CN101029160A - Formula for producing polyvinyl chloride double-wall corrugated pipe - Google Patents
Formula for producing polyvinyl chloride double-wall corrugated pipe Download PDFInfo
- Publication number
- CN101029160A CN101029160A CN 200610044461 CN200610044461A CN101029160A CN 101029160 A CN101029160 A CN 101029160A CN 200610044461 CN200610044461 CN 200610044461 CN 200610044461 A CN200610044461 A CN 200610044461A CN 101029160 A CN101029160 A CN 101029160A
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- rare earth
- pvc
- polyvinyl chloride
- thermal stabilizer
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Abstract
Formula for producing polyvinyl chloride double-wall bellow consists of hard polyvinyl chloride resin 100 proportion, rare-earth thermal stabilizer 3-6 proportion, lubricant 1.5-2.5 proportion, coupling agent 0.5-1.0 proportion, acrylic ester 2-4 proportion, modifier 6-10 proportion, rare-earth modified calcium carbonate 10-25 proportion. It substitutes lead stabilizer and can be used for blow-off pipe and environmental-protection construction.
Description
Technical field
The present invention relates to the prescription of a kind of production polyvinyl chloride (PVC) double-wall corrugated pipe, promptly a kind of prescription of producing polyvinyl-chloride drainage pipe with rare earth thermal stabilizer.
Background technology
Because traditional water shoot adopts cement pipe or reinforced concrete pipe mostly, they all are to belong to rigidity tubing, and work-ing life, its physical and mechanical property and chemical property were not so good as all that PVC is double-wall corrugated to be run well, belong to backward obsolete product generally about 15～20 years.The PVC double-wall corrugated pipe is a kind of ground draining structural walls pipeline that buries, because PVC double-wall corrugated pipe long service life, particularly be embedded in underground not easily broken, acid and alkali-resistance and certain temperature again, therefore be suitable for the laying of urban sewage pipe, so greatly developed and promoted the PVC double-wall corrugated pipe in recent years, but because the PVC double-wall corrugated pipe all is as drainage pipeline, almost all adopt lead stabilizer, in the secular use of PVC double-wall corrugated pipe, will constantly discharge lead, underground water is caused serious pollution, and then influence human health.
Summary of the invention
In order to solve the pollution of lead stabilizer to environment, the present invention adopts rare earth thermal stabilizer when producing the PVC double-wall corrugated pipe, and it is a kind of environmentally-friendly sanitary type stablizer.Rare earth is the distinctive resource of China, accounts for about 80% of global total amount, has made full use of the distinctive rare earth resources of China, meets national energy-conserving and environment-protective policy.The present invention is applied to rare earth thermal stabilizer to have replaced original lead stabilizer in the production of polyvinyl chloride (PVC) dual-wall ripple pipe, has satisfied the demand of public works draining blowdown pipeline network construction and construction of environmental protection.
The prescription of a kind of production polyvinyl chloride (PVC) dual-wall ripple pipe of the present invention is characterized in that:
It is as follows to fill a prescription: (kilogram)
Hard polyvinylchloride resin 100
Rare earth thermal stabilizer 3～6
Lubricant 1.5～2.5
Coupling agent 0.5～1.0
Acrylate 2～4
Properties-correcting agent 6～10
Rare earth modified carbonic acid calcium 10～25
Preferred plan of the present invention is that described rare earth thermal stabilizer contains lanthanum, cerium light rare earths (each 10%) and calcium, zinc (each 30%) and auxiliary material (20%) mixture; Described lubricant is stearic acid, paraffin, polyethylene wax (40: 30: 30) mixture or stearic acid, paraffin wax (50: 50) mixture; Described coupling agent is titanic acid ester or aluminic acid ester; Described properties-correcting agent is chlorinatedpolyethylene or methyl methacrylate-butadiene-styrene.The optimum weight of described rare earth thermal stabilizer is 4～5 kilograms.
The invention has the beneficial effects as follows that the rare earth thermal stabilizer that adopts environmentally-friendly sanitary adds the thermo-stabilizer in man-hour as polyvinyl chloride (PVC) dual-wall ripple pipe, product truly reaches " non-leadization ", environmentally-friendly sanitary; Rare earth thermal stabilizer has more excellent weather resistance than traditional lead salt stabilizer, and photooxidation aging property is good, and test-results shows: photooxidation aging property is better than lead salt system about 30%～50%; The application of rare earth modified carbonic acid calcium particle has improved product ring stiffness performance again when improving tubing impelling strength, reduced cost simultaneously.
Embodiment
The PVC double-wall corrugated pipe is to be main production raw material with the hard polyvinylchloride resin, the service performance of the material behavior according to hard polyvinylchloride resin---poor impact toughness and heavy caliber buried drain pipe, when formulating of recipe, consider to add toughness reinforcing calcium carbonate particles, the toughness of product is improved, also improves the ring stiffness of tubing simultaneously.
Property requirement according to the buried drain pipe road, the ring stiffness performance of tubing is its guardian technique index, through many-sided comparison and test, select SLK-1000 type or SLP-1000 type or the hard polyvinylchloride resin close as the production raw material with its index.
Material performance index:
| Title | SLK-1000 | SLP-1000 |
| Premium grads | Premium grads | |
| Mean polymerisation degree P | 1030±50 | 1030±50 |
| The gritty particle number, individual/100 grams≤ | 50 | 50 |
| Volatile matter, %≤ | 0.30 | 0.30 |
| Apparent density, g/ml | 0.53±0.03 | 0.51±0.03 |
| 0.35mm＜screenings, %≤ | 0.1 | 0.1 |
| "＜flake " number, individual/100cm 2≤ | 5 | 5 |
| Plasticizer absorption, g/100g 〉= | 17 | 20 |
| Original whiteness, % 〉= | 90 | 90 |
| Whiteness (160 ℃, 10mm), % 〉= | 76 | 74 |
Formula system mainly is made up of hard polyvinylchloride resin, rare earth thermal stabilizer, lubricant, coupling agent, properties-correcting agent, rare earth modified carbonic acid calcium etc.
The prescription of a kind of production polyvinyl chloride (PVC) dual-wall ripple pipe of the present invention, formulating of recipe is as follows: (kilogram)
Hard polyvinylchloride resin (SG-5 type) 100
Rare earth thermal stabilizer (containing lanthanum, cerium, calcium, zinc) 4.5
Lubricant (stearic acid, paraffin, polyethylene wax) 2.0
Coupling agent (titanic acid ester) 0.8
CALCIUM ACRYLATE 3.0
Properties-correcting agent (chlorinatedpolyethylene) 8.0
Rare earth modified carbonic acid calcium 20
Because the characteristic of hard polyvinylchloride resin itself, it is poor impact toughness at low temperatures, and add ordinary calcium carbonate and also can reduce its impact property, therefore must add plasticized modifier man-hour and use rare earth modified carbonic acid calcium particle to improve its shock strength adding, improve the ring stiffness performance of tubing simultaneously.
Technical process
1, operational path is as follows:
2, be described in detail as follows:
(1) batching:
PVC (SG-5 type), rare earth thermal stabilizer
Lubricant+properties-correcting agent+coupling agent+acrylate+rare earth modified carbonic acid calcium
(2) whipping step:
A, high-speed stirring
1) polyvinyl chloride resin is poured in the high-speed mixer, transferred to high gear after the low speed gear starting and stir, temperature is risen to stop about 60 ℃ stirring;
2) behind the input rare earth thermal stabilizer, continue to stop to stir when high-speed stirring is warming up to 90 ℃;
3) drop into lubricant, acrylate, properties-correcting agent, coupling agent and rare earth modified carbonic acid calcium, mix, when temperature rises to the temperature (being generally 125 ℃) of setting, stop to stir;
4) change stirring at low speed over to, and under stirring at low speed, material is entered in the low speed cold mixer of the logical water coolant that is rotating;
B, cold mixing
When the height that reaches setting when material stirs temperature, High-Speed Automaticly stop to change over to low speed, (being generally 45～55 ℃) stopped when the cooling material reached design temperature.
C, sieve
Remove impurity and some macrobead material in the material with the mesh screen of certain order number.
(3) forcing machine is extruded
The material that sieves drops into forcing machine and produces.
The processing parameter of extruding must be set and produce in strict accordance with the requirement of following technology table, to reach the quality product requirement.
Process parameter table
| Degree | Four districts | 185±10℃ | Four districts | 200±10℃ | |
| Five districts | 190±10℃ | Five districts | 205±10℃ | ||
| Six districts | 195±10℃ | Six districts | 210±10℃ | ||
| Seven districts | 210±10℃ | ||||
| Eight districts | 210±10℃ | ||||
| Each process control parameter of production line | |||||
| Engine speed | 30r/min | The main frame electric current | 60％ | ||
| Shaper speed | - | The feeding rotating speed | 30r/min | ||
Annotate: production technique is slightly adjusted according to the places of origin of raw materials, model, specification, color, climate change.The over-all properties of rare earth thermal stabilizer:
Rare earth thermal stabilizer has excellent thermal stability, no matter be that static state or dynamic thermal stability all are better than traditional lead salt stabilizer, is both PVC is had the promotion plastification, can obviously reduce the consumption of lubricant.Rare earth thermal stabilizer not only has excellent thermal stability; Also have unique coupling, increase-volume, internal plasticization, toughening effect; And excellent weather resisteant and characteristics such as electrical insulation capability, safety and sanitation.
As everyone knows, PVC easily decomposes under the processing temperature condition, must add stablizer and just can make its smooth processing.Industrial now widely used thermo-stabilizer mostly is metallic salts such as lead, cadmium, barium, tin, and cadmium, lead salt are poisoned bigger to human health.Though normally use and limit under the condition of addition general, in the course of processing or goods use, do not produce violent toxicity, but because heavy metal has biological accumulation under the long-term exposure condition, thereby can form threat, environment is polluted human health.
(1) rare earth thermal stabilizer Analysis on action mechanism
The degraded of PVC causes owing to taking off a HCl that at first taking off the HCl process is an autocatalysis process, can cause macromolecular chain interlock type branch and free HCl, polyenoid segment of the fast formation of newspaper, cause polymer degradation, promptly material color deepens and even coking, and mechanical mechanics property descends.Polyvinyl chloride resin takes off general explanation of HCl process free radical type and 2 kinds of mechanism of ionic.In the course of processing, O
2, O
3, katalysis such as OH, HCl and active metal ion quicken the decomposition of PVC, wherein HCl is one of principal element of accelerate decomposition.The PVC processing temperature is considerably beyond its decomposition temperature, so PVC must just have processing and use value by adding stablizer.The HCl that discharges during the PVC degraded has the intensive self-catalysis to taking off the HCl reaction.Generally believe that it carries out catalyzed reaction with ionic mechanism, [ClHCl] arranged
-Or Cl
-Participate in reaction process.And [ClHCl]
-Or Cl
-Can be used as the ligand that lone-pair electron are provided, with central ion be that the ionic linkage of rare earth element forms complex compound.Although this complex compound may be extremely unstable, as long as it can be with [ClHCl]
-Or Cl
-The HCl reaction is taken off in the catalysis that do not participate on every side that is adsorbed on rare earth ion, so PVC has just been played certain stabilization.Because the activation energy that PVC takes off HCl is 105～146J/mol in a vacuum, in oxygen, obviously reduce to 50～84J/mol again.Therefore, gas molecule such as oxygen, ozone and type impurity ion thereof can quicken to take off the HCl reaction greatly.And from lanthanide contraction and electron structure thereof learn, quantum-mechanical characteristics can judge, the type impurity ion that oxygen during rare earth thermal stabilizer can be processed PVC and PVC itself contain carries out physical adsorption, and enter in the lattice cave of rare earth thermal stabilizer, avoided their impact shocks to parent C-Cl key.Therefore,, can improve the activation energy that PVC takes off HCl, thereby delay the thermal destruction of PVC plastics by the effect of rare earth multiple function stable agent.Moreover suitable anionic group can play the chlorallylene atom on the displacement PVC macromole in the rare earth compound, eliminates this degraded weakness, also can reach stable purpose.
In sum, rare earth compound is the effect of playing stabilization by following 4 aspects: A, suppresses that the active chlorine of unstable structure removes reaction on the PVC chain effectively; B, absorption in and HCl, eliminate its to the degraded effect; C, seizure radical and adsorbed ion type impurity improve the activation energy that PVC takes off HCl; D, replace chlorallylene atom on the PVC macromole, eliminate degraded weakness etc. by suitable anionic group.
(2) rare earth thermal stability research
In order to investigate the static state and the dynamic thermal stability energy of rare earth thermal stabilizer in actual production, and compare with conventional formulation, done following experimental formula, prescription is number as shown in table 1, its thermal stability such as table 2.
Table 1 formula table
| Starting material | The prescription number | ||||
| 1 | 2 | 3 | 4 | ||
| PVC(S-1000) | 100 | 100 | 100 | 100 | |
| Rare earth thermal stabilizer | 4 | ||||
| Compound lead | Homemade | 4 | |||
| Abroad | 4 | ||||
| Lead sulfate tribasic | 3.5 | ||||
| Dibasic lead phosphite | 1.0 | |||
| Calcium stearate | 0.5 | |||
| Lead stearate | 0.8 | |||
| Lime carbonate | 20 | 20 | 20 | 20 |
| Other auxiliary agent | In right amount | In right amount | In right amount | In right amount |
Static and the dynamic thermal stability energy contrast table of table 2
The score value table
| Score value: | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Colourity: | Colourless | Coloured slightly | Lark or bois de rose | Pale brown look or red-brown | Brown | Dark-brown | Black |
Test-results shows: rare earth thermal stabilizer has excellent thermal stability, and alternative traditional lead salt stabilizer is produced fully.
(3) promote plastification
Rare earth thermal stabilizer has the promotion plastification to PVC, be because the plasticizing process of PVC mixture be actually PVC powder (～100 μ m) be broken for primary particle (～1 μ m) and more minuteness particle (～0.1 μ zone particle) down to the process (claiming gelation process again) of an atactic molecule ball of string, and any fragmentation, thinning process are prerequisite with effective power transmission all, rare earth atom Re
δ+Chlorine atom Cl with the PVC molecule
δ-Between can the exert all one's strength transmission of (particularly shearing force) of strong interaction strengthened, thereby can promote the PVC gelation.Be understood that this interactional more direct effect is to improve the consistency of rare earth compound and PVC effectively.Therefore, the transparency of rare earth compound-PVC system better.
(4) You Yi weathering resistance
Existing inorganic chemistry theory is informed us: rare earth element can absorb the UV-light of 230-320 nanometer, and electronics transits to triplet energy level from ground state level, by light, heat, hit and return ground state again after approach such as bumping quencher releases energy.Deducibility thus, the effect of rare earth thermal stabilizer tool anti-light aging.We compare under the rayed after hard glass filters at the 500W mercury lamp the PVC sample (through the twin-roll machine compressing tablet) of rare earth thermal stabilizer, lead stabilizer, organotin stabilizer preparation, the result is: rare earth system, organotin were that sample was not seen variable color in 427 hours, and plumbous sample preparation but became little yellow at 368 hours.This explanation, it is stablizer that the effect of rare earth thermal stabilizer anti-light aging is better than lead, with organotin performance suitable (may contain the anti-light aging composition in the liquid organotin), and on rare be the goods sulfidation-resistance to be better than lead salt be goods, to prevent northern area because of air sulphur content height, be directly used in outdoor goods and prevent that its early stage easily yellow from working.
Claims (3)
1. prescription of producing polyvinyl chloride (PVC) dual-wall ripple pipe is characterized in that:
It is as follows to fill a prescription: (kilogram)
Hard polyvinylchloride resin 100
Rare earth thermal stabilizer 3～6
Lubricant 1.5～2.5
Coupling agent 0.5～1.0
Acrylate 2～4
Properties-correcting agent 6～10
Rare earth modified carbonic acid calcium 10～25.
2. the prescription of a kind of production polyvinyl chloride (PVC) dual-wall ripple pipe according to claim 1 is characterized in that: described rare earth thermal stabilizer contains lanthanum, cerium light rare earths and calcium, zinc mixture; Described lubricant is stearic acid, paraffin, polyethylene wax mixture or stearic acid, paraffin wax mixture; Described coupling agent is titanic acid ester or aluminic acid ester; Described properties-correcting agent is chlorinatedpolyethylene or methyl methacrylate-butadiene-styrene.
3. the prescription of a kind of production polyvinyl chloride (PVC) dual-wall ripple pipe according to claim 1 is characterized in that: the weight of described rare earth thermal stabilizer is 4～5 kilograms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610044461 CN101029160A (en) | 2006-03-02 | 2006-03-02 | Formula for producing polyvinyl chloride double-wall corrugated pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610044461 CN101029160A (en) | 2006-03-02 | 2006-03-02 | Formula for producing polyvinyl chloride double-wall corrugated pipe |
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| Publication Number | Publication Date |
|---|---|
| CN101029160A true CN101029160A (en) | 2007-09-05 |
Family
ID=38714721
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610044461 Pending CN101029160A (en) | 2006-03-02 | 2006-03-02 | Formula for producing polyvinyl chloride double-wall corrugated pipe |
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| CN102070810A (en) * | 2010-12-16 | 2011-05-25 | 广东致顺化工环保设备有限公司 | Material special for corrugated pipe for high-density polyethylene prestressed concrete and production method thereof |
| CN102219966A (en) * | 2011-05-25 | 2011-10-19 | 周云全 | Double-wall corrugated pipe produced by utilizing waste and old hard polyvinyl chloride (PVC) material and manufacturing method thereof |
| CN102516688A (en) * | 2011-12-12 | 2012-06-27 | 杭州波达塑料科技股份有限公司 | Environmentally-friendly rigid polyvinyl chloride (PVC) double-wall corrugated pipe and preparation method thereof |
| CN102634133A (en) * | 2012-04-24 | 2012-08-15 | 湖北众联塑业科技有限公司 | Processing modifier for polyvinyl chloride steel-plastic composite pipelines |
| CN102634135A (en) * | 2012-04-24 | 2012-08-15 | 湖北众联塑业科技有限公司 | Processing modifier for polyvinyl chloride tetragonal ducts |
| CN102634136A (en) * | 2012-04-24 | 2012-08-15 | 湖北众联塑业科技有限公司 | Processing modifier for polyvinyl chloride plum pipelines |
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| CN102850697A (en) * | 2012-09-24 | 2013-01-02 | 佛山市日丰企业有限公司 | Polyvinyl chloride drain pipe and preparation method thereof |
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| CN104497447A (en) * | 2014-12-19 | 2015-04-08 | 黄文鹏 | Polyvinyl chloride double-wall corrugated pipe and preparation method thereof |
| CN104500874A (en) * | 2014-12-19 | 2015-04-08 | 黄文鹏 | Steel belt and reinforced polyvinyl chloride helical bellow and production method thereof |
| CN104763105A (en) * | 2015-04-17 | 2015-07-08 | 柳州市桥厦工程管材有限公司 | Prestressed plastic corrugated pipe with anchor bearing plate inserting opening |
| CN105647065A (en) * | 2016-03-30 | 2016-06-08 | 苗庆龄 | Industrial polyvinyl chloride wire and cable material and preparation method thereof |
| CN106247032A (en) * | 2016-08-24 | 2016-12-21 | 江苏长风波纹管有限公司 | A kind of reinforced steel-band polrvinyl chloride helical bellows and preparation method thereof |
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| CN106987077A (en) * | 2017-05-04 | 2017-07-28 | 宜宾天亿新材料科技有限公司 | Modified enhancing high-impact Double-wall PVC bellows formula of one kind and preparation method thereof |
| CN107057223A (en) * | 2017-04-28 | 2017-08-18 | 杭州波达塑料科技股份有限公司 | A kind of modified polyvinyl chloride double-wall corrugated pipe and its production technology |
| CN107177129A (en) * | 2017-06-16 | 2017-09-19 | 东莞市联洲知识产权运营管理有限公司 | A kind of preparation method of new polychloroethylene pipes for discharge of wastewater |
| CN107312263A (en) * | 2017-06-26 | 2017-11-03 | 江苏长风波纹管有限公司 | A kind of modified plastics for being used to manufacture chemical industry bellows |
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| CN102070810B (en) * | 2010-12-16 | 2012-05-09 | 广东致顺化工环保设备有限公司 | Material special for corrugated pipe for high-density polyethylene prestressed concrete and production method thereof |
| CN102070810A (en) * | 2010-12-16 | 2011-05-25 | 广东致顺化工环保设备有限公司 | Material special for corrugated pipe for high-density polyethylene prestressed concrete and production method thereof |
| CN102219966B (en) * | 2011-05-25 | 2012-11-07 | 周云全 | Double-wall corrugated pipe produced by utilizing waste and old hard polyvinyl chloride (PVC) material and manufacturing method thereof |
| CN102219966A (en) * | 2011-05-25 | 2011-10-19 | 周云全 | Double-wall corrugated pipe produced by utilizing waste and old hard polyvinyl chloride (PVC) material and manufacturing method thereof |
| CN102516688A (en) * | 2011-12-12 | 2012-06-27 | 杭州波达塑料科技股份有限公司 | Environmentally-friendly rigid polyvinyl chloride (PVC) double-wall corrugated pipe and preparation method thereof |
| CN102634136A (en) * | 2012-04-24 | 2012-08-15 | 湖北众联塑业科技有限公司 | Processing modifier for polyvinyl chloride plum pipelines |
| CN102634134A (en) * | 2012-04-24 | 2012-08-15 | 湖北众联塑业科技有限公司 | Processing modifier for polyvinyl chloride corrugated pipelines |
| CN102634135A (en) * | 2012-04-24 | 2012-08-15 | 湖北众联塑业科技有限公司 | Processing modifier for polyvinyl chloride tetragonal ducts |
| CN102634133A (en) * | 2012-04-24 | 2012-08-15 | 湖北众联塑业科技有限公司 | Processing modifier for polyvinyl chloride steel-plastic composite pipelines |
| CN102775696A (en) * | 2012-07-18 | 2012-11-14 | 盐城嘉诚塑胶有限公司 | Formula and production technology of PVC (Poly Vinyl Chloride) double-wall corrugated pipe |
| CN102850697B (en) * | 2012-09-24 | 2014-08-13 | 佛山市日丰企业有限公司 | Polyvinyl chloride drain pipe and preparation method thereof |
| CN102850697A (en) * | 2012-09-24 | 2013-01-02 | 佛山市日丰企业有限公司 | Polyvinyl chloride drain pipe and preparation method thereof |
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| CN103542192A (en) * | 2013-10-30 | 2014-01-29 | 安徽国通高新管业股份有限公司 | Double-wall corrugated pipe |
| CN103554768A (en) * | 2013-10-30 | 2014-02-05 | 安徽国通高新管业股份有限公司 | Flame-retardant corrugated pipe |
| CN104497447A (en) * | 2014-12-19 | 2015-04-08 | 黄文鹏 | Polyvinyl chloride double-wall corrugated pipe and preparation method thereof |
| CN104500874A (en) * | 2014-12-19 | 2015-04-08 | 黄文鹏 | Steel belt and reinforced polyvinyl chloride helical bellow and production method thereof |
| CN104763105A (en) * | 2015-04-17 | 2015-07-08 | 柳州市桥厦工程管材有限公司 | Prestressed plastic corrugated pipe with anchor bearing plate inserting opening |
| CN105647065A (en) * | 2016-03-30 | 2016-06-08 | 苗庆龄 | Industrial polyvinyl chloride wire and cable material and preparation method thereof |
| CN106247032A (en) * | 2016-08-24 | 2016-12-21 | 江苏长风波纹管有限公司 | A kind of reinforced steel-band polrvinyl chloride helical bellows and preparation method thereof |
| CN106566178A (en) * | 2016-10-31 | 2017-04-19 | 无锡市永兴金属软管有限公司 | High-temperature-resistant metal corrugated pipe alloy material preparation method |
| CN107057223A (en) * | 2017-04-28 | 2017-08-18 | 杭州波达塑料科技股份有限公司 | A kind of modified polyvinyl chloride double-wall corrugated pipe and its production technology |
| CN106987077A (en) * | 2017-05-04 | 2017-07-28 | 宜宾天亿新材料科技有限公司 | Modified enhancing high-impact Double-wall PVC bellows formula of one kind and preparation method thereof |
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