CN1156658A - Process for producing wood-imitation material of hard polyurethane foam - Google Patents
Process for producing wood-imitation material of hard polyurethane foam Download PDFInfo
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- CN1156658A CN1156658A CN 96118041 CN96118041A CN1156658A CN 1156658 A CN1156658 A CN 1156658A CN 96118041 CN96118041 CN 96118041 CN 96118041 A CN96118041 A CN 96118041A CN 1156658 A CN1156658 A CN 1156658A
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Abstract
A wood-like hard foam polyurathane material is made up of hard foam polyether or polyester, foaming agent, stabilizer, catalyst and smoking inhibitor through mixing with flame retardant aned polyphenylmethane polyisocyanate at 25-40 deg.C for 10-15 seconds, rapid pouring into mould which has been preheated to 40-50 deg.C, laying aside for about 15 min, and demoulding, and features high specific strength, less deformation, excellent sound isolation, flame retarding property up to B1 class in building specifications, and good machinability.
Description
The present invention relates to a kind of production technology of the macromolecular compound that obtains with the reaction beyond the carbon-to-carbon unsaturated bond, particularly a kind of production method that adopts the polyurethane rigid foam wood-like material that isocyanates obtains with having the compound bearing active hydrogen reaction.
In forest reserves anxiety, various countries to protection environment, protection green resource cry more and more higher today; the application of timber has just had certain limitation; and it is not really desirable in the application in some field; people are justing think for a long time and are developing synthetic material and substitute; and existing polyvinyl chloride (PVC), polystyrene (PS) etc.; but because of its morphotropism is bigger, and price is more expensive and unsatisfactory.Become a new family so polyurethane rigid foam wood-like material just arises at the historic moment, and will be applied in various fields because of it has a lot of premium properties.But because the production technology of polyurethane rigid foam wood-like material is different and fully not open again, so product difference aspect specific strength, morphotropism, adiabatic sound insulation, anti-flammability and other physical property is bigger, and combination property is difficult to satisfy practical requirement.
Purpose of the present invention is the production method that a kind of polyurethane rigid foam wood-like material is provided, and makes that material and the product produced with the method have the specific strength height, morphotropism is little, adiabatic and sound insulation value is good, fire resistance reaches other good physical properties well.
The solution that the present invention adopts is, earlier with rigid-foam polyether or polyester, blowing agent, stabilizing agent, catalyst, the inhibitor mixed of being fuming becomes the combination material, add fire retardant then, mixed about 10 to 15 seconds with many phenylmethanes polyisocyanates (PAPI) high-speed stirred under about 25 ℃ to 40 ℃ temperature again, then casting fast in being preheating to 40 ℃ to 50 ℃ mould, opening mold after about 15 minutes is placed in the casting back, can obtain polyurethane rigid foam wood-like material layered product by mould shape, after the layered product demoulding, through finishing, washing, technical process such as spray paint is finished product.
Main synthesis mechanism of the present invention is as follows.
(1) isocyanates and hydroxyl reaction
Polyisocyanates and rigid-foam polyether or pet reaction generate polyurethanes
(2) allophanate reaction
Hydrogen in the carbamate groups on the nitrogen-atoms and isocyanate reaction form allophanate
(3) biuret reaction
Hydrogen in the urea groups on the nitrogen-atoms and isocyanate reaction form biuret
Because of above organic chemical reactions carries out simultaneously, can only express with top three fundamental reaction formulas.Forming the bubble principle is to cause outer blowing agent (as F11, pentane etc.) gasification formation abscess because of above-mentioned exothermic heat of reaction.
The polyurethane rigid foam wood-like material of producing with production method of the present invention has following characteristics: the specific strength height, morphotropism is little, adiabatic, sound insulation value is good, can reach building B1 level by the modified flame-retardant performance, and have good saw, brill, nail, plane, processing characteristics such as sticking, and the product of the various embossment artistic patterns of mouldable one-tenth.The performance indications of product can reach (with density 150kg/m
3Be example): hot strength, 36Kg/cm
2Percentage elongation, 7.5%; Bending strength, 90Kg/cm
2Compression strength, 66kg/cm
2And, by adjusting different densities, can draw the product of varying strength, as ornamental strip, building elements such as decorative panel, cell mount, furniture and door, window.
Rigid-foam polyether in the inventive method or polyester can adopt glass fibre to strengthen, blowing agent can adopt F-11 (F11), and stabilizing agent can adopt silicon foams, and catalyst can adopt stannous octoate and triethylene diamine, fire retardant can adopt DMMP, and the inhibitor of being fuming can adopt fumaric acid.
Embodiment: rigid-foam polyether (glass fibre enhancing), 100 weight portions; Many phenylmethanes polyisocyanates (PAP1), 150 weight portions; Freon-11,10 weight portions; The silicon foams stabilizing agent, 1 weight portion; Stannous octoate, 0.3 weight portion: triethylene diamine, 0.5 weight portion; DMMP, 6 weight portions; Fumaric acid, 28 weight portions.
Claims (3)
1, a kind of production method of polyurethane rigid foam wood-like material, it is characterized in that, earlier with rigid-foam polyether or polyester, blowing agent, stabilizing agent, catalyst, the inhibitor mixed of being fuming become the combination material, add fire retardant then, mixed about 10 to 15 seconds then casting fast in being preheating to 40 ℃ to 50 ℃ mould, the opening mold after about 15 minutes of placement afterwards of cast again with many phenylmethanes polyisocyanates (PAPI) high-speed stirred under about 25 ℃ to 40 ℃ temperature.
2, the method for claim 1 is characterized in that, rigid-foam polyether or polyester adopt glass fibre to strengthen, blowing agent adopts Freon-11, and stabilizing agent adopts silicon foams, and catalyst adopts stannous octoate and triethylene diamine, fire retardant adopts DMMP, and the inhibitor of being fuming adopts fumaric acid.
3, method as claimed in claim 2 is characterized in that, the raw-material weight portion proportioning number that adopts is followed successively by: glass fibre strengthens, and 100; Many phenylmethanes polyisocyanates (PAPI), 150; Freon-11,10; Silicon foams, 1; Stannous octoate, 0.3; Triethylene diamine, 0.5; DMMP, 6; Fumaric acid, 28.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96118041 CN1156658A (en) | 1996-02-09 | 1996-02-09 | Process for producing wood-imitation material of hard polyurethane foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96118041 CN1156658A (en) | 1996-02-09 | 1996-02-09 | Process for producing wood-imitation material of hard polyurethane foam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1156658A true CN1156658A (en) | 1997-08-13 |
Family
ID=5124741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96118041 Pending CN1156658A (en) | 1996-02-09 | 1996-02-09 | Process for producing wood-imitation material of hard polyurethane foam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1156658A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101177474B (en) * | 2007-10-31 | 2010-06-16 | 无锡双象化学工业有限公司 | Polyurethane rigid foam resin for buildings |
| CN104875272A (en) * | 2015-06-08 | 2015-09-02 | 努尔买买提·吐松 | Processing method of imitated wood carving using waste material |
| CN107189030A (en) * | 2017-06-10 | 2017-09-22 | 刘锦白 | A kind of manufacture method of multifunctional rigid foam polyurethane anaglyphy ceiling and cinerary casket |
| CN115197451A (en) * | 2022-07-08 | 2022-10-18 | 重庆欧典实业有限公司 | Fiber-reinforced polyurethane composite material and preparation method and application thereof |
-
1996
- 1996-02-09 CN CN 96118041 patent/CN1156658A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101177474B (en) * | 2007-10-31 | 2010-06-16 | 无锡双象化学工业有限公司 | Polyurethane rigid foam resin for buildings |
| CN104875272A (en) * | 2015-06-08 | 2015-09-02 | 努尔买买提·吐松 | Processing method of imitated wood carving using waste material |
| CN107189030A (en) * | 2017-06-10 | 2017-09-22 | 刘锦白 | A kind of manufacture method of multifunctional rigid foam polyurethane anaglyphy ceiling and cinerary casket |
| CN115197451A (en) * | 2022-07-08 | 2022-10-18 | 重庆欧典实业有限公司 | Fiber-reinforced polyurethane composite material and preparation method and application thereof |
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