CN105802053A - Lead-free rigid polyvinyl chloride (PVC) composition for water drain pipes and preparation method for lead-free rigid PVC composition - Google Patents
Lead-free rigid polyvinyl chloride (PVC) composition for water drain pipes and preparation method for lead-free rigid PVC composition Download PDFInfo
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- CN105802053A CN105802053A CN201410857060.5A CN201410857060A CN105802053A CN 105802053 A CN105802053 A CN 105802053A CN 201410857060 A CN201410857060 A CN 201410857060A CN 105802053 A CN105802053 A CN 105802053A
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Abstract
The invention relates to a lead-free rigid polyvinyl chloride (PVC) composition for water drain pipes and a preparation method for the lead-free rigid PVC composition. The preparation method comprises the steps: firstly, thoroughly mixing 75-90 parts (by weight) of uracil with 10-25 parts (by weight) of lipid lubricant at the temperature of 80 DEG C to 100 DEG C, so as to prepare a stabilizer; and then, thoroughly mixing 0.9-1.1 parts (by weight) of the obtained stabilizer with 100 parts (by weight) of PVC, 2.5-3.5 parts (by weight) of lubricant, 20 parts (by weight) of filler and 2.0-2.5 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 water drain 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 lead-free rigid PVC composition for the water drain pipes, disclosed by the invention, is remarkable in environment-friendly effect; and meanwhile, the mechanical properties are free of obvious damage, the Vicat softening temperature is slightly increased, and primary characteristic of the PVC water drain 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 drain pipe lead-free hard polyvinyl chloride composition and preparation method thereof.
Background technology
Polyvinyl-chloride drainage 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, polyvinyl-chloride drainage 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.Although country is plumbous but without concrete timetable for prohibiting of polyvinyl-chloride drainage pipe, but along with country is more and more higher to the requirement of environmental protection, it is more and more higher that the whole society prohibits plumbous cry, each enterprise all increases the R&D work of environment-friendly stabilizer, wish to find a kind of processing characteristics superior, integrated cost maintains an equal level with lead salt stabilizer, and the new stabilizer of safety and environmental protection replaces lead salt stabilizer.
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 is without drain pipe lead-free hard polyvinyl chloride composition and preparation method thereof of obvious damage.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of lead-free hard polyvinyl chloride composition of drain pipe, with parts by weight, said composition includes following components and content:
Described polrvinyl chloride is RPVC.
Described stabilizer is made up of the uracil of 75～90 weight portions and the lipid lubricant of 10～25 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 stearic acid 30～35 weight portion, calcium stearate 30～35 weight portion and Tissuemat E 30～40 weight portion.
Described filler is activated Calcium carbonate.
Described coloring agent is made up of rutile titanium white lead 95 weight portion and uvioresistant photo etching 5 weight portion.
A kind of drain pipe preparation method of lead-free hard polyvinyl chloride composition, comprises the following steps:
(1) preparation of stabilizer
By 75～90 weight portion uracil, 10～25 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 0.9～1.1 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 2.5～3.5 weight portion, filler 20 weight portion, coloring agent 2.0～2.5 weight portion, then in low speed mixer, it is cooled to room temperature, namely prepares the lead-free hard polyvinyl chloride composition of drain pipe.
The mixing speed of described high-speed mixer is 1400-1500r/min, and the mixing speed of low speed mixer is 10-30r/min.
In above-mentioned steps (2), Corvic is hard polyvinylchloride resin.
Due to drain pipe mainly in indoor use, so the addition of coloring agent is more less slightly than rain pipe in formula.Additionally, the hot strength of drain pipe is greater than 40Mpa, therefore in formula, the addition of filler must not more than 20 weight portions, to meet the requirement of its hot strength, when filler is too much, it is impossible to meet the requirement of hot strength, crosses when filler and affect other performances of tubing at least.
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 are not had any infringement, and to the mechanical performance of polyvinyl-chloride drainage pipe without obvious infringement, and vicat softening temperature also slightly improves, the basic primary characteristic keeping polyvinyl-chloride drainage pipe, it is possible to the substrate as environmental protection polyvinyl chloride drain pipe uses.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
According to the polyvinyl-chloride drainage pipe preparation method with lead-free hard polyvinyl chloride composition, the stabilizer in the preparation present invention, formula forms in Table 1:
The composition of table 1 stabilizer
(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 2.0 weight portions, the polrvinyl chloride of 100 weight portions, the lubricant (Tissuemat E and stearic acid) of 3.6 weight portions, the filler (activated Calcium carbonate) of 10 weight portions, 2.2 weight portions coloring agent etc. according to the part by weight of formula, above-mentioned raw materials is fully mixed to 130 DEG C in high speed agitator, the mixing speed of high-speed mixer is 1450r/min, to be then placed in low-speed agitator cold mixes to 45 DEG C, the mixing speed of low speed mixer is 20r/min, extrude sample preparation (110mmx3.2mm drain pipe), test performance on the twin screw extruder.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 stabilizer D 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.
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 drain pipe its mechanical performance of lead-free hard polyvinyl chloride composition that homemade stabilizer obtains, appearance property, surface property are adopted to adopt Pb compound to be substantially free of change as the lead-free hard polyvinyl chloride composition of drain pipe that stabilizer obtains with conventional, and vicat softening temperature also slightly improves, the basic primary characteristic keeping drain pipe.Therefore, the mechanical performance of polyvinyl-chloride drainage pipe, appearance property, surface property without obvious infringement, are kept the primary characteristic of polyvinyl-chloride drainage pipe by the stabilizer of the employing present invention substantially.Simultaneously because uracil is organic synthesis thing, and have no side effect, human body and natural environment are not had any infringement.
Embodiment 5
A kind of lead-free hard polyvinyl chloride composition of drain pipe, with parts by weight, said composition includes following components and content:
Its preparation method, comprises the following steps:
(1) preparation of stabilizer
By 75 weight portion uracil, 25 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 0.9 weight portion that will obtain in above-mentioned steps, in high-speed mixer, 130 DEG C it are fully mixed to plus RPVC 100 weight portion and lubricant 2.5 weight portion, filler 20 weight portion, coloring agent 2.0 weight portion, then in low speed mixer, it is cooled to room temperature, namely prepares the lead-free hard polyvinyl chloride composition of drain pipe.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 lead-free hard polyvinyl chloride composition of drain pipe, with parts by weight, said composition includes following components and content:
Its preparation method, comprises the following steps:
(1) preparation of stabilizer
By 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 1.1 weight portion that will obtain in above-mentioned steps, in high-speed mixer, 130 DEG C it are fully mixed to plus RPVC 100 weight portion and lubricant 3.5 weight portion, filler 20 weight portion, coloring agent 2.5 weight portion, then in low speed mixer, it is cooled to room temperature, namely prepares the lead-free hard polyvinyl chloride composition of drain pipe.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 (9)
1. the lead-free hard polyvinyl chloride composition of drain pipe, it is characterised in that with parts by weight, said composition includes following components and content:
2. a kind of lead-free hard polyvinyl chloride composition of drain pipe according to claim 1, it is characterised in that described polrvinyl chloride is RPVC.
3. a kind of lead-free hard polyvinyl chloride composition of drain pipe according to claim 1, it is characterised in that described stabilizer is made up of the uracil of 75～90 weight portions and the lipid lubricant of 10～25 weight portions.
4. a kind of lead-free hard polyvinyl chloride composition of drain pipe 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 lead-free hard polyvinyl chloride composition of drain pipe according to claim 1, it is characterised in that described lubricant is made up of stearic acid 30～35 weight portion, calcium stearate 30～35 weight portion and Tissuemat E 30～40 weight portion.
6. a kind of lead-free hard polyvinyl chloride composition of drain pipe according to claim 1, it is characterised in that described filler is activated Calcium carbonate.
7. a kind of lead-free hard polyvinyl chloride composition of drain pipe according to claim 1, it is characterised in that described coloring agent is made up of rutile titanium white lead 95 weight portion and uvioresistant photo etching 5 weight portion.
8. the drain pipe as claimed in claim 1 preparation method of lead-free hard polyvinyl chloride composition, it is characterised in that the method comprises the following steps:
(1) preparation of stabilizer
By 75～90 weight portion uracil, 10～25 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 0.9～1.1 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 2.5～3.5 weight portion, filler 20 weight portion, coloring agent 2.0～2.5 weight portion, then in low speed mixer, it is cooled to room temperature, namely prepares the lead-free hard polyvinyl chloride composition of drain pipe.
9. a kind of drain pipe according to claim 8 preparation method of lead-free hard polyvinyl chloride composition, 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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| CN201410857060.5A CN105802053A (en) | 2014-12-29 | 2014-12-29 | Lead-free rigid polyvinyl chloride (PVC) composition for water drain pipes and preparation method for lead-free rigid PVC composition |
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| CN201410857060.5A CN105802053A (en) | 2014-12-29 | 2014-12-29 | Lead-free rigid polyvinyl chloride (PVC) composition for water drain pipes and preparation method for lead-free rigid PVC composition |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103183644A (en) * | 2011-12-31 | 2013-07-03 | 深圳市志海实业有限公司 | Uracil zinc salt and application thereof as heat stabilizer for PVC |
-
2014
- 2014-12-29 CN CN201410857060.5A patent/CN105802053A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103183644A (en) * | 2011-12-31 | 2013-07-03 | 深圳市志海实业有限公司 | Uracil zinc salt and application thereof as heat stabilizer for PVC |
| 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 |