EVA composite foam material and preparation method thereof
A composite foaming and blowing agent technology, applied in the field of industrial materials, can solve problems affecting human health, etc., and achieve the effects of excellent elasticity, excellent physical properties, and low compression
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[0048] Correspondingly, the present invention also provides a preparation method of the EVA composite foam material, including the following steps:
[0049] Step 1: Weigh the following components in parts by weight: 50 to 90 parts of ethylene-vinyl acetate copolymer, 0 to 30 parts of polyolefin thermoplastic elastomer, 0 to 30 parts of EPDM, 0 to 20 parts of filler, 0.7 to 2.5 parts of odorless crosslinking agent, 1 to 8 parts of foaming agent and 5 to 10 parts of ammonia removal agent.
[0050] Step 2: Pour all the ingredients weighed in step 1 except for the odorless crosslinking agent, ammonia removal agent, and foaming agent into an internal mixer for mixing. The mixing time can preferably be 8 minutes to 10 minutes , The temperature can preferably be 110℃~115℃;
[0051] Step 3: Add the odorless crosslinking agent, ammonia removal agent, and foaming agent weighed in step 1 to the mixed materials for mixing. The mixing time can be preferably 5 minutes to 8 minutes, and the temper...
Example
[0056] Examples 1~3
[0057]
[0058] Table 1: Blending formula of EVA composite foam material (parts)
[0059] 1) Weigh the raw materials according to the composition of the raw materials in Table 1 and the weight parts of each component;
[0060] 2) Pour all the raw materials weighed in step 1 except for the crosslinking agent and foaming agent into an internal mixer for mixing. The mixing time is 8 minutes and the temperature is 110-115°C.
[0061] 3) Add odorless crosslinking agent, ammonia removal agent, and foaming agent to the material mixed in step two for mixing, mixing time 6 minutes, temperature 115-120°C.
[0062] 4) Pour the obtained mixture into a granulator for granulation, and then foam by molding or one-shot injection to obtain a foamed material for sports shoe soles.
[0063] After the foamed material for the sports shoe sole obtained in step 4 is cooled, it is processed to be rough through the semi-finished product treatment, and then molded and formed to obtain a fini...
Example
[0065] Examples 4~6
[0066]
[0067] Table 2: Blending formula of EVA composite foam material (parts)
[0068] 1) Weigh the raw materials according to the composition of the raw materials in Table 1 and the weight parts of each component;
[0069] 2) Pour all the raw materials weighed in step 1 except for the crosslinking agent and foaming agent into an internal mixer for mixing. The mixing time is 8 minutes and the temperature is 110-115°C.
[0070] 3) Add odorless crosslinking agent, ammonia removal agent, and foaming agent to the material mixed in step two for mixing, mixing time 6 minutes, temperature 115-120°C.
[0071] 4) Pour the obtained mixture into a granulator for granulation, and then foam by molding or one-shot injection to obtain a foamed material for sports shoe soles.
[0072] After the foamed material for the sports shoe sole obtained in step 4 is cooled, it is processed to be rough through the semi-finished product treatment, and then molded and formed to obtain a fini...
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