CN102775579B - 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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- CN102775579B CN102775579B CN201110124470.5A CN201110124470A CN102775579B CN 102775579 B CN102775579 B CN 102775579B CN 201110124470 A CN201110124470 A CN 201110124470A CN 102775579 B CN102775579 B CN 102775579B
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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 the outdoor sealing foam with water proof and dust proof performance.
Background technology
Foam seal material, owing to having good compression recovery performance, is a kind of important industrial sealing material.By polyurethane on-the-spot foam, in the parts upper moulding of needs sealing, become and have the foam seal of specified shape circle, this foam seal circle has good compression recovery performance.This polyurethane foam sealing material, under compressed state, due to the existence of restorer, has good waterproof and dustproof performance, is very suitable for the sealing of the parts such as outdoor door and window.It is simple that the moulding process of this urethane sealing foam has processing, applying flexible, and the feature such as the scope of application is wide, is the sealing foam that a class has applications well prospect.
Summary of the invention
The object of the invention is on the basis based on conventional polyurethanes flexible foam, the adjustment forming by raw material, 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 A component is polyol component, B component is isocyanate component.After using polyurethane foam cast equipment that A component and B component are measured respectively, high-speed mixing, is poured into the position that needs sealing, after the moulding of reaction foamed solidification, becomes sealing foam.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, silicon foams stablizer, catalyzer, tackifier, the auxiliary agents such as fire retardant and anti-aging agent, adopt water as whipping agent, add water-resisting agent.B component is polymeric MDI, or modification MDI, or their mixture.Main component is 4,4`-diphenylmethanediisocyanate.
Described polyol blends, is the mixture of two class polyvalent alcohols, and consumption is 80%～95%(weight, take A component as 100).The highly active polyether glycol of this two classes polyvalent alcohol first high molecular, or the mixture of this type of polyvalent alcohol, hydroxyl value is between 10-60, consumption is 95%～99%(weight, take polyol blend as 100, lower same); It two is small molecules polyvalent alcohols, or the mixture of this micromolecular polyvalent alcohol, ethylene glycol or butyleneglycol, and consumption is 1～5%.
Described water-resisting agent, is polyethylene powders or polytetrafluorethylepowder powder, and fineness is less than 200 orders, and consumption 1%～5%(weight, take A component as 100); Catalyzer is trimethylamine class or organic tin catalysts for polyurethanes; Tackifier are silicon-dioxide; Fire retardant is trichloroethyl phosphate TCPP; Mineral filler is used calcium carbonate, silicon powder, and aluminium hydroxide etc., for increasing the viscosity of component, and can reduce the cost of raw material.The density of the urethane sealing foam of preparation is, between 0.2～0.8g/cm3.Water-intake rate is less than 30%.
Water-intake rate test.Sealing foam batten is soaked in 25 ℃ of water of normal temperature, after 24 hours, measures the percentage that its weight increases.
Embodiment
Provide 4 specific embodiments below in conjunction with content of the present invention, the raw material that related combination polyvalent alcohol formula uses:
(1) take glycerine as initiator polyether polyol with high activity, molecule hydroxyl value 3, hydroxyl value 40.
(2) polyether polyol with high activity take ethylene glycol as initiator, molecule hydroxyl value 2, hydroxyl value 28.
(3) ethylene glycol
(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) calcium carbonate 400 orders
(15) many phenylmethanes polyisocyanates MDI 44V20
(16) Carbodiimide-Modified MDI
Make combination polyvalent alcohol by 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 example 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 formula of upper table embodiment 1, configuration A component and B component.Take reaction and injection molding process, cast equipment uses 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/cm3.Foam water-intake rate is 20%.
Embodiment 2
By the formula of upper table embodiment 2, configuration A component and B component.Take reaction and injection molding process, cast equipment uses 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/cm3.Foam water-intake rate is 25%.
Embodiment 3
By the formula of upper table embodiment 3, configuration A component and B component.Take reaction and injection molding process, cast equipment uses 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/cm3.Foam water-intake rate is 22%.
Embodiment 4
By the formula of upper table embodiment 4, configuration A component and B component.Take reaction and injection molding process, cast equipment uses 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/cm3.Foam water-intake rate is 25%.
Comparative example 5
By the formula of upper table embodiment 5, configuration A component and B component.Take reaction and injection molding process, cast equipment uses 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/cm3.Foam water-intake rate is 80%.
Claims (2)
1. one kind has the preparation method of water sealing property polyurethane foam, the raw material that it is characterized in that preparing polyurethane foam is to be made up of A, B two components: A component comprises polyol blends, mill base, silicon foams stablizer, catalyzer, tackifier, fire retardant, filler, water-resisting agent and anti-aging agent, adopt water as whipping agent; B component is polymeric MDI or modification MDI; After A component and B component are measured respectively, high-speed mixing, cast reaction foaming, becomes after curing molding and has water sealing property polyurethane foam; Polyol blends in described A component, is the mixture of macromolecular polyol and small molecule chain extender, and consumption is 80%～95% of A component total mass; Wherein, macromolecular polyol be take glycerine as initiator, molecule hydroxyl value as 3, the polyether polyol with high activity of hydroxyl value as 40, or take glycerine as initiator, molecule hydroxyl value as 3, the polyether polyol with high activity of hydroxyl value as 40 and take ethylene glycol as initiator, molecule hydroxyl value as 2, the mixture of the polyether polyol with high activity of hydroxyl value as 28, consumption is the 95-99% of polyol blends total mass; Small molecule chain extender is ethylene glycol or BDO, and consumption is 1～5% of polyol blends total mass; Described water-resisting agent is polyethylene powders or polytetrafluorethylepowder powder, and fineness is for being less than 200 orders, and consumption is 1%～5% of A component total mass; Described tackifier are silicon-dioxide; Filler is calcium carbonate or silicon powder.
2. according to the preparation method with water sealing property polyurethane foam claimed in claim 1, it is characterized in that: described catalyzer is trimethylamine class or organic tin catalysts for polyurethanes; Described fire retardant is trichloroethyl phosphate TCPP; Described anti-aging agent is antioxidant 1010.
3. according to the preparation method with water sealing property polyurethane foam claimed in claim 1, it is characterized in that: the density of described urethane sealing foam, between 0.2～0.8g/cm3.
4. according to the preparation method with water sealing property polyurethane foam claimed in claim 1, it is characterized in that: mixed A, B component have good thixotropic property, can be at non-horizontal position foaming.
5. according to the preparation method with water sealing property polyurethane foam claimed in claim 1, it is characterized in that: described preparation method is after using polyurethane foam casting molding machine that A component and B component are measured respectively, high-speed mixing, be poured into the position that needs sealing, after the moulding of reaction foamed solidification, become sealing foam.
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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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| CN102775579B true CN102775579B (en) | 2014-06-11 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| EP3066142B1 (en) * | 2013-11-08 | 2019-03-06 | Basf Se | 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798376A (en) * | 2010-03-19 | 2010-08-11 | 青岛科技大学 | Method for preparing water-expandable polyurethane elastomer |
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| CA2441246A1 (en) * | 2002-09-23 | 2004-03-23 | Hilti Aktiengesellschaft | Two-component foam system for producing constructional foams and their use |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798376A (en) * | 2010-03-19 | 2010-08-11 | 青岛科技大学 | Method for preparing water-expandable polyurethane elastomer |
Non-Patent Citations (2)
| Title |
|---|
| 原料对聚醚聚氨酯微孔弹性体弹性和韧性的影响;徐强等;《化学推进剂与高分子材料》;20001231(第2期);第7-8页 * |
| 徐强等.原料对聚醚聚氨酯微孔弹性体弹性和韧性的影响.《化学推进剂与高分子材料》.2000,(第2期),第7-8页. |
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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. |