared the solution of 1:5 ~ 20 during use to chopped strand;
Described chopped strand length is glass fibre or the vegetable fibre of 5 ~ 20mm.
3. the preparation method of chopped strand Reinforced PVC masterbatch according to claim 1, comprises the steps:
(1) first methoxy-type silane coupling agent and methyl alcohol are mixed with solution according to a certain percentage and are placed in watering can, take a certain amount of chopped strand, silane coupler solution from watering can with vaporific ejection, evenly be sprayed onto chopped strand surface, ensure that chopped strand fully infiltrates, finally wetting fibre is placed in baking oven and dries and obtain coupling agent modified chopped glass fiber;
(2) various raw material is proportionally weighed;
(3) stir in each component input mixer with the speed of 30 ~ 80 revs/min, obtain cotton-shaped compound, compound is plasticated on twin-roll plastic mixing mill, the temperature of twin-roll plastic mixing mill preliminary roller is set as 150 ~ 200 DEG C, the temperature of rear roller is set as 120 ~ 180 DEG C, by adjusting two roller spacing and rotating speed, obtain discontinuous laminar fiber reinforcement PVC masterbatch.
4. fiber reinforcement high-impact PVC-U tubing according to claim 1, it is characterized in that, the weight part of constitutive material is: polyvinyl chloride resin 100 parts, chopped strand Reinforced PVC masterbatch 25 ~ 35 parts, calcium zinc stabilizer 1 ~ 3 part, light calcium carbonate 10 ~ 40 parts, stearic acid 0.5 ~ 1 part, 1 ~ 2 part, PE wax;
Described polyvinyl chloride resin is SG-5 type;
Described calcium zinc stabilizer is the solid calcium zinc stabilizer of hydrotalcite system or system of zeolites;
The fineness requirement of described light calcium carbonate is greater than 400 orders.
5. the preparation method of a kind of fiber reinforcement high-impact PVC-U tubing as claimed in claim 1, comprises the following steps:
(1) various raw material is weighed by by proportioning;
(2) stir in each component input high-speed mixer with the speed of 100 ~ 120 revs/min, obtain compound, setting barrel heat temperature also starts heating, when described mixture temperature reaches 85 ~ 95 DEG C, put into the cold mixed stirrer of low speed with the cold mixed stirring of the speed of 20 ~ 40 revs/min, when the temperature of compound reaches 35 ~ 45 DEG C, discharging, and drop in screw extruder, it is 150 ~ 200 DEG C in barrel heat temperature, die temperature is 150 ~ 200 DEG C, screw speed is 5 ~ 30 revs/min, reinforced rotating speed is under the condition of 5 ~ 50 revs/min, carry out successively according to a conventional method extruding machine-shaping, vacuum formalizes, cooling, traction, last be cooled to room temperature further after cut off according to required length the line pipe material enlarging and get final product of going forward side by side.
6. according to fiber reinforcement high-impact PVC-U tubing prepared by the method in claim 2-4 described in any one.
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| CN112795114A (en) * | 2021-01-07 | 2021-05-14 | 台州市天达源科技股份有限公司 | Continuous glass fiber reinforced PVC (polyvinyl chloride) hose and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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