CN104059244A - Production process of high-crystal molecule slow-rebound polyurethane - Google Patents
Production process of high-crystal molecule slow-rebound polyurethane Download PDFInfo
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- CN104059244A CN104059244A CN201310093756.0A CN201310093756A CN104059244A CN 104059244 A CN104059244 A CN 104059244A CN 201310093756 A CN201310093756 A CN 201310093756A CN 104059244 A CN104059244 A CN 104059244A
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Abstract
The invention relates to the technical field of polymer materials, and particularly relates to a production process of polyurethane foam. The production process of high-crystal molecule slow-rebound polyurethane comprises the following steps: 1) storing raw materials, controlling the temperature; 2) conveying the raw materials to a mixing chamber of an assembly line foaming machine, performing low-speed stirring, continuously injecting certain amount of air during the stirring process; 3) conveying the stirred materials to a foaming chamber, performing foaming; 4) conveying the foamed materials to a curing chamber, performing natural curing; 5) conveying the cured polyurethane foam to a treatment platform, and performing post-treatment to obtain the finished product. With the above technical scheme, the slow-rebound polyurethane prepared in the invention is large and uniform in foam pores, has filtration effect after subsequent foam treatment, can be produced continuously by a routine assembly line foaming machine, can increase the production efficiency and reduce the cost, and has more obvious volume advantages when compared with products prepared by conventional processes.
Description
Technical field
The present invention relates to technical field of polymer materials, be specifically related to a kind of production technique of polyurethane foam.
Background technology
Common slow-recovery sponge has certain closure in the market, the bore size of its abscess is less, cause carrying out after follow-up whole bubble is processed still cannot there is certain filter effect, ventilation property is not good, and because the little reason of abscess-size causes residual a certain amount of moisture in the cavernous body after washing, cavernous body cannot be dried at short notice.Conventionally adopt batch production mode to produce high brilliant molecule slow rebound polyurethane and solve the little and not good problem of ventilation property of bore size, the abscess of the polyurethane foam of producing thus has the features such as be evenly distributed and bore size is large, after follow-up whole bubble film-removing technology, it has good permeability to make finished product sponge, and air penetrability reaches more than 90%.But be limited to equipment and process, traditional way can only be produced 1m at every turn
3product, seriously hindered the use of this type of sponge and promoted.
Summary of the invention
The object of the invention is to, a kind of high brilliant molecule slow rebound polyurethane production technique is provided, solve above technical problem.
Technical problem solved by the invention can realize by the following technical solutions:
High brilliant molecule slow rebound polyurethane production technique, comprises feed, batch mixing, foaming, slaking, cutting, whole bubble process, it is characterized in that, described feeder process adopts following feed composition: polyether glycol, isocyanic ester, all infusion, catalyzer, chemical foaming agent, other auxiliary agents;
Comprise following processing step:
1) described feed composition is deposited in respectively in corresponding raw material storage tank, wherein in the storage tank of polyether glycol and isocyanic ester, be furnished with temperature controlling system, both temperature are controlled between 15 ℃-25 ℃, allowable temperature fluctuation range is less than 1 ℃;
2) described feed composition is sent into respectively in proportion by volume pump in the mixing section of streamline foaming machine and carried out stirring at low speed, wherein temperature is controlled at 20 ± 5 ° of C during the conveying of polyether glycol and isocyanic ester, injects continuously quantitative air in whipping process;
3), after material stirring being completed is transferred on the conveying belt in foaming chamber by conveying pipe, continue to carry out the foaming process of certain hour;
4) mass transport to the curing chamber after foaming is completed carries out the slaking of open type nature;
5) urethane foam after slaking is completed is transported to processing platform and carries out cutting process, then adopts blasting method to carry out obtaining finished product after whole bubble membrane removal.
Described feed composition is counted by weight: 100 parts of the polyether glycols of take are measurement basis, 30 parts-65 parts of isocyanic ester, all 0.5 part-2 parts of infusions, 0.05 part-1 part of catalyzer, 1 part-3.5 parts of chemical foaming agents, 0.5 part-10 parts of other auxiliary agents.
Described polyether glycol comprises Mn3000, Mn750 and polymer polyatomic alcohol, and described Mn3000 adopts the polyether glycol that number-average molecular weight is 3000, and described Mn750 adopts the polyether glycol that number-average molecular weight is 750.
Described equal infusion preferably adopts polysiloxane polyether copolymer.
Described catalyzer preferably adopts triethylene diamine, stannous octoate or both mixtures.
Described chemical foaming agent preferably adopts water.
Described other auxiliary agents preferably adopt foam pore-creating agent.
The step 2 of described processing step) stirring at low speed in is set as 500 revs/min-3000 revs/min.
In the present invention, stirring velocity is set to 500 revs/min-3000 revs/min, stirring velocity in common process is 3500 revs/min-6000 revs/min, the compare stirring velocity of common process of stirring at low speed can make foam structure more even, abscess is thicker, make the product after whole bubble membrane removal be easier to breathe freely, reach more obvious filter effect.
The step 2 of described processing step) the injection air capacity in is 0.1 ml/min-300 ml/min.
In the present invention, air Injection amount is set to 0.1 ml/min-300 ml/min, be different from 600 ml/min-1800 ml/min of conventional air Injection amount, this setting range can effectively be controlled abscess cracking situation, prevents that excess air from affecting formed product effect.
The product that utilizes described processing step to prepare has the foam structure being evenly distributed, and abscess-size is large and Stability Analysis of Structures is not easy to crack, has guaranteed the highly air-permeable of product; Meanwhile, the moisture infiltrating wherein is also easier to leach and product is very easily dried, and after efficiently solving existing polyurethane sponge series products and washing, at interiors of products, leaves quantitative residual water-content and the problem that causes product to be difficult for drying.
The foaming time length in the step 3) of described processing step is 1 minute-5 minutes.
Curing time in the step 4) of described processing step is more than 12 hours.
Described temperature controlling system adopts water cycle temperature control system.
Beneficial effect: owing to adopting technique scheme, the slow rebound polyurethane abscess that the present invention prepares is thick and even, carries out after follow-up whole bubble is processed having filteration, makes product not only have highly air-permeable, is also very easily dried; The present invention can use conventional streamline foaming machine to carry out serialization production, has reduced cost when enhancing productivity, and the product traditional technology of comparing has more significantly volume advantage.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
With reference to Fig. 1, high brilliant molecule slow rebound polyurethane production technique, comprise feed, batch mixing, foaming, slaking, cutting, whole bubble process, it is as follows that feeder process is prepared feed composition: Mn750, Mn3000, polymer polyatomic alcohol, isocyanic ester, equal infusion, triethylene diamine, stannous octoate, water, foam pore-creating agent.
High brilliant molecule slow rebound polyurethane production technique comprises the steps:
Step 1, need to raw material be placed on respectively independently in raw material storage tank, wherein the storage vessel of polyether glycol and isocyanic ester is furnished with temperature controlling system, and both temperature are controlled between 15 ℃-25 ℃;
Step 2, is transported to raw material respectively in proportion by volume pump in the mixing section of streamline foaming machine and carries out stirring at low speed, and wherein temperature is controlled at 20 ± 5 ° of C during the conveying of polyether glycol and isocyanic ester, injects continuously quantitative air in whipping process;
Step 3, the material that stirring is completed foams after being transferred on the conveying belt in foaming chamber by conveying pipe;
Step 4, mass transport to the curing chamber after foaming is completed carries out the slaking of open type nature, and maturing process continues more than 12 hours;
Step 5, the urethane foam after slaking is completed is transported to processing platform and carries out the high brilliant molecule sponge of finished product obtaining after cutting process whole bubble membrane removal.
Embodiment mono-: feed composition is 60 parts of Mn750,30 parts of Mn3000,10 parts of polymer polyatomic alcohols, 40 parts of isocyanic ester, 1 part of equal infusion, 0.5 part of triethylene diamine, 0.05 part of stannous octoate, 1.9 parts of water, 5.0 parts of foam pore-creating agents, stirring velocity is 2000 revs/min, air Injection amount is 200 ml/min, and foamed time is 5 minutes.
The abscess of the brilliant molecule sponge of height obtaining by the way is even and thick, and product density is 48kg/m
3, after whole bubble membrane removal, abscess is decontroled completely, makes product have good ventilation property.
Embodiment bis-: feed composition is 55 parts of Mn750,35 parts of Mn3000,10 parts of polymer polyatomic alcohols, 30 parts of isocyanic ester, 1.5 parts of equal infusions, 0.75 part of triethylene diamine, 0.25 part of stannous octoate, 2.5 parts of water, 10 parts of foam pore-creating agents, stirring velocity is 2500 revs/min, air Injection amount is 300 ml/min, and foamed time is 3 minutes
Embodiment tri-: feed composition is 60 parts of Mn750,30 parts of Mn3000,10 parts of polymer polyatomic alcohols, 30 parts of isocyanic ester, 0.5 part of equal infusion, 0.4 part of triethylene diamine, 0.03 part of stannous octoate, 1 part of water, 0.5 part of foam pore-creating agent, stirring velocity is 500 revs/min, air Injection amount is 0.1 ml/min, and foamed time is 3 minutes.
Embodiment tetra-: feed composition is 65 parts of Mn750,25 parts of Mn3000,10 parts of polymer polyatomic alcohols, 65 parts of isocyanic ester, 2 parts of equal infusions, 0.75 part of triethylene diamine, 0.25 part of stannous octoate, 3.5 parts of water, 10 parts of foam pore-creating agents, stirring velocity is 3000 revs/min, air Injection amount is 300 ml/min, and foamed time is 1 minute.
Embodiment five: feed composition is 60 parts of Mn750,30 parts of Mn3000,10 parts of polymer polyatomic alcohols, 40 parts of isocyanic ester, 1 part of equal infusion, 0.35 part of triethylene diamine, 0.25 part of stannous octoate, 2.5 parts of water, 5 parts of foam pore-creating agents, stirring velocity is 1500 revs/min, air Injection amount is 150 ml/min, and foamed time is 3 minutes.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. high brilliant molecule slow rebound polyurethane production technique, comprises feed, batch mixing, foaming, slaking, cutting, whole bubble process, it is characterized in that, described feeder process adopts following feed composition: polyether glycol, isocyanic ester, all infusion, catalyzer, chemical foaming agent, other auxiliary agents;
Comprise following processing step:
1) described feed composition is deposited in respectively in corresponding raw material storage tank, wherein in the storage tank of polyether glycol and isocyanic ester, be furnished with temperature controlling system, both temperature are controlled between 15 ℃-25 ℃;
2) described feed composition is sent into respectively in proportion by volume pump in the mixing section of streamline foaming machine and carried out stirring at low speed, wherein temperature is controlled at 20 ± 5 ° of C during the conveying of polyether glycol and isocyanic ester, injects continuously quantitative air in whipping process;
3), after material stirring being completed is transferred on the conveying belt in foaming chamber by conveying pipe, continue to carry out the foaming process of certain hour;
4) mass transport to the curing chamber after foaming is completed carries out the slaking of open type nature;
5) urethane foam after slaking is completed is transported to processing platform and carries out cutting process, then adopts blasting method to carry out obtaining finished product after whole bubble membrane removal.
2. the brilliant molecule slow rebound polyurethane of height according to claim 1 production technique, it is characterized in that, described feed composition is counted by weight: 100 parts of the polyether glycols of take are measurement basis, 30 parts-65 parts of isocyanic ester, all 0.5 part-2 parts of infusions, 0.05 part-1 part of catalyzer, 1 part-3.5 parts of chemical foaming agents, 0.5 part-10 parts of other auxiliary agents.
3. the brilliant molecule slow rebound polyurethane of height according to claim 2 production technique, it is characterized in that, described polyether glycol comprises Mn3000, Mn750 and polymer polyatomic alcohol, described Mn3000 adopts the polyether glycol that number-average molecular weight is 3000, and described Mn750 adopts the polyether glycol that number-average molecular weight is 750.
4. the brilliant molecule slow rebound polyurethane of height according to claim 2 production technique, is characterized in that, described equal infusion adopts polysiloxane polyether copolymer.
5. the brilliant molecule slow rebound polyurethane of height according to claim 2 production technique, is characterized in that, described catalyzer adopts triethylene diamine, stannous octoate or both mixtures.
6. the brilliant molecule slow rebound polyurethane of height according to claim 2 production technique, is characterized in that, described chemical foaming agent adopts water.
7. according to the brilliant molecule slow rebound polyurethane of the height described in any one in claim 3 to 6 production technique, it is characterized in that, described other auxiliary agents adopt foam pore-creating agent.
8. the brilliant molecule slow rebound polyurethane of height according to claim 1 production technique, is characterized in that the step 2 of described processing step) in stirring at low speed be set as 500 revs/min-3000 revs/min.
9. the brilliant molecule slow rebound polyurethane of height according to claim 1 production technique, is characterized in that the step 2 of described processing step) in injection air capacity be 0.1 ml/min-300 ml/min.
10. the brilliant molecule slow rebound polyurethane of height according to claim 8 or claim 9 production technique, is characterized in that, the foaming time length in the step 3) of described processing step is 1 minute-5 minutes.
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| CN201310093756.0A CN104059244A (en) | 2013-03-22 | 2013-03-22 | Production process of high-crystal molecule slow-rebound polyurethane |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105237724A (en) * | 2015-09-06 | 2016-01-13 | 上海高裕家居科技有限公司 | Breathable MDI system slow-rebound polyurethane material |
| WO2016198433A1 (en) | 2015-06-11 | 2016-12-15 | Covestro Deutschland Ag | Viscoelastic and reticulated polyurethane foam and the preparation thereof |
| CN106432785A (en) * | 2016-10-13 | 2017-02-22 | 张立波 | Antibacterial medical product and production process thereof |
| CN107698728A (en) * | 2017-09-12 | 2018-02-16 | 周志坚 | A kind of slow-recovery sponge and preparation method thereof |
| CN108383966A (en) * | 2018-03-26 | 2018-08-10 | 东莞市佳龙寝具有限公司 | A kind of slow-recovery sponge and preparation method thereof |
| CN111269374A (en) * | 2020-03-11 | 2020-06-12 | 晟玺贸易(上海)有限公司 | Biomass slow-rebound mesh polyurethane sponge and preparation method and application thereof |
| CN111484599A (en) * | 2020-05-19 | 2020-08-04 | 深圳联达新材料科技有限公司 | Washable sponge |
| CN117067491A (en) * | 2023-10-16 | 2023-11-17 | 广州亚伊汽车零部件有限公司 | Slow rebound foaming material and preparation method thereof |
-
2013
- 2013-03-22 CN CN201310093756.0A patent/CN104059244A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016198433A1 (en) | 2015-06-11 | 2016-12-15 | Covestro Deutschland Ag | Viscoelastic and reticulated polyurethane foam and the preparation thereof |
| US10975212B2 (en) | 2015-06-11 | 2021-04-13 | Covestro Deutschland Ag | Viscoelastic and reticulated polyurethane foam and the preparation thereof |
| CN105237724A (en) * | 2015-09-06 | 2016-01-13 | 上海高裕家居科技有限公司 | Breathable MDI system slow-rebound polyurethane material |
| CN105237724B (en) * | 2015-09-06 | 2019-02-19 | 上海高裕家居科技有限公司 | A kind of ventilative MDI system slow rebound polyurethane material |
| CN106432785A (en) * | 2016-10-13 | 2017-02-22 | 张立波 | Antibacterial medical product and production process thereof |
| CN107698728A (en) * | 2017-09-12 | 2018-02-16 | 周志坚 | A kind of slow-recovery sponge and preparation method thereof |
| CN107698728B (en) * | 2017-09-12 | 2022-03-08 | 周志坚 | Slow-resilience sponge and preparation method thereof |
| CN108383966A (en) * | 2018-03-26 | 2018-08-10 | 东莞市佳龙寝具有限公司 | A kind of slow-recovery sponge and preparation method thereof |
| CN111269374A (en) * | 2020-03-11 | 2020-06-12 | 晟玺贸易(上海)有限公司 | Biomass slow-rebound mesh polyurethane sponge and preparation method and application thereof |
| CN111484599A (en) * | 2020-05-19 | 2020-08-04 | 深圳联达新材料科技有限公司 | Washable sponge |
| CN117067491A (en) * | 2023-10-16 | 2023-11-17 | 广州亚伊汽车零部件有限公司 | Slow rebound foaming material and preparation method thereof |
| CN117067491B (en) * | 2023-10-16 | 2024-01-30 | 广州亚伊汽车零部件有限公司 | Slow rebound foaming material and preparation method thereof |
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Effective date of registration: 20160224 Address after: Fengxian District 201411 Shanghai city TAIRI Town Road No. 48 Applicant after: Shanghai Gaoyu Household Technology Co., Ltd. Applicant after: GLORY HOME FURNISHING (JIAXING) CO., LTD. Address before: Fengxian District 201411 Shanghai city TAIRI Town Road No. 48 Applicant before: Shanghai Gaoyu Household Technology Co., Ltd. |
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Application publication date: 20140924 |