CN104356352A - Sponge and preparation method thereof - Google Patents
Sponge and preparation method thereof Download PDFInfo
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- CN104356352A CN104356352A CN201410719918.1A CN201410719918A CN104356352A CN 104356352 A CN104356352 A CN 104356352A CN 201410719918 A CN201410719918 A CN 201410719918A CN 104356352 A CN104356352 A CN 104356352A
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- polyurethane sponge
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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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
-
- 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
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
- C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
-
- 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
- C08G2110/0041—Foam properties having specified density
- C08G2110/005—< 50kg/m3
Abstract
The invention provides a sponge and a preparation method thereof. The sponge is prepared from the following raw materials in parts by mass: 45-60 parts of toluene diisocyanate, 25-35 parts of diisocyanate, 4-6 parts of water, 1-2 parts of a polymerization catalyst, 45-60 parts of polyether glycol, 3-4 parts of a flame retardant and 3-4 parts of a foaming agent. The preparation method comprises the following steps: (A) mixing and foaming toluene diisocyanate, 2.5-3 parts of water and 1-2 parts of the foaming agent, thereby obtaining polymeric sponge; (B) uniformly stirring diisocyanate, the rest water, stannous octoate, polyether glycol and the flame retardant, thereby obtaining a first mixture; and (C) fixing the polymeric sponge on the top of a mold, putting the first mixture into the mold, mixing and foaming the first mixture with the residual foaming agent to form an emulsion sponge, performing polymerization reaction on the emulsion sponge with the polymeric sponge, and forming, cooling and cutting, thereby obtaining a product. The preparation method has the advantages that the operation is simple, no adhesive is adopted for adhesion, and the like.
Description
Technical field
The present invention relates to sponge and make field, in particular to a kind of sponge and preparation method thereof.
Background technology
Sleep is healthy basis, how can just have healthy sleep? except the reason of the aspects such as work, life, health, psychology, the healthy bedding having " health, comfortable, attractive in appearance, durable " is the key point obtaining high quality sleep.Along with the continuous progress of material progress and technical matters, the mattress kind that modern people use tends to diversification gradually, mainly contains: spring mattress, palm mattress, latex bed mattress, water bed mattress, pneumatic mattress, magnetic mattress etc.
The material of the inner bed course of these mattresses itself has certain ventilation property, but because mattress bed course stacks often through multilayer material group, as the cloth on top layer, sponge, latex, cotton, gum sprayed cotton, non-woven fabrics, cotton felt, spring, the mattress inner air circulation limit is slowly permeated in a limited space, thus cause that mouldy, distortion appears in mattress material inside too early, spring gets rusty, human consumer's degree of comfort decreased and use time susceptible to heating, but also ventilation property and bad hydraulic permeability can be there is, be easily out of shape the shortcomings such as cost is higher.Simultaneously; in order to the steadiness between firm bed course or bed course or between bed course and spring; people can use all kinds of different standards glue in mattress production process; thus produce the formaldehyde material of harm human consumer in various degree; cause causing chronic respiratory tract disease, cause the reduction of newborn infant's physique, Long Term Contact; also may cause nasal cavity, oral cavity, nasopharynx, throat, skin and gastral cancer, this glue both not environmentally also can damage the health of the mankind.
In view of this, special proposition the present invention.
Summary of the invention
The first object of the present invention is to provide a kind of sponge, and described sponge has the advantages such as environmental protection, permeability are good, light weight.
The second object of the present invention is to provide the preparation method of a kind of described sponge, the preparation method of this sponge have simple to operate, carry out bonding without glue, the advantage such as once shaped.
In order to realize above-mentioned purpose of the present invention, spy by the following technical solutions:
Embodiments provide a kind of sponge, its starting material comprise following component according to the mass fraction: tolylene diisocyanate 45-60 part, vulcabond 25-35 part, water 4-6 part, polymerizing catalyst 1-2 part, polyether glycol 45-60 part, fire retardant 3-4 part, whipping agent 3-4 part.
Preferably, its starting material comprise following component according to the mass fraction: tolylene diisocyanate 45-50 part, vulcabond 25-30 part, water 4-5 part, polymerizing catalyst 1-1.5 part, polyether glycol 45-50 part, fire retardant 3-4 part, whipping agent 3-4 part.
The sponge that the embodiment of the present invention provides, good permeability, because having the reticulated structure of 100% perforate, makes it have good ventilation property, water-permeable, and its comfort level and supporting force splendid, solve the problem of the airtight and supporting force of common traditional cotton.
Preferably, polymerizing catalyst be in stannous octoate and triethylene diamine one or both.
Wherein, polyether glycol, tolylene diisocyanate and vulcabond are major ingredient, stannous octoate or triethylene diamine as catalyzer, effectively carrying out of catalytic polymerization.
Preferably, described fire retardant is one or more in poly-hydroxy reactive flame retardant, methyl-phosphoric acid dimethyl ester and halogen-free flame retardants, this several fire retardant all belongs to environment friendly flame retardant, increases the anti-flaming function of sponge by adding fire retardant, improves operational safety coefficient.In addition, different colorants can also be added according to demand.
The embodiment of the present invention additionally provides the preparation method of a kind of sponge, as shown in Figure 1, comprises the steps:
(A) in mass fraction, by tolylene diisocyanate, after water 2.5-3 part and whipping agent 1-2 part carry out mixed foaming, polyurethane sponge is obtained;
(B) vulcabond, remaining water, stannous octoate, polyether glycol and fire retardant mixing and stirring are obtained the first mixture;
(C) described polyurethane sponge is fixed on the top of mould, described first mixture to be put in mould and after forming newborn silk floss with remaining whipping agent mixed foaming, after described newborn cotton and described polyurethane sponge polymerization reaction take place are bonded, obtain product through overmolding, cooling and cutting step.
The preparation method of the sponge that the embodiment of the present invention provides, by in a mold, make polyurethane sponge and breast cotton bonded to each other while polymerization reaction take place, glue need not be used, and polyurethane sponge is after holes, not only strengthen cotton elasticity, its random uniform reticulated structure, and 100% perforate, make it have good ventilation property, water-permeable, breast cotton is synthesized by high molecular polyether, there is good comfort level and supporting force, be not easy weathering, polyurethane sponge (is also expressed one's gratification dry cotton, washing is cotton, Open cell) combine with breast cotton, solve the problem of the airtight and supporting force of common traditional cotton, also solve the harm using glue to bring to human body simultaneously.
Preferably, in described step (A), the density of the described polyurethane sponge obtained is 18-20kg/m
3, because carrying out in making processes, breast is cotton to be needed and the sufficient reactive infiltration of polyurethane sponge, and therefore polyurethane sponge is more loose, when orifice throat ratio is larger, is so more conducive to the carrying out reacted.
Preferably, in described step (B), the time of mix and blend is 20-30min, and temperature is 25-50 DEG C, and relative humidity is greater than 35%, and because raw material used is organism, therefore temperature should not be too high, occurs to prevent potential safety hazard.
Preferably, in described step (B), the speed of mix and blend is 100-200rad/min, by stirring, raw material is mixed fully.
Preferably, in described step (C), when the temperature of polymerization reaction take place rises to 70-130 DEG C, water-soluble silicon oil is added in a mold;
Preferably, described water-soluble silicon oil is the 1-1.5% of described raw material quality per-cent, and the water-soluble silicon oil added belongs to tensio-active agent, can play the object of further activated polymerization reaction.
Preferably, in described step (C), carry out the time controling of stirring polymerization reaction take place at 2-3min, the general relatively more violent and heat release of polyreaction, therefore general 2-3min can complete, if the long mould that makes of polymerization reaction time is in the condition of high temperature always, quality and the stability of mould can be affected.
Compared with prior art, beneficial effect of the present invention is:
(1) sponge that the embodiment of the present invention provides is composite two layer structure, polyurethane sponge and breast cotton, direct reaction can tightly be bonded together, and eliminates the time that in production process in the past, required glue spraying operation and glue parch, save the operating time, simplify the operation operation;
(2) polyurethane sponge is after holes, strengthens cotton elasticity; Reticulated structure 100% perforate, makes it have good ventilation property, water-permeable;
(3) newborn cotton has good comfort level and supporting force, can not the long and weathering because the time, and polyurethane sponge combines with breast cotton, solves the problem of the airtight and supporting force of common traditional cotton.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below.
Fig. 1 is the preparation flow figure of the preparation method of the sponge of the embodiment of the present invention.
Embodiment
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but it will be understood to those of skill in the art that the following example only for illustration of the present invention, and should not be considered as limiting the scope of the invention.Unreceipted actual conditions person in embodiment, the condition of conveniently conditioned disjunction manufacturers suggestion is carried out.Agents useful for same or the unreceipted production firm person of instrument, be and can buy by commercially available the conventional products obtained.
Embodiment 1
The preparation method of sponge is as follows:
(A) in mass fraction, by tolylene diisocyanate 45 parts, after 2.5 parts, water and whipping agent 1 part carry out mixed foaming, polyurethane sponge is obtained;
(B) vulcabond 25 parts, 1.5 parts, water, polymerizing catalyst 1 part, polyether glycol 45 parts and fire retardant 3 parts of mixing and stirring are obtained the first mixture;
(C) polyurethane sponge is fixed on the top of mould, the first mixture to be put in mould and after forming newborn silk floss with whipping agent 2 parts of mixed foamings, make breast cotton with polyurethane sponge polymerization reaction take place after, obtain product through overmolding, cooling and cutting step.
Embodiment 2
The preparation method of sponge is as follows:
(A) in mass fraction, by the tolylene diisocyanate in starting material 60 parts, obtain polyurethane sponge after 3 parts, water and whipping agent 2 parts carry out mixed foaming, the density of the polyurethane sponge obtained is 18kg/m
3;
(B) be 25 DEG C by the vulcabond in starting material 35 parts, 3 parts, water, stannous octoate 2 parts, polyether glycol 60 parts and poly-hydroxy reactive flame retardant 4 parts in temperature, under relative humidity is greater than the condition of 35%, obtain the first mixture after mix and blend 2min, the speed of stirring is 200rad/min;
(C) polyurethane sponge is fixed on the top of mould, first mixture to be put in mould and after forming newborn silk floss with whipping agent 2 parts of mixed foamings, make breast cotton and polyurethane sponge polymerization reaction take place 2-3min, when the temperature of polyreaction rises to 70 DEG C, be incorporated as the water-soluble silicon oil of 1% of raw material quality per-cent in a mold, then obtain product through overmolding, cooling and cutting step.
Embodiment 3
The preparation method of sponge is as follows:
(A) in mass fraction, by the tolylene diisocyanate in starting material 50 parts, obtain polyurethane sponge after 3 parts, water and whipping agent 1 part carry out mixed foaming, the density of the polyurethane sponge obtained is 20kg/m
3;
(B) be 50 DEG C by 3.5 parts, the mixture of the vulcabond in starting material 30 parts, 2 parts, water, triethylene diamine 1.5 parts, polyether glycol 50 parts and poly-hydroxy reactive flame retardant and halogen-free flame retardants in temperature, under relative humidity is greater than the condition of 35%, obtain the first mixture after mix and blend 3min, the speed of stirring is 100rad/min;
(C) polyurethane sponge is fixed on the top of mould, first mixture to be put in mould and after forming newborn silk floss with whipping agent 2 parts of mixed foamings, make breast cotton and polyurethane sponge polymerization reaction take place 2-3min, when the temperature of polyreaction rises to 130 DEG C, be incorporated as the water-soluble silicon oil of 1.5% of raw material quality per-cent in a mold, then obtain product through overmolding, cooling and cutting step.
Embodiment 4
The preparation method of sponge is as follows:
(A) in mass fraction, by the tolylene diisocyanate in starting material 45 parts, obtain polyurethane sponge after 3 parts, water and whipping agent 1 part carry out mixed foaming, the density of the polyurethane sponge obtained is 18kg/m
3;
(B) be 25 DEG C by 2 parts, the mixture of the vulcabond in starting material 35 parts, 2 parts, water, stannous octoate and triethylene diamine, polyether glycol 55 parts, whipping agent 3 parts and methyl-phosphoric acid dimethyl ester 3 parts in temperature, under relative humidity is greater than the condition of 35%, obtain the first mixture after mix and blend 2min, the speed of stirring is 150rad/min;
(C) polyurethane sponge is fixed on the top of mould, first mixture to be put in mould and after forming newborn silk floss with whipping agent 2 parts of mixed foamings, make breast cotton and polyurethane sponge polymerization reaction take place 2-3min, when the temperature of polyreaction rises to 100 DEG C, be incorporated as the water-soluble silicon oil of 1.5% of raw material quality per-cent in a mold, then obtain product through overmolding, cooling and cutting step.
Embodiment 5
The preparation method of sponge is as follows:
(A) in mass fraction, by the tolylene diisocyanate in starting material 60 parts, obtain polyurethane sponge after 2.5 parts, water and whipping agent 1 part carry out mixed foaming, the density of the polyurethane sponge obtained is 18kg/m
3;
(B) be 40 DEG C by the vulcabond in starting material 35 parts, 2.5 parts, water, stannous octoate 2 parts, polyether glycol 55 parts and poly-hydroxy reactive flame retardant 4 parts in temperature, under relative humidity is greater than the condition of 35%, obtain the first mixture after mix and blend 2min, the speed of stirring is 200rad/min;
(C) polyurethane sponge is fixed on the top of mould, first mixture to be put in mould and after forming newborn silk floss with whipping agent 2 parts of mixed foamings, make breast cotton and polyurethane sponge polymerization reaction take place 2-3min, when the temperature of polymerization reaction take place rises to 120 DEG C, be incorporated as the water-soluble silicon oil of 1% of raw material quality per-cent in a mold, then obtain product through overmolding, cooling and cutting step.
Embodiment 6
The preparation method of sponge is as follows:
(A) in mass fraction, by the tolylene diisocyanate in starting material 50 parts, obtain polyurethane sponge after 2.5 parts, water and whipping agent 2 parts carry out mixed foaming, the density of the polyurethane sponge obtained is 20kg/m
3;
(B) be 45 DEG C by 4 parts, the mixture of the vulcabond in starting material 30 parts, 2.5 parts, water, stannous octoate 2 parts, polyether glycol 55 parts and methyl-phosphoric acid dimethyl ester and halogen-free flame retardants in temperature, under relative humidity is greater than the condition of 35%, obtain breast after mix and blend 1min cotton, the speed of stirring is 150rad/min;
(C) polyurethane sponge is fixed on the top of mould, first mixture to be put in mould and after forming newborn silk floss with whipping agent 2 parts of mixed foamings, make breast cotton and polyurethane sponge polymerization reaction take place 2-3min, when the temperature of polymerization reaction take place rises to 130 DEG C, be incorporated as the water-soluble silicon oil of 1.5% of raw material quality per-cent in a mold, then obtain product through overmolding, cooling and cutting step.
Embodiment 7
The preparation method of sponge is as follows:
(A) in mass fraction, by the tolylene diisocyanate in starting material 55 parts, obtain polyurethane sponge after 2.5 parts, water and whipping agent 1 part carry out mixed foaming, the density of the polyurethane sponge obtained is 19kg/m
3;
(B) be 40 DEG C by the vulcabond in starting material 35 parts, 2 parts, water, triethylene diamine 2 parts, polyether glycol 55 parts and poly-hydroxy reactive flame retardant 4 parts in temperature, under relative humidity is greater than the condition of 35%, obtain the first mixture after mix and blend 1min, the speed of stirring is 200rad/min;
(C) polyurethane sponge is fixed on the top of mould, first mixture to be put in mould and after forming newborn silk floss with whipping agent 2 parts of mixed foamings, make breast cotton and polyurethane sponge polymerization reaction take place 2-3min, when the temperature of polyreaction rises to 125 DEG C, be incorporated as the water-soluble silicon oil of 1.5% of raw material quality per-cent in a mold, then obtain product through overmolding, cooling and cutting step.
Embodiment 8
The preparation method of sponge is as follows:
(A) in mass fraction, by the tolylene diisocyanate in starting material 50 parts, obtain polyurethane sponge after 3 parts, water and whipping agent 1 part carry out mixed foaming, the density of the polyurethane sponge obtained is 18kg/m
3;
(B) be 25 DEG C by the vulcabond in starting material 35 parts, 3 parts, water, stannous octoate 2 parts, polyether glycol 55 parts and halogen-free flame retardants 4 parts in temperature, under relative humidity is greater than the condition of 35%, obtain the first mixture after mix and blend 2min, the speed of stirring is 200rad/min;
(C) polyurethane sponge is fixed on the top of mould, first mixture to be put in mould and after forming newborn silk floss with whipping agent 2 parts of mixed foamings, and carry out stirring and make breast cotton with polyurethane sponge polymerization reaction take place 2-3min, when the temperature carrying out stirring polymerization reaction take place rises to 90 DEG C, be incorporated as the water-soluble silicon oil of 1.5% of raw material quality per-cent in a mold, then obtain product through overmolding, cooling and cutting step.
Embodiment 9
The preparation method of sponge is as follows:
(A) in mass fraction, by the tolylene diisocyanate in starting material 45 parts, obtain polyurethane sponge after 3 parts, water and whipping agent 2 parts carry out mixed foaming, the density of the polyurethane sponge obtained is 18kg/m
3;
(B) be 25 DEG C by the vulcabond in starting material 35 parts, 2 parts, water, stannous octoate 2 parts, polyether glycol 55 parts and halogen-free flame retardants 4 parts in temperature, under relative humidity is greater than the condition of 35%, obtain the first mixture after mix and blend 2min, the speed of stirring is 200rad/min;
(C) polyurethane sponge is fixed on the top of mould, first mixture to be put in mould and after forming newborn silk floss with whipping agent 2 parts of mixed foamings, make breast cotton and polyurethane sponge polymerization reaction take place 2-3min, when the temperature of polyreaction rises to 125 DEG C, be incorporated as the water-soluble silicon oil of 1.5% of raw material quality per-cent in a mold, then obtain product through overmolding, cooling and cutting step.
Experimental example 1
It is as shown in table 1 below that contrast is carried out in the aperture of the sponge products that the sponge of embodiment of the present invention 1-4 and commercially available mattress use, and density is all at 18-20kg/m
3:
Table 1 comparing result
| Pore size | |
| Commercially available prod | 0.01-0.02mm |
| Embodiment 1 | 0.1-0.2mm |
| Embodiment 2 | 0.1-0.2mm |
| Embodiment 3 | 0.1-0.2mm |
| Embodiment 4 | 0.1-0.2mm |
From upper table 1 data: in the same circumstances, large compared with the aperture of commercially available prod more than 10 times of the product of embodiment of the present invention 1-4, therefore its ventilative water permeability also will effective compared with the sponge of conventional mattress on market.
Although illustrate and describe the present invention with specific embodiment, however it will be appreciated that can to make when not deviating from the spirit and scope of the present invention many other change and amendment.Therefore, this means to comprise all such changes and modifications belonged in the scope of the invention in the following claims.
Claims (10)
1. a sponge, is characterized in that, its starting material comprise following component according to the mass fraction: tolylene diisocyanate 45-60 part, vulcabond 25-35 part, water 4-6 part, polymerizing catalyst 1-2 part, polyether glycol 45-60 part, fire retardant 3-4 part, whipping agent 3-4 part.
2. a kind of sponge according to claim 1, it is characterized in that, its starting material comprise following component according to the mass fraction: tolylene diisocyanate 45-50 part, vulcabond 25-30 part, water 4-5 part, polymerizing catalyst 1-1.5 part, polyether glycol 45-50 part, fire retardant 3-4 part, whipping agent 3-4 part.
3. a kind of sponge according to claim 1, is characterized in that, described fire retardant is one or more in poly-hydroxy reactive flame retardant, methyl-phosphoric acid dimethyl ester and halogen-free flame retardants.
4. a kind of sponge according to claim 1, is characterized in that, described polymerizing catalyst be in stannous octoate and triethylene diamine one or both.
5. the preparation method of a kind of sponge described in any one of claim 1-4, is characterized in that, comprise the steps:
(A) in mass fraction, by tolylene diisocyanate, after water 2.5-3 part and whipping agent 1-2 part carry out mixed foaming, polyurethane sponge is obtained;
(B) vulcabond, remaining water, stannous octoate, polyether glycol and fire retardant mixing and stirring are obtained the first mixture;
(C) described polyurethane sponge is fixed on the top of mould, described first mixture to be put in mould and after forming newborn silk floss with remaining whipping agent mixed foaming, after the bottom polymerization reaction take place of described newborn cotton and described polyurethane sponge is bonded, obtain product through overmolding, cooling and cutting step.
6. the preparation method of a kind of sponge according to claim 5, is characterized in that, in described step (A), the density of the described polyurethane sponge obtained is 18-20kg/m
3.
7. the preparation method of a kind of sponge according to claim 5, is characterized in that, in described step (B), the time of mix and blend is 2-3min, and temperature is 25-50 DEG C, and relative humidity is greater than 35%.
8. the preparation method of a kind of sponge according to claim 5, is characterized in that, in described step (B), the speed of mix and blend is 100-200rad/min.
9. the preparation method of a kind of sponge according to claim 5, is characterized in that, in described step (C), when the temperature of polymerization reaction take place rises to 70-130 DEG C, adds water-soluble silicon oil in a mold;
Preferably, described water-soluble silicon oil is the 1-1.5% of described raw material quality per-cent.
10. the preparation method of a kind of sponge according to claim 5, is characterized in that, in described step (C), the time controling of polymerization reaction take place is at 2-3min.
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|---|---|---|---|
| CN201410719918.1A CN104356352A (en) | 2014-12-02 | 2014-12-02 | Sponge and preparation method thereof |
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|---|---|---|---|
| CN201410719918.1A CN104356352A (en) | 2014-12-02 | 2014-12-02 | Sponge and preparation method thereof |
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| CN108440947A (en) * | 2018-03-26 | 2018-08-24 | 东莞市佳龙寝具有限公司 | A kind of softness strong elasticity sponge and preparation method thereof |
| CN108484876A (en) * | 2018-03-29 | 2018-09-04 | 东莞市佳龙寝具有限公司 | A kind of inflaming retarding sponge and preparation method thereof |
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| CN106008915A (en) * | 2016-07-01 | 2016-10-12 | 浙江圣诺盟顾家海绵有限公司 | Photocatalyst nanometer titanium oxide antimicrobial sponge and production technology thereof |
| CN106983314A (en) * | 2016-10-26 | 2017-07-28 | 英属维京群岛劲泰科技有限公司 | Compile cane sofa |
| CN106750100A (en) * | 2017-02-08 | 2017-05-31 | 皮维友 | A kind of corrosion-resistant elastic sponge |
| CN106832888A (en) * | 2017-02-08 | 2017-06-13 | 皮维友 | A kind of corrosion-resistant elastic sponge |
| CN107513266A (en) * | 2017-08-31 | 2017-12-26 | 苏州市苏真床垫有限公司 | A kind of preparation method of mountain palm fibre foaming mattress |
| CN107603255A (en) * | 2017-08-31 | 2018-01-19 | 苏州市苏真床垫有限公司 | A kind of preparation method of monkey grass foam pad mattress |
| CN108359071A (en) * | 2018-02-09 | 2018-08-03 | 杨彪 | A kind of germanic underwear chest pad and preparation method thereof |
| CN108378434A (en) * | 2018-02-09 | 2018-08-10 | 杨彪 | A kind of underwear chest pad production method containing anion |
| CN108440947A (en) * | 2018-03-26 | 2018-08-24 | 东莞市佳龙寝具有限公司 | A kind of softness strong elasticity sponge and preparation method thereof |
| CN108484876A (en) * | 2018-03-29 | 2018-09-04 | 东莞市佳龙寝具有限公司 | A kind of inflaming retarding sponge and preparation method thereof |
| CN110423325A (en) * | 2019-07-25 | 2019-11-08 | 惠州华盛家庭用品有限公司 | The permeable cotton of silk, preparation process and its application |
| CN113773471A (en) * | 2021-09-17 | 2021-12-10 | 湖州高裕家居科技有限公司 | Multilayer polyurethane composite pillow and preparation method thereof |
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