CN1181130C - High-performance chlorinated polyvinyl chloride plastic - Google Patents
High-performance chlorinated polyvinyl chloride plastic Download PDFInfo
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- CN1181130C CN1181130C CNB011271450A CN01127145A CN1181130C CN 1181130 C CN1181130 C CN 1181130C CN B011271450 A CNB011271450 A CN B011271450A CN 01127145 A CN01127145 A CN 01127145A CN 1181130 C CN1181130 C CN 1181130C
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- polyvinyl chloride
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Abstract
The present invention relates to a high performance chlorinated polyvinyl chloride plastic which belongs to a macromolecular material, particularly to a modified plastic of chlorinated polyvinyl chloride. The present invention is composed of 100 parts by weight of chlorinated polyvinyl chloride, 160 to 2 parts by weight of polyvinyl chloride, 4 to 12 parts by weight of a composite lead stabilizer with a lubricating system, 2 to 14 parts by weight of an impact modifier of a methacrylate ester class, 0.9 to 0.05 parts by weight of polyethylene wax which is partially oxidized and 0.05 to 80 parts by weight of active light weight CaCO3. The present invention has the advantages of favorable physical and chemical performance, good chemical stability, high temperature resistance, corrosion resistance, good flame retardancy, high impact strength, weather resistance, good ultraviolet resistance and low cost. The price of the present invention is 1/2 of the price of import chlorinated polyvinyl chloride, and is 2/3 of the price of home-made chlorinated polyvinyl chloride, and therefore, a pipe, a plate, a film, a profiled bar, a bar and other products which are made from the present invention are widely used in various industries.
Description
Technical field
The invention belongs to the modified plastics of high molecule plastic material, particularly chlorinated polyvinyl chloride, relate to its composition, process control parameter, the physico-chemical parameter of material.
Background technology
In industry, agricultural, mine, communication, electric power, building, environmental protection and human daily life, utilize plastics and goods thereof to obtain a large amount of application, for example, it is very extensive to carry liquids and gases to use with plastic conduit, advantages such as in light weight, corrosion-resistant and easy installation that plastic pipe has, its application has obtained development at full speed.And present plastics mainly based on polyvinyl chloride (PVC), polyethylene (PE), ABS, etc.But, the major defect of polyvinyl chloride is that heat resisting temperature is not high, the long term operation temperature can not be above 60 ℃, and rising along with temperature, its over-all properties can descend, and its oxygen index is 35～38%, though good flame self-extinguishing energy is arranged, but smog index is higher, so the conveying that is used for the high temperature strong corrosion medium is reached there being fire-fighting to require occasion just can not use; Poly disadvantage is can not be fire-retardant, and burning back material meeting band flame drippage itself, and in addition, its physical strength is on the low side, only is 25～40% of polyvinyl chloride; Impact-resistance and the thermotolerance of ABS are better, but its weathering resistance is poor, and be easily oxidated and degrade under action of ultraviolet ray, and therefore, it was outdoor exposure six months, and its resistance to impact shock can descend more than 45%, and meets fire and can not put out certainly.Therefore, the occasion that they are used is subjected to the influence of factors such as high temperature, high corrosive medium and climatope, is difficult to further develop.In the recent period, chlorinated polyvinyl chloride plastic is better used, because of its oxygen index up to 50～60%, smog index is less than 25, Vicat softening point is 110～120 ℃, and physical strength is bigger by about 25% than polyvinyl chloride, and it also has excellent weathering resistance, anti-ultraviolet aging and chemical stability, therefore, it can be widely used in industries such as the chemical industry of occasions such as some high temperature, strong corrosive medium, extreme climate environment, oil, medicine, electric power, building.But, its shortcoming is that its melt viscosity is more than two times of polyvinyl chloride at least, friction between itself and processing units is increased, the heat of friction that is produced increases because of thermolysis and produces a large amount of hydrogen chloride gas, cause machine-shaping difficulty and heavy corrosion processing units, difficulty of processing increases, and is difficult for processing; Its low temperature brittleness is than polyvinyl chloride height, and shock resistance is poor; Its price is 3～4 times of polyvinyl chloride, the price height.These use these goods to bring difficulty to being processed into various goods.
Summary of the invention
It is low to the objective of the invention is to produce a kind of cost, easily processing, and the shock resistance height, the physical strength height, the heat resisting temperature height, chemical stability is good, chlorinated polyvinyl chloride plastic of weathering resistance, anti-ultraviolet aging and preparation method thereof.
The technical scheme that realizes the object of the invention is that chlorinated polyvinyl chloride is carried out modification, and it is characterized in that: it contains following component, and weight ratio is:
Chlorinated polyvinyl chloride 100
Polyvinyl chloride 100～2
Band lubricating system compound lead stabilizer 4～12
Methyl acrylic ester impact modifier＞5～14
The polyethylene wax 0.9～0.05 of partial oxidation
Active light CaCo3 0.05～80
In above-mentioned composition, the effect of polyvinyl chloride and active light CaCo3 mineral filler is the cost that reduces high-performance chlorinated polyvinyl chloride under the condition that does not change the chlorinated polyvinyl chloride performance; The effect of band lubricating system compound lead stabilizer is the thermolysis phenomenon that is produced because of the height friction to overcome; The effect of the polyethylene wax of partial oxidation be with control the intermolecular friction of chlorinated polyvinyl chloride and and processing units between friction, thereby overcome the melt fracture and the high heat of friction that in the course of processing, very easily produce, high-performance chlorinated polyvinyl chloride plastic is easily processed; The effect of methyl acrylic ester impact modifier is to overcome the low temperature brittleness of chlorinated polyvinyl chloride, to improve shock resistance.So, performances such as physical strength height, heat resisting temperature height, the chemical stability that high-performance chlorinated polyvinyl chloride not only has chlorinated polyvinyl chloride is good, weathering resistance, anti-ultraviolet aging, simultaneously, also have advantages such as low cost, easily processing, low-temperature impact resistance are good.
Its technical process of the chlorinated polyvinyl chloride plastic of above-mentioned component is:
Raw material → high-speed mixing → low speed cold mixing → the twin screw extruder of above-mentioned component is extruded → extrusion die moulding → vacuum cooling typing → spray cooling → traction → fixed length cutting → enlarging → check → the packing warehouse-in.
Its processing parameter is:
One, temperature controlling range:
1, high-speed mixing is 110 ° ℃～130 ℃
2, the low speed cold mixing is 40 ℃～50 ℃
3, twin screw extruder barrel:
(I) district is 180 ℃～205 ℃
(II) district is 175 ℃～200 ℃
(III) district is 170 ℃～195 ℃
(IV) district is 170 ℃～195 ℃
(V) district is 160 ℃～185 ℃
(VI) district is 160 ℃～175 ℃
150 ℃～175 ℃ of merging cores
4, twin screw extruder screw rod oil temperature is 80 ℃～130 ℃
5, extrusion die moulding:
(I) district is 150 ℃～175 ℃
(II) district is 170 ℃～195 ℃
(III) district is 175 ℃～195 ℃
(IV) district is 180 ℃～210 ℃
140 ℃～180 ℃ of plug internal heating
Two, vacuum degree control scope:
1, twin screw extruder 0.02Mpa～0.08Mpa
2, vacuum sizing cover 0.02Mpa～0.08Mpa
3, vacuum cooling water tank 0.0150Mpa～0.06Mpa
In above-mentioned art production process, it is slower plasticizing process to occur when the relatively poor twin screw extruder of use properties is produced, and plasticizing quality is poor, influence product performance, therefore, need in above-mentioned component, can add simultaneously acrylate modifier and hard ester acid, also can add wherein a kind of separately.They can be separated into the reticulated structure unit less than 0.01 μ m in the chlorinated polyvinyl chloride melt, and can be uniformly distributed between the chlorinated polyvinyl chloride minuteness particle, to reduce plasticization temperature and gel time, control melt fracture phenomenon, accelerate plasticizing process, improve plasticizing quality, its weight ratio consumption is a chlorinated polyvinyl chloride: acrylate modifier=100: 0.01～14, chlorinated polyvinyl chloride: hard ester acid=100: 0.01～1.5.
Main physical and chemical performance index by above-mentioned technical scheme chlorinated polyvinyl chloride plastic of the present invention can reach:
Shock strength 〉=12 KJ/m
2
90～120 ℃ of Vicat softening points
Oxygen index 50～60%
Because chlorinated polyvinyl chloride plastic of the present invention has good physical and chemical performance, chemical stability is good, and is high temperature resistant, corrosion-resistant, good flame resistance, and physical strength, excellent in cushion effect, weathering resistance, uvioresistant are good.In addition, its cost is low, and price is 1/2 of an import chlorinated polyvinyl chloride, 2/3 of homemade chlorinated polyvinyl chloride, and therefore, the tubing of making, sheet material, film, profiled material, bar and the goods that fill thereof are used in all types of industries widely.For example, oil collection in the petroleum industry is failed used pipeline, the pipeline and the equipment of the high temperature corrosion medium transport in chemistry, the medicine industry, high pressure in the power industry, ultrahigh voltage power handling cable pillar, can also be applied to the material that strict fire-fighting requirement occasion uses and pack, field such as building decoration, traffic facilities.
Embodiment
Embodiment with the production of chlorinated polyvinyl chloride plastic tubing is illustrated below;
Embodiment 1: Wei card Ruanization Dian reaches 120 ℃
The weight ratio of component composition:
Chlorinated polyvinyl chloride 100
Polyvinyl chloride 11.1
Band lubricating system compound plumbous 8.89
Methyl acrylic ester impact modifier 8.89
The polyethylene wax 0.02 of partial oxidation
Active light CaCo3 3.33
Above-mentioned component is made tubing through following technological process:
Component raw material → high-speed mixing → low speed cold mixing → twin screw extruder is extruded → extrusion die moulding → vacuum cooling typing → spray cooling → traction → fixed length cutting → enlarging → check → packing warehouse-in.
The raw material of above-mentioned component is put into homogenizer mix, mixing temperature is controlled at 110 ℃～130 ℃; Carry out the low speed cold mixing again, the cold mixing temperature is controlled at 40 ℃～50 ℃, extrudes through twin screw extruder, and the temperature of its twin screw extruder barrel is controlled at:
(I) district is 180 ℃～205 ℃
(II) district is 175 ℃～200 ℃
(III) district is 170 ℃～195 ℃
(IV) district is 170 ℃～195 ℃
(V) district is 160 ℃～185 ℃
(VI) district is 160 ℃～175 ℃
150 ℃～175 ℃ of merging cores
And the temperature control of twin screw extruder screw rod oil is at 80 ℃～130 ℃
Temperature in the extrusion die moulding, its mould is controlled at:
(I) district is 150 ℃～175 ℃
(II) district is 170 ℃～195 ℃
(III) district is 175 ℃～195 ℃
(IV) district is 180 ℃～210 ℃
140 ℃～180 ℃ of plug internal heating
Two, vacuum degree control scope (Mpa):
1, twin screw extruder 0.02～0.08
Vacuum sizing cover 0.02～0.08
Vacuum cooling water tank 0.0150～0.06
In the above-mentioned production process, its twin screw extruder adopts the good equipment of performance, as adopting the bad equipment of performance, needs to add hard ester acid 0.01～1.5, and acrylate modifier 0.01～14 needs color as tubing, can add small amounts of pigment.
Embodiment 2: Vicat softening point is 110 ℃
The weight ratio of component composition:
Chlorinated polyvinyl chloride 100
Polyvinyl chloride 25
Band lubricating system compound plumbous 7.75
Methyl acrylic ester impact modifier 10
The polyethylene wax 0.375 of partial oxidation
Active light CaCo3 12.5
Other technical process and processing parameter control are equal to embodiment 1.
Embodiment 3: Vicat softening point is 105 ℃
The weight ratio of component composition:
Chlorinated polyvinyl chloride 100
Polyvinyl chloride 50
Band lubricating system compound plumbous 12.8
Methyl acrylic ester impact modifier 12
The polyethylene wax 0.9 of partial oxidation
Active light CaCo3 46
Other technical process and processing parameter control are equal to embodiment 1.
Generalized case, the temperature that increases its Vicat softening point when the ratio of polyvinyl chloride reduces, but the physical and chemical indexes of its product can both reach shock strength 〉=12KJ/m in the proportional range of composition of the present invention
2, Vicat softening point is at 90 ℃～120 ℃, and oxygen index is 50%～60%.
Claims (3)
1, a kind of chlorinated polyvinyl chloride plastic is characterized in that: it contains following component, and weight ratio is:
Chlorinated polyvinyl chloride 100
Polyvinyl chloride 100～2
Band lubricating system compound lead stabilizer 4～12
Methyl acrylic ester impact modifier＞5～14
The polyethylene wax 0.9～0.05 of partial oxidation
Active light CaCo3 0.05～80.
2, chlorinated polyvinyl chloride plastic according to claim 1, it is characterized in that: can add acrylate modifier and hard ester acid individually or simultaneously, its weight ratio consumption is a chlorinated polyvinyl chloride: acrylate modifier=100: 0.01～14, chlorinated polyvinyl chloride: hard ester acid=100: 0.01～1.5.
3, the preparation method of chlorinated polyvinyl chloride plastic according to claim 1 and 2, it is characterized in that: the raw material → high-speed mixing → low speed cold mixing → twin screw extruder by the component weight ratio is extruded → extrusion die moulding → vacuum cooling typing → spray cooling → traction, and its process control parameter is;
The high-speed mixing temperature is controlled at 110 ℃～130 ℃
Low speed cold mixing temperature is controlled at 40 ℃～50 ℃
The twin screw extruder barrel temperature is controlled at:
(I) district is 180 ℃～205 ℃
(II) district is 175 ℃～200 ℃
(III) district is 170 ℃～195 ℃
(IV) district is 170 ℃～195 ℃
(V) district is 160 ℃～185 ℃
(VI) district is 160 ℃～175 ℃
150 ℃～175 ℃ of merging cores
The temperature control of twin screw extruder screw rod oil exists: 80 ℃～130 ℃
The extrusion die mold temperature is controlled at:
(I) district is 150 ℃
(II) district is 170 ℃～195 ℃
(III) district is 175 ℃～195 ℃
(IV) district is 180 ℃～210 ℃
The vacuum degree control scope:
Twin screw extruder 0.02Mpa～0.08Mpa
Vacuum sizing cover 0.02Mpa～0.08Mpa
Vacuum cooling water tank 0.0150Mpa～0.06Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011271450A CN1181130C (en) | 2001-08-23 | 2001-08-23 | High-performance chlorinated polyvinyl chloride plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011271450A CN1181130C (en) | 2001-08-23 | 2001-08-23 | High-performance chlorinated polyvinyl chloride plastic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1332197A CN1332197A (en) | 2002-01-23 |
| CN1181130C true CN1181130C (en) | 2004-12-22 |
Family
ID=4667134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011271450A Expired - Fee Related CN1181130C (en) | 2001-08-23 | 2001-08-23 | High-performance chlorinated polyvinyl chloride plastic |
Country Status (1)
| Country | Link |
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| CN (1) | CN1181130C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101747514B (en) * | 2008-12-11 | 2011-10-19 | 上海汤臣塑胶实业有限公司 | Method for preparing mixed ingredients of chlorinated polyvinyl chloride and rigid polyvinyl chloride |
| CN102134360B (en) * | 2011-05-10 | 2012-06-06 | 上海远洲管业有限公司 | Preparation method of super-strong high temperature-resistant chlorinated polyvinyl chloride tubes |
| EP2615137B2 (en) * | 2012-01-13 | 2018-03-28 | Georg Fischer DEKA GmbH | Polyvinyl chloride compound, tube, gutter or container, use of a PVC compound and use of a tube, gutter or container |
| CN102604289B (en) * | 2012-02-27 | 2014-04-16 | 成都易信达科技有限公司 | Chlorinated polyvinyl chloride (CPVC) cable conduit |
| CN102964721B (en) * | 2012-11-28 | 2015-08-05 | 安徽玉发塑业有限公司 | A kind of chlorinated polyvinyl chloride tubes |
| CN103351560A (en) * | 2013-07-11 | 2013-10-16 | 安徽玉发塑业有限公司 | CPVC (Chlorinated Polyvinyl Chloride) pipe |
| CN103642162A (en) * | 2013-12-04 | 2014-03-19 | 安徽玉发塑业有限公司 | Wear-proof chlorinated polyvinyl chloride pipe material and preparation method thereof |
| CN105255079B (en) * | 2015-11-04 | 2017-10-20 | 安徽瑞丰管业有限公司 | A kind of chlorinated polyvinyl chloride tubes and preparation method thereof |
| CN105348844A (en) * | 2015-11-13 | 2016-02-24 | 安徽广源科技发展有限公司 | A method of preparing high-hardness heat-resistant plastic by utilization of plastic waste of electric appliances |
| CN107383748A (en) * | 2017-07-25 | 2017-11-24 | 安徽胜利精密制造科技有限公司 | A kind of notebook computer casing processing anti-impact modifier and preparation method thereof |
| CN108047616A (en) * | 2017-12-26 | 2018-05-18 | 宜兴市光辉包装材料有限公司 | A kind of hot filling modified PVC thermal contractive label membrane preparation method |
| CN113667249A (en) * | 2021-08-27 | 2021-11-19 | 山东高信化学股份有限公司 | High-strength high-temperature-resistant chlorinated polyvinyl chloride bar and preparation method thereof |
-
2001
- 2001-08-23 CN CNB011271450A patent/CN1181130C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1332197A (en) | 2002-01-23 |
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Granted publication date: 20041222 |