CN1192450A - Method for mfg. flame-retardant and energy-saving plastic thermal-insulation cover for pipeline - Google Patents
Method for mfg. flame-retardant and energy-saving plastic thermal-insulation cover for pipeline Download PDFInfo
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- CN1192450A CN1192450A CN97101778A CN97101778A CN1192450A CN 1192450 A CN1192450 A CN 1192450A CN 97101778 A CN97101778 A CN 97101778A CN 97101778 A CN97101778 A CN 97101778A CN 1192450 A CN1192450 A CN 1192450A
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- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
A plastic insulating hood is made by using polyethylene, polyethylene vinyl acetate etc. as main material as well as fire retardant, foaming agent bridgeing agent and other additives. The plastic insulating hood produced possesses the characteristics of water resistance, fire retardancy, low temp. resistance and light weight. It has no irritation to human body and is not easy to be deformed.
Description
The present invention relates to conduct the improvement of the outer lagging material of hot and cold medium pipeline, particularly have the plastic thermal-insulation cover of fire-retardant, waterproof, low temperature resistant, save energy.
At present; conduct the outer lagging material of hot and cold medium pipeline and be coctostable substances such as glass fibre, asbestos, perlite powder are enclosed in around the pipeline with sheet metal; its shortcoming is the sheet metal processed complex; involve great expense; the water-absorbent of coctostable substances such as glass fibre, asbestos, perlite powder is strong, and life cycle is short, easily modification; particularly human body there is hormesis, is unfavorable for environment protection.
The objective of the invention is at above-mentioned shortcoming, develop a kind of based on polyethylene, plastic of poly vinyl acetate etc., and press technical recipe, add additives such as fire retardant, whipping agent, bridging agent, make the plastic thermal-insulation cover of making have anti-water, fire-retardant, low temperature resistant, in light weight, human body is had no stimulation, be not easy modification.Because skin does not adopt sheet metal, so reduce cost, easy construction.Good heat insulating, save energy, enabling environment protection.
The objective of the invention is to realize by following production sequence and technical recipe:
1, banburying
At first in proportion polyethylene and plastic of poly vinyl acetate are added in the Banbury mixer, under 100-140 ℃ of temperature, heating and mixing add other batching in the Banbury mixer after 10-30 minute in proportion, further keep heating and mixing 5-20 minute, become homogeneous mixture by a certain percentage.
2, open refining
Above-mentioned mixture is added in the mill,, make material molecule key in the mixture produce to compress and mix through 100-140 ℃ of temperature hot-pressing processing 5-20 minute.
3, quantitatively, insulation
After mixture behind the uniform mixing pressed certainweight cutting, put into Warming machine, insulation is 5-20 minute in 100-140 ℃ of temperature, makes cutting body keep the temperature of processing requirement.
4, foaming
The cutting body of insulation is sent into the primary oil pressure foaming machine, and 120-170 ℃ of temperature, the effect of 3-6 kilogram pressure keeps 20-60 branch clock time to make it produce bridging action down, decontrols oil press then rapidly, makes and is pressed body to expand rapidly.Behind the cutting corner, send into again in time mechanical foaming machine, carry out the bridging action second time, under 130-170 ℃ of temperature, after process 20-60 divides clock time, finish second time of foaming, with being water-cooled to 30-60 ℃.
5, cutting, moulding
Through after second time of foaming, of the specification cutting of cooled plastic body by customer need, send into tubing machine, behind the hot melt cooling forming, put into 80-100 ℃ of temperature tank and heat, 5-15 minute, make product reduce internal stress.
Formula for raw stock of the present invention is as follows:
Polyethylene 50-90%
Plastic of poly vinyl acetate 5-20%
Whipping agent 8-25%
Zinc white 0.05-10%
The strong powder 0.5-5% of magnesium
Look female 0.1-5%
Decabromodiphynly oxide 5-15%
Chlorinated paraffin 0.5-5%
Antimonous oxide 5-15%
Owing to adopt above-mentioned technical process and prescription to produce, make product have fire-retardant, waterproof, be not easy modification, human body is had no stimulation, effectively overcome the above-mentioned shortcoming of general heat insulation material, make easy construction.
In conjunction with the embodiments, further describe technology making method of the present invention:
Take by weighing 5 kilograms of polyethylene, 0.5 kilogram of polyethylene vinyl acetate between to for plastic acid, add in the Banbury mixer after mixing 20 minutes under 120 ℃ of temperature, add 1.2 kilograms of whipping agents, 0.016 kilogram of zinc white, 0.065 kilogram in the strong powder of magnesium, 0.16 kilogram of look female, 0.6 kilogram of decabromodiphynly oxide, 0.1 kilogram of chlorinated paraffin, 0.6 kilogram of antimonous oxide, keep 120 ℃ of temperature, continue to heat and mixed 10 minutes, from Banbury mixer, take out mixture, drop in the mill and after 5 minutes, put into Warming machine 120 ℃ of temperature compactings after the cutting, insulation is 10 minutes in 120 ℃ of temperature, again mixture is put into the primary oil pressure foaming machine, 150 ℃ of temperature, under 5 kilograms of pressure, pushed 35 minutes, rapid then decompress(ion), behind the cutting scrap stock, send in the secondary mechanical foaming machine, pressurization is 40 minutes in 160 ℃ of temperature again, behind the decompress(ion) with being water-cooled to 50 ℃, by after the market requirement specification cutting, send with in the tubing machine hot melt again the plastic body after the foaming, cooling becomes tubular-type.Typing is after 5-10 minute in the hot water of 90 ℃ of temperature, and the packing of product is dispatched from the factory.
Claims (1)
1, flame-retardant and energy-saving plastic thermal-insulation cover for pipeline making method is characterized in that above-mentioned making method realizes by following prescription and production sequence:
Formula for raw stock of the present invention is as follows:
Polyethylene 50-90%
Plastic of poly vinyl acetate 5-20%
Whipping agent 8-25%
Zinc white 0.05-10%
The strong powder 0.5-5% of magnesium
Look female 0.1-5%
Decabromodiphynly oxide 5-15%
Chlorinated paraffin 0.5-5%
Antimonous oxide 5-15%
Production sequence of the present invention is as follows:
(1) banburying
At first in proportion polyethylene and plastic of poly vinyl acetate are added in the Banbury mixer, under 100-140 ℃ of temperature, heating and mixing add other batching in the Banbury mixer after 10-30 minute in proportion, further keep heating and mixing 5-20 minute, become homogeneous mixture by a certain percentage;
(2) open refining
Above-mentioned mixture is added in the mill 100-140 ℃ of temperature hot-pressing processing of process 5-20 minute;
(3) quantitatively, insulation
After mixture pressed certainweight cutting, put into Warming machine, insulation is 5-20 minute in 100-140 ℃ of temperature, makes cutting body keep the temperature of processing requirement;
(4) foaming
The cutting body of insulation is sent into the primary oil pressure foaming machine, 120-170 ℃ of temperature, the effect of 3-6 kilogram pressure keeps 20-60 to divide clock time down, decontrols oil press then rapidly, make and pressed body to expand rapidly, behind the cutting corner, send into again in the secondary mechanical foaming machine, carry out the pressurization second time, under 130-170 ℃ of temperature, after process 20-60 divides clock time, finish second time of foaming, with being water-cooled to 30-60 ℃;
(5) cutting, moulding
Through after second time of foaming, of the specification cutting of cooled plastic body by customer need, send into tubing machine, behind the hot melt cooling forming, put into 80-100 ℃ of temperature tank and heat 5-15 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97101778A CN1192450A (en) | 1997-03-01 | 1997-03-01 | Method for mfg. flame-retardant and energy-saving plastic thermal-insulation cover for pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97101778A CN1192450A (en) | 1997-03-01 | 1997-03-01 | Method for mfg. flame-retardant and energy-saving plastic thermal-insulation cover for pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1192450A true CN1192450A (en) | 1998-09-09 |
Family
ID=5165984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97101778A Pending CN1192450A (en) | 1997-03-01 | 1997-03-01 | Method for mfg. flame-retardant and energy-saving plastic thermal-insulation cover for pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1192450A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885240A (en) * | 2010-04-02 | 2010-11-17 | 海洋王照明科技股份有限公司 | Posttreatment method for extrusion-molded polycarbonate thin wall |
| CN104448743A (en) * | 2014-12-02 | 2015-03-25 | 福州友星生物科技有限公司 | Biodegradable material and preparation method thereof |
-
1997
- 1997-03-01 CN CN97101778A patent/CN1192450A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885240A (en) * | 2010-04-02 | 2010-11-17 | 海洋王照明科技股份有限公司 | Posttreatment method for extrusion-molded polycarbonate thin wall |
| CN101885240B (en) * | 2010-04-02 | 2014-06-11 | 海洋王照明科技股份有限公司 | Posttreatment method for extrusion-molded polycarbonate thin wall |
| CN104448743A (en) * | 2014-12-02 | 2015-03-25 | 福州友星生物科技有限公司 | Biodegradable material and preparation method thereof |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |