CN101575436A - Raw material and method for preparing polyvinylchloride antistatic pipes - Google Patents
Raw material and method for preparing polyvinylchloride antistatic pipes Download PDFInfo
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- CN101575436A CN101575436A CN 200910038023 CN200910038023A CN101575436A CN 101575436 A CN101575436 A CN 101575436A CN 200910038023 CN200910038023 CN 200910038023 CN 200910038023 A CN200910038023 A CN 200910038023A CN 101575436 A CN101575436 A CN 101575436A
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- polyvinylchloride
- carbon black
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Abstract
The invention provides a raw material and a method for preparing polyvinylchloride antistatic pipes. The raw material comprises components by weight portion as follows: 100 portions of polyvinylchloride resin powder, 3.5 to 5 portions of stabilizer, 1 to 2 portions of lubricating additive, 1 to 3 portions of processing-modifying additive, 5 to 12 portions of impact modifier, 5 to 15 portions of conductive carbon black, and 0.25 to 1.5 portions of coupling agent. Mixed ingredients are subjected to high-speed hot mixing, low-speed cold mixing and then extrusion molding so as to obtain high-strength anti-static flame-retardant polyvinylchloride pipes for coal mines.
Description
Technical field
The invention belongs to the polychloroethylene pipes preparation field, particularly relate to a kind of raw material and preparation method of polyvinylchloride antistatic pipes.
Background technology
Under the fast-developing situation of current China's coal-mine exploitation, trouble-free service is the most important thing, in safety improvement work, need use a large amount of pipelines and will exist the methane gas of explosion hazard to draw mine by pipeline.Therefore, select dependable performance, easy for installation, low price, the gas drainage pipe of long service life is to the mine safety and the extremely important meaning that reduced production costs.
PVC is a kind of material of excellent property, and relatively steel pipe, PE colliery pipe have advantage such as easy for installation, the operation and maintenance cost is low, long service life and be widely used.
Polyvinyl chloride resin is macromolecular material, and its volume resistance is very high, is 1 * 1014--1 * 1016, and frosting will produce static once friction, accumulates in frosting.Because electrostatic potential up to several kilovolts, might cause fire and blast during static discharge.Be to eliminate static hazard, effective means is the electric conductivity that increases plastics tubing, and static charge can constantly neutralize by the volume conduction and the surface conductance of plastics tubing.Say that exactly antistatic property is not to make plastics itself conduct electricity, but makes the electric charge in the frosting not assemble.The method that increases the plastics tubing electric conductivity has two kinds usually, and a kind of is to add static inhibitor, and another kind then is to add graphitized carbon black to form conductive path.
A lot of products all are to reach antistatic effect by the method for adding static inhibitor.Close polyvinyl chloride resin of the static inhibitor of this type, one is hydrophilic, reaches antistatic effect by forming water membrane at frosting, and therefore several fatal defectives are arranged: 1) surface resistivity decline is limited, can only reach 108 anlistatig ranks; 2) be subjected to the influence of ambient moisture easily, if ambient moisture is lower, then be difficult to form moisture film, antistatic effect descends.3), reduce antistatic effect easily along with the time is separated out loss.
Add graphitized carbon black and then can avoid above-mentioned defective, because graphitized carbon black is dispersed in system inside as stopping composition, form conductive path, system is had lastingly, the constant antistatic effect is not subjected to the influence of ambient moisture and time.But the graphitized carbon black specific surface area is big, and it is bigger to the system viscosity influence to add the back, material processing characteristics deterioration, and also along with the increase of umber, the fragility of material increases obviously.
Summary of the invention
The object of the present invention is to provide the preparation raw material of a kind of polyvinyl chloride colliery with pipe.
Another object of the present invention is to provide a kind of high strength, corrosion-resistant, antistatic, flame-proof polyvinyl chloride colliery preparation method with pipe.
In order to realize goal of the invention one, the technical scheme of employing is as follows:
A kind of preparation raw material of polyvinylchloride antistatic pipes, form by the component of following parts by weight:
Polyvinyl chloride resin powder 100
Stablizer 3.5-5
Lubricating auxiliary agent 1-2
Processing modified adjuvant 1-3
Impact modifier 5-12
Graphitized carbon black 5-15
Coupling agent 0.25-1.5.
In the technique scheme, one or more of the polyolefine of described lubricating auxiliary agent employing low-molecular-weight polyolefin, oxidation, paraffin are compound.
Described impact modifier comprises core-shell polymer.As MBS class and ACR class and CPE.
Described carbon black is a graphitized carbon black, adopts powdery or particulate state.
In order to realize goal of the invention two, the technical scheme of employing is as follows:
A kind of method for preparing polyvinylchloride antistatic pipes will prepare raw material by the cold mixed back extrusion moulding of the mixed low speed of heat at a high speed, obtain antistatic, flame-proof polyvinyl chloride colliery tubing.
Specifically comprise the steps:
(1) mixes with the polyvinyl chloride resin powder with by the auxiliary agent that stablizer, lubricating auxiliary agent, processing modified adjuvant, impact modifier are formed;
(2) graphitized carbon black is handled with coupling agent;
(3) all raw materials with step (1) and (2) carry out the gross weight detection, if undesirable, then each component are carried out taxonomic revision, and return step (1), if gross weight meets the requirements, then carry out step (4);
(4) all raw materials are carried out following operation successively:
High temperature kneading, cold mixed cooling, discharge, enter forcing machine, heating plasticizing, extrude, cooling and shaping, traction, cutting;
(5) packing of the coffin after will cutting warehouse-in is finished.
When the graphitized carbon black of described step (2) need be used coupling agent treatment, the adding umber of coupling agent was the 5%-10% of graphitized carbon black amount.
Between described step (4) and the step (5), also comprise the tubing after the cutting is carried out quality inspection, then scrap broken the recovery as defective.
The present invention mediates each component and is uniformly dispersed into mixed ingredients, controls suitable processing parameter, obtains qualified product by the forcing machine plasticizing forming.Product performance meet the requirement of MT 558.2-2005 colliery with polyvinyl chloride (firmly) tubing.
Compare with existing antistatic pipe production technology, the present invention has following advantage and effect:
1, uses graphitized carbon black, make product have lasting, stable antistatic effect;
2, use coupling agent that graphitized carbon black is carried out pre-treatment, strengthen the consistency of carbon black and polyvinyl chloride resin, reduced the graphitized carbon black consumption, improved the product over-all properties;
3, transform original extrusion equipment, increase mixing section, make that carbon black is easier to be uniformly dispersed;
4, add an amount of anti-impact modifier, improve product fragility, and don't reduce the hydraulic performance of product.
Description of drawings
Fig. 1 is preparation method's schema of the present invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
Preparation method of the present invention comprises the steps: as shown in Figure 1
(1) mixes with the polyvinyl chloride resin powder with by the auxiliary agent that stablizer, lubricating auxiliary agent, processing modified adjuvant, impact modifier are formed;
(2) graphitized carbon black is handled with coupling agent;
(3) all raw materials with step (1) and (2) carry out the gross weight detection, if undesirable, then each component are carried out taxonomic revision, and return step (1), if gross weight meets the requirements, then carry out step (4);
(4) all raw materials are carried out following operation successively:
High temperature kneading, cold mixed cooling, discharge, enter forcing machine, heating plasticizing, extrude, cooling and shaping, traction, cutting;
(5) packing of the coffin after will cutting warehouse-in is finished.
Between described step (4) and the step (5), also comprise the tubing after the cutting is carried out quality inspection, then scrap broken the recovery as defective.
Below by two specific embodiments the present invention is made more detailed explanation.
According to the listed component ratio weighing of following table 1, add in the mixing machine, be mixed into about 110 and change cold mixing over to when spending, be cooled to about 45 degree dischargings, obtain basic mixed ingredients uniformly.Then the mixed ingredients of gained is extruded the colliery pvc pipe of diameter 63 specifications, 0.8MPa pressure rating through forcing machine.
Table 1
| Embodiment 1 | Embodiment 2 | ||
| Polyvinyl chloride resin | 100 | Polyvinyl chloride resin | 100 |
| One package stabilizer 50960 | 4 | One package stabilizer 50960 | 4.5 |
| MBS class anti-impact modifier | 12 | ACR class anti-impact modifier | 14 |
| Processing aids acrylic resin | 2.5 | Processing aids acrylic resin | 3 |
| Oxidic polyethylene (lubricant) | 0.5 | Oxidic polyethylene (lubricant) | 0.5 |
| PE wax (lubricant) | 1.2 | PE wax (lubricant) | 1.5 |
| Graphitized carbon black | 10 | Graphitized carbon black | 15 |
| Coupling agent | 0.5 | Coupling agent | 2 |
| Epoxy soybean oil | 2.5 | Epoxy soybean oil | 3 |
The tubing that obtains is carried out various salient features tests, as shown in table 2 below:
Table 2
| Test | Embodiment 1 | Embodiment 2 |
| Outward appearance (visual) | Black | Black |
| Flat (being depressed into caliber 1/2) | Crack-free, nothing are destroyed | Crack-free, nothing are destroyed |
| Tensile yield strength MPa (GB/T 8804.2-2003) | 40.3 | 37.5 |
| Surface resistivity (MT 181) | 5.8×10 5 | 2.7×10 4 |
| Drop impact (MT 558.2-2005) | 10/10 nothing is broken | 10/10 nothing is broken |
| Alcohol blast burner combustion test (MT 181) | ＜3 seconds | ＜3 seconds |
| Hydrostatic (20 ℃, 100h) | Do not have leakage, do not have and destroy | Do not have leakage, do not have and destroy |
。
Claims (8)
1, a kind of preparation raw material of polyvinylchloride antistatic pipes is characterized in that being made up of the component of following parts by weight:
Polyvinyl chloride resin powder 100
Stablizer 3.5-5
Lubricating auxiliary agent 1-2
Processing modified adjuvant 1-3
Impact modifier 5-12
Graphitized carbon black 5-15
Coupling agent 0.25-1.5.
2, the preparation raw material of polyvinylchloride antistatic pipes according to claim 1 is characterized in that described lubricating auxiliary agent adopts one or more of polyolefine, paraffin of low-molecular-weight polyolefin, oxidation compound.
3, the preparation raw material of polyvinylchloride antistatic pipes according to claim 1 is characterized in that described impact modifier comprises core-shell polymer.
4, the preparation raw material of polyvinylchloride antistatic pipes according to claim 1 is characterized in that described carbon black is a graphitized carbon black, adopts powdery or particulate state.
5, a kind of preparation method of polyvinylchloride antistatic pipes is characterized in that the described raw material of claim 1, by the cold mixed back extrusion moulding of the mixed low speed of heat at a high speed, obtains antistatic, flame-proof polyvinyl chloride colliery tubing.
6, the preparation method of polyvinylchloride antistatic pipes according to claim 5 is characterized in that specifically comprising the steps:
(1) mixes with the polyvinyl chloride resin powder with by the auxiliary agent that stablizer, lubricating auxiliary agent, processing modified adjuvant, impact modifier are formed;
(2) graphitized carbon black is handled with coupling agent;
(3) all raw materials with step (1) and (2) carry out the gross weight detection, if undesirable, then each component are carried out taxonomic revision, and return step (1), if gross weight meets the requirements, then carry out step (4);
(4) all raw materials are carried out following operation successively:
High temperature kneading, cold mixed cooling, discharge, enter forcing machine, heating plasticizing, extrude, cooling and shaping, traction, cutting;
(5) packing of the coffin after will cutting warehouse-in is finished.
7, the preparation method of polyvinylchloride antistatic pipes according to claim 6, when the graphitized carbon black that it is characterized in that described step (2) need be used coupling agent treatment, the adding umber of coupling agent was the 5%-10% of graphitized carbon black amount.
8, according to the preparation method of claim 6 or 7 described polyvinylchloride antistatic pipes, it is characterized in that between described step (4) and the step (5), also comprise the tubing after the cutting is carried out quality inspection, then scrap broken the recovery as defective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200910038023 CN101575436A (en) | 2009-03-19 | 2009-03-19 | Raw material and method for preparing polyvinylchloride antistatic pipes |
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| CN 200910038023 CN101575436A (en) | 2009-03-19 | 2009-03-19 | Raw material and method for preparing polyvinylchloride antistatic pipes |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286180A (en) * | 2010-06-17 | 2011-12-21 | 陈明 | Antistatic flame retardant UPVC (Unplasticised Polyvinyl Chloride ) communication tube |
| CN102786754A (en) * | 2012-09-04 | 2012-11-21 | 宁夏青龙塑料管材有限公司 | Flame retardant antistatic toughening PVC (Poly Vinyl Chloride) pipe for methane |
| CN102863710A (en) * | 2011-07-06 | 2013-01-09 | 中国石油化工股份有限公司 | Three-layer co-extrusion PVC-M tubular product for coal mine |
| CN104312039A (en) * | 2014-10-14 | 2015-01-28 | 上海远洲管业科技股份有限公司 | Preparation method of heat-fusible modified polyvinyl chloride (PVC) pipe |
| CN104514928A (en) * | 2013-09-29 | 2015-04-15 | 潍坊市精达塑料机械有限公司 | PVC anti-static plastic-enhanced corrugated hose and preparation method thereof |
| CN107129646A (en) * | 2017-06-07 | 2017-09-05 | 太仓市龙华塑胶有限公司 | A kind of conductive plastic |
| CN108690277A (en) * | 2017-04-11 | 2018-10-23 | 合肥杰事杰新材料股份有限公司 | A kind of polychloroethylene composition material and preparation method thereof |
| CN109721877A (en) * | 2017-10-31 | 2019-05-07 | 合肥杰事杰新材料股份有限公司 | A kind of polychloroethylene composition material and preparation method thereof |
-
2009
- 2009-03-19 CN CN 200910038023 patent/CN101575436A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286180A (en) * | 2010-06-17 | 2011-12-21 | 陈明 | Antistatic flame retardant UPVC (Unplasticised Polyvinyl Chloride ) communication tube |
| CN102863710A (en) * | 2011-07-06 | 2013-01-09 | 中国石油化工股份有限公司 | Three-layer co-extrusion PVC-M tubular product for coal mine |
| CN102863710B (en) * | 2011-07-06 | 2014-10-15 | 中国石油化工股份有限公司 | Three-layer co-extrusion PVC-M tubular product for coal mine |
| CN102786754A (en) * | 2012-09-04 | 2012-11-21 | 宁夏青龙塑料管材有限公司 | Flame retardant antistatic toughening PVC (Poly Vinyl Chloride) pipe for methane |
| CN102786754B (en) * | 2012-09-04 | 2014-08-06 | 宁夏青龙塑料管材有限公司 | Flame retardant antistatic toughening PVC (Poly Vinyl Chloride) pipe for methane |
| CN104514928A (en) * | 2013-09-29 | 2015-04-15 | 潍坊市精达塑料机械有限公司 | PVC anti-static plastic-enhanced corrugated hose and preparation method thereof |
| CN104312039A (en) * | 2014-10-14 | 2015-01-28 | 上海远洲管业科技股份有限公司 | Preparation method of heat-fusible modified polyvinyl chloride (PVC) pipe |
| CN108690277A (en) * | 2017-04-11 | 2018-10-23 | 合肥杰事杰新材料股份有限公司 | A kind of polychloroethylene composition material and preparation method thereof |
| CN107129646A (en) * | 2017-06-07 | 2017-09-05 | 太仓市龙华塑胶有限公司 | A kind of conductive plastic |
| CN109721877A (en) * | 2017-10-31 | 2019-05-07 | 合肥杰事杰新材料股份有限公司 | A kind of polychloroethylene composition material and preparation method thereof |
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