The low density PU plate that a kind of roof of the vehicle is special-purpose
Technical field
The present invention relates to automotive trim and use the polyurethane foam production technical field, is the special-purpose low density PU plate of a kind of roof of the vehicle specifically.
Background technology
Existing car inner decorative ceiling mostly adopts the polyurethane foam board manufacturing method, and promptly polyurethane foam board and non-woven fabrics, spun glass, tackiness agent are combined into base material, through heating and mould pressing and the compound car inner decorative ceiling that becomes of lining.Along with the raising of production technology and the demand that reduces cost, low density PU plate more and more comes into one's own, and present low density PU plate exists problems such as poor rigidity, dimensional stability are general to need to solve.
Summary of the invention
Summary of the invention:
The objective of the invention is to overcome the deficiency of above-mentioned prior art, and provide a kind of roof of the vehicle special-purpose low density PU plate, mainly solve problems such as existing low density PU plate poor rigidity and dimensional stability are general.
In order to achieve the above object; The present invention is achieved in that the low density PU plate that a kind of roof of the vehicle is special-purpose; Its special character is that it is processed by the following weight proportion raw material: polyether glycol 50-70 part, benzoic anhydride polyester polyol 20-30 part, high functionality polyether glycol 10-20 part; Hard bubble silicone oil 1-2 part, amines catalyst 0.1-0.5 part, whipping agent 5-25 part, pore-creating agent 0.5-1.0 part, thick MDI 140-180 part, described low density PU plate density range: 15-25kg/m3.
The special-purpose low density PU plate of a kind of roof of the vehicle of the present invention; It is processed by following optimum weight proportion raw material: 60 parts of polyether glycols, 25 parts of benzoic anhydride polyester polyols, 15 parts of high functionality polyether glycols; Hard bubble 1.5 parts of silicone oil, 0.3 part of amines catalyst, 20 parts of whipping agents, 0.75 part of pore-creating agent, 160 parts of thick MDI.
The special-purpose low density PU plate of a kind of roof of the vehicle of the present invention, its described polyether glycol is two or more mixing among polyethers 350, polyethers 4110, polyethers 330N, polyethers 700, polyethers 3050, the polyethers ED-28.
The special-purpose low density PU plate of a kind of roof of the vehicle of the present invention, its described polyester polyol is one or both mixing among phthalic anhydride polyester 3152, the phthalic anhydride polyester DF380.
The special-purpose low density PU plate of a kind of roof of the vehicle of the present invention, its described silicone oil that hard bubbles is one or both mixing among AK-8805, AK-8835, L580, the HP-850.
The low density PU plate that a kind of roof of the vehicle of the present invention is special-purpose, its described amines catalyst are one or both the combination among AS-33, C6608, HP305, the HP115.
The low density PU plate that a kind of roof of the vehicle of the present invention is special-purpose, its described whipping agent are a kind of among water, HCFC-141b, the HFC-245fa.
The low density PU plate that a kind of roof of the vehicle of the present invention is special-purpose, its described thick MDI are a kind of among PM-200,44V20, M20S, the MR-200.
The special-purpose low density PU plate of a kind of roof of the vehicle of the present invention, its described pore-creating agent is 501 tensio-active agents.
The special-purpose low density PU plate of a kind of roof of the vehicle of the present invention, its described high functionality polyether glycol is to be initiator with sucrose, the functionality 6-7 of synthesizing polyether.
The special-purpose low density PU plate of a kind of roof of the vehicle of the present invention is on the basis of existing polyurethane foamed material; The silicone oil that hard bubbles that in its proportioning raw materials, adds optimum proportion makes foam aperture evenly, in order; Add pore-creating agent and make the PU cystose possess perforate property raising dimensional stability, add benzoic anhydride polyester polyol, can effectively improve tensile strength; Add the high functionality polyether glycol, make elongation at break and compressive strength improve.
The special-purpose low density PU plate of a kind of roof of the vehicle of the present invention; Its preparation method is to be mixed by polyether glycol, benzoic anhydride polyester polyol, high functionality polyether glycol, the silicone oil that hard bubbles, amines catalyst, whipping agent, pore-creating agent to process the A material; The A material reacts with thick MDI (isocyanic ester); Foaming becomes urethane bulla piece; The polyurethane foam piece that plasticizing is good is cut edge, is cut into slices, and makes the special-purpose low density PU plate of roof of the vehicle, and the special-purpose low density PU plate density of the roof of the vehicle of processing is 15-25Kg/m3.
Compared with present technology the special-purpose low density PU plate of a kind of roof of the vehicle of the present invention has outstanding substantive distinguishing features and marked improvement, and its rigidity is strong, and dimensional stability is good, and cost is low.
Embodiment:
In order to understand better and to implement, specify the present invention below in conjunction with embodiment.
Embodiment 1, takes by weighing polyethers 330N and polyethers 4,110 70 Kg exactly, benzoic anhydride polyester polyol DF380 20 Kg; High functionality polyether glycol 10 Kg, the silicone oil AK-8805 1Kg that hard bubbles, amines catalyst HP115 and AS-33 0.5Kg; Whipping agent water 5.0 Kg, pore-creating agent A501 0.8 Kg mixes it and processes A material; The A material mixed high-speed stirring 30 seconds with PM-200 140 Kg; Foaming becomes urethane bulla piece, and the polyurethane foam piece that plasticizing is good is cut edge, cut into slices, and makes the special-purpose low density PU plate of roof of the vehicle.
Embodiment 2, take by weighing polyethers 3050, polyethers ED28 60 Kg exactly, phthalic anhydride polyester DF380, benzoic anhydride polyester polyol 3152 30Kg; High functionality polyether glycol 10 Kg, the silicone oil L-580 that hard bubbles, AK-8835 2Kg, amines catalyst HP115 and C6608 0.1Kg; Blowing agent H CFC-141b 20 Kg, pore-creating agent A501 0.6 Kg mixes support A material with it; Mixed high-speed stirring 40 seconds with 44,V20 160 Kg again; Foaming becomes urethane bulla piece, and the polyurethane foam piece that plasticizing is good is cut edge, cut into slices, and makes the special-purpose low density PU plate of roof of the vehicle.
Embodiment 3, take by weighing polyethers 700, polyethers 4110 50Kg exactly, and phthalic anhydride polyester 3,152 30 Kg, high functionality polyether glycol 20Kg, silicone oil HP850 1.5Kg hard bubbles; Amines catalyst HP115 and HP305 0.3Kg, whipping agent water 5.0Kg, HFC-245fa 14 Kg; Pore-creating agent A501 0.5 Kg; It is mixed and made into the A material, mixed high-speed stirring 45 seconds with M20S 180 Kg again, foaming becomes urethane bulla piece; The polyurethane foam piece that plasticizing is good is cut edge, is cut into slices, and makes the special-purpose low density PU plate of roof of the vehicle.
Embodiment 4; Take by weighing polyethers 330N, polyethers 700, polyethers 350 65Kg exactly, polyester polyol DF380 22 Kg, high functionality polyether glycol 13 Kg, silicone oil AK-8805 1.3 Kg that hard bubble, amines catalyst AS-33, HP305, C6608 0.4Kg; Whipping agent water 5.0Kg, HCFC-141b 10 Kg; Pore-creating agent A501 1.0 Kg, it is mixed process A material, mixed high-speed stirring 35 seconds with MR-200 170 Kg again, foaming becomes urethane bulla piece; The polyurethane foam piece that plasticizing is good is cut edge, is cut into slices, and makes the special-purpose low density PU plate of roof of the vehicle.
Embodiment 5, take by weighing polyethers 330N, polyethers 700 and polyethers 4,110 60 Kg exactly, phthalic anhydride polyester DF380 25 Kg; High functionality polyether glycol 15 Kg, hard bubble silicone oil AK-8805 and HP-850 1.5 Kg, amines catalyst AS-33, C6608t HP305 0.3Kg; Whipping agent water 10.0Kg, HCFC-141b 10 Kg, pore-creating agent A501 0.75 Kg mixes it and processes A material; Mixed high-speed stirring 35 seconds with 44,V20 160 Kg again; Foaming becomes urethane bulla piece, and the polyurethane foam piece that plasticizing is good is cut edge, cut into slices, and makes the special-purpose low density PU plate of roof of the vehicle.
Embodiment 6, take by weighing polyethers 330N and polyethers 4,110 70 Kg exactly, benzoic anhydride polyester polyol DF380 20 Kg; High functionality polyether glycol 10 Kg, the silicone oil AK-8805 1Kg that hard bubbles, amines catalyst HP115 and AS-33 0.1Kg; Whipping agent water and HCFC-141b 25Kg, pore-creating agent A501 0.5 Kg mixes it and processes A material; The A material mixed high-speed stirring 30 seconds with PM-200 160 Kg; Foaming becomes urethane bulla piece, and the polyurethane foam piece that plasticizing is good is cut edge, cut into slices, and makes the special-purpose low density PU plate of roof of the vehicle.
The key technical indexes that the PU plate of above embodiment reaches:
Sequence number |
Project |
Index |
1 |
Density (kg/m3) |
15-25 |
2 |
Flexural strength (Mpa) |
≥180 |
3 |
Compressive strength (Kpa) |
≥130 |
4 |
Tensile strength (Kpa) |
≥160 |
5 |
Elongation at break (%) |
≥10 |