CN107698896A - PVC U feed pipes and preparation method thereof - Google Patents
PVC U feed pipes and preparation method thereof Download PDFInfo
- Publication number
- CN107698896A CN107698896A CN201711044839.5A CN201711044839A CN107698896A CN 107698896 A CN107698896 A CN 107698896A CN 201711044839 A CN201711044839 A CN 201711044839A CN 107698896 A CN107698896 A CN 107698896A
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- China
- Prior art keywords
- pvc
- feed pipes
- organic group
- heat stabilizer
- preparation
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
Abstract
The invention belongs to technical field of polymer materials, and in particular to a kind of PVC U feed pipes and preparation method thereof.PVC U feed pipes are made up of the following raw material：Polyvinyl chloride resin, calcene, organic group heat stabilizer, lubricant, pigment, anti-impact modification agent, calcium stearate.Feed pipe prepared by the present invention is free of any heavy metal, does not produce any harm to human body and environment, while the tubing heat distortion temperature produced also increases, and that has expanded it uses field.
Description
Technical field
The invention belongs to technical field of polymer materials, and in particular to a kind of PVC-U feed pipes and preparation method thereof.
Background technology
Polyvinyl chloride (PVC) is one of five big general-purpose plastics, and its various products are widely used among we live, such as
Various PVC pipeline pipe fittings, packaging material, sheet material etc., but polyvinyl chloride resin and its product be there is the shortcomings that thermal degradation and aging, it
Processing temperature is minimum more than 160 DEG C, and decomposition temperature becomes product at 100 DEG C or so, therefore by polyvinyl chloride resin, just necessary
Heat stabilizer is added during PVC machine-shapings, to delay or prevent the thermal degradation of polyvinyl chloride resin.For a long time, for PVC
Heat stabilizer mainly have lead salts, metal soap, organic tin etc..Since the sixties in last century, due to occurring in the world
A series of heavy metal poisoning events, applying for lead (every) class stabilizer are restricted in Europe, and China was in revision feedwater in 2006
Also the use for forbidding lead salt stabilizer in feed pipe is clearly proposed in pipe standards；Organic tin heat stabilizer is relative to lead
Toxicity is much lower for salt stabilizer, but in its family, also has many members with toxic, such as butyl tin and pungent
Ji Xi etc., such feed pipe are contacted with water source for a long time, and secondary pollution can be caused to water source.
The content of the invention
It is an object of the invention to provide a kind of PVC-U feed pipes, without any heavy metal, human body and environment are not produced and appointed
What endangers, while the tubing heat distortion temperature produced also increases, and that has expanded it uses field.
PVC-U feed pipes of the present invention, are made up of the raw material of following parts by weight：
Described organic group heat stabilizer is uracil.
Described lubricant is PE waxes or microwax.
Described pigment is titanium dioxide.
Described anti-impact modification agent is anti-impact ACR or MBS.
The preparation method of PVC-U feed pipes of the present invention, step are as follows：
(1) dispensing batch mixing：By polyvinyl chloride resin, calcene, anti-impact modification agent, organic group heat stabilizer, pigment,
Lubricant and calcium stearate carry out dispensing, and obtaining being uniformly dispersed by stirring by above-mentioned material using high-speed mixer coordinates powder,
And raw material preplasticizing is made by frictional heat；
(2) extruder is extruded：The cooperation powder mixed feeds extruder from hopper, through screw compression, plasticizing process, material
High viscoelastic body is converted into, and is continuously extruded by mould；
(3) vacuum cooled is shaped：Enter from the heat pipe embryo of mould extrusion and cool down diameter-setting equipment, the Wen Duxiajiang of material, directly
Untill room temperature is dropped to, at this moment pipe embryo fixed sizing in the case where being always ensured that outer shape；
(4) draw：Molded tubing evenly moves forward in the presence of draw-gear；
(5) cut：Under the control of encoder pulse signal, the fixed length cutting of tubing is completed by cutting machine.
Organic group heat stabilizer is a kind of organic matter, and its molecular structure is all made up of four kinds of carbon, hydrogen, oxygen, nitrogen elements, made
With it is rear to environment without any pollution.
Hydroxyl and amino in organic group heat stabilizer molecular structure have very strong interior lubricity, match somebody with somebody for preferably adjustment
Square processing characteristics, therefore in the selection of lubricant, the higher lubricant of fusing point is selected as outer lubrication prescription.
Organic group heat stabilizer is used in combination with calcium stearate, and more preferable cooperative effect can be played in heat endurance.
There is certain toxicity this defect in the present invention, there is provided a kind of non-toxic organic base heat stabilizer for existing heat stabilizer
Mixed with other raw materials to prepare a kind of environment-friendly type PVC-U water-feeding pipes.High effect nontoxic organic group heat stabilizer is a kind of organic
Thing structure, any heavy metal is not contained, use it as the relatively sanitary environmental protection of water-feeding pipes of heat stabilizer production.
A kind of non-toxic organic base heat stabilizer uracil of the present invention, it is our four kinds of DNAs of human body
A kind of (i.e. RNA ribonucleic acid, it is a kind of inhereditary material of our human bodies) material therein, its chemical formula：C4H4N2O2,
Chemical name is：2,4 dihydroxy-pyrimidines, it has the distinctive base structure of RNA nucleic acid, can more preferably absorb polyvinyl chloride resin and process
During due to degraded caused hydrogen chloride, so as to play heat stabilization.Organic group heat stabilizer is used in combination with calcium stearate,
Cooperative effect can be produced well, organic group heat stabilizer is preferably played heat endurance.
The present invention compared with prior art, has the advantages that：
Using polyvinyl chloride resin as base-material, addition organic group heat stabilizer is blended to prepare a kind of ring the present invention with other additives
Guarantor's type feed pipe, feed pipe prepared by the present invention are free of any heavy metal, any harm are not produced to human body and environment, simultaneously raw
The tubing heat distortion temperature of production also increases, and that has expanded it uses field.
Brief description of the drawings
Fig. 1 is the process chart of the present invention.
Embodiment
The present invention is described further with reference to embodiments.
The assay method of sanitation performance is according to GB/T17219-1998《Drinking Water transmission ＆ distribution wetting system and protective materials
Safety evaluation standard》Measure.Thermal stability determination method is according to GB/T9349-2002《Polyvinyl chloride, related chloride homopolymer
Become color method with the measure of copolymer and its blend heat endurance》Defined method measure, the assay method of heat distortion temperature are pressed
According to GB/T8802-2001《The measure of thermoplastic plastic pipe, pipe fitting vicat softening temperature》Defined method detects.
Embodiment 1
The PVC in terms of mass fraction：100, active CaCO3：6, anti-impact modification agent anti-impact ACR：2, organic group heat stabilizer urine
Pyrimidine：2.8, lubricant PE waxes：1.5, calcium stearate：0.8, pigment titanium white：0.5, produce the feed pipes of PVC 20.Wholesomeness
Energy：Lead, Theil indices do not detect, heat distortion temperature：85 DEG C, coordinate powder heat-stable time：805 seconds.
Preparation method is as follows：
(1) dispensing batch mixing：By polyvinyl chloride resin, calcene, anti-impact modification agent, organic group heat stabilizer, pigment,
Lubricant and calcium stearate carry out dispensing, and obtaining being uniformly dispersed by stirring by above-mentioned material using high-speed mixer coordinates powder,
And raw material preplasticizing is made by frictional heat；
(2) extruder is extruded：The cooperation powder mixed feeds extruder from hopper, through screw compression, plasticizing process, material
High viscoelastic body is converted into, and is continuously extruded by mould；
(3) vacuum cooled is shaped：Enter from the heat pipe embryo of mould extrusion and cool down diameter-setting equipment, the Wen Duxiajiang of material, directly
Untill room temperature is dropped to, at this moment pipe embryo fixed sizing in the case where being always ensured that outer shape；
(4) draw：Molded tubing evenly moves forward in the presence of draw-gear；
(5) cut：Under the control of encoder pulse signal, the fixed length cutting of tubing is completed by cutting machine.
Technological parameter：
Main frame electric current 43-48A, screw speed 24rpm, hauling speed 1.6m/min, main frame barrel zone temperature 1-4 areas：185
DEG C, 185 DEG C, 170 DEG C, 155 DEG C, 165 DEG C of merging core temperature, 205 DEG C of 1st area of mold temperature, 175 DEG C of 2nd area, 185,3 area, 4 areas 165
℃。
Embodiment 2
The PVC in terms of mass fraction：100, active CaCO3：6, anti-impact modification agent MBS：2, organic group heat stabilizer uracil：
1.2, lubricant PE waxes：1.5, calcium stearate：1.4, pigment titanium white：0.5, produce the feed pipes of PVC 20.Sanitation performance：Lead,
Theil indices do not detect, heat distortion temperature：81 DEG C, coordinate powder heat-stable time：609 seconds.Preparation method is the same as embodiment 1.
Technological parameter：
Main frame electric current 42-46A, screw speed 25rpm, hauling speed 1.65m/min, main frame barrel zone temperature 1-4 areas：185
DEG C, 185 DEG C, 170 DEG C, 165 DEG C, 165 DEG C of merging core temperature, 205 DEG C of 1st area of mold temperature, 175 DEG C of 2nd area, 185,3 area, 4 areas 165
℃。
Embodiment 3
The PVC in terms of mass fraction：100, active CaCO3：6, anti-impact modification agent anti-impact ACR：2, organic group heat stabilizer urine
Pyrimidine：2.2, lubricant microwax：1.5, calcium stearate：1.1, pigment titanium white：0.5, produce the feed pipes of PVC 20.Wholesomeness
Energy：Lead, Theil indices do not detect, heat distortion temperature：83.2 DEG C, coordinate powder heat-stable time：756 seconds.The same embodiment of preparation method
1。
Technological parameter：
Main frame electric current 43-46A, screw speed 23rpm, hauling speed 1.58m/min, main frame barrel zone temperature 1-4 areas：185
DEG C, 185 DEG C, 170 DEG C, 145 DEG C, 165 DEG C of merging core temperature, 205 DEG C of 1st area of mold temperature, 175 DEG C of 2nd area, 185,3 area, 4 areas 165
℃。
Comparative example 1
The PVC in terms of mass fraction：100, active CaCO3：6, anti-impact modification agent：2, organic group heat stabilizer：2.8, lubrication
Agent：1.5, produce the feed pipes of PVC 20.Sanitation performance：Lead, Theil indices do not detect, heat distortion temperature：80 DEG C, coordinate powder thermostabilization
Time：637 seconds.Preparation method is the same as embodiment 1.
Comparative example 2
The PVC in terms of mass fraction：100, active CaCO3：6, anti-impact modification agent：2, Lead salt thermal stabilizer：3.5, lubricant：
1.5, produce the feed pipes of PVC 20.Sanitation performance：Lead content is 1.2 × 10-2(standard setting is no more than 7 × 10 to mg/L- 4Mg/L), heat distortion temperature：80.5 DEG C, coordinate powder heat-stable time：526 seconds.Preparation method is the same as embodiment 1.
Comparative example 3
The PVC in terms of mass fraction：100, active CaCO3：6, anti-impact modification agent：2, butyl tin heat stabilizer：1.5, lubrication
Agent：1.5, produce the feed pipes of PVC 20.Sanitation performance：Theil indices are 3.3 × 10-3Mg/L (standard setting is no more than 9 ×
10-4Mg/L), heat distortion temperature：80.1 DEG C, coordinate powder heat-stable time：423 seconds.Preparation method is the same as embodiment 1.
It in summary it can be seen, the use of organic group heat stabilizer, effectively increase the sanitation performance of product, the thermal change of product
Shape temperature also increases, and when organic group heat stabilizer and calcium stearate and used time, can effectively improve organic group heat stabilizer
Heat endurance.
Claims (6)
1. a kind of PVC-U feed pipes, it is characterised in that be made up of the raw material of following parts by weight：
2. PVC-U feed pipes according to claim 1, it is characterised in that described organic group heat stabilizer is uracil.
3. PVC-U feed pipes according to claim 1, it is characterised in that described lubricant is PE waxes or microwax.
4. PVC-U feed pipes according to claim 1, it is characterised in that described pigment is titanium dioxide.
5. PVC-U feed pipes according to claim 1, it is characterised in that described anti-impact modification agent be anti-impact ACR or
MBS。
6. the preparation method of any described PVC-U feed pipes of a kind of claim 1-5, it is characterised in that step is as follows：
(1) dispensing batch mixing：By polyvinyl chloride resin, calcene, anti-impact modification agent, organic group heat stabilizer, pigment, lubrication
Agent and calcium stearate carry out dispensing, and obtaining being uniformly dispersed by stirring by above-mentioned material using high-speed mixer coordinates powder, and leads to
Crossing frictional heat makes raw material preplasticizing；
(2) extruder is extruded：The cooperation powder mixed feeds extruder from hopper, through screw compression, plasticizing process, material conversion
For high viscoelastic body, and continuously extruded by mould；
(3) vacuum cooled is shaped：Enter cooling diameter-setting equipment, the Wen Duxiajiang of material, until drop from the heat pipe embryo of mould extrusion
Untill room temperature, at this moment pipe embryo fixed sizing in the case where being always ensured that outer shape；
(4) draw：Molded tubing evenly moves forward in the presence of draw-gear；
(5) cut：Under the control of encoder pulse signal, the fixed length cutting of tubing is completed by cutting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044839.5A CN107698896A (en) | 2017-10-31 | 2017-10-31 | PVC U feed pipes and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044839.5A CN107698896A (en) | 2017-10-31 | 2017-10-31 | PVC U feed pipes and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107698896A true CN107698896A (en) | 2018-02-16 |
Family
ID=61177334
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711044839.5A Pending CN107698896A (en) | 2017-10-31 | 2017-10-31 | PVC U feed pipes and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014589A (en) * | 2018-03-15 | 2019-07-16 | 浙江申丰管业有限公司 | A kind of production technology of plastic tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451007A (en) * | 2007-11-29 | 2009-06-10 | 福建亚通新材料科技股份有限公司 | High impact polychloroethylene pressure tube |
| CN104479257A (en) * | 2014-12-31 | 2015-04-01 | 浙江工业大学 | Application of uracil compound as organic thermal stabilizer of transparent polyester product |
| CN104877252A (en) * | 2015-03-31 | 2015-09-02 | 杭州鸿雁管道系统科技有限公司 | Lead-free and low-toxicity polyvinyl chloride composite material and preparation method thereof |
| CN105255048A (en) * | 2015-10-30 | 2016-01-20 | 永高股份有限公司 | Preparation method of high-performance environment-friendly U-PVC (unplasticized-polyvinyl chloride) pipe |
-
2017
- 2017-10-31 CN CN201711044839.5A patent/CN107698896A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451007A (en) * | 2007-11-29 | 2009-06-10 | 福建亚通新材料科技股份有限公司 | High impact polychloroethylene pressure tube |
| CN104479257A (en) * | 2014-12-31 | 2015-04-01 | 浙江工业大学 | Application of uracil compound as organic thermal stabilizer of transparent polyester product |
| CN104877252A (en) * | 2015-03-31 | 2015-09-02 | 杭州鸿雁管道系统科技有限公司 | Lead-free and low-toxicity polyvinyl chloride composite material and preparation method thereof |
| CN105255048A (en) * | 2015-10-30 | 2016-01-20 | 永高股份有限公司 | Preparation method of high-performance environment-friendly U-PVC (unplasticized-polyvinyl chloride) pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110014589A (en) * | 2018-03-15 | 2019-07-16 | 浙江申丰管业有限公司 | A kind of production technology of plastic tube |
| CN110014589B (en) * | 2018-03-15 | 2021-04-30 | 浙江申丰管业有限公司 | Production process of plastic pipe |
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Application publication date: 20180216 |