CN103275287A - Method for producing polyurethane elastomer - Google Patents
Method for producing polyurethane elastomer Download PDFInfo
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- CN103275287A CN103275287A CN2013102109057A CN201310210905A CN103275287A CN 103275287 A CN103275287 A CN 103275287A CN 2013102109057 A CN2013102109057 A CN 2013102109057A CN 201310210905 A CN201310210905 A CN 201310210905A CN 103275287 A CN103275287 A CN 103275287A
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- polyurethane elastomer
- fragment
- butyleneglycol
- polyvalent alcohol
- fusing
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Abstract
The invention discloses a method for producing a polyurethane elastomer. The method comprises the following steps of: (1) mixing molten 1,4-butanediol and EA polyhydric alcohol; (2) melting isocyanate; (3) mixing a mixed solution of the 1,4-butanediol and the EA polyhydric alcohol and an isocyanate solution according to the mass ratio of 62:38, pouring the mixed solution into an accumulating chamber, placing the mixed solution into an oven for baking at the temperature of 110-130 DEG C for 18-22min to cake and form, taking out the formed block, and cooling the formed block to the room temperature; (4) cutting the cooled formed block into fragments, mixing the fragments and an antioxidant according to the proportion of 100:1 to 100:3, heating and drying; and (5) melting and extruding the dried fragments by using a screw extruder, slitting the extruded material to be stripped by a honeycomb filter screen, then enabling the stripped material to enter cooling water, and cutting the stripped material into a polyurethane elastomer finished product by using a cutter. The method can be used for improving the transparency of the polyurethane elastomer produced by using the EA polyhydric alcohol.
Description
Technical field
The present invention relates to a kind of method of producing polyurethane elastomer, especially a kind of method for producing urethane elastomer cheaply.
Background technology
1936, Germanization scholar Otto. Bayer (Otto Bayer) synthesizes the polymer that segment contains the carbamate characteristic group in the polyaddition reaction process of research isocyanic ester.Because urethane has good comprehensive physicals, can make the product of different purposes such as elastomerics, coating, fiber, glue paste, therefore between decades after this, the polyurethane industrial development is very rapid, has become one of the world's five big plastics at present.
Yet polyurethane elastomer requires high-clarity usually, to use the EBA polyvalent alcohol just can be effective by traditional working method, but EBA polyvalent alcohol price comparison height, if the polyurethane elastomer of working it out with the cheap EA polyvalent alcohol of price comparison is translucent, can not reach the requirement of transparency.
Summary of the invention
The present invention is directed to the prior art deficiency, a kind of method of producing polyurethane elastomer is provided, the polyurethane elastomer that adopts this method to process with the EA polyvalent alcohol can reach the transparency of the polyurethane elastomer that processes with the EBA polyvalent alcohol with traditional technology.
A kind of method of producing polyurethane elastomer may further comprise the steps: 1) 1,4-butyleneglycol is melted, with 1 of fusing, the 4-butyleneglycol joins and is heated to 80 ℃ to 100 ℃ in the EA polyvalent alcohol and stirred 40 minutes, and is described 1, and the mass ratio of 4-butyleneglycol and described EA polyvalent alcohol is 50:12.
2) the isocyanic ester fusing is obtained isocyanic ester liquid and is heated to 60 ℃ to 70 ℃.
3) with 1, the 4-butyleneglycol mixes with mass ratio 62:38 with isocyanic ester liquid with the mixed solution of EA polyvalent alcohol and is poured into cavity volume, and the temperature baking that puts it in the baking box with 110 ℃ to 130 ℃ made its caking moulding in 18 to 22 minutes, the forming blocks material taken out be cooled to normal temperature.
4) the forming blocks material with cooling is cut into fragment, and fragment and antioxidant are pressed 100:1 to 100:3 Hybrid Heating drying.
5) dried fragment is extruded with screw extrusion press fusing, the material of extruding cuts into strip through the honeycomb filtering net and enters in the water coolant, with cutting knife the material of strip is cut into the finished product polyurethane elastomer.Adopt this method can improve the transparency of the polyurethane elastomer of producing with the EA polyvalent alcohol.
In the technique scheme, described cavity volume is the rectangular parallelepiped of 35cm * 55cm * 3cm.The mixed solution of 1,4-butyleneglycol and EA polyvalent alcohol is toasted with the rectangular parallelepiped cavity volume of putting into 35cm * 55cm * 3cm after isocyanic ester liquid mixes, the cavity volume of this shape be of moderate size make baking comparison evenly and to be unlikely to efficient too low.
In the technique scheme, described fragment and antioxidant heat drying condition are 80 ℃ of heating rotations 4 hours.
In the technique scheme, described fragment and antioxidant heat drying condition are 100 ℃ of heating rotations 2 hours.
The present invention compared with prior art has following beneficial effect: the polyurethane elastomer that the present invention adopts this method to process with the EA polyvalent alcohol can reach the transparency of the polyurethane elastomer that processes with the EBA polyvalent alcohol with traditional technology.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.
A kind of method of producing polyurethane elastomer may further comprise the steps: 1) 1,4-butyleneglycol is melted, with 1 of fusing, the 4-butyleneglycol joins and is heated to 80 ℃ to 100 ℃ in the EA polyvalent alcohol and stirred 40 minutes, and is described 1, and the mass ratio of 4-butyleneglycol and described EA polyvalent alcohol is 50:12.
2) the isocyanic ester fusing is obtained isocyanic ester liquid and is heated to 60 ℃ to 70 ℃.
3) with 1, the 4-butyleneglycol mixes with mass ratio 62:38 with isocyanic ester liquid with the mixed solution of EA polyvalent alcohol and is poured into cavity volume, and the temperature baking that puts it in the baking box with 110 ℃ to 130 ℃ made its caking moulding in 18 to 22 minutes, the taking-up of forming blocks material is cooled to normal temperature, and described cavity volume is the rectangular parallelepiped of 35cm * 55cm * 3cm.The mixed solution of 1,4-butyleneglycol and EA polyvalent alcohol is toasted with the rectangular parallelepiped cavity volume of putting into 35cm * 55cm * 3cm after isocyanic ester liquid mixes, the cavity volume of this shape be of moderate size make baking comparison evenly and to be unlikely to efficient too low.
4) the forming blocks material with cooling is cut into fragment, fragment and antioxidant are pressed 100:1 to 100:3 Hybrid Heating drying, fragment and antioxidant heat drying condition are 80 ℃ of heating rotations 4 hours, and perhaps fragment and antioxidant heat drying condition are 100 ℃ of heating rotations 2 hours.
5) dried fragment is extruded with screw extrusion press fusing, the material of extruding cuts into strip through the honeycomb filtering net and enters in the water coolant, with cutting knife the material of strip is cut into the finished product polyurethane elastomer, and then with polyurethane elastomer and water sepn.
In advance preheating 1 hour before screw extrusion press is extruded is up to the material pipe, the die head heals is intact can melt, and can start screw extrusion press.When extruding, low speed 10RPM running in advance.Observe material color and luster and melt and dissolved situation, and change the honeycomb filtering net simultaneously.After draping was finished, stopping the screw extrusion press running will open screw extrusion press in the honeycomb filtering net immigration die head again.Rotating speed passes through the honeycomb filtering net with 20RPM, and notices that the material pressure can not be too high.10-20-30-50RPM is slowly accelerated in the main frame running.Rapidly dicing machine in the water is connected with discharge port after discharge port cleaned out.
The polyurethane elastomer that adopts this method to process can improve the transparency of the polyurethane elastomer of producing with the EA polyvalent alcohol.
Claims (4)
1. method of producing polyurethane elastomer, it is characterized in that, may further comprise the steps: 1) with 1, the fusing of 4-butyleneglycol, with 1 of fusing, the 4-butyleneglycol joins and is heated to 80 ℃ to 100 ℃ in the EA polyvalent alcohol and stirred 40 minutes, and is described 1, and the mass ratio of 4-butyleneglycol and described EA polyvalent alcohol is 50:12; 2) the isocyanic ester fusing is obtained isocyanic ester liquid and is heated to 60 ℃ to 70 ℃; 3) with 1, the 4-butyleneglycol mixes with mass ratio 62:38 with isocyanic ester liquid with the mixed solution of EA polyvalent alcohol and is poured into cavity volume, and the temperature baking that puts it in the baking box with 110 ℃ to 130 ℃ made its caking moulding in 18 to 22 minutes, the forming blocks material taken out be cooled to normal temperature; 4) the forming blocks material with cooling is cut into fragment, and fragment and antioxidant are pressed 100:1 to 100:3 Hybrid Heating drying; 5) dried fragment is extruded with screw extrusion press fusing, the material of extruding cuts into strip through the honeycomb filtering net and enters in the water coolant, with cutting knife the material of strip is cut into the finished product polyurethane elastomer.
2. a kind of method of producing polyurethane elastomer as claimed in claim 1, it is characterized in that: described cavity volume is the rectangular parallelepiped of 35cm * 55cm * 3cm.
3. a kind of method of producing polyurethane elastomer as claimed in claim 1 is characterized in that: described fragment and antioxidant heat drying condition are 80 ℃ of heating rotations 4 hours.
4. a kind of method of producing polyurethane elastomer as claimed in claim 1 is characterized in that: described fragment and antioxidant heat drying condition are 100 ℃ of heating rotations 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310210905.7A CN103275287B (en) | 2013-05-31 | 2013-05-31 | Method for producing polyurethane elastomer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310210905.7A CN103275287B (en) | 2013-05-31 | 2013-05-31 | Method for producing polyurethane elastomer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103275287A true CN103275287A (en) | 2013-09-04 |
| CN103275287B CN103275287B (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310210905.7A Expired - Fee Related CN103275287B (en) | 2013-05-31 | 2013-05-31 | Method for producing polyurethane elastomer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103694432A (en) * | 2013-12-14 | 2014-04-02 | 常熟市永利化工有限公司 | Production method of polyurethane elastomer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007029382A1 (en) * | 2005-09-06 | 2007-03-15 | Nippon Polyurethane Industry Co., Ltd. | Process for producing powdered thermoplastic polyurethane urea resin |
| CN102558830A (en) * | 2012-02-10 | 2012-07-11 | 上海联景高分子材料有限公司 | Preparation method of transparent film-grade thermoplastic polyurethane elastomer |
| CN102796364A (en) * | 2012-08-24 | 2012-11-28 | 奥斯汀新材料（张家港）有限公司 | SBS blending modified thermoplastic polyurethane elastomer and preparation method thereof |
-
2013
- 2013-05-31 CN CN201310210905.7A patent/CN103275287B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007029382A1 (en) * | 2005-09-06 | 2007-03-15 | Nippon Polyurethane Industry Co., Ltd. | Process for producing powdered thermoplastic polyurethane urea resin |
| CN102558830A (en) * | 2012-02-10 | 2012-07-11 | 上海联景高分子材料有限公司 | Preparation method of transparent film-grade thermoplastic polyurethane elastomer |
| CN102796364A (en) * | 2012-08-24 | 2012-11-28 | 奥斯汀新材料（张家港）有限公司 | SBS blending modified thermoplastic polyurethane elastomer and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103694432A (en) * | 2013-12-14 | 2014-04-02 | 常熟市永利化工有限公司 | Production method of polyurethane elastomer |
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| CN103275287B (en) | 2015-04-22 |
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Granted publication date: 20150422 Termination date: 20160531 |