CN105802050A - Lead-free rigid polyvinyl chloride composition for rain pipe and preparation method thereof - Google Patents
Lead-free rigid polyvinyl chloride composition for rain pipe and preparation method thereof Download PDFInfo
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- CN105802050A CN105802050A CN201410849172.6A CN201410849172A CN105802050A CN 105802050 A CN105802050 A CN 105802050A CN 201410849172 A CN201410849172 A CN 201410849172A CN 105802050 A CN105802050 A CN 105802050A
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Abstract
The invention relates to a lead-free rigid polyvinyl chloride composition for a rain pipe and a preparation method thereof. The preparation method comprises fully mixing 70-85 parts by weight of uracil, 10-20 parts by weight of a lipid lubricant and 5-10 parts by weight of calcium stearate at a temperature of 80-100 DEG C to obtain a stabilizing agent, fully mixing 1.0-1.2 parts by weight of the stabilizing agent, 100 parts by weight of polyvinyl chloride, 2.0-2.5 parts by weight of a lubricant, 15 parts by weight of a filler and 2.2-2.7 parts by weight of a coloring agent through a high speed mixer until a temperature of 130 DEG C and cooling the mixture in a low speed mixer to the room temperature so that the lead-free rigid polyvinyl chloride composition for a rain pipe is obtained. Compared with the existing polyvinyl chloride composition, the lead-free rigid polyvinyl chloride composition contains uracil which is an organic compound, has no toxic or side effect and does not damage the human body and the natural environment and thus the lead-free rigid polyvinyl chloride composition for a rain pipe fitting has substantial environmental protection effects, basically retains mechanical properties and has several higher mechanical properties.
Description
Technical field
The present invention relates to a kind of polychloroethylene composition and preparation method thereof, especially relate to a kind of rain pipe lead-free hard polyvinyl chloride composition and preparation method thereof.
Background technology
Polrvinyl chloride rain 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 rain 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 polrvinyl chloride rain 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 rain 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 rain pipe, with parts by weight, said composition includes following components and content:
Described polrvinyl chloride is RPVC.
Described stabilizer agent is made up of uracil 70～85 weight portion, calcium stearate 5～10 weight portion and lipid lubricant 10～20 weight portion.
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 40～50 weight portion and Tissuemat E 50～60 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 rain pipe preparation method of lead-free hard polyvinyl chloride composition, comprises the following steps:
(1) preparation of stabilizer
By 70～85 weight portion uracil, 10～20 weight portion lipid lubricants and 5～10 parts by weight of calcium stearate are sufficiently mixed under 80～100 DEG C of conditions, prepare a kind of complex stabilizer agent；
(2) preparation of hard polyvinyl chloride composition
Stabilizer 1.0～1.2 weight portion that will obtain in above-mentioned steps, in high-speed mixer, 130 DEG C it are fully mixed to plus auxiliary agents such as polrvinyl chloride 100 weight portion and lubricant 2.0～2.5 weight portion, filler 15 weight portion, coloring agent 2.2～2.7 weight portions, then in low speed mixer, it is cooled to room temperature, namely prepares the lead-free hard polyvinyl chloride composition of rain 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 rainwater tubing mainly in outdoor application, coloring agent uses rutile titanium white lead and uvioresistant photo etching to strengthen ageing resistace.Additionally, due to the hot strength of rain pipe cannot be less than 43MPa, therefore in formula, the addition of filler is set to 15 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 polrvinyl chloride rain pipe without obvious infringement, and indivedual mechanical performance index also slightly improves, the basic primary characteristic keeping rain pipe, it is possible to the substrate as environmental protection polyvinyl chloride rain pipe uses.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
According to the polrvinyl chloride rain 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 1.1 weight portions, the polrvinyl chloride of 100 weight portions, the lubricant (Tissuemat E and stearic acid) of 2.2 weight portions, the filler (activated Calcium carbonate) of 15 weight portions, 2.4 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 (110mmx2.1mm rain 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 2.7 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 rain pipe its mechanical performance of lead-free hard polyvinyl chloride composition that homemade stabilizer obtains, appearance property, weather resistance are adopted to adopt Pb compound to be substantially free of change as the lead-free hard polyvinyl chloride composition of rain pipe that stabilizer obtains with conventional, and mechanical performance index also slightly improves individually, the basic primary characteristic keeping rain pipe.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 rain pipe, with parts by weight, said composition includes following components and content:
Ingredients weight parts
RPVC 100,
Stabilizer (is made up of, 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) 1.0 uracil 70 weight portion, calcium stearate 10 weight portion and lipid lubricant 20 weight portion,
Lubricant (is made up of) 2.0 stearic acid 40 weight portion and Tissuemat E 60 weight portion,
Filler (activated Calcium carbonate) 15,
Coloring agent (is made up of) 2.2 rutile titanium white lead 95 weight portion and uvioresistant photo etching 5 weight portion.
Its preparation method, comprises the following steps:
(1) preparation of stabilizer
By 70 weight portion uracil, 20 weight portion lipid lubricants and 10 parts by weight of calcium stearate are sufficiently mixed under 80 DEG C of conditions, prepare a kind of complex stabilizer agent；
(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 auxiliary agents such as RPVC 100 weight portion and lubricant 2.0 weight portion, filler 15 weight portion, coloring agent 2.2 weight portions, then in low speed mixer, it is cooled to room temperature, namely prepares the lead-free hard polyvinyl chloride composition of rain 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 rain pipe, with parts by weight, said composition includes following components and content:
Ingredients weight parts
RPVC 100,
Stabilizer (is made up of, 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) 1.2 uracil 85 weight portion, calcium stearate 5 weight portion and lipid lubricant 10 weight portion,
Lubricant (is made up of) 2.5 stearic acid 50 weight portion and Tissuemat E 50 weight portion,
Filler (activated Calcium carbonate) 15,
Coloring agent (is made up of) 2.7 rutile titanium white lead 95 weight portion and uvioresistant photo etching 5 weight portion.
Its preparation method, comprises the following steps:
(1) preparation of stabilizer
By 85 weight portion uracil, 10 weight portion lipid lubricants and 5 parts by weight of calcium stearate are sufficiently mixed under 100 DEG C of conditions, prepare a kind of complex stabilizer agent；
(2) preparation of hard polyvinyl chloride composition
Stabilizer 1.2 weight portion that will obtain in above-mentioned steps, in high-speed mixer, 130 DEG C it are fully mixed to plus auxiliary agents such as RPVC 100 weight portion and lubricant 2.5 weight portion, filler 15 weight portion, coloring agent 2.7 weight portions, then in low speed mixer, it is cooled to room temperature, namely prepares the lead-free hard polyvinyl chloride composition of rain 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 rain 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 rain 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 rain pipe according to claim 1, it is characterised in that described stabilizer agent is made up of uracil 70～85 weight portion, calcium stearate 5～10 weight portion and lipid lubricant 10～20 weight portion.
4. a kind of lead-free hard polyvinyl chloride composition of rain 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 rain pipe according to claim 1, it is characterised in that described lubricant is made up of stearic acid 40～50 weight portion and Tissuemat E 50～60 weight portion.
6. a kind of lead-free hard polyvinyl chloride composition of rain 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 rain 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 rain 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 70～85 weight portion uracil, 10～20 weight portion lipid lubricants and 5～10 parts by weight of calcium stearate are sufficiently mixed under 80～100 DEG C of conditions, prepare a kind of complex stabilizer agent；
(2) preparation of hard polyvinyl chloride composition
Stabilizer 1.0～1.2 weight portion that will obtain in above-mentioned steps, in high-speed mixer, 130 DEG C it are fully mixed to plus auxiliary agents such as polrvinyl chloride 100 weight portion and lubricant 2.0～2.5 weight portion, filler 15 weight portion, coloring agent 2.2～2.7 weight portions, then in low speed mixer, it is cooled to room temperature, namely prepares the lead-free hard polyvinyl chloride composition of rain pipe.
9. a kind of rain 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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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 CN201410849172.6A patent/CN105802050A/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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