CN101733893A - Method for producing composite foam sheet from foam scrap with cross-linked polrvinyl chloride structure - Google Patents
Method for producing composite foam sheet from foam scrap with cross-linked polrvinyl chloride structure Download PDFInfo
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- CN101733893A CN101733893A CN200910232399A CN200910232399A CN101733893A CN 101733893 A CN101733893 A CN 101733893A CN 200910232399 A CN200910232399 A CN 200910232399A CN 200910232399 A CN200910232399 A CN 200910232399A CN 101733893 A CN101733893 A CN 101733893A
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Abstract
The invention discloses a method for producing a composite foam sheet from foam scrap with cross-linked polrvinyl chloride structure. The method comprises the following steps: (1) crushing the foam scrap with cross-linked polrvinyl chloride structure into particles; (2) mixing the polrvinyl chloride foam composite uniformly to prepare a foamable polyurethane adhesive; (3) mixing the foam particles prepared in step 1 and the foamable polyurethane adhesive prepared in step 2 and stirring uniformly to obtain foaming material of foaming particles; (4) moving the foaming material of foam particles obtained in step 3 to a mould for foaming moulding; (5) obtaining the composite foam sheet after demoulding. The invention has the advantages of simple formula and process, maximize and optimize utilization of resources, and high economic value as well as non environmental protection concern. The obtained composite foam has good comprehensive mechanical properties, can be used for building the core layers of the walls, roofs, doors and windows of permanent or temporary houses, and also can be used in the fields of industry, transport, construction, national defense and aerospace, and the like.
Description
Technical field
The present invention relates to the method that crosslinked polyvinyl chloride structural foam (cross-linked PVC structural foam) waste recovery is utilized, particularly the crosslinked polyvinyl chloride structural foam materials recycling is recycled the method for making composite foam sheet.
Background technology
Crosslinked polyvinyl chloride structural foam is to be primary raw material with polyvinyl chloride and isocyanates, under effects such as catalyst, blowing agent, and the cross-linked structure foamed material that forms through mixing, polymerization, foaming with hole-closing structure.The raw material and the method that prepare this crosslinked polyvinyl chloride structural foam can be implemented with reference to patent WO 2005/092958 and patent WO 2007/141647.At present, the crosslinked polyvinyl chloride structural foam on the market mainly comprises: the strucell that Changzhou Tiansheng New Material Co., Ltd produces
TMThe P foamed material, Divinycell H, the HCP of DIAB (wearing platinum) company, HT and HP series foamed material, the Q series foamed material of the C70 of AIREX company and C71 series foamed material and Japanese JFC company etc.Crosslinked polyvinyl chloride structural foam has good static state and dynamic compression intensity, impact strength, rigidity, dimensional stability and higher resistance to fracture.
At present, in producing crosslinked polyvinyl chloride structural foam product process, can produce a large amount of discarded objects (waste material and leftover pieces), simultaneously, in the back process of crosslinked polyvinyl chloride structural foam product, also can produce the foam chip of some.Therefore, the crosslinked polyvinyl chloride structural foam waste material if can be carried out effective cycling and reutilization, can not only protect environment effectively, reduce and pollute, and can save resource, turn waste into wealth.
For the processing of crosslinked rigid foam waste materials such as polyurethane, all be to adopt following method at present usually:
1. heat energy is reclaimed in burning: the main carbon containing of rigid foam, hydrogen, oxygen, nitrogen, when burning with oxygen in the air, produce a large amount of heat energy, waste and old material is often made fuel with the municipal solid waste material, can replace the part coal, make the fuel of boiler, but in burning process incomplete combustion very likely, can produce toxic gas, as the CHCl of HCl and trace
3Deng, thereby cause photochemical fog, acid rain and damage the ozone layer, atmosphere is polluted, so the opposition cry of people's the method is constantly surging.
2. bury: the shortcoming land occupation resource of this method maximum, and, can cause very serious environmental pollution because it is difficult to degraded.
3. directly recycle: from the economic angle of antenatal input, directly recycle, but, the defective of this method maximum is that the foamed product performance after the regeneration descends obviously, only be applicable to low-grade parts such as doing furniture and vehicle liner, application surface is narrow, and technology is loaded down with trivial details, the amount of labour big, economic worth is not high yet.
4. chemical recovery: adopt chemical methodes such as alcoholysis, alkaline hydrolysis and hydrolysis to reclaim, this mode not only can reduce discarded object, and can realize the recycling of raw material, and from the serviceability of final products, chemical recovery method is good.But, the cost height that this method is required, equipment is required high, and the separation of catabolite and purification, organic efficiency and utilize the inhibition or the like of the toxic and side effect of performance, generation all to have problems again, the realization of industrialization difficulty is bigger.
In the above-mentioned method for treatment of waste material, the method that burning is reclaimed heat energy and buried owing to easily atmosphere and environment are caused serious pollution, therefore is not suitable for using; The step complexity of chemical recovery method has high input, and the realization of industrialization difficulty is bigger, the input-output ratio great disparity.Therefore, because complicated component for the processing of rigid foam waste materials such as crosslinked polyvinyl chloride structural foam, does not also have good solution at present.
Summary of the invention
What the present invention will solve is exactly not have good method to handle the technical problem of structural foamed plastic waste materials such as crosslinked polyvinyl chloride structural foam at present, proposes a kind of method that adopts the crosslinked polyvinyl chloride structural foam waste material to produce composite foam sheet.
The method that employing crosslinked polyvinyl chloride structural foam waste material of the present invention is produced composite foam sheet comprises the steps:
1) the crosslinked polyvinyl chloride structural foam waste material is ground into foam beads;
2) with the isocyanates of 120-150 weight portion, by the polyol compound of 100 weight portions, the surfactant of 0.2-3 weight portion, the catalyst of 0.1-2 weight portion, the polyurethane foam combination material that the blowing agent of 1-5 weight portion is formed evenly mixes, but makes expansion type polyurethane binder;
3) foam beads that 100 weight portion step 1) are made and 25-233 weight portion step 2) expansion type polyurethane binder of obtaining mixes and stirs, and obtains the foam beads foamed material;
4) the foam beads foamed material that step 3) is made is moved into foaming in the mould;
5) make composite foam sheet after the demoulding.
In the step 1), should be according to according to production requirement (as color, density etc.), after the crosslinked polyvinyl chloride structural foam waste material of selection respective color and density is cut into sheet, by pulverizer crosslinked RPVC bubble waste material is ground into irregular foam beads of uniform size, the size of the foam beads after the pulverizing is: 0.5-10cm, preferred 1-5cm.Aforementioned pulverizing is meant the physical aspect that only changes the crosslinked polyvinyl chloride structural foam waste material, does not destroy its molecular chain structure.
Step 2) in, the weight of described crosslinked polyvinyl chloride structural foam fertilizer accounts for the 30%-80% of composite foam sheet gross weight, preferred 40%-65%.
Step 2) in, described isocyanate component is not special to be limited, it can be methyl diphenylene diisocyanate, the mixture of methyl diphenylene diisocyanate and its oligomer (this oligomer is commonly referred to the methyl diphenylene diisocyanate of " thick " or polymerization, that is: poly methylene poly phenyl poly isocyanate), 2, the 4-toluene di-isocyanate(TDI), 2,6-toluene di-isocyanate(TDI), aromatic isocyanates such as phenylene vulcabond; Tetramethylene diisocyanate, aliphatic isocyanates such as hexamethylene diisocyanate; IPDI, HTDI, aliphatic isocyanates such as hydrogenated diphenyl methane diisocyanate etc., these compounds can use separately, also its more than one arbitrary proportions can be mixed and use.
Wherein, usually preferred isocyanates is an aromatic isocyanate, because their reactivity is bigger.Preferred isocyanates is a poly methylene poly phenyl poly isocyanate.
The mass content of the NCO of isocyanate component is preferably 26.0-33.6%, more preferably 30.5-32.5%.
As the average functionality of isocyanate component, preferred 2.0-3.0 more selects 2.5-2.8.
Step 2) in, there is no particular limitation for described polyol compound, can use well-known hard polyurethane foam polyol compound.For example, aliphatic polyol compound, aromatic polyol compound and contain the polyol compound etc. of tertiary amine groups, these polyol compounds can use separately, also its more than one arbitrary proportions can be mixed and use.The preferred hydroxyl value of above-mentioned polyol compound is 200-600mgKOH/g, and viscosity is 100-3500mPas.
The aliphatic polyol compound is the polyfunctional group oligomer, it is to be initator with the polyol compound, the reaction of aliphatic or alicyclic polyfunctional group active hydride and alkylene oxide is obtained, and alkylene oxide comprises one or more of cyclic ethers such as expoxy propane, oxirane, epoxy styrene, oxolane.The polyol compound initator that the aliphatic polyol compound is used, be meant ethylene glycol, propane diols, 1, the 4-butanediol, 1, the 3-butanediol, 1, the 5-pentanediol, 1, the 6-hexylene glycol, 1,10-decanediol, 1, the 2-cyclohexanediol, the 2-butene-1,4-glycol, 3-cyclohexene-1, the 1-dimethanol, 5-(2-hydroxyl propoxyl group)-1-amylalcohol, 2-allyloxy methyl-2-methyl isophthalic acid, glycols such as ammediol, trimethylolpropane, trihydroxylic alcohols such as glycerine, four sense alcohols such as pentaerythrite, D-sorbite, sucrose, lactose, α-Jia Jiputanggan, polyalcohols such as Alpha-hydroxy alkyl glucoside, water etc.
The aromatic polyol compound by alkylene oxide being added to the polyol compound that obtains on the multifunctional active dydrogen compounds that has aromatic rings in the molecule, for example, adds to the compound that hydroquinones, bisphenol-A etc. upward obtain with the alkylene oxide open loop; The polyol compound of the ester of aromatic series polycarboxylic acids and polyalcohol, for example, the ester polyol compound that reaction such as the carboxyl terminal of terephthalic acid (TPA), phthalic acid, M-phthalic acid etc. and ethylene glycol, diethylene glycol etc. forms etc.Above-mentioned alkylene oxide comprises one or more of cyclic ethers such as expoxy propane, oxirane, epoxy styrene.
The polyol compound that contains tertiary amine groups is multi-functional polyol's compound, it is to be initator with primary amine or secondary amine, and one or more material generation ring opening polyadditions reactions of alkylene oxides such as expoxy propane, oxirane, epoxy styrene, oxolane are obtained.The initator that contains the polyol compound of tertiary amine groups, comprise, aliphatic such as ammonia, methylamine, ethamine uncle or Zhong Yiyuan amine, ethylenediamine, hexamethylene diamine, N, N '-aliphatic such as dimethyl-ethylenediamine uncle or Zhong Duoyuan amine, aromatic series such as aniline, diphenylamines, toluenediamine, dimethylphenylene diamine, methylphenylamine uncle or Zhong Yiyuan or polynary amine, MEA, diethanol amine, diisopropanol amine etc.
Step 2) in, described catalyst can be N, tertiary amines such as N-dimethyl cyclohexyl amine, tetramethylethylenediamine, dimethylethanolamine, triethanolamine, triethylene diamine, but the metal species catalyst of catalytic reactions such as stannous oleate, stannous octoate, dibutyl tin laurate.
Step 2) in, described surfactant can be graft copolymer or the block copolymer and the dimethyl siloxane of polydimethylsiloxane--polyoxyalkylene-hydrocarbon.
Step 2) in, described blowing agent is meant water, does not exist (hydrogenation) fluorochlorohydrocarbon etc. that ozone layer is had the blowing agent of destruction, and therefore, there is not the pollution to environment in this raw material.
As required, also can add various additives commonly used in this area in the composite foam of the present invention, for example fire retardant, pigment or dyestuff, pigment dispersing agent, ultra-violet absorber, nucleator etc.
Step 2) in, should control polyurethane foam combination material and be not less than 30s, so that expansion type polyurethane binder can not mix with crosslinked polyvinyl chloride structural foam before the foaming with the cream time that isocyanate component reacts.
In the step 3), after the crosslinked polyvinyl chloride structural foam particle that step 1) is made is sent in the machine mixer, stir on one side, on one side by Sprayable or perfusion form adding step 2) expansion type polyurethane binder of making, compound is stirred obtain the foam beads foamed material.Aforementioned mixing time is 30s-600s, and preferred mixing time is 60s-180s.
In the step 4), can adopt existing modes such as oil bath, water-bath, steam or electrical heating that mould is heated, the control mold temperature is 30-80 ℃, and preferred 35-60 ℃, the reaction time is cooling forming after 1-3 hour.
Find through a large amount of tests through the applicant, crosslinked polyvinyl chloride structural foam and step 2) compatibility of expansion type polyurethane binder of making is very good, thereby through step 4), expansion type polyurethane binder has been clamp-oned in the slit of crosslinked polyvinyl chloride structural foam particle, the crosslinked polyvinyl chloride structural foam particle is sticked together tightly, after the curing, be close between a kind of each crosslinked polyvinyl chloride structural foam and be full of polyurethane foam between the particle in the slit with regard to having formed, and the goodish a kind of NEW TYPE OF COMPOSITE foamed material of affinity.
The present invention has following advantage:
1, the crosslinked polyvinyl chloride structural foam waste material of the present invention's use comprises the discarded object (waste material and leftover pieces) that produces in the production, and the foam chip in the processing of back etc., thereby opened up new approach for crosslinked rigid foam reclamation of waste materials.
2, prescription of the present invention and technology are simple, can realize utilization of resources maximization, optimization, the economic worth height, and do not have the problem of environmental protection aspect.
3, the present invention joins crosslinked polyvinyl chloride structural foam among the monomer of expansion type polyurethane binder, utilize and have compatibility preferably between organic matter, improve interface interaction power, both had crosslinked polyvinyl chloride structural foam favorable mechanical mechanical property (comprising compression performance, tensile property and cutting performance etc.), heat resistance and fire resistance etc., have polyurethane foam quality softness again concurrently, the characteristics of good toughness.
4, because the present invention has adopted disintegrating process, kept the distinctive mechanical property of crosslinked polyvinyl chloride structural foam as much as possible, so the foam board good moldability that adopts the present invention to regenerate, vertical and horizontal cutting back foam surface is good.
5, adopt the composite foam sheet of the present invention's preparation, but one-shot forming, after also can making slab, jagsaw, be cut into the sheet material of all size, the composite foam that the present invention makes can be used for the laminboard layer of construction wall, permanent or one off houses top, door, window, can be directly used in the laminboard layer of construction wall, permanent or one off houses top, door, window, also can with compound manufacturing compound sandwich sheet material such as aluminium sheet, can be widely used in fields such as industry, transportation, building, national defence and space flight.
Description of drawings
Fig. 1 is the composite foam material profile of crosslinked polyvinyl chloride structural foam of the present invention, the preparation of expansion type polyurethane binder.1. be crosslinked polyvinyl chloride structural foam; 2. be expansion type polyurethane binder.
The specific embodiment
Below by embodiment the present invention is specifically described, it is important to point out that following examples can only be used for that the present invention is further described, can not be interpreted as limiting the scope of the invention.
Embodiment 1
Select the crosslinked polyvinyl chloride structural foam leftover pieces and the defective products of same specification, prepare the regeneration composite foam sheet according to following steps:
1,45kg crosslinked polyvinyl chloride structural foam leftover pieces and defective products are cut into pieces after, put in the pulverizer, be ground into the foam beads that is of a size of 2-3cm;
2, take by weighing the polyurethane foam combination material that 20.5kg mixes according to following ratio: (viscosity that comprises 40 weight portions is 150mPas PPOX polyalcohol to the combination polyol compound of 100 weight portions, the M-phthalic acid kind polyester polyalcohol of 30 weight portions and the ethylenediamines PPG of 30 weight portions), the copolymer of the polydimethylsiloxane--polyoxyalkylene-hydrocarbon of 2 weight portions, 0.03 the triethanolamine of weight portion, 0.5 the dibutyl tin laurate of weight portion, 2.5 the water of weight portion, with the 24.5kg poly methylene poly phenyl poly isocyanate, and 0.1kg pigment carbon black (pigment), and evenly mix, but make the polyurathamc adhesive;
3, the foam beads of pulverizing is placed mechanical agitator, in the time of stirring, with above-mentioned polyurathamc adhesive by injecting in the Sprayable 120s, the foam beads foamed material that obtains mixing;
4, the above-mentioned foamed material that mixes is all packed into one long 2.4 meters, wide 1.2 meters, in the high 0.5 meter steel die, die surface preheating reaches 30 ℃, exert pressure, control mold thickness be 0.3 meter, react 2 hours until composite foam slaking moulding.
5, remove applied pressure, after the sheet material demoulding, make composite foam sheet.Its mechanical mechanics property data are as shown in table 1.
Embodiment 2
Select the crosslinked polyvinyl chloride structural foam leftover pieces and the defective products of same specification, prepare the regeneration composite foam sheet according to following steps:
1,48kg crosslinked polyvinyl chloride structural foam leftover pieces and defective products are cut into pieces after, put in the pulverizer, be ground into the foam beads that is of a size of 1-3cm;
2, take by weighing the polyurethane foam combination material that 21kg mixes according to following ratio: the hydroxyl value of 100 weight portions is that 390-450mgKOH/g, viscosity are the PPG of 2000-2500mPas, the dimethyl siloxane of 1.5 weight portions, the N of 0.2 weight portion, the water of the stannous octoate of N-dimethyl cyclohexyl amine, 0.8 weight portion, 1 weight portion, with the 41kg poly methylene poly phenyl poly isocyanate, and evenly mix, but make the polyurathamc adhesive;
3, the foam beads of pulverizing is placed mechanical agitator, in the time of stirring, with above-mentioned polyurathamc adhesive by injecting the foam beads foamed material that obtains mixing in the perfusion form 60s;
4, the above-mentioned foamed material that mixes is all packed into one long 2.4 meters, wide 1.2 meters, in the high 0.5 meter steel die, die surface preheating reaches 60 ℃, exert pressure, the control mold thickness is 0.3 meter, reacts 1.5 hours until composite foam slaking moulding.
5, remove applied pressure, after the sheet material demoulding, make the hard composite foam sheet.Its mechanical mechanics property data are as shown in table 1.
Embodiment 3
Select the crosslinked polyvinyl chloride structural foam leftover pieces and the defective products of same specification, prepare the regeneration composite foam sheet according to following steps:
1,40kg crosslinked polyvinyl chloride structural foam leftover pieces and defective products are cut into pieces after, put in the pulverizer, be ground into the foam beads that is of a size of 2-5cm;
2, take by weighing the polyurethane foam combination material that 22kg mixes according to following ratio: (hydroxyl value that comprises 65 weight portions is toluenediamine/ethylene oxide/propylene oxide PPG of 450-470mgKOH/g to the combination polyol compound of 100 weight portions, the viscosity of 25 weight portions is that 650-700mPas PPG and viscosity are the PPOX polyalcohol of 100mPas), 0.5 the copolymer of the polydimethylsiloxane--polyoxyalkylene-hydrocarbon of weight portion, 0.02 the triethylene diamine of weight portion, 0.4 the stannous octoate of weight portion, the water of 3 weight portions, with the 26.5kg poly methylene poly phenyl poly isocyanate, and evenly mix, but make the polyurathamc adhesive;
3, the foam beads of pulverizing is placed mechanical agitator, in the time of stirring, with above-mentioned polyurathamc adhesive by injecting the foam beads foamed material that obtains mixing in the perfusion form 90s;
4, the above-mentioned foamed material that mixes is all packed into one long 2.4 meters, wide 1.2 meters, in the high 0.5 meter steel die, die surface preheating reaches 35 ℃, exert pressure, control mold thickness be 0.2 meter, react 1 hour until composite foam slaking moulding.
5, remove applied pressure, after the sheet material demoulding, make the hard composite foam sheet.Its mechanical mechanics property data are as shown in table 1.
Embodiment 4
Select the crosslinked polyvinyl chloride structural foam leftover pieces and the defective products of same specification, prepare the regeneration composite foam sheet according to following steps:
1,58kg crosslinked polyvinyl chloride structural foam leftover pieces and defective products are cut into pieces after, put in the pulverizer, be ground into the foam beads that is of a size of 2-3cm;
2, take by weighing the polyurethane foam combination material that 12kg mixes according to following ratio: (hydroxyl value that comprises 55 weight portions is the diisopropanolamine (DIPA) PPG of 320-330mgKOH/g to the combination polyol compound of 100 weight portions, the hydroxyl value of 35 weight portions is that the hydroxyl value of 200mgKOH/g PPG and 10 weight portions is the 600mgKOH/g PPG), the dimethyl siloxane of 3 weight portions, 0.03 the triethanolamine of weight portion, 0.1 the dibutyl tin laurate of weight portion, 3.5 the water of weight portion, with the 26.5kg poly methylene poly phenyl poly isocyanate, and 1.5kg fire retardant, and evenly mix, but make the polyurathamc adhesive;
3, the foam beads of pulverizing is placed mechanical agitator, in the time of stirring, with above-mentioned polyurathamc adhesive by injecting in the Sprayable 120s, the foam beads foamed material that obtains mixing;
4, the above-mentioned foamed material that mixes is all packed into one long 2.4 meters, wide 1.2 meters, in the high 0.5 meter steel die, die surface preheating reaches 60 ℃, exert pressure, control mold thickness be 0.3 meter, react 3 hours until composite foam slaking moulding.
5, remove applied pressure, after the sheet material demoulding, make the hard composite foam sheet.After testing, the oxygen index (OI) of this composite foam is 32.2.Its mechanical mechanics property data are as shown in table 1.
Be the physical and mechanical properties of the composite foam material of investigating the present invention's preparation, with the foamed material that makes test performance in the requsst listed below:
Compression performance: integral foam is cut into the sample that diameter is 50mm, high 50mm, test by ISO 844, loading velocity is 5mm/min.
Tensile property: with the sample of integral foam cut growth 50.8mm, wide 50.8mm, high 12.7mm, test by ASTMC297, loading velocity is 0.5mm/min.
Cutting performance: with the sample of integral foam cut growth 152.5mm, wide 63.5mm, high 12.7mm, test by ASTMC273, loading velocity is 1mm/min.
The mechanical mechanics property tables of data of table 1 embodiment 1-4
Annotate: all values are the test value under+23 ℃.
Composite foam sheet of the present invention, but one-shot forming, after also can making slab, jagsaw, be cut into the sheet material of all size, both had the good mechanical mechanics property of crosslinked polyvinyl chloride structural foam (comprising compression performance, tensile property and cutting performance etc.), heat resistance and fire resistance etc., have again polyurethane foam quality softness concurrently, the characteristics of good toughness. Overcome shortcoming separately, bring into play common advantage, can be directly used in the laminboard layer of construction wall, permanent or one off houses top, door, window, also can with composite manufacturing industry, transportation and the building equivalent-load sandwich sheet such as aluminium sheet.
Claims (12)
1. a method that adopts the crosslinked polyvinyl chloride structural foam waste material to produce composite foam sheet is characterized in that comprising the steps:
1) the crosslinked polyvinyl chloride structural foam waste material is ground into foam beads;
2) with the isocyanates of 120-150 weight portion, and evenly mix, but make expansion type polyurethane binder by the surfactant of the polyol compound of 100 weight portions, 0.2-3 weight portion, the catalyst of 0.1-2 weight portion, the polyurethane foam combination material that the blowing agent of 1-5 weight portion is formed;
3) foam beads that 100 weight portion step 1) are made and 25-233 weight portion step 2) expansion type polyurethane binder of obtaining mixes and stirs, and obtains the foam beads foamed material;
4) the foam beads foamed material that step 3) is made is moved into foaming in the mould;
5) make composite foam sheet after the demoulding.
2. method according to claim 1, it is characterized in that: crosslinked polyvinyl chloride structural foam waste material weight is the composite foam sheet gross weight 40%-65% that step 5) makes.
3. method according to claim 1, it is characterized in that: the size of the foam beads that step 1) obtains is: 0.5-10cm.
4. as method as described in the claim 3, it is characterized in that: the size of the foam beads that step 1) obtains is: 1-5cm.
5. method according to claim 1 is characterized in that: step 2) described in the NCO mass content of isocyanates be 26.0-33.6%, average functionality is 2.0-3.0.
6. as method as described in the claim 5, it is characterized in that: step 2) described in isocyanates be poly methylene poly phenyl poly isocyanate, its NCO mass content is 30.5-32.5%, average functionality is 2.5-2.8.
7. method according to claim 1 is characterized in that: step 2) described blowing agent is water.
8. method according to claim 1, it is characterized in that: step 2) when preparing expansion type polyurethane binder, polyurethane foam combination material is not less than 30s with the cream time of isocyanate reaction, so that expansion type polyurethane binder can not mix with crosslinked polyvinyl chloride structural foam before the foaming.
9. method according to claim 1 is characterized in that: step 2) hydroxyl value of described polyalcohol is 200-600mgKOH/g, viscosity is 100-3500mPas.
10. method according to claim 1, it is characterized in that: the mixing time in the step 3) is 30s-600s.
11. method according to claim 1, it is characterized in that: the mold temperature in the step 4) is 30-80 ℃.
12. method is characterized in that: cooling forming after foamable reaction 1-3 hour in the step 4) according to claim 1.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585137A (en) * | 2011-12-23 | 2012-07-18 | 山东东大一诺威聚氨酯有限公司 | Environmentally-friendly high-strength regenerated foam polyurethane adhesive, and preparation method and use method thereof |
| CN103102468A (en) * | 2012-12-30 | 2013-05-15 | 浙江工业大学 | Foamed plugging fireproof material |
| CN106907871A (en) * | 2017-01-17 | 2017-06-30 | 广西吉宽太阳能设备有限公司 | A kind of solar energy water tank shell |
| CN107418104A (en) * | 2017-08-30 | 2017-12-01 | 山东盈九新能源科技有限公司 | Polyvinyl chloride foam core leftover pieces and compound polyurethane material and preparation method thereof |
| CN114031865A (en) * | 2021-11-05 | 2022-02-11 | 保定维赛新材料科技股份有限公司 | Cross-linked PVC foam waste artificial board and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9601445D0 (en) * | 1996-01-25 | 1996-03-27 | Ciba Geigy Ag | Adhesive |
| CN101560309A (en) * | 2009-05-19 | 2009-10-21 | 林中选 | Method for reclaiming polyurethane (PU) waste material |
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- 2009-12-09 CN CN200910232399.5A patent/CN101733893B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585137A (en) * | 2011-12-23 | 2012-07-18 | 山东东大一诺威聚氨酯有限公司 | Environmentally-friendly high-strength regenerated foam polyurethane adhesive, and preparation method and use method thereof |
| CN103102468A (en) * | 2012-12-30 | 2013-05-15 | 浙江工业大学 | Foamed plugging fireproof material |
| CN103102468B (en) * | 2012-12-30 | 2015-08-05 | 浙江工业大学 | A kind of foam blocking fire-retardant material |
| CN106907871A (en) * | 2017-01-17 | 2017-06-30 | 广西吉宽太阳能设备有限公司 | A kind of solar energy water tank shell |
| CN107418104A (en) * | 2017-08-30 | 2017-12-01 | 山东盈九新能源科技有限公司 | Polyvinyl chloride foam core leftover pieces and compound polyurethane material and preparation method thereof |
| CN114031865A (en) * | 2021-11-05 | 2022-02-11 | 保定维赛新材料科技股份有限公司 | Cross-linked PVC foam waste artificial board and preparation method thereof |
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