CN101475743A - Enhanced wood-like material and preparation method thereof - Google Patents
Enhanced wood-like material and preparation method thereof Download PDFInfo
- Publication number
- CN101475743A CN101475743A CNA2009100288681A CN200910028868A CN101475743A CN 101475743 A CN101475743 A CN 101475743A CN A2009100288681 A CNA2009100288681 A CN A2009100288681A CN 200910028868 A CN200910028868 A CN 200910028868A CN 101475743 A CN101475743 A CN 101475743A
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- glass fibre
- glass fiber
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- polyurethane foam
- hard polyurethane
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- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003365 glass fiber Substances 0.000 claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 13
- 239000011496 polyurethane foam Substances 0.000 claims description 13
- 239000003513 alkali Substances 0.000 claims description 10
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001746 injection moulding Methods 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 150000002148 esters Chemical class 0.000 claims description 5
- 150000002334 glycols Chemical class 0.000 claims description 5
- 229920000570 polyether Polymers 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 238000007666 vacuum forming Methods 0.000 abstract description 2
- 229920002635 polyurethane Polymers 0.000 abstract 5
- 239000004814 polyurethane Substances 0.000 abstract 5
- 238000005452 bending Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 239000002023 wood Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 229920002522 Wood fibre Polymers 0.000 description 2
- 230000002929 anti-fatigue Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The invention discloses a reinforced wood-like material which is a mixture of hard foamed polyurethane and glass fiber. The glass fiber is alkali-free glass fiber expanded yarn, and the continuous glass fiber expanded yarn is uniformly distributed in the hard foamed polyurethane and has a remarkable reinforcing effect. When in preparation, firstly polyurethane is prepared, then glass fiber expansion yarns are preset in a die cavity, finally the molten polyurethane is filled among the glass fiber expansion yarns through a vacuum forming method, and the polyurethane is taken out of the die after being solidified to obtain a finished product. The product of the invention has tensile strength of more than 300MPa, bending modulus of more than 1500MPa, and excellent fatigue resistance and shock resistance. In addition, the micro bubbles densely distributed in the material have good sound attenuation and vibration reduction capabilities. The invention is particularly suitable for use as a material for engineering structural members.
Description
Technical field
The present invention relates to a kind of imitated wood material, enhanced wood-like material of particularly a kind of embedded glass silvalin and preparation method thereof
Background technology
Along with expanding economy, the occasion of using timber is more and more because natural timber is become a useful person the phase long, operational timber resources is limited, natural timber can not satisfy social needs.Application organic synthesis in present age material is made imitative wood technology and is reached its maturity, and imitated wood material is used widely.Existing disclosed imitative wood technology scheme has multiple, and its mainstream technology is a base-material with light specific gravity, moisture-proof, plastic materials anti-corrosion, easy processing, is aided with inexpensive fiber and mixes to improve the intensity of goods.Disclosed a kind of imitated wood material of Chinese patent ZL01128010.7 and preparation method thereof for example, its adopts 30～50% plastics to mix hot extrusion molding afterwards with 50～70% lignocellulosic particle.Lignocellulosic particle described in this technology is soddy soil or wooden class sawdust, rice husk etc., and its staple length is short, helps wood fibre and plastics thorough mixing and increases product strength.But the wood fibre described in this technical scheme lacks continuity in plastics, and institute's enhancing degree is limited, and such imitated wood material only can be made finishing material and use, can not be as the material of bearing carrier.
Summary of the invention
The present invention is primarily aimed at that existing imitated wood material intensity is low, the deficiency of poor toughness, propose a kind of component rationally, raw material is easy to get the imitated wood material of strong height and good toughness.
Another object of the present invention provides the preparation method of enhanced wood-like material.
The present invention is achieved through the following technical solutions technical object.
A kind of enhanced wood-like material, it is the mixture of hard polyurethane foam and glass fibre, and its improvements are: described hard polyurethane foam accounts for weight ratio 40～70%, and it is 30～60% that glass fibre accounts for weight ratio.Described hard polyurethane foam contains following component by the massfraction metering.100 parts of polyether glycols, 105～120 parts of isocyanic ester, 0.5～1.5 part of catalyzer, 25～40 parts of whipping agents, 1.5～2 parts of suds-stabilizing agents.Described glass fibre is continuous shape and is distributed in the hard polyurethane foam.
The preparation enhanced wood-like material is operated in the following order:
A, inject raw material by preset blending ratio to injection moulding machine and make urethane;
B, preset the glass fibre expanded yarns that is continuous shape in the die cavity in sealing;
C, the sprue gate that will be in the mould bottom are connected with the injection moulding machine outlet, and the Link Port that vacuumizes that will be in mould top again is connected with vacuum pump;
D, start vacuum pump and make and form negative pressure in the die cavity, suck fused urethane from the sprue gate and be filled among the glass fibre expanded yarns;
E, treat to solidify in 12～15 minutes the back depanning product.
The present invention compared with prior art has following positively effect:
1, the glass fiber yarn that is continuous shape is distributed in the polyurathamc base material, has significant reinforced effects, and product tensile strength reaches more than the 300Mpa, and modulus in flexure reaches more than the 1500Mpa;
2, adopt vacuum forming technology, the fused polyurathamc is filled equably between the glass fibre expanded yarns, material is even, and performance is good;
3, glass fibre expanded yarns and polyurathamc bonding interface are big, and bonding force is strong, and the crackle of the stressed generation of material excess load is difficult for expansion, so have excellent anti-fatigue performance and impact property.
4, urethane forms a large amount of microbubbles after foaming, and material has good vibration-absorbing denoising ability.
Description of drawings
Accompanying drawing is the transverse sectional view that the present invention makes square material.
Embodiment
The present invention shown in the accompanying drawing makes the view in transverse section of square material, uniform alkali free glass fibre expanded yarns the visible hard polyurethane foam from the cross section.Hard polyurethane foam accounts for weight ratio 40～70% among the present invention, and it is 30～60% that the alkali free glass fibre expanded yarns accounts for weight ratio.Described hard polyurethane foam contains following component by the massfraction metering: 100 parts of polyether glycols, 105～120 parts of isocyanic ester, 0.5～1.5 part of catalyzer, 25～40 parts of whipping agents, 1.5～2 parts of suds-stabilizing agents.Described alkali free glass fibre expanded yarns filament diameter is 6～21 microns.
Embodiment 1
Present embodiment is by weight the hard polyurethane foam of getting 40% respectively, and 60% filament diameter is that 6 microns alkali free glass fibre expanded yarns is made enhanced wood-like material.During preparation, technology adds 40 parts of 0.5 part of 105 parts of 100 parts of polyether glycols, isocyanic ester, catalyzer, whipping agents, 32 parts of the suds-stabilizing agents with the massfraction metering respectively in injection moulding machine at first routinely.Then in the sealing die cavity, preset the alkali free glass fibre expanded yarns that is continuous shape, the sprue gate that will be in the mould bottom then is connected with the injection moulding machine outlet, the Link Port that vacuumizes that will be in mould top again is connected with vacuum pump, start vacuum pump and make formation negative pressure in the die cavity, suck the urethane dissolve from the sprue gate and be filled into the alkali free glass fibre expanded yarns, treat to solidify in 15 minutes the back depanning product.
The present invention makes strongthener with the alkali free glass fibre expanded yarns, and product tensile strength is reached more than the 300Mpa, and modulus in flexure reaches more than the 1500Mpa.Uniform non-alkali glass expanded yarns and urethane have the exhibiting high surface interface to exist, the inhibition even the crackle that the stressed back of material excess load produces also is easy to get, and crackle is difficult for expansion, and therefore, the present invention possesses excellent anti-fatigue performance and shock resistance.Owing to handle through foaming, the micro bubbles of gathering in the material has good noise reduction and damping capacity.
Embodiment 2
The present embodiment preparation method is identical with embodiment 1, and only proportioning is different.Difference is by weight the hard polyurethane foam of getting 70% respectively, gets 30% filament diameter again and is 21 microns alkali free glass fibre expanded yarns and make enhanced wood-like material.When preparation urethane, its component is still pressed the massfraction metering, and consumption is adjusted into: 100 parts of polyether glycols, 120 parts of isocyanic ester, 1.5 parts of catalyzer, 25 parts of whipping agents, 1.5 parts of suds-stabilizing agents.The enhanced wood-like material mechanical property ratio embodiment 1 of present embodiment preparation is a bit weaker, but still higher more than 30% than prior art products.
Claims (3)
1, a kind of enhanced wood-like material, it is the mixture of hard polyurethane foam and glass fibre, it is characterized in that: described hard polyurethane foam accounts for weight ratio 40～70%, and it is 30～60% that glass fibre accounts for weight ratio; Described hard polyurethane foam contains following component by the massfraction metering; 100 parts of polyether glycols, 105～120 parts of isocyanic ester, 0.5～1.5 part of catalyzer, 25～40 parts of whipping agents, 1.5～2 parts of suds-stabilizing agents; Described glass fibre is continuous shape and is distributed in the hard polyurethane foam.
2, enhanced wood-like material according to claim 1 is characterized in that: described glass fibre is the alkali free glass fibre expanded yarns, and filament diameter is 6～21 microns.
3, the preparation method of enhanced wood-like material according to claim 1 is characterized in that: it is a kind of vacuum moulding, it is characterized in that operating in the following order:
A, inject raw material by preset blending ratio to injection moulding machine and make urethane;
B, preset the glass fibre expanded yarns that is continuous shape in the die cavity in sealing;
C, the sprue gate that will be in the mould bottom are connected with the injection moulding machine outlet, and the Link Port that vacuumizes that will be in mould top again is connected with vacuum pump;
D, start vacuum pump and make and form negative pressure in the die cavity, suck fused urethane from the sprue gate and be filled among the glass fibre expanded yarns;
E, treat to solidify in 12～15 minutes the back depanning product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100288681A CN101475743A (en) | 2009-01-13 | 2009-01-13 | Enhanced wood-like material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100288681A CN101475743A (en) | 2009-01-13 | 2009-01-13 | Enhanced wood-like material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101475743A true CN101475743A (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100288681A Pending CN101475743A (en) | 2009-01-13 | 2009-01-13 | Enhanced wood-like material and preparation method thereof |
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| CN (1) | CN101475743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106349446A (en) * | 2016-08-17 | 2017-01-25 | 中国铁道科学研究院铁道建筑研究所 | High-fiber-content fiber-reinforced rigid polyurethane foam composite board and manufacturing method thereof |
-
2009
- 2009-01-13 CN CNA2009100288681A patent/CN101475743A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106349446A (en) * | 2016-08-17 | 2017-01-25 | 中国铁道科学研究院铁道建筑研究所 | High-fiber-content fiber-reinforced rigid polyurethane foam composite board and manufacturing method thereof |
| CN106349446B (en) * | 2016-08-17 | 2018-12-25 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of high microsteping fibres in amounts enhancing hard polyurethane foam synthetic plate and preparation method thereof |
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Open date: 20090708 |