A kind of low density PU plate of roof of the vehicle special use
Technical field
The present invention relates to automotive trim polyurethane foam production technical field, is a kind of low density PU plate of roof of the vehicle special use specifically.
Background technology
Existing internal decoration of car ceiling mostly adopts the polyurethane foam board manufacturing method, and namely polyurethane foam board and non-woven fabrics, glass fibre, tackiness agent are combined into base material, through heating and mould pressing and the compound internal decoration of car ceiling that becomes of fabric.Along with the raising of production technology and reduce the demand of cost, low density PU plate more and more comes into one's own, and present low density PU plate exists the 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 a kind of low density PU plate of roof of the vehicle special use is provided, mainly solve the 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 a kind of low density PU plate of roof of the vehicle special use, its special character is that it is made by the raw material of following weight proportioning: 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 low density PU plate of a kind of roof of the vehicle special use of the present invention, it is made by the raw material of following optimum weight proportioning: 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 low density PU plate of a kind of roof of the vehicle special use of the present invention, its described polyether glycol are two or more mixing among polyethers 350, polyethers 4110, polyethers 330N, polyethers 700, polyethers 3050, the polyethers ED-28.
The low density PU plate of a kind of roof of the vehicle special use of the present invention, its described polyester polyol are one or both mixing among phthalic anhydride polyester 3152, the phthalic anhydride polyester DF380.
The low density PU plate of a kind of roof of the vehicle special use of the present invention, its described silicone oil that hard bubbles are one or both mixing among AK-8805, AK-8835, L580, the HP-850.
The low density PU plate of a kind of roof of the vehicle special use of the present invention, its described amines catalyst are one or both the combination among AS-33, C6608, HP305, the HP115.
The low density PU plate of a kind of roof of the vehicle special use of the present invention, its described whipping agent are a kind of among water, HCFC-141b, the HFC-245fa.
The low density PU plate of a kind of roof of the vehicle special use of the present invention, its described thick MDI are a kind of among PM-200,44V20, M20S, the MR-200.
The low density PU plate of a kind of roof of the vehicle special use of the present invention, its described pore-creating agent is 501 tensio-active agents.
The low density PU plate of a kind of roof of the vehicle special use of the present invention, its described high functionality polyether glycol is take sucrose as initiator, the functionality 6-7 of synthesizing polyether.
The low density PU plate of a kind of roof of the vehicle special use of the present invention is on the basis of existing polyurethane foamed material, the silicone oil that hard bubbles that adds optimum proportion in its proportioning raw materials makes foam aperture evenly, in order, adding pore-creating agent makes the PU cystose possess perforate raising dimensional stability, add benzoic anhydride polyester polyol, can the Effective Raise tensile strength, add the high functionality polyether glycol, so that elongation at break and compressive strength improve.
The low density PU plate of a kind of roof of the vehicle special use 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 make the A material, A material and thick MDI(isocyanic ester) react, foaming becomes urethane bulla piece, the polyurethane foam piece that plasticizing is good is cut edge, is cut into slices, make the low density PU plate of roof of the vehicle special use, the low density PU plate density of the roof of the vehicle special use of making is 15-25Kg/m3.
Compared with the prior art the low density PU plate of a kind of roof of the vehicle special use of the present invention has outstanding substantive distinguishing features and marked improvement, and its rigidity is strong, good stability of the dimension, and cost is low.
Embodiment:
For Comprehension and Implementation better, describe the present invention in detail below in conjunction with embodiment.
Embodiment 1, take by weighing exactly polyethers 330N and polyethers 4,110 70 Kg, benzoic anhydride polyester polyol DF380 20 Kg, high functionality polyether glycol 10 Kg, silicone oil AK-8805 1Kg hard bubbles, amines catalyst HP115 and AS-33 0.5Kg, whipping agent water 5.0 Kg, pore-creating agent A501 0.8 Kg, it is mixed make A material, the A material mixed high-speed stirring 30 seconds with PM-200 140 Kg, and foaming becomes urethane bulla piece, the polyurethane foam piece that plasticizing is good is cut edge, is cut into slices, and makes the low density PU plate of roof of the vehicle special use.
Embodiment 2, take by weighing exactly polyethers 3050, polyethers ED28 60 Kg, phthalic anhydride polyester DF380, benzoic anhydride polyester polyol 3152 30Kg, high functionality polyether glycol 10 Kg, silicone oil L-580 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, it is mixed support A material, mixed high-speed stirring 40 seconds with 44,V20 160 Kg again, foaming becomes urethane bulla piece, the polyurethane foam piece that plasticizing is good is cut edge, cut into slices, make the low density PU plate of roof of the vehicle special use.
Embodiment 3, take by weighing exactly polyethers 700, polyethers 4110 50Kg, 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, and the polyurethane foam piece that plasticizing is good is cut edge, cut into slices, and makes the low density PU plate of roof of the vehicle special use.
Embodiment 4, take by weighing exactly polyethers 330N, polyethers 700, polyethers 350 65Kg, polyester polyol DF380 22 Kg, high functionality polyether glycol 13 Kg, silicone oil AK-8805 1.3 Kg 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 make 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, cut into slices, make the low density PU plate of roof of the vehicle special use.
Embodiment 5, take by weighing exactly polyethers 330N, polyethers 700 and polyethers 4,110 60 Kg, phthalic anhydride polyester DF380 25 Kg, high functionality polyether glycol 15 Kg, silicone oil AK-8805 and HP-850 1.5 Kg hard bubble, amines catalyst AS-33, C6608t HP305 0.3Kg, whipping agent water 10.0Kg, HCFC-141b 10 Kg, pore-creating agent A501 0.75 Kg, it is mixed make A material, mixed high-speed stirring 35 seconds with 44,V20 160 Kg again, foaming becomes urethane bulla piece, the polyurethane foam piece that plasticizing is good is cut edge, cut into slices, make the low density PU plate of roof of the vehicle special use.
Embodiment 6, take by weighing exactly polyethers 330N and polyethers 4,110 70 Kg, benzoic anhydride polyester polyol DF380 20 Kg, high functionality polyether glycol 10 Kg, silicone oil AK-8805 1Kg hard bubbles, amines catalyst HP115 and AS-33 0.1Kg, whipping agent water and HCFC-141b 25Kg, pore-creating agent A501 0.5 Kg, it is mixed make A material, the A material mixed high-speed stirring 30 seconds with PM-200 160 Kg, and foaming becomes urethane bulla piece, the polyurethane foam piece that plasticizing is good is cut edge, is cut into slices, and makes the low density PU plate of roof of the vehicle special use.
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 |