CN1355091A - Process for preparing energy-saving insulating elastic plastic plate or cover difficult to burn for pipeline - Google Patents
Process for preparing energy-saving insulating elastic plastic plate or cover difficult to burn for pipeline Download PDFInfo
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- CN1355091A CN1355091A CN 00134756 CN00134756A CN1355091A CN 1355091 A CN1355091 A CN 1355091A CN 00134756 CN00134756 CN 00134756 CN 00134756 A CN00134756 A CN 00134756A CN 1355091 A CN1355091 A CN 1355091A
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Abstract
A fire-retarding thermoinsulating elastic plastic plate or cover for pipeline is prepared from polyethylene, polyethylene vinylacetate and aluminium hydroxide through adding fire retardant, foamer and bridging agent, ard than banburying, pugging, quantitizing, holding temp. constant, foaming, cutting and shaping. Its advantages include flame retardancy, high water and low temp. resistance, light weight, good elasticity, and low cost.
Description
The present invention relates to conduct the outer insulation material of hot and cold medium pipeline, particularly have fire prevention, waterproof, low temperature resistant, the difficult to burn for pipeline energy-saving insulating elastic plastic plate of energy savings, the preparation method of cover.
At present, the material that conducts the outer insulation of hot and cold medium is that coctostable substances such as glass fibre, asbestos, perlite powder are enclosed in around the pipeline with sheet metal, or make heat-insulation layer with inflammable foam, its shortcoming is the sheet metal processed complex, the water imbibition of coctostable substances such as glass fibre, asbestos, crushed crude pearlite is strong, and life cycle is short, easily modification, particularly human body there is spread effect, is unfavorable for environmental protection; Though inflammable foam is cheap, does not note slightly in the use and will burn, and causes fire.
The objective of the invention is at above-mentioned shortcoming, develop a kind of difficult to burn for pipeline energy-saving insulating elastic plastic plate, cover.Based on polyethylene, plastic of poly vinyl acetate and aluminium hydroxide etc., and press technical recipe, and add fireproof agent, blowing agent, bridging agent etc., make plastic, thermal-insulation plate, the cover made have anti-water, difficult combustion, low temperature resistant, in light weight, tool elasticity, human body is had no stimulation, not flexible type.Because skin does not adopt sheet metal, thus reduce cost, easy construction, good heat insulating, energy savings helps environmental protection.
The objective of the invention is to realize by following technical recipe and production routine:
One, technical recipe:
Crude material technology formula of the present invention is as follows:
Polyethylene 20-40%
Plastic of poly vinyl acetate 5-55%
Aluminium hydroxide 15-35%
Blowing agent 5-15%
Zinc Oxide 0.3-1%
The strong powder 0.3-1% of magnesium
Look female 0.3-3%
Deca-BDE 5-30%
Chlorinated paraffin 5-30%
Antimony oxide 5-30%
Bridging agent 0.3-1%
Two, technological process:
1, banburying
In above-mentioned technical recipe ratio, take by weighing the polyethylene, plastic of poly vinyl acetate and the aluminium hydroxide that adapt to output, add in the banbury, under 60 ℃ of-110 ℃ of temperature, heating, mixing 5-20 minute, other batching is added in the banbury in proportion, further keep heating, mixed 5-20 minute, become homogeneous mixture by a certain percentage.
2, open refining, quantitative
Above-mentioned mixture is added in the mill, is 40 ℃ of-100 ℃ of temperature hot-pressing processing 5-10 minute through surface temperature, makes material molecule key in the mixture produce to compress and mixes.And after pressing the constant weight cutting, row compresses and is mixed into blocks again.
3, insulation, exhaust
Even mixed mixing blocks is put into Warming machine, and insulation is 5-20 minute in 85 ℃ of-120 ℃ of temperature, makes the temperature of blocks maintenance technological requirement, and pressurization makes air discharge in the blocks.
4, foaming
The blocks of cutting of insulation is sent into the primary oil pressure foaming machine, at 120 ℃ of-170 ℃ of temperature, 150-200kg/cm
2The hydraulic press effect keeps 20-60 to divide clock time down, makes it under high pressure produce the bridge formation foaming effect, decontrols hydraulic press then rapidly, makes to be pressed rapid expansion of body to reach required thickness.Behind the cutting corner, send into again in the secondary mechanical foaming machine, carry out the foaming effect of building bridge second time, under 140 ℃ of-190 ℃ of temperature,, finish for the second time and foam through after 30-100 divides clock time, with being water-cooled to 30 ℃-60 ℃, emptying gas again.
5, cutting, moulding
In mould, taking out through second time of foaming, cooled plastic body, after the specification cutting by user's request, send into tuber, behind hot melt, the cooling forming, put into 80 ℃ of-100 ℃ of temperature tanks and add thermal finalization 5-15 minute, make product reduce internal pressure.Maybe will cut the sheet material of back and put into the cast mould through 80 ℃ of-100 ℃ of heating, becoming after the cooling has the seam stay-warm case.
Owing to adopt above-mentioned technological process and prescription to produce, make product have fire prevention, waterproof, not yielding, have elasticity, human body is had no stimulation, effectively overcome the above-mentioned shortcoming of general heat insulation material, make easy construction, close the symbol fire codes.
In conjunction with the embodiments, further describe technology preparation method of the present invention:
Take by weighing 15 kilograms of polyethylene, 5 kilograms of plastic of poly vinyl acetate, in 20 kilograms of adding banburies of aluminium hydroxide, after mixing 5 minutes under 90 ℃ of temperature, add 7.2 kilograms of blowing agents, 0.23 kilogram of Zinc Oxide, 0.2 kilogram in the strong powder of magnesium, 0.5 kilogram of look female, ten bromines, two 7 kilograms in stupid ethers, cured 1 kilogram of chlorination, 9 kilograms of antimony oxides, keep 90 ℃ of temperature, continue to heat and mixed 13 minutes, from banbury, take out mixture, drop in the mill, after 70 ℃ of surface temperatures were pressed 7 minutes, well cutting was put into Warming machine.Insulation is 5 minutes in 95 ℃ of temperature, mixture being put into the primary oil pressure foaming machine, at 145 ℃ of temperature and 160kg/cm
2Under the pressure, pushed 35 minutes rapid then decompress(ion).The cutting leftover pieces after, send into again in the secondary mechanical foaming machine, in 175 ℃ of temperature the pressurization 30 minutes, behind the decompress(ion) with being water-cooled to 50 ℃.The plastic body of foaming is cut all thickness sheet material by market demand specification, part is sent with in the tuber, hot melt, cooling become tubular-type, typing is after 5-10 minute in the hot water of 90 ℃ of temperature, sheet material after maybe will cutting is put into the cast mould, through 80 ℃ of-100 ℃ of heating, becoming after the cooling has the seam stay-warm case.
Claims (1)
1, the preparation method of difficult to burn for pipeline energy-saving insulating elastic plastic plate, cover is characterized in that: method of the present invention realizes by following technical recipe and production routine:
(1), technical recipe:
Polyethylene 20-40%
Plastic of poly vinyl acetate 5-55%
Aluminium hydroxide 15-35%
Blowing agent 5-15%
Zinc Oxide 0.3-1%
The strong powder 0.3-1% of magnesium
Look female 0.3-3%
Deca-BDE 5-30%
Chlorinated paraffin 5-30%
Antimony oxide 5-30%
Bridging agent 0.3-1%
(2), technological process:
(1), banburying
In above-mentioned technical recipe ratio, take by weighing the polyethylene, the polyethylene acetic acid that adapt to output, vinyl acetate and aluminium hydroxide, add in the banbury, under 60 ℃ of-110 ℃ of temperature, heating and mixing 5-20 minute add other batching in the banbury in proportion, further keep heating, mixed 5-20 minute, become homogeneous mixture by a certain percentage;
(2), open refining, quantitative
Above-mentioned mixture is added in the mill, is 40 ℃ of-100 ℃ of temperature hot-pressing processing 5-10 minute through surface temperature, makes material molecule key in the mixture produce to compress and mixes.And after pressing the constant weight cutting, row compresses and is mixed into blocks again;
(3), insulation, exhaust
Even mixed mixing blocks is put into Warming machine, and insulation is 5-20 minute in 85 ℃ of-120 ℃ of temperature, makes the block temperature that keeps technological requirement, and pressurization makes air discharge in the blocks;
(4), foaming
The blocks of cutting of insulation is sent into the primary oil pressure foaming machine, at 120 ℃ of-170 ℃ of temperature, 150-200kg/cm
2The oil pressure effect keeps 20-60 branch clock time to make it under high pressure produce the bridge formation foaming effect down, decontrol hydraulic press then rapidly, make and pressed rapid expansion of body to reach required thickness, behind the cutting corner, send into again in the secondary mechanical foaming machine, carry out the foaming effect of building bridge the second time, under 140 ℃ of-190 ℃ of temperature, after process 30-100 divides clock time, finish foaming for the second time, with being water-cooled to 30 ℃-60 ℃, emptying gas again;
(5), cutting, moulding
In mould, taking out through second time of foaming, cooled plastic body, after the specification cutting by user's request, send into tuber, behind hot melt, the cooling forming, put into 80 ℃ of-100 ℃ of temperature tanks and add thermal finalization 5-15 minute, make product reduce internal pressure, maybe will cut the sheet material of back and put into the cast mould through 80 ℃ of-100 ℃ of heating, becoming after the cooling has the seam stay-warm case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00134756 CN1355091A (en) | 2000-11-30 | 2000-11-30 | Process for preparing energy-saving insulating elastic plastic plate or cover difficult to burn for pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00134756 CN1355091A (en) | 2000-11-30 | 2000-11-30 | Process for preparing energy-saving insulating elastic plastic plate or cover difficult to burn for pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1355091A true CN1355091A (en) | 2002-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00134756 Pending CN1355091A (en) | 2000-11-30 | 2000-11-30 | Process for preparing energy-saving insulating elastic plastic plate or cover difficult to burn for pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255250B (en) * | 2008-04-14 | 2011-08-31 | 常州天晟新材料股份有限公司 | Ethane-vinyl acetate copolymer hole-opening foaming profile and method for manufacturing same |
-
2000
- 2000-11-30 CN CN 00134756 patent/CN1355091A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255250B (en) * | 2008-04-14 | 2011-08-31 | 常州天晟新材料股份有限公司 | Ethane-vinyl acetate copolymer hole-opening foaming profile and method for manufacturing same |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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