CN105802054A - Lead-free rigid polyvinyl chloride (PVC) composition for electrical engineering pipes and preparation method for lead-free rigid PVC composition - Google Patents
Lead-free rigid polyvinyl chloride (PVC) composition for electrical engineering pipes and preparation method for lead-free rigid PVC composition Download PDFInfo
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Abstract
The invention relates to a lead-free rigid polyvinyl chloride (PVC) composition for electrical engineering pipes and a preparation method for the lead-free rigid PVC composition. The preparation method comprises the steps: firstly, thoroughly mixing 80-90 parts (by weight) of uracil with 10-20 parts (by weight) of lipid lubricant at the temperature of 80 DEG C to 100 DEG C, so as to prepare a composite stabilizer; and then, thoroughly mixing 0.7-1.0 part (by weight) of the obtained stabilizer with 100 parts (by weight) of PVC, 1.5-2.5 parts (by weight) of lubricant, 15-20 parts (by weight) of filler, 4-8 parts (by weight) of impact resisting agent and 1.5-2.5 parts (by weight) of colorant in a high-speed mixer at the temperature of 130 DEG C, and then, cooling the mixture to room temperature in a low-speed mixer, thereby preparing the lead-free rigid PVC composition for the PVC electrical engineering pipes. Compared with the prior art, the lead-free rigid PVC composition and the preparation method therefor have the advantages that the uracil is an organic complex, is free of toxic or side effects and is free of any damage to human and natural environments, so that the PVC composition disclosed by the invention is remarkable in environment-friendly effect; and meanwhile, the mechanical properties and electrical properties of the PVC electrical engineering pipes are free of obvious damage, and primary characteristic of the electrical engineering pipes are basically maintained.
Description
Technical field
The present invention relates to a kind of polychloroethylene composition and preparation method thereof, especially relate to a kind of effective lead-free hard polyvinyl chloride composition of electrician and preparation method thereof.
Background technology
Polrvinyl chloride electrician's pipe obtains a wide range of applications at industry-by-industries such as civil buildings, capital construction and mines.Polrvinyl chloride it is known that Corvic itself has high-thermosensitive, it is easy to jaundice during machine-shaping and decomposes, so must add enough stabilizers when processing and forming and lubricant ensures smoothly completing of processing.The stabilizer that current polrvinyl chloride uses mainly has lead salt stabilizer, calcium zinc stabilizer and organic tin stabilizer.Wherein, although calcium zinc stabilizer is not leaded, but its range of work is narrower, easy variable color during formed product, and comprehensive use cost is higher, general only use in small-bore pressure of supply water tubing；The better heat stability of organic tin stabilizer, processing characteristics is also good, but it is expensive, and material cost is higher, and owing to stannum belongs to heavy metal, so health and the environmental pollution of operator are had potential risks by organic tin stabilizer；Lead salt stabilizer is most popular stabilizer in current polyvinyl chloride pipeline product, lead salt stabilizer low price, good processability, polrvinyl chloride electrician's pipe in the market is substantially all use lead salt stabilizer, but due to plumbous existence, operation employee and environment are had direct infringement by its toxicity.Along with country is more and more higher to the requirement of environmental protection, it is superior that polyvinyl chloride pipeline processing industry is badly in need of a kind of processing characteristics, and integrated cost maintains an equal level with lead salt stabilizer, and the new stabilizer of safety and environmental protection.
Chinese patent CN102977498A discloses a kind of Polyvinyl chloride composite electrical sleeve pipe, and with listed as parts by weight, this tubing is made up of following raw materials according: polyvinyl chloride resin 100 parts；Natural anhydrite: 2-60 part；Titanium dioxide: 3-10 part；Coating material: 0.01-15 part；Toughener: 1-20 part；MBS resin: 0.5-2 part；PE wax: 1-3 part；Stabilizer: 1-15 part；Lubricant: 0.1-15 part.Described natural anhydrite order number is more than 400 orders.The composite pipe that described Polyvinyl chloride composite electrical sleeve pipe is made up of materials such as polrvinyl chloride/natural anhydrites, has the advantages such as high temperature resistant, high pressure resistant, high intensity, shock resistance, it is adaptable to various wire protective conduits, distribution protection conduit.But stabilizer adopts lead salts complex stabilizer in above-mentioned patent, also due to the existence of lead, operation employee and environment are had direct infringement by its toxicity.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and a kind of environmental protection be provided, have no side effect, mechanical performance, electrical property be without the effective lead-free hard polyvinyl chloride composition of electrician and preparation method thereof of obvious damage.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of effective lead-free hard polyvinyl chloride composition of electrician, said composition includes following components and content (weight portion):
Described polrvinyl chloride is RPVC.
Described stabilizer is made up of the uracil of 80～90 weight portions and the lipid lubricant of 10～20 weight portions.
The lipid lubricant of every weight portion is made up of the partial fatty acid ester of 0.5 weight portion and the dicarboxylic ester of 0.5 weight portion.
Described lubricant is made up of the stearic acid of 40～50 weight portions and the Tissuemat E of 50～60 weight portions.
Described filler is activated Calcium carbonate.
Described anti-impact agent is selected from chlorinated polyethylene, MBS (methyl methacrylate, butadiene, styrene copolymer) or anti-impact type ACR (Acryliccopolymer, be the acrylic acid esters co-polymer with nucleocapsid structure, be the PVC impact modifier of a kind of high comprehensive performance) in any one.
Described coloring agent includes the rutile titanium white lead of 100 weight portions and the uvioresistant photo etching composition of 10 weight portions.
The preparation method of the effective lead-free hard polyvinyl chloride composition of a kind of electrician, comprises the following steps:
(1) preparation of stabilizer
80～90 weight portion uracil, 10～20 weight portion lipid lubricants are sufficiently mixed under 80～100 DEG C of conditions, prepare a kind of complex stabilizer；
(2) preparation of hard polyvinyl chloride composition
Stabilizer 0.7～1.0 weight portion that will obtain in above-mentioned steps, in high-speed mixer, 130 DEG C it are fully mixed to plus polrvinyl chloride 100 weight portion and lubricant 1.5～2.5 weight portion, filler 15～20 weight portion, anti-impact agent 4～8 weight portion, coloring agent 1.5～2.5 weight portion, then in low speed mixer, it is cooled to room temperature, namely prepares the effective lead-free hard polyvinyl chloride composition of polrvinyl chloride electrician.
The mixing speed of described high-speed mixer is 1400-1500r/min, and the mixing speed of low speed mixer is 10-30r/min.
Owing to electrician's pipe major part is to bury wall construction, do not contact with natural environment, so the addition of the coloring agent in formula is fewer.Additionally, electrician's pipe is higher to shock proof requirement, so formula adds appropriate anti-impact agent.Also being that the addition of calcium carbonate is preferably no more than 20 weight portions for the consideration to erosion-resisting characteristics, otherwise, shock resistance can produce fluctuation.
Compared with prior art, the present invention has the following advantages and beneficial effect:
Owing to adding homemade stabilizer, therefore the polychloroethylene composition environment protecting obtained is notable, owing to uracil is organic synthesis thing, and have no side effect, human body and natural environment do not had any infringement, and to by the mechanical performance of polrvinyl chloride electrician's pipe, electrical property without obvious infringement, the basic primary characteristic keeping electrician's pipe, it is possible to the substrate as environment-friendly type electrician's pipe uses.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
According to the preparation method of the effective lead-free hard polyvinyl chloride composition of polrvinyl chloride electrician, the stabilizer in the preparation present invention, formula forms in Table 1:
The composition of table 1 stabilizer
| Uracil | Lipid lubricant | |
| A | 80 | 20 |
| B | 85 | 15 |
| C | 90 | 10 |
(the lipid lubricant of every weight portion is made up of the partial fatty acid ester of 0.5 weight portion and the dicarboxylic ester of 0.5 weight portion)
Embodiment 1:
By the stabilizer A of 0.8 weight portion, the polrvinyl chloride of 100 weight portions, anti-impact agent chlorinated polyethylene (CPE) of 6.0 weight portions, the lubricant (Tissuemat E and stearic acid) of 2.0 weight portions, the filler (activated Calcium carbonate) of 15 weight portions, above-mentioned raw materials is fully mixed to 130 DEG C according to the part by weight of formula by the coloring agent etc. of 2.0 weight portions in high speed agitator, to be then placed in low-speed agitator cold mixes to 45 DEG C, wherein, the mixing speed of high-speed mixer is 1450r/min, the mixing speed of low speed mixer is 20r/min, extrude sample preparation (the medium-sized electrician's pipe of 20mm) on the twin screw extruder, test performance.Result is in Table 2.
Embodiment 2:
Except stabilizer B is replaced stabilizer A, all the other components are all identical with embodiment 1 with process conditions.By gained sample test, result is in Table 2.
Embodiment 3:
Except stabilizer C is replaced stabilizer A, all the other components are all identical with embodiment 1 with process conditions.By gained sample test, result is in Table 2.
Embodiment 4:
Except the MBS anti-impact agent of 4.0 weight portions replaces chlorinated polyethylene (CPE) the anti-impact agent of 6.0 weight portions, all the other components are all identical with embodiment 1 with process conditions.By gained sample test, result is in Table 3.
Comparative example 1:
Except lead salt stabilizer 2.8 weight portion is replaced stabilizer A, all the other components are all identical with embodiment 1 with process conditions.By gained sample test, result is in Table 2.
Table 2
As can be seen from Table 2, in embodiment 1～4, the correlated performances such as effective its mechanical performance of lead-free hard polyvinyl chloride composition of electrician that homemade stabilizer obtains, electrical property, thermostability are adopted to adopt Pb compound to be substantially free of change as the effective lead-free hard polyvinyl chloride composition of electrician that stabilizer obtains with conventional, therefore, adopt the present invention stabilizer to the mechanical performance of polrvinyl chloride electrician's pipe, electrical property without obvious infringement, the basic primary characteristic keeping electrician's pipe, it is possible to the substrate as environment-friendly type electrician's pipe uses.Simultaneously because uracil is organic synthesis thing, and have no side effect, human body and natural environment are not had any infringement, therefore, adopt the effective lead-free hard polyvinyl chloride composition safety and environmental protection of electrician that homemade stabilizer obtains.
Embodiment 5
A kind of effective lead-free hard polyvinyl chloride composition of electrician, said composition includes following components and content (weight portion):
Preparation method comprises the following steps:
(1) preparation of stabilizer
80 weight portion uracil, 20 weight portion lipid lubricants are sufficiently mixed under 80 DEG C of conditions, prepare a kind of complex stabilizer；
(2) preparation of hard polyvinyl chloride composition
Stabilizer 0.7 weight portion that will obtain in above-mentioned steps, in high-speed mixer, 130 DEG C it are fully mixed to plus polrvinyl chloride 100 weight portion and lubricant 1.5 weight portion, filler 15 weight portion, anti-impact agent 4 weight portion, coloring agent 1.5 weight portion, then in low speed mixer, it is cooled to room temperature, namely prepares the effective lead-free hard polyvinyl chloride composition of polrvinyl chloride electrician.The mixing speed of high-speed mixer is 1400r/min, and the mixing speed of low speed mixer is 10r/min.
Embodiment 6
A kind of effective lead-free hard polyvinyl chloride composition of electrician, said composition includes following components and content (weight portion):
Preparation method comprises the following steps:
(1) preparation of stabilizer
90 weight portion uracil, 10 weight portion lipid lubricants are sufficiently mixed under 100 DEG C of conditions, prepare a kind of complex stabilizer；
(2) preparation of hard polyvinyl chloride composition
Stabilizer 1.0 weight portion that will obtain in above-mentioned steps, in high-speed mixer, 130 DEG C it are fully mixed to plus polrvinyl chloride 100 weight portion and lubricant 2.5 weight portion, filler 20 weight portion, anti-impact agent 8 weight portion, coloring agent 2.5 weight portion, then in low speed mixer, it is cooled to room temperature, namely prepares the effective lead-free hard polyvinyl chloride composition of polrvinyl chloride electrician.The mixing speed of high-speed mixer is 1500r/min, and the mixing speed of low speed mixer is 30r/min.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and use invention.These embodiments obviously easily can be made various amendment by person skilled in the art, and General Principle described herein is applied in other embodiments without through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, those skilled in the art's announcement according to the present invention, the improvement made without departing from scope and amendment all should within protection scope of the present invention.
Claims (10)
1. the effective lead-free hard polyvinyl chloride composition of electrician, it is characterised in that with parts by weight, said composition includes following components and content:
2. a kind of effective lead-free hard polyvinyl chloride composition of electrician according to claim 1, it is characterised in that described polrvinyl chloride is RPVC.
3. a kind of effective lead-free hard polyvinyl chloride composition of electrician according to claim 1, it is characterised in that described stabilizer is made up of the uracil of 80～90 weight portions and the lipid lubricant of 10～20 weight portions.
4. a kind of effective lead-free hard polyvinyl chloride composition of electrician according to claim 3, it is characterised in that the lipid lubricant of every weight portion is made up of the partial fatty acid ester of 0.5 weight portion and the dicarboxylic ester of 0.5 weight portion.
5. a kind of effective lead-free hard polyvinyl chloride composition of electrician according to claim 1, it is characterised in that described lubricant is made up of the stearic acid of 40～50 weight portions and the Tissuemat E of 50～60 weight portions.
6. a kind of effective lead-free hard polyvinyl chloride composition of electrician according to claim 1, it is characterised in that described filler is activated Calcium carbonate.
7. a kind of effective lead-free hard polyvinyl chloride composition of electrician according to claim 1, it is characterised in that described anti-impact agent is selected from any one in chlorinated polyethylene, MBS or anti-impact type ACR.
8. a kind of effective lead-free hard polyvinyl chloride composition of electrician according to claim 1, it is characterised in that described coloring agent includes the rutile titanium white lead of 100 weight portions and the uvioresistant photo etching composition of 10 weight portions.
9. the preparation method of the effective lead-free hard polyvinyl chloride composition of electrician as claimed in claim 1, it is characterised in that the method comprises the following steps:
(1) preparation of stabilizer
80～90 weight portion uracil, 10～20 weight portion lipid lubricants are sufficiently mixed under 80～100 DEG C of conditions, prepare a kind of complex stabilizer；
(2) preparation of hard polyvinyl chloride composition
Stabilizer 0.7～1.0 weight portion that will obtain in above-mentioned steps, in high-speed mixer, 130 DEG C it are fully mixed to plus polrvinyl chloride 100 weight portion and lubricant 1.5～2.5 weight portion, filler 15～20 weight portion, anti-impact agent 4～8 weight portion, coloring agent 1.5～2.5 weight portion, then in low speed mixer, it is cooled to room temperature, namely prepares the effective lead-free hard polyvinyl chloride composition of polrvinyl chloride electrician.
10. the preparation method of the effective lead-free hard polyvinyl chloride composition of a kind of electrician according to claim 9, it is characterised in that the mixing speed of described high-speed mixer is 1400-1500r/min, and the mixing speed of low speed mixer is 10-30r/min.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178228A (en) * | 1996-09-25 | 1998-04-08 | 希巴特殊化学控股公司 | Rigid PVC stabilised with N, N-dimethyl-6-aminouracils |
| CN1720287A (en) * | 2002-12-02 | 2006-01-11 | 克罗姆普顿乙烯添加剂有限公司 | Monosubstituted 6-aminouracils for the stabilisation of halogenated polymers |
| 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 |
| CN102898741A (en) * | 2012-10-08 | 2013-01-30 | 太原市塑料研究所 | Polyvinyl chloride heat stabilizer and preparation method thereof |
-
2014
- 2014-12-29 CN CN201410857067.7A patent/CN105802054A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1178228A (en) * | 1996-09-25 | 1998-04-08 | 希巴特殊化学控股公司 | Rigid PVC stabilised with N, N-dimethyl-6-aminouracils |
| CN1720287A (en) * | 2002-12-02 | 2006-01-11 | 克罗姆普顿乙烯添加剂有限公司 | Monosubstituted 6-aminouracils for the stabilisation of halogenated polymers |
| 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 |
| CN102898741A (en) * | 2012-10-08 | 2013-01-30 | 太原市塑料研究所 | Polyvinyl chloride heat stabilizer and preparation method thereof |
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Application publication date: 20160727 |