| abstract |
The invention provides a production method of a one-step method polypropylene foam material. The raw materials comprise polypropylene, polyethylene, azodicarbonamide, zinc oxide, zinc stearate, silicon dioxide, dicumyl peroxide, pentaerythritol triacrylate, ethylene-vinyl acetate copolymer, alpha crystal form nucleating agent, maleic anhydride grafted polypropylene, liquid paraffin and liquid acetone. The production method comprises the following steps: 1. mixing polypropylene, polyethylene, silicon dioxide, ethylene-vinyl acetate copolymer, alpha crystal form nucleating agent and maleic anhydride grafted polypropylene together for standby; 2. dissolving dicumyl peroxide in the liquid acetone; 3. mixing pentaerythritol triacrylate, liquid paraffin and the standby material together; 4. mixing the azodicarbonamide, zinc oxide and zinc stearate with the mixture uniformly; 5. extruding and foaming the material through an extruder; 6. compounding non-woven fabric on the two sides of the foam material and rolling to obtain the finished product. The material has high performance for absorbing impact load, good rebound resilience and heat-resisting performance, and can be recycled. |