CN102775579A - Preparation method of polyurethane foam with water sealing performance - Google Patents
Preparation method of polyurethane foam with water sealing performance Download PDFInfo
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- CN102775579A CN102775579A CN2011101244705A CN201110124470A CN102775579A CN 102775579 A CN102775579 A CN 102775579A CN 2011101244705 A CN2011101244705 A CN 2011101244705A CN 201110124470 A CN201110124470 A CN 201110124470A CN 102775579 A CN102775579 A CN 102775579A
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- polyurethane foam
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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- Polyurethanes Or Polyureas (AREA)
Abstract
The invention relates to a preparation method of polyurethane foam with a water sealing performance. The method employs mixed polyols as component A, which is composed of: polyols, a color paste, an organosilicon foam stabilizer, a catalyst, a tackifier, an antiager and other additives. Water is adopted as a foaming agent, and a waterproofing agent is added. The method adopts MDI as an isocyanate component B, which has 4, 4'-diphenylmethane diisocyanate as the main component. The component A and the component B are respectively metered and mixed at a high speed. Then the mixture is subjected to pouring, reaction, foaming, as well as curing molding, thus obtaining the sealing foam.
Description
Technical field
The present invention relates to organic sealing material technical field, more particularly relate to one and can be used for outdoor sealing foam with water proof and dust proof performance.
Technical background
The foam seal material owing to have the good compression rebound performance, is a kind of important industrial sealing material.With the urethane foam-in-place, casting on the parts of needs sealing, becoming has the foam seal of specified shape circle, and this foam seal circle has the good compression rebound performance.This polyurethane foam sealing material because the existence of restorer has excellent waterproof, anti-dust performance, is very suitable for the sealing of parts such as outdoor door and window under compressed state.It is simple that this urethane sealing foamy moulding process has processing, applying flexible, and characteristics such as the scope of application is wide are one type of sealing foams that the applications well prospect is arranged.
Summary of the invention
The objective of the invention is on the basis based on the conventional polyurethanes flexible foam, through the adjustment that raw material is formed, prepared a kind of water resistance good can outdoor use urethane sealing foam.
Content of the present invention is a kind of polyurethane foam raw material of two components: A component and B component, and the A component is a polyol component, the B component is an isocyanate component.After using the polyurethane foam cast equipment that A component and B component are measured respectively, mixed at high speed is poured into the position that needs sealing, becomes the sealing foam after reacting the foamed solidification moulding.Mixed A, B component have good thixotropic property, can be at non-horizontal position foaming.
A component of the present invention comprises: polyol blends, and mill base, the silicon foams stablizer, catalyzer, tackifier, auxiliary agents such as fire retardant and anti-aging agent adopt water as whipping agent, add water-resisting agent.The B component is a polymeric MDI, or modification MDI, or their mixture.Staple is 4, the 4`-diphenylmethanediisocyanate.
Described polyol blends is the mixture of two types of polyvalent alcohols, and consumption is 80%～95% (weight is 100 in the A component).These two types of highly active polyether glycols of polyvalent alcohol first HMW, or the mixture of this type of polyvalent alcohol, hydroxyl value are between 10-60, and consumption is 95%～99% (weight is 100 in polyol blend, down together); It two is small molecules polyvalent alcohols, or the mixture of this micromolecular polyvalent alcohol, and terepthaloyl moietie or butyleneglycol, consumption are 1～5%.
Described water-resisting agent is polyethylene powders or polytetrafluorethylepowder powder, and fineness is less than 200 orders, consumption 1%～5% (weight is 100 in the A component); Catalyzer is trimethylamine class or organic tin catalysts for polyurethanes; Tackifier are silicon-dioxide; Fire retardant is trichloroethyl phosphate TCPP; Lime carbonate is used in mineral filler, silicon powder, and white lake etc. are used to increase the viscosity of component, and can reduce the cost of raw material.The urethane sealing foamy density of preparation does, between 0.2～0.8g/cm
3Between.Water-intake rate is less than 30%.
The water-intake rate test.To seal the foam batten and be soaked in 25 ℃ of water of normal temperature, measure the percentage that its weight increases after 24 hours.
Embodiment
Below in conjunction with content of the present invention 4 specific embodiments are provided, the related combination polyvalent alcohol employed raw material of filling a prescription:
(1) with glycerine be initiator polyether polyol with high activity, molecule hydroxyl value 3, hydroxyl value 40.
(2) with terepthaloyl moietie be the polyether polyol with high activity of initiator, molecule hydroxyl value 2, hydroxyl value 28.
(3) terepthaloyl moietie
(4) 1.4 butyleneglycols
(5) water
(6) black slurry
(7) pentamethyl-diethylenetriamine
(8) antioxidant 1010
(9) silicone oil suds-stabilizing agent
(10) polyethylene powders 500 orders
(11) polytetrafluorethylepowder powder 800 orders
(12) silicon-dioxide
(13)TCPP
(14) lime carbonate 400 orders
(15) many phenylmethanes POLYMETHYLENE POLYPHENYLISOCYANATE MDI 44V20
(16) carbodiimide modification MDI
Process the combination polyvalent alcohol with above-mentioned raw materials according to the form below 1 proportioning.Control raw material constant temperature at 25 ℃, after isocyanic ester 44V20 short mix, pouring foaming.
Table 1
| Component (weight) | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 5 |
| (1) | 99 | 95 | 75 | 60 | 60 |
| (2) | 0 | 0 | 22 | 36 | 36 |
| (3) | 1 | 5 | 2 | / | / |
| (4) | / | / | 3 | 4 | 4 |
| (5) | 0.2 | 1.4 | 1.2 | 1.4 | 1.4 |
| (6) | 2 | 2 | 10 | 10 | 10 |
| (7) | 0.6 | 0.7 | 0.4 | 0.5 | 0.5 |
| (8) | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
| (9) | 1.0 | 1.5 | 1.0 | 2.0 | 2.0 |
| (10) | 1 | 5 | / | / | / |
| (11) | / | / | 3 | 5 | / |
| (12) | 1.5 | 2.5 | 1.0 | 2.0 | 2.0 |
| (13) | 3 | 5 | 10 | 10 | 10 |
| (14) | 0 | 5 | 5 | 10 | 10 |
| (15) | 30 | 15 | 0 | 20 | 20 |
| (16) | 0 | 10 | 40 | 20 | 20 |
Embodiment 1
By the prescription of last table embodiment 1, configuration A component and B component.Take reaction and injection molding process, cast equipment uses the low-pressure casting machine, waters fluence 5 Grams Per Seconds.Hybrid reaction A and B component make grey urethane sealing foam strip, foam density 0.8g/cm
3The foam water-intake rate is 20%.
Embodiment 2
By the prescription of last table embodiment 2, configuration A component and B component.Take reaction and injection molding process, cast equipment uses the low-pressure casting machine, waters fluence 2.5 Grams Per Seconds.Hybrid reaction A and B component make grey urethane sealing foam strip, foam density 0.2g/cm
3The foam water-intake rate is 25%.
Embodiment 3
By the prescription of last table embodiment 3, configuration A component and B component.Take reaction and injection molding process, cast equipment uses the low-pressure casting machine, waters fluence 3 Grams Per Seconds.Hybrid reaction A and B component make black polyurethane sealing foam strip, foam density 0.25g/cm
3The foam water-intake rate is 22%.
Embodiment 4
By the prescription of last table embodiment 4, configuration A component and B component.Take reaction and injection molding process, cast equipment uses the low-pressure casting machine, waters fluence 3 Grams Per Seconds.Hybrid reaction A and B component make black polyurethane sealing foam strip, foam density 0.2g/cm
3The foam water-intake rate is 25%.
Comparative Examples 5
By the prescription of last table embodiment 5, configuration A component and B component.Take reaction and injection molding process, cast equipment uses the low-pressure casting machine, waters fluence 3 Grams Per Seconds.Hybrid reaction A and B component make black polyurethane sealing foam strip, foam density 0.2g/cm
3The foam water-intake rate is 80%.
Claims (9)
1. the present invention relates to a kind of preparation method with water sealing property polyurethane foam.It is characterized in that this is the composition of a kind of A, B two components: the A component comprises polyol blends, mill base, and the silicon foams stablizer, catalyzer, tackifier, fire retardant, auxiliary agents such as filler and anti-aging agent adopt water as whipping agent, add water-resisting agent.Adopting MDI is isocyanic ester B component, and staple is 4, the 4`-diphenylmethanediisocyanate.After A component and B component measured respectively, mixed at high speed, cast reaction foaming becomes the sealing foam behind the curing molding.
2. according to the described polyurethane foam of claim 1, it is characterized in that: the polyol blends of described A component is the mixture of two types of polyvalent alcohols, and consumption is 80%～95% (weight is 100 in the A component).Two types of highly active polyether glycols of polyvalent alcohol first HMW, or the mixture of this type of polyether glycol, hydroxyl value are between 10-60, and consumption is 95%～99% (weight is 100 in polyol blend, down together); It two is small molecules polyvalent alcohols, or the mixture of this micromolecular polyvalent alcohol, and terepthaloyl moietie or butyleneglycol, consumption are 1～5%.
3. according to the described polyurethane foam of claim 1, it is characterized in that: described water-resisting agent is polyethylene powders or polytetrafluorethylepowder powder, and fineness is less than 200 orders, consumption 1%～5% (weight is 100 in the A component, down with).
4. according to the described polyurethane foam of claim 1, it is characterized in that: described catalyzer is trimethylamine class or organic tin catalysts for polyurethanes.
5. according to the described polyurethane foam of claim 1, it is characterized in that: described filler is mineral filler, lime carbonate, silicon powder etc.; Described tackifier are silicon-dioxide.
6. according to the described polyurethane foam of claim 1, it is characterized in that: described B component MDI is a polymeric MDI, or modification MDI, or their mixture.
7. according to the described polyurethane foam of claim 1, it is characterized in that: described urethane sealing foamy density, between 0.2～0.8g/cm
3Between.
8. according to the described polyurethane foam of claim 1, it is characterized in that: mixed A, B component have good thixotropic property, can be at non-horizontal position foaming.
9. according to the described polyurethane foam of claim 1; It is characterized in that: after described preparation method is to use the polyurethane foam casting molding machine that A component and B component are measured respectively; Mixed at high speed is poured into the position that needs sealing, becomes the sealing foam after the moulding of reaction foamed solidification.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110124470.5A CN102775579B (en) | 2011-05-13 | 2011-05-13 | Preparation method of polyurethane foam with water sealing performance |
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| CN201110124470.5A CN102775579B (en) | 2011-05-13 | 2011-05-13 | Preparation method of polyurethane foam with water sealing performance |
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| CN102775579A true CN102775579A (en) | 2012-11-14 |
| CN102775579B CN102775579B (en) | 2014-06-11 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103709359A (en) * | 2013-12-25 | 2014-04-09 | 杭州顺隆胶辊有限公司 | Improving method of water resistance of polyurethane material |
| CN104448233A (en) * | 2013-09-12 | 2015-03-25 | 嘉兴禾欣化学工业有限公司 | High weatherability solvent-free type polyurethane resin for synthetic leather intermediate layer |
| CN104479096A (en) * | 2014-11-19 | 2015-04-01 | 苏州新区佳合塑胶有限公司 | Plastic formula of automobile mattress |
| CN104497552A (en) * | 2014-12-11 | 2015-04-08 | 泉州泉港华博化工科技有限公司 | Waterborne polyurethane high-resilience plastic foam for automobile seats and preparation process thereof |
| CN105745243A (en) * | 2013-11-08 | 2016-07-06 | 巴斯夫欧洲公司 | Polyurethane sealant |
| CN109021208A (en) * | 2018-06-04 | 2018-12-18 | 江门市多普达实业有限公司 | A kind of newborn sponge of parent and its production technology |
| CN110467710A (en) * | 2019-08-20 | 2019-11-19 | 浙江坤月新材料有限公司 | A kind of melamine polyol combination material for manufacturing well antiseep sleeve |
| CN111040609A (en) * | 2019-11-29 | 2020-04-21 | 中国科学院宁波材料技术与工程研究所 | Coating material for automobile coating film and preparation method thereof |
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2011
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104448233A (en) * | 2013-09-12 | 2015-03-25 | 嘉兴禾欣化学工业有限公司 | High weatherability solvent-free type polyurethane resin for synthetic leather intermediate layer |
| CN105745243A (en) * | 2013-11-08 | 2016-07-06 | 巴斯夫欧洲公司 | Polyurethane sealant |
| CN103709359A (en) * | 2013-12-25 | 2014-04-09 | 杭州顺隆胶辊有限公司 | Improving method of water resistance of polyurethane material |
| CN104479096A (en) * | 2014-11-19 | 2015-04-01 | 苏州新区佳合塑胶有限公司 | Plastic formula of automobile mattress |
| CN104497552A (en) * | 2014-12-11 | 2015-04-08 | 泉州泉港华博化工科技有限公司 | Waterborne polyurethane high-resilience plastic foam for automobile seats and preparation process thereof |
| CN109021208A (en) * | 2018-06-04 | 2018-12-18 | 江门市多普达实业有限公司 | A kind of newborn sponge of parent and its production technology |
| CN110467710A (en) * | 2019-08-20 | 2019-11-19 | 浙江坤月新材料有限公司 | A kind of melamine polyol combination material for manufacturing well antiseep sleeve |
| CN111040609A (en) * | 2019-11-29 | 2020-04-21 | 中国科学院宁波材料技术与工程研究所 | Coating material for automobile coating film and preparation method thereof |
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| CN102775579B (en) | 2014-06-11 |
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Effective date of registration: 20230714 Address after: No. 100, Yihe Road, Zhimadun Street, Linyi Economic Development Zone, Shandong 276023 Patentee after: Haohai New Materials (Shandong) Co.,Ltd. Address before: No. 208 Haohai Road, Xinbang Industrial Park, Songjiang District, Shanghai, May 2016 Patentee before: Shanghai Haohai Chemical Co.,Ltd. |
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