Research Article
The Effects of Various Additive Components on the Sound Absorption Performances of Polyurethane Foams
Table 1
Major characteristic of the materials.
| | | Materials | Supplier |
| | Isocyanate | MDI | Guangzhou Yuju Chemical Co. China | | Polyether polyol | 3630 | Guangzhou Yuju Chemical Co. China | | Polyether polyol | 330N | Guangzhou Yuju Chemical Co. China | | Catalyst | A1 and A33 | Guangzhou Yuju Chemical Co. China | | Catalyst | TEA | Jiahua Fushun Chemical Co. China | | Surfactant | Silicone 8681 | Guangzhou Yuju Chemical Co. China | | Blowing agent | 141b | Guangzhou Yuju Chemical Co. China |
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