CN109467820A - A kind of preparation method of chopped strand enhancing PPR pipe - Google Patents
A kind of preparation method of chopped strand enhancing PPR pipe Download PDFInfo
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- CN109467820A CN109467820A CN201811415696.9A CN201811415696A CN109467820A CN 109467820 A CN109467820 A CN 109467820A CN 201811415696 A CN201811415696 A CN 201811415696A CN 109467820 A CN109467820 A CN 109467820A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
- C08J5/08—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials glass fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/14—Copolymers of propene
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- 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
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- 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
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- 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
- C08K3/34—Silicon-containing compounds
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
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- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
Abstract
The invention discloses a kind of preparation methods of chopped strand enhancing PPR pipe, comprising the following steps: the preparation of raw material, the processing of chopped strand, mixing and pipe molding；The raw material include random copolymerization PPR, chopped strand, silane coupling agent, enough ethyl alcohol, wollastonite, nanometer calcium carbonate, lubricant, antioxidant, auxiliary antioxidant and nucleating agent TMB.The present invention is handled chopped strand with silane coupling agent, and chopped strand is modified, and silane coupling agent plays bridge beam action, improves the compatibility of chopped strand Yu random copolymerization PPR, is the breakthrough innovation of this field；By using plastic grain blender, raw material are uniformly mixed, ensure that the homogeneity of product properties；By being added to nanometer calcium carbonate and wollastonite from a wealth of sources, volume is increased, production cost is reduced；The resistance to ag(e)ing that PPR pipe is improved by addition antioxidant and auxiliary antioxidant, is conducive to extend service life.
Description
Technical field
The present invention relates to plastic conduit field, especially a kind of preparation method of chopped strand enhancing PPR pipe.
Background technique
Thermoplastic is due to easy to process, function admirable and lower-price characteristic, in automobile, machinery, electricity
The industries such as sub electrical, environmental protection are widely used.Most resins of the thermoplasticity pressure pipeline of manufacture are polychlorostyrene second
Alkene (PVC) resin, followed by polyethylene (PE), polybutene (PB), polypropylene (PP) and ABS etc..The performance of raw material determines
The performance of product, Pressurized Plastic Pipes must have sufficiently high receiving pressure capability and reasonable wall thickness, can just have sufficiently long
Service life, to guarantee good economic benefit.Raw materials for plastics production have the preferable growing ability for resisting rapid crack propagation crackle, can
To guarantee that sporadic catastrophic failure does not occur for Pressurized Plastic Pipes.The use of PP pipeline starts from the 1980s, main
By PP homopolymer (PPH), block copolymer (PPB) and atactic copolymerized polypropene (PPR) tube material.
PPR pipe material is random copolymerization made of being copolymerized as propylene and another olefinic monomer (or a variety of olefinic monomers)
Object, in olefinic monomer without alkene outside other functional groups.In recent years, PPR pipe dosage cumulative year after year, the Ministry of Construction, China it has been recommended that
Galvanized pipe is replaced using PPR pipe road, is used for indoor water supply and drainage pipeline.Currently, PPR pipe is in use, it is found that it still has one
A little problems, under hydrostatic load, with temperature, the variation of time, magnitude of load, brittle fracture or oxygen can occur for PPR pipe road
Change destruction etc..The essence of brittle break is stress cracking, and the growth rate in crack is very slow, referred to as slow crack growth (SCG)；
The growth rate in crack may also be quite fast, and moment cracking, referred to as rapid crack increase (RCG).Oxidative demage is due to tubing
After being oxidized, oxidative degradation is carried out by reactive mode is automatically speeded up, and the mechanical property of tubing is lost rapidly in a short time,
Eventually lead to mechanics of piping destruction.
After fiber and plastics are compound, the performance of plastics can be improved, while improving plastics performance, can also be dropped significantly
Low production cost.According to relevant report, fiber can play the role of heterogeneous nucleation agent in matrix resin, make molecular resin around fibre
Tie up surface crystallization.When composite material receives external impacts, stress can preferably pass to fiber, to play humidification.
Summary of the invention
In order to overcome in the prior art PPR pipe there are poor toughness, high production cost, non-resistance to oxidation the defects of, the present invention mentions
For a kind of preparation method of chopped strand enhancing PPR pipe.
The technical solution adopted by the present invention to solve the technical problems is: a kind of preparation side of chopped strand enhancing PPR pipe
Method, comprising the following steps:
Step 1: the preparation of raw material
1. raw material prepare
By weight prepare 70 ~ 100 parts of random copolymerization PPR, 10 ~ 30 parts of chopped strand, 0.15 ~ 0.45 part of silane coupling agent,
It is enough ethyl alcohol, 5 ~ 8 parts of wollastonite, 10 ~ 15 parts of nanometer calcium carbonate, 0.5 ~ 1.0 part of lubricant, 0.5 ~ 0.8 part of antioxidant, auxiliary
0.5 ~ 1.0 part of aid anti-oxidants, 0.2 ~ 0.4 part of nucleating agent TMB；
2. equipment: preparing supersonic wave cleaning machine, magnetic stirring apparatus, centrifuge, baking oven, plastic grain blender, twin-screw extrusion
Machine, shaping equipment, cooling trough, traction device, cutter device；
Step 2: the processing of chopped strand
1. the silane coupling agent of step steady is dissolved in dehydrated alcohol, be made into silane coupling agent volume fraction be 2.5% ~
Solution is put into supersonic wave cleaning machine and carries out ultrasound by 3% solution, and ultrasonic time is 50min ~ 60min；
2. the chopped strand of step steady is added in above-mentioned solution, the container of solution Yu chopped strand mixture will be filled
It is put into magnetic stirring apparatus, control reaction temperature is 40 ~ 50 DEG C, and the reaction time is 3 ~ 4h, and the solution after reaction is put into centrifugation
It is centrifuged in machine, obtains modified chopped strand；
3. modified chopped strand is put into drying in baking oven, controlling dry temperature is 50 ~ 80 DEG C, and drying time is for 24 hours；
Step 3: mixing
According to formula by load weighted random copolymerization PPR, modified chopped strand, wollastonite, nanometer calcium carbonate, lubricant, antioxygen
Agent, auxiliary antioxidant, nucleating agent are successively put into plastic grain blender, are uniformly mixed, are spare；
Step 4: pipe molding
The mixed material that step 3 is obtained pours into the hopper of double screw extruder, and mixed material enters machine through machine barrel feed inlet
In cylinder, with the rotation of screw rod, mixed material is pushed in front of machine barrel, is finally squeezed from the machine head port mould of double screw extruder
Out, PPR pipe base is obtained；PPR pipe base passes sequentially through shaping equipment sizing, and cooling trough is cooling, traction device traction, finally by
Cutter device is cut off by certain length, finally examines storage.
A kind of preparation method of above-mentioned chopped strand enhancing PPR pipe, the dosage of the silane coupling agent is chopped strand
The 1.5% of dosage.
A kind of preparation method of above-mentioned chopped strand enhancing PPR pipe, the silane coupling agent be KH560, KH570 or
One of A171.
A kind of preparation method of above-mentioned chopped strand enhancing PPR pipe, the chopped strand be glass fibre, boron fibre or
One of carbon fiber.
A kind of preparation method of above-mentioned chopped strand enhancing PPR pipe, the antioxidant is antioxidant 1010, the auxiliary
Antioxidant is the double lauryls of thio-2 acid.
A kind of preparation method of above-mentioned chopped strand enhancing PPR pipe, the lubricant is calcium stearate.
The present invention has the following advantages that and high-lighting effect compared with prior art:
The invention has the advantages that (1) present invention is handled chopped strand with silane coupling agent, modification process letter
It is single, it can be produced in batches, facilitate operation；(2) chopped strand is modified, and silane coupling agent plays bridge beam action, connects on one side
Chopped strand is connect, another side is connected to random copolymerization PPR, improves the compatibility of chopped strand Yu random copolymerization PPR, is this
The breakthrough innovation in field；(3) addition of chopped strand improves the intensity of PPR pipe；(4) it is stirred by using plastic grain
Raw material are uniformly mixed by machine, ensure that the homogeneity of product properties；(5) by being added to nanometer calcium carbonate from a wealth of sources
And wollastonite, volume is increased, production cost is reduced；(6) processing performance is improved by adding lubricant；It is antioxidant, auxiliary
Aid anti-oxidants improve the resistance to ag(e)ing of PPR pipe, are conducive to extend service life.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, With reference to embodiment to this
Invention elaborates.
[embodiment 1]
A kind of preparation method of chopped strand enhancing PPR pipe, comprising the following steps:
Step 1: the preparation of raw material
1. raw material prepare
Prepare 80 parts of random copolymerization PPR, 20 parts of chopped strand, 0.3 part of silane coupling agent, enough ethyl alcohol, silicon ash by weight
5 parts of stone, 10 parts of nanometer calcium carbonate, 0.5 part of lubricant, 0.5 part of antioxidant, 0.5 part of auxiliary antioxidant, nucleating agent TMB
0.2 part；
2. equipment: preparing supersonic wave cleaning machine, magnetic stirring apparatus, centrifuge, baking oven, plastic grain blender, twin-screw extrusion
Machine, shaping equipment, cooling trough, traction device, cutter device；
Step 2: the processing of chopped strand
1. the silane coupling agent of step steady is dissolved in dehydrated alcohol, the volume fraction for being made into silane coupling agent is 2.5%
Solution is put into supersonic wave cleaning machine and carries out ultrasound by solution, ultrasonic time 50minmin；
2. the chopped strand of step steady is added in above-mentioned solution, the container of solution Yu chopped strand mixture will be filled
Be put into magnetic stirring apparatus, control reaction temperature be 40 DEG C, reaction time 3h, by the solution after reaction be put into centrifuge from
The heart obtains modified chopped strand；
3. modified chopped strand is put into drying in baking oven, controlling dry temperature is 50 DEG C, and drying time is for 24 hours；
Step 3: mixing
According to formula by load weighted random copolymerization PPR, modified chopped strand, wollastonite, nanometer calcium carbonate, lubricant, antioxygen
Agent, auxiliary antioxidant, nucleating agent are successively put into plastic grain blender, are uniformly mixed, are spare；
Step 4: pipe molding
The mixed material that step 3 is obtained pours into the hopper of double screw extruder, and mixed material enters machine through machine barrel feed inlet
In cylinder, with the rotation of screw rod, mixed material is pushed in front of machine barrel, is finally squeezed from the machine head port mould of double screw extruder
Out, PPR pipe base is obtained；PPR pipe base passes sequentially through shaping equipment sizing, and cooling trough is cooling, traction device traction, finally by
Cutter device is cut off by certain length, finally examines storage.
Further, the silane coupling agent is KH560.
Further, the chopped strand is glass fibre.
Further, the antioxidant is antioxidant 1010, and the auxiliary antioxidant is the double lauryls of thio-2 acid.
Further, the lubricant is calcium stearate.
[embodiment 2]
A kind of preparation method of chopped strand enhancing PPR pipe, comprising the following steps:
Step 1: the preparation of raw material
1. raw material prepare
Prepare 90 parts of random copolymerization PPR, 10 parts of chopped strand, 0.15 part of silane coupling agent, enough ethyl alcohol, silicon by weight
8 parts of lime stone, 15 parts of nanometer calcium carbonate, 1.0 parts of lubricant, 0.8 part of antioxidant, 1.0 parts of auxiliary antioxidant, nucleating agent TMB
0.4 part；
2. equipment: preparing supersonic wave cleaning machine, magnetic stirring apparatus, centrifuge, baking oven, plastic grain blender, twin-screw extrusion
Machine, shaping equipment, cooling trough, traction device, cutter device；
Step 2: the processing of chopped strand
1. the silane coupling agent of step steady is dissolved in dehydrated alcohol, be made into silane coupling agent volume fraction be 3% it is molten
Solution is put into supersonic wave cleaning machine and carries out ultrasound by liquid, ultrasonic time 60min；
2. the chopped strand of step steady is added in above-mentioned solution, the container of solution Yu chopped strand mixture will be filled
Be put into magnetic stirring apparatus, control reaction temperature be 50 DEG C, reaction time 4h, by the solution after reaction be put into centrifuge from
The heart obtains modified chopped strand；
3. modified chopped strand is put into drying in baking oven, controlling dry temperature is 80 DEG C, and drying time is for 24 hours；
Step 3: mixing
According to formula by load weighted random copolymerization PPR, modified chopped strand, wollastonite, nanometer calcium carbonate, lubricant, antioxygen
Agent, auxiliary antioxidant, nucleating agent are successively put into plastic grain blender, are uniformly mixed, are spare；
Step 4: pipe molding
The mixed material that step 3 is obtained pours into the hopper of double screw extruder, and mixed material enters machine through machine barrel feed inlet
In cylinder, with the rotation of screw rod, mixed material is pushed in front of machine barrel, is finally squeezed from the machine head port mould of double screw extruder
Out, PPR pipe base is obtained；PPR pipe base passes sequentially through shaping equipment sizing, and cooling trough is cooling, traction device traction, finally by
Cutter device is cut off by certain length, finally examines storage.
Further, the silane coupling agent is KH570.
Further, the chopped strand is carbon fiber.
Further, the antioxidant is antioxidant 1010, and the auxiliary antioxidant is the double lauryls of thio-2 acid.
Further, the lubricant is calcium stearate.
Above embodiments are only exemplary embodiment of the present invention, are not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention
Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (6)
1. a kind of preparation method of chopped strand enhancing PPR pipe, which comprises the following steps:
Step 1: the preparation of raw material
1. raw material prepare
By weight prepare 70 ~ 100 parts of random copolymerization PPR, 10 ~ 30 parts of chopped strand, 0.15 ~ 0.45 part of silane coupling agent,
It is enough ethyl alcohol, 5 ~ 8 parts of wollastonite, 10 ~ 15 parts of nanometer calcium carbonate, 0.5 ~ 1.0 part of lubricant, 0.5 ~ 0.8 part of antioxidant, auxiliary
0.5 ~ 1.0 part and 0.2 ~ 0.4 part of nucleating agent TMB of aid anti-oxidants；
2. equipment: preparing supersonic wave cleaning machine, magnetic stirring apparatus, centrifuge, baking oven, plastic grain blender, twin-screw extrusion
Machine, shaping equipment, cooling trough, traction device, cutter device；
Step 2: the processing of chopped strand
1. the silane coupling agent of step steady is dissolved in dehydrated alcohol, be made into silane coupling agent volume fraction be 2.5% ~
Solution is put into supersonic wave cleaning machine and carries out ultrasound by 3% solution, and ultrasonic time is 50min ~ 60min；
2. the chopped strand of step steady is added in above-mentioned solution, the container of solution Yu chopped strand mixture will be filled
It is put into magnetic stirring apparatus, control reaction temperature is 40 ~ 50 DEG C, and the reaction time is 3 ~ 4h, and the solution after reaction is put into centrifugation
It is centrifuged in machine, obtains modified chopped strand；
3. modified chopped strand is put into drying in baking oven, controlling dry temperature is 50 ~ 80 DEG C, and drying time is for 24 hours；
Step 3: mixing
According to formula by load weighted random copolymerization PPR, modified chopped strand, wollastonite, nanometer calcium carbonate, lubricant, antioxygen
Agent, auxiliary antioxidant, nucleating agent are successively put into plastic grain blender, are uniformly mixed, are spare；
Step 4: pipe molding
The mixed material that step 3 is obtained pours into the hopper of double screw extruder, and mixed material enters machine through machine barrel feed inlet
In cylinder, with the rotation of screw rod, mixed material is pushed in front of machine barrel, is finally squeezed from the machine head port mould of double screw extruder
Out, PPR pipe base is obtained；PPR pipe base passes sequentially through shaping equipment sizing, and cooling trough is cooling, traction device traction, finally by
Cutter device is cut off by certain length, finally examines storage.
2. a kind of preparation method of chopped strand enhancing PPR pipe according to claim 1, which is characterized in that the silane
The dosage of coupling agent is the 1.5% of chopped strand dosage.
3. a kind of preparation method of chopped strand enhancing PPR pipe according to claim 1, which is characterized in that the silane
Coupling agent is one of KH560, KH570 or A171.
4. a kind of preparation method of chopped strand enhancing PPR pipe according to claim 1, which is characterized in that described to be chopped
Fiber is one of glass fibre, boron fibre or carbon fiber.
5. a kind of preparation method of chopped strand enhancing PPR pipe according to claim 1, which is characterized in that the antioxygen
Agent is antioxidant 1010, and the auxiliary antioxidant is the double lauryls of thio-2 acid.
6. a kind of preparation method of chopped strand enhancing PPR pipe according to claim 1, which is characterized in that the lubrication
Agent is calcium stearate.
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| CN201811415696.9A CN109467820A (en) | 2018-11-26 | 2018-11-26 | A kind of preparation method of chopped strand enhancing PPR pipe |
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| CN201811415696.9A CN109467820A (en) | 2018-11-26 | 2018-11-26 | A kind of preparation method of chopped strand enhancing PPR pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112454708A (en) * | 2020-10-22 | 2021-03-09 | 上海名辰模塑科技有限公司 | Preparation method of automobile bumper composite material |
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2018
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| CN1328084A (en) * | 2001-07-03 | 2001-12-26 | 成都市华硕实业有限公司 | Composite of microfibre, superfine powder and polypropylene |
| CN101735513A (en) * | 2009-12-29 | 2010-06-16 | 青岛国恩科技发展有限公司 | Weather-proof reinforced polypropylene composite material and manufacturing method thereof |
| CN108003475A (en) * | 2017-11-07 | 2018-05-08 | 日丰企业集团有限公司 | A kind of heat-resisting fiberglass reinforced polypropylene pipe and preparation method thereof |
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| Title |
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| 孙远镇: "短切纤维增强聚丙烯复合材料的制备和性能研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112454708A (en) * | 2020-10-22 | 2021-03-09 | 上海名辰模塑科技有限公司 | Preparation method of automobile bumper composite material |
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