Formula and production process of co-polypropylene foamed plastic
A technology of copolymerized polypropylene and foam plastics, which is applied in the field of formula and production technology using polypropylene as raw material, can solve the problems of high cost, difficult to degrade and recycle, complex process, etc., and achieve low cost, good shape recovery stability, The effect of simple processing technology
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Embodiment 1
[0030] A formulation of copolymerized polypropylene foam, comprising
[0031] Polypropylene resin F5006: 100 parts
[0032] Talc powder reinforcing filler: 10-80 parts
[0033] Active zinc oxide ZNO: 1.0-3.0 parts
[0034] Stearic acid ST: 0.5-1.0 parts
[0035] Zinc stearate ZNST: 1.0-1.5 parts
[0036] Organic peroxide initiator DCP: 0.01-0.05 parts
[0037] Cross-linking aid TMPTMA: 1.0-3.0 parts
[0038] Coupling agent 172: 0.2-0.5 parts
[0039] Peroxide crosslinking agent DCP: 0.5-0.8 parts
[0040] Azo blowing agent AC165: 1.0-5.0 parts.
[0041] The product performance test of the foamed plastic obtained by using the above formula is as follows, linear ratio: 1.7; volume expansion ratio: 4.913; hardness: 75C; specific gravity: 0.16g / cm^3.
[0042] Above-mentioned formula is just a larger range value of each component in the formula, not concrete, is a preferred version of formula of the present invention as embodiment 2, and the formula of embodiment 2 comprise...
Embodiment 2
[0053] Example 2 gives the specific number of parts of each component of the formula, which is a more preferred solution. For the product obtained in Example 2, the performance test results of the product are as follows, linear magnification: 2.0; volume expansion magnification: 8.0; Hardness: 60C; specific gravity 0.09 g / cm^3.
[0054] A production process for producing copolymerized polypropylene foam using the above formula, the steps include: 1. Weigh the required raw materials according to the proportion of the above formula, and mix the main base material (polypropylene resin), processing aids, and initiators evenly and put them into 2. Mix through the internal mixer in step 1, and set the internal mixing temperature to 125°C. When the temperature reaches the set value, put the crosslinking agent and foaming agent into the internal mixer, and blank The temperature is set to 135°C, and the blanking time is set to 15 minutes; 3. Transfer the mixture in step 2 to the open m...
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