CN1191875A - High elastic polyurethane material prepared using bark as raw material and its preparation - Google Patents
High elastic polyurethane material prepared using bark as raw material and its preparation Download PDFInfo
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- CN1191875A CN1191875A CN98110709A CN98110709A CN1191875A CN 1191875 A CN1191875 A CN 1191875A CN 98110709 A CN98110709 A CN 98110709A CN 98110709 A CN98110709 A CN 98110709A CN 1191875 A CN1191875 A CN 1191875A
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- bark
- polyurethane material
- high elastic
- raw material
- elastic polyurethane
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Abstract
The present invention belongs to the field of polymer material technology and the polyurethane material is prepared with Acacia bark as material and through simple no-pollution process. Waste product of the said material is biological degradable and thus is innocuous to environment. With high compression strength and elastic resilience, the said material may be used for cushion in car and motor cycle. Furthermore, it has one 20% lower production cost compared with conventional polyurethane material.
Description
The invention belongs to technical field of polymer materials, be a kind of be the biodegradation type high elastic polyurethane material and the preparation thereof of raw material with the bark
Automobile-used now cushion polyurethane foam is divided into two kinds usually: polyether-type and polyester type.Polyether-type employing propylene oxide or oxyethane are that the polyether chain of main chain is main raw material and isocyanate reaction, form based on polyether chain, by the crosslinked low crosslinking degree elastic foamed body of ammonia ester bond.But owing to exist too much ehter bond in the long-chain, make the foamy quality soft partially, compressive strength and rebound performance are not good.In order to improve these shortcomings, people have descended many time on the initiator of polyethers, for example use tolylene diamine, dihydroxyphenyl propanes etc. contain phenyl ring or have the π system of more conjugated link(age) to improve foam compression intensity as initiator, but because the percentage composition less than 10% of initiator in foam materials, so the compression performance of urethane is improved effect to little, people are seeking new expansion always and are connecting agent in recent years.The polyester chain that the polyurethane material of polyester type directly utilizes polyvalent alcohol and polyprotonic acid to form is long-chain, thereby introduce more two keys, the compressive strength of material monolithic is improved greatly, but the rebound resilience of material descends because lacking ehter bond again, in addition, the density of polyester type material is bigger, so the production cost height, valuable product only is suitable for the use of special dimension.And, after this polyurethane foam is discarded, can not biological degradation, recycling is burned and can be produced cyanide gas, causes atmospheric pollution; Bury and be difficult to and decompose, make the soil property deterioration.Therefore, its waste causes severe contamination to environment.
At the problems referred to above, people just are being devoted to the Development of New Generation polyurethane foamed material, and wish to reach following requirement:
1. the property widened that has performance range: higher compressive strength, compression ratio and good rebound degree are to satisfy the requirement of different purposes.
2. have the market competitiveness: economy on the material choice and as far as possible little density are to reduce production costs.
3. meet the Sustainable development requirement: behind production technique and production process and the product abandonment to environment
Do not work the mischief, biodegradable, promptly belong to green material.
The object of the present invention is to provide a kind of compressive strength height, production cost is low and biodegradable, avoids the high elastic polyurethane material and the preparation technology thereof of environmental pollution.
Common urethane is generally synthetic by polyvalent alcohol and vulcabond.Find that after deliberation abundant tannin is contained in China extensively black wattle plant bark of plantation, content is 50%, and (claiming tannin urethane) has degradation property preferably and be raw material synthetic urethane with the tannin.The present invention is raw material and vulcabond synthesis of polyurethane with the black wattle plant bark directly, and we are called the bark polyurethane material.Detect by analysis, this polyurethane material can obtain higher compressive strength, and cost is cheap again.Owing to contain Mierocrystalline cellulose and wood cellulose in the bark, demonstrate better microbiological degradation than pure tannin polyurethane material.Learn that by Infrared spectroscopy in the bark polyurethane elastomeric materials, the bark composition is better than other compositions by microbiological degradation.In other words, the bark composition has not only improved the intensity of urethane as cross-linking set in urethane, and as the decomposition object of microorganism, makes urethane be easier to degraded.
The preparation technology of the bark polyurethane material that the present invention proposes is as follows:
The black wattle plant skin is smashed to pieces, the bark mixture that in a unit weight (for example 1000 grams) polyester or technical pure polyethers propylene oxide, adds the 10-30% weight percent, after in reactor, stirring and dissolving, under 10-25 ｀ C condition, make it expanded, adding polyester or polyethers amount then successively is the amine of 0.02-0.06%, the organo-metallic tin class catalyzer of 0.1-0.4%, the technical pure silicone oil of 0.1-0.4% and 0.4-0.8% are as the water of whipping agent, stir, the technical pure vulcabond (TDI) that adds polyester or polyethers amount then and be 40-50% reacts, pour into through in the mould of preheating when having bubble to produce, put into baking oven, under 50-80 ｀ C condition, solidified 10-15 minute, promptly get required bark high elastic polyurethane material.
Make automobile-used cushion with above-mentioned bark polyurethane material, through comparative determination, rebound degree and compressive strength all obtain promising result.Test is undertaken by the GB standard, choose the material of three kinds of different proportionings of the present invention and the automobile cushion of Nanjing of China IVEC0 motor corporation, the motorcycle cushion of the easily first motorcycle firm of the automobile cushion of Germany BENZ motor corporation and China compares, and its performance index are listed as follows:
Several automobile-used cushion main performance index relatively
As can be seen from the above table the bark polyurethane material that proposes of the present invention performance index good, be more satisfactory automobile-used cushion material.Compare with other polyurethane material on its production cost, owing to used bark, the collection transportation cost of bark takes lower, reduces 15-20% than the cost with polyvalent alcohol synthesis of polyurethane material.The more important thing is that this material has good microbiological degradation, avoided the pollution of waste, help pushing to industrialization environment.
Embodiment 1: synthesis condition: the polyethers propylene oxide adopts N330:50g, TDI:20g, and diethanolamine:
0.25g, tin catalyst: 0.16g, water: 0.2m1 (containing 7.5% amine catalyst),
Silicone oil: 1g, BK:15g, performance index: rebound degree: 52%
Density: 51kg/m3
Compressive strength: 6.4Kpa (25%), 8.6Kpa (45%), 31.4Kpa (65%) embodiment 2: synthesis condition: the polyethers propylene oxide adopts N330:50g, TDI:20g, diethanolamine:
0.25g, tin catalyst: 0.16g, water: 0.2m1 (contains 7.5% amine catalysis
Agent), silicone oil: 1g, BK:10g, CU:15g performance index: rebound degree: 45%
Density: 51Kg/m3
Compressive strength: 4.4Kpa (25%), 7.0Kpa (45%), 27.8Kpa (65%) embodiment 3: synthesis condition: the polyethers propylene oxide adopts N330:50g, TDI:20g, diethanolamine: 0.25g,
Tin catalyst: 0.16g, water: 0.2m1 (containing 7.5% amine catalyst),
Silicone oil: 1g, BK:5g, CU:20g performance index: rebound degree: 44%
Density: 50Kg/m3
Compressive strength: 2.8Kpa (25%), 4.6Kpa (45%), 18.2Kpa (65%)
Claims (2)
1. a high elastic polyurethane material is characterized in that with the black wattle plant skin being that raw material and vulcabond are polymerized.
2. the preparation technology of a high elastic polyurethane material, with the black wattle plant skin is that raw material is smashed it to pieces, it is characterized in that in the technical pure polyethers propylene oxide of a weight unit, adding the bark mixture of 10-30% weight percent, stirring and dissolving in reactor, under 10-25 ｀ C condition, make it expanded, adding polyester or polyethers amount then successively is the amine of 0.02-0.06%, the organo-metallic tin class catalyzer of 0.1-0.4%, the technical pure silicone oil of 0.1-0.4% and 0.4-0.8% are as the water of whipping agent, stir, the technical pure vulcabond (TDI) that adds the polyester amount then and be 40-50% reacts, pour into through in the mould of preheating when having bubble to produce, put into baking oven, under 50-80 ｀ C condition, solidified 10-15 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98110709A CN1081198C (en) | 1998-03-10 | 1998-03-10 | High elastic polyurethane material prepared using bark as raw material and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98110709A CN1081198C (en) | 1998-03-10 | 1998-03-10 | High elastic polyurethane material prepared using bark as raw material and its preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1191875A true CN1191875A (en) | 1998-09-02 |
| CN1081198C CN1081198C (en) | 2002-03-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98110709A Expired - Fee Related CN1081198C (en) | 1998-03-10 | 1998-03-10 | High elastic polyurethane material prepared using bark as raw material and its preparation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1081198C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102675581A (en) * | 2012-03-12 | 2012-09-19 | 北华大学 | Method for preparing biodegradable polyurethane foam by liquefied modification of bark powder and lignin |
| CN108201737A (en) * | 2017-12-30 | 2018-06-26 | 安徽新立滤清器有限公司 | A kind of filter filtering material for removing micronic dust in air |
| CN110790894A (en) * | 2019-11-27 | 2020-02-14 | 湖北世丰汽车内饰有限公司 | Semi-ether semi-ester sponge for vehicles and preparation method thereof |
| CN112795139A (en) * | 2020-12-31 | 2021-05-14 | 通源塑料包装(苏州)有限公司 | Preparation method of degradable biological plastic bag |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4032483A (en) * | 1976-04-20 | 1977-06-28 | Champion International Corporation | Manufacture of polyurethanes from bark |
| CN1032694C (en) * | 1993-01-08 | 1996-09-04 | 郑州工学院 | Process for synthesis of reactive wood powder polyurethane foamed material |
-
1998
- 1998-03-10 CN CN98110709A patent/CN1081198C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102675581A (en) * | 2012-03-12 | 2012-09-19 | 北华大学 | Method for preparing biodegradable polyurethane foam by liquefied modification of bark powder and lignin |
| CN102675581B (en) * | 2012-03-12 | 2016-08-10 | 北华大学 | The method that biodegradable polyurethane foam is prepared in bark powder, liquefying lignin modification |
| CN108201737A (en) * | 2017-12-30 | 2018-06-26 | 安徽新立滤清器有限公司 | A kind of filter filtering material for removing micronic dust in air |
| CN110790894A (en) * | 2019-11-27 | 2020-02-14 | 湖北世丰汽车内饰有限公司 | Semi-ether semi-ester sponge for vehicles and preparation method thereof |
| CN112795139A (en) * | 2020-12-31 | 2021-05-14 | 通源塑料包装(苏州)有限公司 | Preparation method of degradable biological plastic bag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1081198C (en) | 2002-03-20 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |