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CN-122011321-A - Quick-release polyurethane composition, quick-release polyurethane sandwich panel, preparation method and production system thereof

CN122011321ACN 122011321 ACN122011321 ACN 122011321ACN-122011321-A

Abstract

The invention provides a quick-release polyurethane composition, a quick-release polyurethane sandwich panel, a preparation method and a production system thereof, and relates to the technical field of sandwich panels. The quick-release polyurethane composition adopts polyether polyol I and polyether polyol II which are compounded with flame-retardant polyester polyol, catalyst, silicon surfactant, water, flame retardant, foaming agent and the like with specific dosage and physical parameters such as specific functionality, hydroxyl value, viscosity and the like as the material A, the flowability of a combined material formed by the material A and the material B isocyanate is good, the combined material can be quickly polymerized after being mixed, gas is released, a foam structure is formed, the foam is cured quickly, the demolding of polyurethane foam can be realized in a short time, and the improvement of production efficiency is facilitated. The invention also provides a quick-release polyurethane sandwich panel which is prepared from the quick-release polyurethane composition. The invention also provides a production system and a preparation method of the quick-release polyurethane sandwich panel.

Inventors

  • WU YADONG
  • ZHANG SHUAI
  • WANG CHI
  • TAO YINGXIN
  • LIU JIANHUI
  • Chang Xiaokang
  • YUAN HAISHUN
  • YANG YUMING

Assignees

  • 河北亚东化工集团有限公司
  • 上海垭东化学有限公司
  • 上海亚东实新技术集团有限公司
  • 河北亚东新材料有限公司
  • 沧州垭东新材料科技有限公司
  • 石家庄亚东聚氨酯有限公司

Dates

Publication Date
20260512
Application Date
20260228

Claims (10)

  1. 1. The quick-release polyurethane composition is characterized by comprising a material A and a material B, wherein the weight ratio of the material A to the material B is 1 (1.0-1.2); the material A comprises the following raw materials, by weight, 15-30 parts of flame-retardant polyester polyol, 15-30 parts of polyether polyol I, 15-30 parts of polyether polyol II, 3.0-5.0 parts of a catalyst, 1.0-3.0 parts of a silicon surfactant, 1.5-2.0 parts of water, 15-30 parts of a flame retardant and 10-20 parts of a physical foaming agent; Wherein the functionality of the flame-retardant polyester polyol is 2.0-2.7, the hydroxyl value is 100-300mgKOH/g, and the viscosity at 25 ℃ is 12000-40000 mPa.s; The polyether polyol I is polyether polyol taking toluenediamine and propylene oxide as starting agents, the functionality of the polyether polyol I is 4.0-5.8, the hydroxyl value is 380-480mgKOH/g, and the viscosity at 25 ℃ is 35000-45000 mPa.s; The polyether polyol II is polyether polyol taking sucrose and diethylene glycol or sucrose and glycerin as starting agents, the functionality of the polyether polyol II is 4.0-5.8, the hydroxyl value is 360-450mgKOH/g, and the viscosity at 25 ℃ is 10000-35000mPa.s; The material B is polymethylene polyphenyl polyisocyanate.
  2. 2. The quick release polyurethane composition of claim 1, wherein the weight ratio of polyether polyol I to polyether polyol II is (1-2): 1.
  3. 3. The quick release polyurethane composition of claim 1, wherein the polyether polyol I is selected from one or more of the polyether polyols having the designations YD-402P, YD-402PB, YD-400P or INOVOL R4560; and/or the polyether polyol II is selected from one or more of polyether polyols with the marks of YD-1050 and YD-8315; And/or the flame-retardant polyester polyol is one or more selected from polyester polyols with the marks of YD-9250, YD-9245, STEPANPOL PS-7002 and XF-2007.
  4. 4. A quick release polyurethane composition according to any one of claims 1 to 3, wherein the catalyst is selected from one or more of PC5 in the united states aerochemical industry, PC8 in the united states aerochemical industry, TMR-2 and BDMA; And/or the flame retardant is selected from one or more of TCPP, TEP and TCEP.
  5. 5. A quick release polyurethane composition as claimed in any one of claims 1 to 3 wherein the silicon based surfactant is a silicon-carbon based surfactant selected from one or more of Jiangsu meisi oil M-8860, jiangsu meisi oil M-88313, cangzhou junchi silicone oil JC-7750, zhongshan Dongjun silicone oil 3363; and/or the physical blowing agent comprises one or more of n-pentane, isopentane, cyclopentane, or 245 FA.
  6. 6. A quick release polyurethane sandwich panel, which is characterized by comprising two layers of metal panels and a polyurethane core material positioned between the two layers of metal panels, wherein the polyurethane core material is prepared from the quick release polyurethane composition as claimed in any one of claims 1 to 5; preferably, the thickness of the single-layer metal panel is 0.3-0.5mm; preferably, the thickness of the quick-release polyurethane sandwich panel is 2.0-10.0cm.
  7. 7. The production system of the quick-release polyurethane sandwich panel according to claim 6, which is characterized by comprising an annular conveying line (1), a plurality of laminating machines (2), a foaming machine (3) and a blanking robot (4); A plurality of laminator (2) install in proper order on annular transfer chain (1) and along with the operation of annular transfer chain (1) is removed, all be equipped with heating system in the upper die bed and the lower floor's die bed of laminator (2), heating system can preheat the die cavity of installing on laminator (2) that is made by two piece upper and lower metal panels, foaming machine (3) are located the other material injection district of annular transfer chain (1), foaming machine (3) are used for to set up on laminator (2) by the die cavity of two upper and lower metal panels is interior to inject quick-release polyurethane composition, unloading robot (4) are located the other unloading district of annular transfer chain (1), unloading robot (4) are used for taking out on laminator (2) the polyurethane sandwich panel that the quick-release polyurethane composition made.
  8. 8. The production system of the quick-release polyurethane sandwich panel according to claim 7, characterized in that the ratio of the length of the annular conveying line (1) from the foaming machine (3) to the blanking robot (4) to the circumference of the annular conveying line (1) is 1/5-1/3; And/or the travelling speed of the annular conveying line (1) is 2-3m/min; And/or the time required for the laminator (2) to move from the foaming machine (3) to the blanking robot (4) is 4-8min; And/or, the blanking robot (4) comprises a robot body and a sucker mechanism, and the sucker mechanism is arranged on the robot body.
  9. 9. The method for preparing the quick release polyurethane sandwich panel according to claim 6, which is characterized by adopting the production system of the quick release polyurethane sandwich panel according to claim 7 or 8, comprising the following steps: (a) Installing cavities made of an upper metal panel and a lower metal panel on the laminating machine (2); (b) In the moving process of the laminating machine (2) provided with the cavity after the treatment in the step (a) to the foaming machine (3) along with the operation of the annular conveying line (1), preheating the cavity through a heating system in an upper layer die bed and a lower layer die bed of the laminating machine (2); (c) When the laminator (2) treated in the step (B) moves to the foaming machine (3) along with the operation of the annular conveying line (1), the annular conveying line (1) pauses to operate, the foaming machine (3) carries out opposite-impact mixing on the material A and the material B in the quick-release polyurethane composition, and then the mixed quick-release polyurethane composition is injected into a preheated cavity on the laminator (2) to carry out material injection operation; (d) After the material injection is finished, the annular conveying line (1) continues to run, the laminating machine (2) processed in the step (c) moves to the blanking robot (4) along with the running process of the annular conveying line (1) for 4-8min, and the polyurethane composition in the cavity finishes rapid foaming, curing and forming in the process, so that the rapid-release polyurethane sandwich panel is prepared.
  10. 10. The method for producing a quick release polyurethane sandwich panel according to claim 9, characterized in that in step (b), the preheating temperature of the cavity is 35-42 ℃; and/or, in the step (C), controlling the material temperature of the material A and the material B to be 20-25 ℃ before carrying out opposite-impact mixing; and/or in the step (d), the advancing speed of the annular conveying line (1) is 2-3m/min.

Description

Quick-release polyurethane composition, quick-release polyurethane sandwich panel, preparation method and production system thereof Technical Field The invention belongs to the technical field of sandwich panels, and particularly relates to a quick-release polyurethane composition, a quick-release polyurethane sandwich panel, a preparation method and a production system thereof. Background Polyurethane rigid foam sandwich panels (polyurethane sandwich panels) are widely applied to a plurality of fields such as building, refrigeration and cold insulation, vehicle manufacturing and the like. The pouring molding in the polyurethane rigid foam sandwich panel molding process is divided into a continuous type and an intermittent type according to the process condition of foaming molding, wherein the continuous type has high production efficiency for large-scale batch production of sandwich panels with the same size compared with the intermittent type, but requires relatively fixed track length and space field. And continuous mode is not flexible in intermittent mode, and each batch can only produce sandwich panels with relatively fixed size. Intermittent production efficiency is lower, and the cost of labor is higher, but the mould is nimble, has the advantage to unconventional panel. Meanwhile, due to the limitation of foam curing time, the continuous track length and intermittent die opening time can be correspondingly increased, and the problems of production efficiency, site limitation and the like are seriously affected. Therefore, how to develop a polyurethane sandwich board with short foam curing time and quick demoulding and a production process line matched with the polyurethane sandwich board and high in production efficiency and flexible is a hot spot for research in the field. In view of this, the present invention has been made. Disclosure of Invention The present invention is directed to a quick release polyurethane composition, a quick release polyurethane sandwich panel, and a method and system for preparing the same, which improve the above-mentioned problems of the prior art. In order to achieve the above purpose, the following technical scheme is adopted: The first aim of the invention is to provide a quick-release polyurethane composition which consists of a material A and a material B, wherein the weight ratio of the material A to the material B is 1 (1.0-1.2); The material A comprises the following raw materials, by weight, 15-30 parts of flame-retardant polyester polyol, 15-30 parts of polyether polyol I, 15-30 parts of polyether polyol II, 3.0-5.0 parts of a catalyst, 1.0-3.0 parts of a silicon surfactant, 1.5-2.0 parts of water, 15-30 parts of a flame retardant and 10-20 parts of a physical foaming agent; Wherein the functionality of the flame-retardant polyester polyol is 2.0-2.7, the hydroxyl value is 100-300mgKOH/g, and the viscosity at 25 ℃ is 12000-40000 mPa.s; The polyether polyol I is polyether polyol taking toluenediamine and propylene oxide as starting agents, the functionality of the polyether polyol I is 4.0-5.8, the hydroxyl value is 380-480mgKOH/g, and the viscosity at 25 ℃ is 35000-45000 mPa.s; The polyether polyol II is polyether polyol taking sucrose and diethylene glycol or sucrose and glycerin as starting agents, the functionality of the polyether polyol II is 4.0-5.8, the hydroxyl value is 360-450mgKOH/g, and the viscosity at 25 ℃ is 10000-35000mPa.s; The material B is polymethylene polyphenyl polyisocyanate. Furthermore, on the basis of the technical scheme of the invention, the weight ratio of the polyether polyol I to the polyether polyol II is (1-2): 1. Further, on the basis of the technical scheme, the polyether polyol I is selected from one or more of polyether polyols with the marks of YD-402P, YD-402PB, YD-400P or INOVOL R4560; and/or the polyether polyol II is selected from one or more of polyether polyols with the marks of YD-1050 and YD-8315; and/or the flame-retardant polyester polyol is selected from one or more of polyester polyols with the marks of YD-9250, YD-9245, STEPANPOL PS-7002 or XF-2007. Further, on the basis of the technical scheme, the catalyst is selected from one or more of PC5 in the United states of America air chemical industry, PC8 in the United states of America air chemical industry, TMR-2 and BDMA; And/or the flame retardant is selected from one or more of TCPP, TEP and TCEP. Furthermore, on the basis of the technical scheme, the silicon surfactant is a silicon-carbon surfactant and is selected from one or more of Jiangsu Meissun silicone oil M-8860, jiangsu Meissun silicone oil M-88313, cangzhou Junchi silicone oil JC-7750 or Zhongshan Dongjun silicone oil 3363; and/or the physical blowing agent comprises one or more of n-pentane, isopentane, cyclopentane, or 245 FA. The second object of the invention is to provide a quick-release polyurethane sandwich panel, which comprises two layers of metal panels and a polyurethane core material p