CN107383305A - Difficult degradation technical polyurethane product waste regenerated Application way and reconstituted product - Google Patents
Difficult degradation technical polyurethane product waste regenerated Application way and reconstituted product Download PDFInfo
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- CN107383305A CN107383305A CN201710732474.9A CN201710732474A CN107383305A CN 107383305 A CN107383305 A CN 107383305A CN 201710732474 A CN201710732474 A CN 201710732474A CN 107383305 A CN107383305 A CN 107383305A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3278—Hydroxyamines containing at least three hydroxy groups
- C08G18/3281—Hydroxyamines containing at least three hydroxy groups containing three hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3225—Polyamines
- C08G18/3228—Polyamines acyclic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3275—Hydroxyamines containing two hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of difficult degradation technical polyurethane product waste regenerated Application way and reconstituted product, it is related to high polymer material utilization technology field.The regeneration method comprises the following steps：By the technical polyurethane product leftover bits and pieces of crushing, crosslinking agent, tin catalyst and water is well mixed, compacting and steam are heat aging, reconstituted product is obtained.The present invention alleviates the difficult degradation of technical polyurethane product, not disposable, the polyurethane reconstituted product poor performance produced at present, has the defects of being easily deformed and collapsing.The inventive method is using solid particle leftover bits and pieces as raw material, the cross-linking reaction, then by suppressing, being molded to obtain regenerative polyurethane product again in the presence of crosslinking agent, tin catalyst and water.By recycling pollution of the technical polyurethane product leftover bits and pieces reduction to environment.The reconstituted product density that is obtained by the inventive method is big, hardness is high, has and is unlikely to deform the advantages of being collapsed with difficulty.
Description
Technical field
The present invention relates to high polymer material utilization technology field, in particular to a kind of poly- ammonia of difficult degradation industry
Ester product waste regenerated Application way and reconstituted product.
Background technology
For the technical polyurethane family macromolecule material product such as sponge products, add in material preparation process and in material
Work into furniture (such as Sofa cushion etc.), automobile cushion, foot pad, scald the product such as platform, composite cotton fabric during, inevitably,
Substantial amounts of leftover bits and pieces can be produced, trade waste is generally used as and disposes.Because polyurethane products industrial waste is not easy
Degraded, substantial amounts of space can be taken by directly burying, and aggravate the harm of garbage-surrounded city；Directly burn, caused flue gas can be for ring
Cause greatly to pollute in border.
Traditional technical polyurethane product, using liquid charging stock, is generated solid when making by the reaction with foaming agent
Body polyurethane material.Occurs the reprocessing product of some technical polyurethane products on the market at present, as renewable sponge produces
Product, but because renewable sponge is reprocessing product, so losing mostly, sponge its elasticity is good, indeformable feature.
In view of this, it is special to propose the present invention.
The content of the invention
An object of the present invention is to provide a kind of difficult degradation technical polyurethane product waste regenerated Application way, with
The leftover bits and pieces of the technical polyurethane product of recycling produces regenerative polyurethane product, reduces and be produced into as raw material
This, reconstituted product has that density is big, hardness is high, is unlikely to deform and the advantages of difficulty collapses.
The second object of the present invention is to provide one kind using difficult degradation technical polyurethane product waste regenerated profit
The reconstituted product obtained with method, the reconstituted product safety and environmental protection, without harmful substance have that density is big, hardness is high, not variable
The advantages of shape and difficulty collapse, available for fields such as making sofa, mattress, executive chair, sports equipment, automatic foot-mat, ground cushions.
In order to realize the above-mentioned purpose of the present invention, spy uses following technical scheme：
A kind of difficult degradation technical polyurethane product waste regenerated Application way, comprises the following steps：
The technical polyurethane product leftover bits and pieces of crushing, crosslinking agent, tin catalyst and water are well mixed, compacting and steam add
Thermal maturation, obtain reconstituted product.
Further, on the basis of technical scheme provided by the invention, the parts by weight of reaction each component are poly- with industry
Urethane product leftover bits and pieces addition is 100 parts by weight meters：Crosslinking agent 15-20 parts, tin catalyst 0.2-0.3 parts and water 2-3 parts.
Preferably, the parts by weight of reaction each component are using technical polyurethane product leftover bits and pieces addition as 100 parts by weight
Meter：Crosslinking agent 16-18 parts, tin catalyst 0.2-0.3 parts and water 2-3 parts.
Further, on the basis of technical scheme provided by the invention, mixing speed during mixing is 80-150r/min；
Mixing time is 5-10min.
Preferably, on the basis of technical scheme provided by the invention, the density of product is 40-250kg/m after compacting3。
Further, on the basis of technical scheme provided by the invention, vapor (steam) temperature is 110-150 DEG C during curing, air pressure
It is worth for 1-2 atmospheric pressure, curing time 20-40min.
Preferably, on the basis of technical scheme provided by the invention, of the technical polyurethane product leftover bits and pieces of crushing
Grain particle diameter is 0.3-20mm.
Further, on the basis of technical scheme provided by the invention, in addition to recovery technical polyurethane product leftover bits and pieces
The step of screening slagging-off is carried out to leftover bits and pieces afterwards.
Preferably, on the basis of technical scheme provided by the invention, a kind of typical difficult degradation technical polyurethane product
Waste regenerated Application way, comprises the following steps：
(a) technical polyurethane product leftover bits and pieces is reclaimed, lightweight slag charge is blown out by grid, heavy slag charge is passed through into vibration
Weed out and remove；
(b) the technical polyurethane product leftover bits and pieces that step (a) obtains is crushed to the particle that particle diameter is 0.3-20mm；
(c) technical polyurethane product leftover bits and pieces, crosslinking agent, tin catalyst and the water pump after the crushing for obtaining step (b)
Enter in reactor, 5-10min is mixed with 80-150r/min mixing speed；
(d) granule materials for obtaining step (c), which are put into die box, is suppressed, and the density of product is 40- after compacting
250kg/m3；
(e) steam is filled with into die box, inflation rear mold the temperature inside the box is 110-150 DEG C, and atmospheric pressure value is 1-2 air
Pressure；
(f) 20-40min is cured in die box, obtains reconstituted product.
Wherein, in step (c), reaction with the parts by weight of each component using technical polyurethane product leftover bits and pieces addition as
100 parts by weight meters：Crosslinking agent 15-20 parts, tin catalyst 0.2-0.3 parts and water 2-3 parts.
A kind of reconstituted product obtained using above-mentioned difficult degradation technical polyurethane product waste regenerated Application way.
A kind of regeneration cotton obtained using above-mentioned difficult degradation technical polyurethane product waste regenerated Application way.
Compared with the prior art, the present invention has the advantages that：
(1) the inventive method obtains regenerative polyurethane product by reclaiming technical polyurethane leftover bits and pieces, realizes for difficulty
The recycling of degraded technical polyurethane product, Environmental Safety, reduces production cost, this method whole process is with granular solids
Raw material is main body, does not use liquid form to complete, and granular leftover bits and pieces outer surface is wrapped up crosslinking agent by stirring,
Again cross-linking reaction in the presence of tin catalyst and water, then by compacting be not easy product loose, density is high, is unlikely to deform, tie
Close that steam is heat aging obtains regenerative polyurethane product.
(2) the reconstituted product density produced by the inventive method is big, up to 40-250kg/m3, hardness is high, has not
Yielding and difficult the advantages of collapsing, available for fields such as making sofa, mattress, executive chair, sports equipment, automatic foot-mat, ground cushions.
(3) the inventive method is safe and environment-friendly, and obtained reconstituted product is not leaded after testing, cadmium, mercury and PBBs etc. have
Evil material, meets the quality requirement of regenerative polyurethane product, is a kind of green product.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the present invention.It is unreceipted specific in embodiment
Condition person, the condition suggested according to normal condition or manufacturer are carried out.Agents useful for same or the unreceipted production firm person of instrument, it is
The conventional products that can be obtained by commercially available purchase.
A kind of according to an aspect of the invention, there is provided difficult degradation technical polyurethane product waste regenerated utilization side
Method, comprise the following steps：
The technical polyurethane product leftover bits and pieces of crushing, crosslinking agent, tin catalyst and water are well mixed, compacting and steam add
Thermal maturation, obtain reconstituted product.
Technical polyurethane product refers to main component product made of polyurethane material in the present invention, typical but non-limiting
Technical polyurethane product include sponge products, such as Sofa cushion, automobile cushion, foot pad, scald platform, composite cotton fabric product.
Technical polyurethane product leftover bits and pieces refers to such technical polyurethane product and remains or used in product in process
Mainly include main body sponge, the leftover of bolt of cloth, the end of a thread, plastics in the left leftover bits and pieces got off or waste material, such as the leftover bits and pieces of sponge products afterwards
Or stone etc..
Crosslinking agent can not have the conditional crosslinking agent commonly used using polyurethane material, typical but non-limiting crosslinking agent
For ethylene glycol, dipropyl (support) glycol, glycerine, diethylene glycol (DEG), triethylene glycol, 1,4- butanediols, triethanolamine, diethanol amine or second two
One or more in amine.
Typical but non-limiting tin catalyst is stannous octoate, to having reacted catalytic action.
Water serves as foaming agent.
The inventive method is by the way that technical polyurethane product leftover bits and pieces, crosslinking agent, tin catalyst and the water of crushing are mixed
Close, mixed material is in granular form, and crosslinking agent is wrapped in the outer surface of graininess leftover bits and pieces, in the catalysis of tin catalyst and water
Under effect, crosslink reaction and re-form polyurethane products.
It is preferred that it is well mixed by the way of stirring.
Steam heating can be accelerated to chemically react and be crosslinked, and can kill bacterium.
Due to being the reprocessing product re-worked using leftover bits and pieces, so the polyurethane material of generation is more loose, lose
The property of the original polyurethane products in part is gone, density and hardness is low, is easily deformed, and by using the method for compacting, makes product
Compacting, the density and hardness of reconstituted product is improved, the product for making to produce is unlikely to deform, then is cured into by steam heating
Type, to accelerate to chemically react and to be crosslinked, preferably sterilize, ultimately form that density is high and the production of on-deformable regenerative polyurethane
Product.
Because polyurethane products industrial waste is not degradable, substantial amounts of space can be taken by directly burying, and aggravated rubbish and enclosed
The harm in city；Directly burn, caused flue gas can cause greatly to pollute for environment.Traditional technical polyurethane product is making
When using liquid charging stock, pass through the reaction with foaming agent and generate solid polyurethane material.Reprocessing production on the market at present
Product, do not collapsed as renewable sponge loses it mostly, indeformable feature.
The whole process of the inventive method is carried out with solid phase form, directly using granular solids leftover bits and pieces as raw material, it is not necessary to
Raw material is dissolved in liquid and reacted, granular leftover bits and pieces outer surface is wrapped up crosslinking agent by mixing, in tin catalyst and water
In the presence of cross-linking reaction again, then by compacting be not easy product loose, density is high, is unlikely to deform, heated with reference to steam ripe
Change obtains regenerative polyurethane product, obtains regenerative polyurethane product by reclaiming technical polyurethane leftover bits and pieces, realizes for difficulty
The recycling of degraded technical polyurethane product, reduces production cost, meets current environmental protection concept.This method obtains again
Product density is big, hardness is high, has and is unlikely to deform the advantages of being collapsed with difficulty.
In a preferred embodiment, the parts by weight of reaction each component are added with technical polyurethane product leftover bits and pieces
It is 100 parts by weight meters to enter amount：Crosslinking agent 15-20 parts, tin catalyst 0.2-0.3 parts and water 2-3 parts.
Preferably, course of reaction can be carried out in a kettle, proportionally by under the technical polyurethane product after crushing
Heel, crosslinking agent, tin catalyst and water, which are pumped into reactor, to be reacted.
The parts by weight of typical but non-limiting crosslinking agent are, for example, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts or 20 parts.
The parts by weight of typical but non-limiting tin catalyst are, for example, 0.2 part, 0.22 part, 0.24 part, 0.26 part,
0.28 part or 0.3 part.
The parts by weight of typical but non-limiting water are, for example, 2 parts, 2.2 parts, 2.4 parts, 2.6 parts, 2.8 parts or 3 parts.
Crosslinking agent is set to be wrapped in all postindustrial polyurethane products leftover bits and pieces of crushing by a certain proportion of crosslinking agent
On the outer surface of particle, reacted by a certain proportion of tin catalyst and water come catalytic crosslinking.
Preferably, the parts by weight of reaction each component are using technical polyurethane product leftover bits and pieces addition as 100 weight
Part meter：Crosslinking agent 16-18 parts, tin catalyst 0.2-0.3 parts and water 2-3 parts.
In a preferred embodiment, mixing speed during mixing is 80-150r/min；Mixing time is 5-
10min。
Typical but non-limiting mixing speed be 80r/min, 90r/min, 100r/min, 110r/min, 120r/min,
130r/min, 140r/min or 150r/min.
Typical but non-limiting mixing time is 5min, 6min, 7min, 8min, 9min or 10min.
By certain mixing time, it is sufficiently mixed leftover bits and pieces, crosslinking agent, tin catalyst and water, and crosslinking agent can
Equably it is wrapped in leftover bits and pieces outer surface.
In a preferred embodiment, the density of product is 40-250kg/m after compacting3。
The typical but non-limiting density of product is, for example, 40kg/m after compacting3、50kg/m3、60kg/m3、70kg/m3、
80kg/m3、90kg/m3、100kg/m3、150kg/m3、200kg/m3Or 250kg/m3, the product hardness in the density range
It is good, the problems such as being not likely to produce deformation and collapse.
Preferably, pressing process is carried out in die box.The degree of compacting is according to height, the density for needing compacting to reach
(target density) and weight determine, below equation can be used to calculate：
The weight of the height-material of pressing stroke (pressure head the depression distance)=casing/(width of the length X casing of casing
X target density), wherein, height, length, the unit of width and stroke are m；Unit of weight is kg；Density unit is kg/m3。
When target density is 100kg/m3When, 100kg materials, height 2m, width 1m, length 1m, it is 1m to be depressed into height；
150kg materials, height 2m, width 1m, length 1m, it is 0.66m to be depressed into height；200kg materials, height 2m, width 1m, length
1m, it is 0.5m to be depressed into height.
By using the method, it can shift to an earlier date and compaction, i.e. pressing stroke are calculated according to product objective density, pass through
Compacting obtains the product of specific density, can as needed selectively product compaction to obtain the reproduction of different densities
Product, applicability is good, is readily available high density product, makes reconstituted product density height, is unlikely to deform.
In a preferred embodiment, vapor (steam) temperature is 110-150 DEG C during curing, and atmospheric pressure value is 1-2 atmospheric pressure,
Curing time is 20-40min.
Preferably, steam is filled automatically in die box, is cured, is molded.
Inflation amount control method can be monitored with passage time, and special inflatable structure inflates 10min；Supervised also by atmospheric pressure value
Survey.
After inflation, the temperature inside the box maintains 110-150 degree, and atmospheric pressure value maintains 1-2 atmospheric pressure.
Typical but non-limiting vapor (steam) temperature is 110 DEG C, 120 DEG C, 130 DEG C, 140 DEG C or 150 DEG C.
Typical but non-limiting atmospheric pressure value is 1 atmospheric pressure or 2 atmospheric pressure.
The typical but non-limiting curing time is 20min, 25min, 30min, 35min or 40min.
By controlling curing temperature and curing time, material is set to obtain good curing effect, the formed product after curing
Property is good.Meanwhile steam heating can be accelerated to chemically react and be crosslinked, and play sterilization well in itself to leftover bits and pieces product and make
With.
In a preferred embodiment, technical polyurethane product leftover bits and pieces is crushed to that particle diameter is 0.3-20mm
Grain.
Preferably, crushing can use disintegrating apparatus to carry out.The size of powder particle diameter can be adjusted according to product purpose.
The particle for being crushed to 0.3-20mm facilitates leftover bits and pieces to react, and particle diameter is too small, is unfavorable for waste material disposal and use, grain
Footpath is excessive, and reaction is insufficient, and particle diameter can suitably be adjusted according to the purposes of product.
In a preferred embodiment, also include screening in technical polyurethane product leftover bits and pieces before crushing removing slag charge
The step of.
Screening slagging-off is carried out after nondegradable technical polyurethane product leftover bits and pieces is reclaimed, rejects waste residue, the leftover of bolt of cloth, line
Head, plastics etc.；
Elimination method can use artificial screening or instrument assisting sifting, and artificial screening typically distinguishes waste residue with color；Instrument
Device assisting sifting can be screened by automation equipment, be obstructed by air-blowing respective outer side edges grid, by the leftover of bolt of cloth, the end of a thread and modeling
The light materials such as material are blown out and pass through the hole of grid to realize and reject, and the slag charges such as heavier stone are rejected by vibratory sieve.
Removed the gred the impurity removed in leftover bits and pieces by screening, the polyurethane material in retained product as main component, is had
Beneficial to the acquisition more preferable reconstituted product of performance.
In a preferred embodiment, a kind of typical difficult degradation technical polyurethane product waste regenerated utilization side
Method, comprise the following steps：
(a) technical polyurethane product leftover bits and pieces is reclaimed, lightweight slag charge is blown out by grid, heavy slag charge is passed through into vibration
Weed out and remove；
(b) the technical polyurethane product leftover bits and pieces that step (a) obtains is crushed to the particle that particle diameter is 0.3-20mm；
(c) technical polyurethane product leftover bits and pieces, crosslinking agent, tin catalyst and the water pump after the crushing for obtaining step (b)
Enter in reactor, 5-10min is mixed with 80-150r/min mixing speed；
(d) granule materials for obtaining step (c), which are put into die box, is suppressed, and the density of product is 40- after compacting
250kg/m3；
(e) steam is filled with into die box, inflation rear mold the temperature inside the box is 110-150 DEG C, to accelerate to chemically react
And crosslinking, preferably sterilize, atmospheric pressure value is 1-2 atmospheric pressure；
(f) 20-40min is cured in die box, obtains reconstituted product.
Wherein, in step (c), reaction with the parts by weight of each component using technical polyurethane product leftover bits and pieces addition as
100 parts by weight meters：Crosslinking agent 15-20 parts, tin catalyst 0.2-0.3 parts and water 2-3 parts.
Preferably, weighing for technical polyurethane product leftover bits and pieces can want according to without product purpose in step (c)
Ask, and according to no mould and the requirement of foaming, be determined according to the target density for the product to be obtained.
The typical regeneration production technology includes sucting reaction kettle, addition after reclaiming leftover bits and pieces, crushing leftover bits and pieces, weighing automatically
Crosslinking agent, catalyst and crosslinking agent, stir, be automatically imported die box, compacting, it is automatic fill steam in die box, cure and into
Type, finished product is obtained, regenerative polyurethane product is obtained by reclaiming technical polyurethane leftover bits and pieces, realized poly- for difficult degradation industry
The recycling of urethane product, the technique easily operates, Environmental Safety, meets circular economy concept.
According to another aspect of the present invention, there is provided one kind uses above-mentioned difficult degradation technical polyurethane product leftover bits and pieces again
The reconstituted product that raw Application way obtains.
Preferably, reconstituted product is regeneration cotton.
The relatively current existing regenerative polyurethane product of reconstituted product obtained by using the regeneration method of the present invention
(regeneration cotton) has that density is big, hardness is high, is unlikely to deform and the advantages of difficulty collapses.
In order to further appreciate that the present invention, the inventive method and effect are done with reference to specific embodiment further in detail
Explanation.Each raw material of the present invention can pass through commercially available acquisition.
The technical polyurethane product used in embodiment is the polyurethane sponge product such as sofa, cushion, composite cotton fabric.Embodiment
The material that the middle technical polyurethane product leftover bits and pieces used is discarded by polyurethane sponge product during production.
Embodiment 1
A kind of difficult degradation technical polyurethane product waste regenerated Application way, comprises the following steps：
(a) recovery screening：Technical polyurethane product leftover bits and pieces is reclaimed, removes the impurity such as the leftover of bolt of cloth, the end of a thread, plastics；
(b) crush：Leftover bits and pieces is crushed to the particle that particle diameter is 0.3mm；
(c) react：Leftover bits and pieces after the 100kg that weighs crushing, is put into reactor, and add 15kg crosslinking agents, 0.25kg
Tin catalyst and 2.5kg water, 10min is mixed with 80r/min mixing speed；
(d) suppress：Reacted material is put into die box and suppressed, compacting growth 1m, wide 1m, high 1m case
Body；
(e) steam is filled with into die box, inflation rear mold the temperature inside the box is 110 DEG C, and atmospheric pressure value is 1 atmospheric pressure；
(f) 40min is cured in die box, obtains reconstituted product.
Embodiment 2
A kind of difficult degradation technical polyurethane product waste regenerated Application way, comprises the following steps：
(a) recovery screening：Technical polyurethane product leftover bits and pieces is reclaimed, removes the impurity such as the leftover of bolt of cloth, the end of a thread, plastics；
(b) crush：Leftover bits and pieces is crushed to the particle that particle diameter is 20mm；
(c) react：Leftover bits and pieces after the 100kg that weighs crushing, is put into reactor, and add 20kg crosslinking agents, 0.28kg
Tin catalyst and 2kg water, 5min is mixed with 150r/min mixing speed；
(d) suppress：Reacted material is put into die box and suppressed, compacting growth 1m, wide 1m, high 1m case
Body；
(e) steam is filled with into die box, inflation rear mold the temperature inside the box is 150 DEG C, and atmospheric pressure value is 2 atmospheric pressure；
(f) 20min is cured in die box, obtains reconstituted product.
Embodiment 3
A kind of difficult degradation technical polyurethane product waste regenerated Application way, comprises the following steps：
(a) recovery screening：Technical polyurethane product leftover bits and pieces is reclaimed, removes the impurity such as the leftover of bolt of cloth, the end of a thread, plastics；
(b) crush：Leftover bits and pieces is crushed to the particle that particle diameter is 0.5mm；
(c) react：Leftover bits and pieces after the 100kg that weighs crushing, is put into reactor, and add 16kg crosslinking agents, 0.26kg
Tin catalyst and 3kg water, 7min is mixed with 120r/min mixing speed；
(d) suppress：Reacted material is put into die box and suppressed, compacting growth 1m, wide 1m, high 0.4m case
Body；
(e) steam is filled with into die box, inflation rear mold the temperature inside the box is 120 DEG C, and atmospheric pressure value is 2 atmospheric pressure；
(f) 30min is cured in die box, obtains reconstituted product.
Embodiment 4
A kind of difficult degradation technical polyurethane product waste regenerated Application way, comprises the following steps：
(a) recovery screening：Technical polyurethane product leftover bits and pieces is reclaimed, removes the impurity such as the leftover of bolt of cloth, the end of a thread, plastics；
(b) crush：Leftover bits and pieces is crushed to the particle that particle diameter is 1mm；
(c) react：Leftover bits and pieces after the 100kg that weighs crushing, is put into reactor, and add 18kg crosslinking agents, 0.24kg
Tin catalyst and 2.2kg water, 8min is mixed with 90r/min mixing speed；
(d) suppress：Reacted material is put into die box and suppressed, compacting growth 1m, wide 1m, high 0.6m case
Body；
(e) steam is filled with into die box, inflation rear mold the temperature inside the box is 140 DEG C, and atmospheric pressure value is 1 atmospheric pressure；
(f) 25min is cured in die box, obtains reconstituted product.
Embodiment 5
A kind of difficult degradation technical polyurethane product waste regenerated Application way, comprises the following steps：
(a) recovery screening：Technical polyurethane product leftover bits and pieces is reclaimed, removes the impurity such as the leftover of bolt of cloth, the end of a thread, plastics；
(b) crush：Leftover bits and pieces is crushed to the particle that particle diameter is 2mm；
(c) react：Leftover bits and pieces after the 100kg that weighs crushing, is put into reactor, and add 17kg crosslinking agents, 0.22kg
Tin catalyst and 2.4kg water, 9min is mixed with 100r/min mixing speed；
(d) suppress：Reacted material is put into die box and suppressed, compacting growth 1m, wide 1m, high 0.8m case
Body；
(e) steam is filled with into die box, inflation rear mold the temperature inside the box is 130 DEG C, and atmospheric pressure value is 1 atmospheric pressure；
(f) 25min is cured in die box, obtains reconstituted product.
Embodiment 6
A kind of difficult degradation technical polyurethane product waste regenerated Application way, comprises the following steps：
(a) recovery screening：Technical polyurethane product leftover bits and pieces is reclaimed, removes the impurity such as the leftover of bolt of cloth, the end of a thread, plastics；
(b) crush：Leftover bits and pieces is crushed to the particle that particle diameter is 5mm；
(c) react：Leftover bits and pieces after the 100kg that weighs crushing, is put into reactor, and add 19kg crosslinking agents, 0.25kg
Tin catalyst and 2.6kg water, 6min is mixed with 120r/min mixing speed；
(d) suppress：Reacted material is put into die box and suppressed, compacting growth 1m, wide 1m, high 1.5m case
Body；
(e) steam is filled with into die box, inflation rear mold the temperature inside the box is 135 DEG C, and atmospheric pressure value is 1.5 atmospheric pressure；
(f) 35min is cured in die box, obtains reconstituted product.
Embodiment 7
A kind of difficult degradation technical polyurethane product waste regenerated Application way, comprises the following steps：
(a) recovery screening：Technical polyurethane product leftover bits and pieces is reclaimed, removes the impurity such as the leftover of bolt of cloth, the end of a thread, plastics；
(b) crush：Leftover bits and pieces is crushed to the particle that particle diameter is 10mm；
(c) react：Leftover bits and pieces after the 100kg that weighs crushing, is put into reactor, and add 20kg crosslinking agents, 0.2kg tin
Catalyst and 2.8kg water, 7min is mixed with 130r/min mixing speed；
(d) suppress：Reacted material is put into die box and suppressed, compacting growth 1m, wide 1m, high 2m case
Body；
(e) steam is filled with into die box, inflation rear mold the temperature inside the box is 145 DEG C, and atmospheric pressure value is 1 atmospheric pressure；
(f) 30min is cured in die box, obtains reconstituted product.
Embodiment 8
A kind of difficult degradation technical polyurethane product waste regenerated Application way, comprises the following steps：
(a) recovery screening：Technical polyurethane product leftover bits and pieces is reclaimed, removes the impurity such as the leftover of bolt of cloth, the end of a thread, plastics；
(b) crush：Leftover bits and pieces is crushed to the particle that particle diameter is 15mm；
(c) react：Leftover bits and pieces after the 100kg that weighs crushing, is put into reactor, and add 15kg crosslinking agents, 0.3kg tin
Catalyst and 3kg water, 8min is mixed with 100r/min mixing speed；
(d) suppress：Reacted material is put into die box and suppressed, compacting growth 1m, wide 1m, high 1.5m case
Body；
(e) steam is filled with into die box, inflation rear mold the temperature inside the box is 125 DEG C, and atmospheric pressure value is 2 atmospheric pressure；
(f) 36min is cured in die box, obtains reconstituted product.
Embodiment 9
Crosslinking agent is added in a kind of difficult degradation technical polyurethane product waste regenerated Application way, wherein step (c)
Measure for 10kg, other steps it is same as Example 1.
Embodiment 10
Tin catalyst is added in a kind of difficult degradation technical polyurethane product waste regenerated Application way, wherein step (c)
Amount be 0.1kg, other steps are same as Example 2.
Embodiment 11
The amount of addition water is in a kind of difficult degradation technical polyurethane product waste regenerated Application way, wherein step (c)
5kg, other steps are same as Example 3.
Embodiment 12
A kind of difficult degradation technical polyurethane product waste regenerated Application way, wherein step (e) curing temperature are 90 DEG C,
Other steps are same as Example 4.
Embodiment 13
A kind of difficult degradation technical polyurethane product waste regenerated Application way, wherein step (e) curing temperature are 180
DEG C, other steps are same as Example 5.
Comparative example
Renewable sponge is prepared using the method for the A patents of CN 105482437, its step includes：
(a) sponge leftover bits and pieces is put into pulverizer, is ground into sponge particle；
(b) the sponge particle of step (a) is put into reactor, adds Regenerative sponge glue, stirring, speed 120r/
Min, stir 20 minutes, obtain semi-finished product；
(c) semi-finished product of step (b) just sterilize, semi-finished product are put into closed disinfection room, bactericide is put into
In heater, heating fumigating is carried out, continues 2.5 hours；
(d) semi-finished product for just having sterilized step (c) are placed into autoclave sterilizer, carry out high-temp steam sterilizing 15-20
Minute；
(e) semi-finished product to have sterilized are put into compression forming in mould, aeration-drying, placed into closed container, injected
Nitrogen de-tastes, cutting packaging.
Renewable sponge product is produced using the method for embodiment 1-13 and comparative example, the property and performance of reconstituted product refer to
Mark is as shown in table 1.
The embodiment of table 1 and the renewable sponge product property performance indications of comparative example production
Note：Density, tensile strength and indentation force deflection (25%) are averaged, the press-in examination of indentation force deflection (25%) finger pressure head
25% measured value of sample thickness.
From table 1 it follows that the density of the reconstituted product obtained by the regeneration method of the present invention is high, hardness
Greatly, have and be unlikely to deform the advantages of being collapsed with difficulty, traditional technical polyurethane product is to use liquid charging stock in process of production
It is prepared with reference to foaming agent, the density of obtained technical polyurethane product is typically in 5~50kg/m3, and the present invention is again
Raw Application way is using solid particle as raw material, and highdensity reconstituted product, regenerative polyurethane product can be obtained by compacting
Density in 40~250kg/m3, by adjusting the compacting height of product, the product of different densities can be obtained as needed, because
This, the reconstituted product that solid material reacts to obtain can obtain the product of wider density range, and not only leftover bits and pieces can be carried out
Recycle, and the product of different densities can obtain wider application.
The reconstituted product tensile strength and indentation force deflection that the inventive method obtains are higher, are unlikely to deform and collapse, embodiment 1
The average tensile strength for the reconstituted product that~8 methods obtain is in 90-115KPa, and average indentation force deflection (25%) is in 130-150N.
Compared with Example 1, the usage amount of crosslinking agent is few for embodiment 9, embodiment 10 compared with Example 2, tin catalyst
Usage amount it is few, compared with Example 3, the usage amount of water is more for embodiment 11, the tensile strength of the reconstituted product of acquisition and collapses
Hardness has declined.It can be seen that leftover bits and pieces, crosslinking agent, catalyst and water keep suitable proportion, more preferable intensity, hardness can be obtained
With the reconstituted product of performance.
Compared with Example 4, curing temperature is relatively low for embodiment 12, embodiment 13 compared with Example 5, curing temperature compared with
Height, preferably curing effect can not be obtained, formed product is poor, and tensile strength and indentation force deflection have also declined.It is it can be seen that suitable
Suitable curing temperature can be such that product is more preferably molded, and further lift properties of product.
The regeneration cotton tensile strength and indentation force deflection produced using comparative example are relatively low, are produced again with the inventive method
Raw cotton product gap is larger, it is seen then that the inventive method can be obtained very by each step, the reasonable cooperation added between material
Good effect, obtained reconstituted product various aspects of performance are outstanding.
In addition, the reconstituted product safety and environmental protection that the inventive method is produced, by detection, does not contain lead, cadmium, mercury and more bromines
The harmful substances such as biphenyl, meet the quality requirement of regenerative polyurethane product, be a kind of green product.
In summary, the inventive method obtains regenerative polyurethane product by reclaiming technical polyurethane leftover bits and pieces, realizes
Recycling for difficult degradation technical polyurethane product, Environmental Safety reduce production cost, this method whole process with
Grain solid material is main body, does not use liquid form to complete, and hands over granular leftover bits and pieces outer surface parcel by stirring
Join agent, the cross-linking reaction again in the presence of tin catalyst and water, then by compacting be not easy product loose, density is high, is not easy
Deformation, regenerative polyurethane product is obtained with reference to steam is heat aging.Regenerative polyurethane product density is big, hardness is high, has and is not easy
The advantages of deformation and difficulty collapse, it is widely used, available for fields such as making sofa, mattress, executive chair, sports equipments.
Although illustrate and describing the present invention with specific embodiment, but will be appreciated that without departing substantially from the present invention's
Many other change and modification can be made in the case of spirit and scope.It is, therefore, intended that wrap in the following claims
Include all such changes and modifications belonged in the scope of the invention.
Claims (10)
1. a kind of difficult degradation technical polyurethane product waste regenerated Application way, it is characterised in that comprise the following steps：
By the technical polyurethane product leftover bits and pieces of crushing, crosslinking agent, tin catalyst and water is well mixed, compacting and steam heating are ripe
Change, obtain reconstituted product.
2. according to the difficult degradation technical polyurethane product waste regenerated Application way described in claim 1, it is characterised in that anti-
Counted using the parts by weight of each component using technical polyurethane product leftover bits and pieces addition as 100 parts by weight：Crosslinking agent 15-20 parts,
Tin catalyst 0.2-0.3 parts and water 2-3 parts；
Preferably, reaction is counted with the parts by weight of each component using technical polyurethane product leftover bits and pieces addition as 100 parts by weight：Hand over
Join agent 16-18 parts, tin catalyst 0.2-0.3 parts and water 2-3 parts.
3. according to the difficult degradation technical polyurethane product waste regenerated Application way described in claim 1 or 2, its feature exists
Mixing speed when, mixing is 80-150r/min；Mixing time is 5-10min.
4. according to the difficult degradation technical polyurethane product waste regenerated Application way described in claim 1 or 2, its feature exists
In the density of product is 40-250kg/m after compacting3。
5. according to the difficult degradation technical polyurethane product waste regenerated Application way described in claim 1 or 2, its feature exists
Vapor (steam) temperature is 110-150 DEG C when, curing, and atmospheric pressure value is 1-2 atmospheric pressure, curing time 20-40min.
6. according to the difficult degradation technical polyurethane product waste regenerated Application way described in claim 1 or 2, its feature exists
In the grain diameter of the technical polyurethane product leftover bits and pieces of crushing is 0.3-20mm.
7. according to the difficult degradation technical polyurethane product waste regenerated Application way described in claim 6, it is characterised in that also
The step of including carrying out screening slagging-off to leftover bits and pieces after recovery technical polyurethane product leftover bits and pieces.
8. according to the difficult degradation technical polyurethane product waste regenerated Application way described in claim 1 or 2, its feature exists
In comprising the following steps：
(a) technical polyurethane product leftover bits and pieces is reclaimed, lightweight slag charge is blown out by grid, heavy slag charge is weeded out by vibration
Remove；
(b) the technical polyurethane product leftover bits and pieces that step (a) obtains is crushed to the particle that particle diameter is 0.3-20mm；
(c) technical polyurethane product leftover bits and pieces, crosslinking agent, tin catalyst and the water after the crushing for obtaining step (b) are pumped into instead
Answer in kettle, 5-10min is mixed with 80-150r/min mixing speed；
(d) granule materials for obtaining step (c), which are put into die box, is suppressed, and the density of product is 40- after compacting
250kg/m3；
(e) steam is filled with into die box, inflation rear mold the temperature inside the box is 110-150 DEG C, and atmospheric pressure value is 1-2 atmospheric pressure；
(f) 20-40min is cured in die box, obtains reconstituted product；
Wherein, in step (c), the parts by weight of reaction each component are using technical polyurethane product leftover bits and pieces addition as 100 weights
Measure part meter：Crosslinking agent 15-20 parts, tin catalyst 0.2-0.3 parts and water 2-3 parts.
9. a kind of difficult degradation technical polyurethane product waste regenerated Application way using described in claim any one of 1-8 obtains
The reconstituted product arrived.
A kind of 10. difficult degradation technical polyurethane product waste regenerated Application way using described in claim any one of 1-8
Obtained regeneration cotton.
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