Waste foamed plastic recycling processTechnical Field
The invention relates to the technical field related to foam plastic processing, in particular to a waste foam plastic recycling process.
Background
The foamed plastic is a high polymer material formed by dispersing a large number of gas micropores in solid plastic, has the characteristics of light weight, heat insulation, sound absorption, shock absorption and the like, has dielectric properties superior to matrix resin, and has wide application range. Almost all kinds of plastics can be made into foamed plastics, and foam molding has become an important field in plastic processing.
The foam plastic can be directly discarded after being reused or incinerated, the environment is greatly polluted, the traditional process steps for recycling the waste foam plastic are complicated, certain conditions are required for implementation, the limitation is realized, and the implementation cost is high.
Disclosure of Invention
The invention aims to provide a waste foam plastic recycling process aiming at the existing problems, and solves the problems that the traditional process for recycling waste foam plastic, which is proposed in the background art, has more complicated steps, needs certain conditions for implementation, has limitations and higher implementation cost.
The technical scheme adopted by the invention for realizing the technical purpose is as follows: a process for recycling waste foam plastics comprises seven process steps: step 1: primarily cleaning the foamed plastic; step 2: cutting the foamed plastic; and step 3: primarily crushing and grinding; and 4, step 4: adding an active agent for soaking; and 5: crushing and grinding again; step 6: mixing into a castable; and 7: foaming and curing.
Further, the step 1 of primarily cleaning the foam plastic comprises the following specific process steps: the waste foamed plastics are gathered and washed by clean water through a water pipe, dust on the surfaces of the waste foamed plastics is washed clean, and obvious impurities on the surfaces of the waste foamed plastics are removed.
Further, the specific process steps for cutting the foam plastic in the step 2 are as follows: after the cleaning treatment, the foamed plastic is dried, placed on a cutting workbench according to the specification and size, and cut according to the equal proportion, so that the cut foamed plastic has the same volume.
Further, the specific process steps of the primary crushing and grinding in the step 3 are as follows: and (3) carrying out preliminary manual crushing and grinding on the foamed plastic cut out in the step (2), wherein the foamed plastic is only required to be crushed without sufficient crushing and grinding.
Further, the specific process steps of adding the active agent to soak in the step 4 are as follows: soaking the foam plastic which is subjected to primary crushing and grinding in the step 3 into an active agent, wherein the active agent comprises the following components in parts by weight: 5-8 parts of sodium octadecyl sulfate, 2-4 parts of polyvinyl chloride, 3-6 parts of polysorbate, 7-9 parts of oxalic acid dihydrate, 4-5 parts of potassium chloride and 3-6 parts of glycerol.
Further, the step 5 of crushing and grinding again specifically comprises the following steps: and (4) putting the foamed plastic soaked in the active agent in the step (4) into a grinder for grinding for 30-40 min, and then putting the foamed plastic into a grinder for grinding for 20-35 min to finally obtain the foamed plastic in a granular shape.
Further, the concrete process steps of mixing the castable in the step 6 are as follows: preparing a mixed liquid in advance, wherein the mixed liquid comprises the following components: and (3) putting the particles crushed and ground in the step (5) into mixed liquid, soaking for 15-20 min, putting the particles into a stirrer together, and stirring for 25-30 min, wherein the mixture after stirring is the castable.
Further, the step 7 of foaming and curing comprises the following specific process steps: and (4) performing foaming curing treatment on the casting material finally formed in the step (6), wherein the foaming curing time is 1-1.5 h, and finally preparing the rigid foam plastic plate.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be illustrative, but not limiting, of the scope of the invention, and the conditions employed in the examples may be further modified depending upon the specific industry and the conditions not specifically recited are generally conventional in the art.
The method comprises the following specific process steps:
s1, collecting the waste foamed plastics, cleaning the waste foamed plastics with clear water by using a water pipe, cleaning dust on the surfaces of the waste foamed plastics, and removing obvious impurities on the surfaces of the waste foamed plastics.
S2, after the cleaned foamed plastic is dried, the cleaned foamed plastic is placed on a cutting workbench according to the specification and size, and cutting is carried out according to the equal proportion, so that the cut foamed plastic is the same in volume.
And S3, carrying out preliminary manual crushing and grinding on the foamed plastic cut in the step 2, wherein the foamed plastic is only required to be crushed without sufficient crushing and grinding.
S4, soaking the foam plastic which is subjected to primary crushing and grinding in the step 3 into an active agent, wherein the active agent comprises the following components in parts by weight: 5-8 parts of sodium octadecyl sulfate, 2-4 parts of polyvinyl chloride, 3-6 parts of polysorbate, 7-9 parts of oxalic acid dihydrate, 4-5 parts of potassium chloride and 3-6 parts of glycerol.
S5, putting the foamed plastic soaked in the activating agent in the step 4 into a grinder for grinding for 30-40 min, and then putting the foamed plastic into a grinder for grinding for 20-35 min to finally obtain granules.
S6, preparing a mixed liquid in advance, wherein the mixed liquid comprises the following components: and (3) putting the particles crushed and ground in the step (5) into mixed liquid, soaking for 15-20 min, putting the particles into a stirrer together, and stirring for 25-30 min, wherein the mixture after stirring is the castable.
And S7, performing foaming curing treatment on the casting material finally formed in the step 6 for 1-1.5 hours to finally prepare the rigid foam plastic plate.
Various other changes and modifications to the above-described embodiments and concepts may occur to those skilled in the art, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.