Improved polypropylene renewable material modified plate foaming process

A new polypropylene material and recycled material technology, applied in the field of improved polypropylene recycled material modified sheet foaming process, can solve the problems of uneven surface of the sheet, difficult to control the thickness of the sheet, poor surface quality of the sheet, etc., and achieve a smooth surface. , good surface quality, the effect of improving performance

Inactive Publication Date: 2010-08-04
惠州市峄董塑胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the chemically modified polypropylene recycled material improves the performance in one direction, it often sacrifices the performance in other aspects, and the performance of polypropylene recycled material in other directions will be worse
For example, under the same technical conditions, when the modified polypropylene recycled material is used for foaming, the nucleation effect during the foaming process is poor and the foaming is uneven, which makes it difficult to control the thickness of the foamed sheet. The surface is uneven and the surface quality of the board is poor

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0063]An embodiment of the improved foaming process of polypropylene recycled materials modified boards according to the present invention comprises the following steps: before using polypropylene recycled materials for foaming process, adding branched polypropylene new materials to polypropylene recycled materials material, sodium benzoate, sorbitol, antioxidant and titanate coupling agent, and the branched polypropylene new material, sodium benzoate, sorbitol, antioxidant and titanate coupling agent are mixed with polypropylene recycled material to form mixed raw materials;

[0064] The proportions of the recycled polypropylene material, branched polypropylene new material, sodium benzoate, sorbitol, antioxidant and titanate coupling agent in the total weight of the mixed raw material are respectively:

[0065] Polypropylene recycled material 40-84%,

[0066] Branched polypropylene virgin 15-55%,

[0067] Sodium Benzoate 0.25-1.5%,

[0068] Sorbitol 0.25-1.5%,

[0069] A...

Embodiment 2

[0081] Embodiment 2 of the present invention is a more specific implementation of the present invention. Its steps are the same as those of Embodiment 1, and will not be repeated here. The difference is that:

[0082] The proportions of the recycled polypropylene material, branched polypropylene new material, sodium benzoate, sorbitol, antioxidant and titanate coupling agent in the total weight of the mixed raw material are respectively:

[0083] Polypropylene Recycled 40%,

[0084] Branched polypropylene virgin 59%,

[0085] Sodium Benzoate 0.25%,

[0086] Sorbitol 0.25%,

[0087] Antioxidant 0.25%,

[0088] Titanate coupling agent 0.25%.

Embodiment 3

[0090] Embodiment 3 of the present invention is a more specific implementation of the present invention, and its steps are the same as Embodiment 1, and will not be repeated here. The difference is that:

[0091] The proportions of the recycled polypropylene material, branched polypropylene new material, sodium benzoate, sorbitol, antioxidant and titanate coupling agent in the total weight of the mixed raw material are respectively:

[0092] Polypropylene Recycled 60%,

[0093] Branched polypropylene virgin 38%,

[0094] Sodium Benzoate 0.5%,

[0095] Sorbitol 0.5%,

[0096] Antioxidant 0.5%,

[0097] Titanate coupling agent 0.5%.

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Abstract

The invention relates to the technical field of processes of utilizing polypropylene renewable materials for foaming and processing plates, in particular to an improved polypropylene renewable material modified plate foaming process. Branched polypropylene new materials, sodium benzoate, sorbitol and an antioxidant are added in the polypropylene renewable materials for forming mixed raw materials, and the mixed raw materials are further used for carrying out the foaming process. The process modifies the polypropylene renewable materials during the foaming process, thereby improving the nucleation effect during the foaming process, improving the performances on various aspects of the polypropylene renewable materials, improving the proportion of the polypropylene renewable materials and improving the performances on various aspects of produced polypropylene renewable material plates; furthermore, the polypropylene renewable materials have the advantages of good physical performance, high strength, small degradation degree and stable quality; and the polypropylene renewable material plates obtained by processing through the foaming process have the advantages of uniform foaming, smooth surface of the polypropylene renewable material plates and good surface quality of the polypropylene renewable material plates, and the performances on all the aspects of the polypropylene renewable material plates are close to those of the branched polypropylene new material plates.

Description

technical field [0001] The invention relates to the technical field of processing technology for foaming boards by using recycled polypropylene materials, in particular to an improved foaming process for boards modified by recycled polypropylene materials. Background technique [0002] Polypropylene recycled material board is a board made of polypropylene (PP) recycled material through foaming processing. The cost of polypropylene recycled material board is low. Performance will decrease, such as uneven density, decreased tensile strength, increased elongation at break, decreased flexural strength, decreased notched impact strength, increased heat distortion temperature, increased molding shrinkage, etc. The general use of polypropylene recycled materials is to reduce production costs. However, polypropylene recycled materials have defects such as quality aging, poor decomposition, and impurities mixed in. Polypropylene recycled materials are very unstable and prone to prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K5/00C08K5/098C08K5/053
Inventor 张瑞洋
Owner 惠州市峄董塑胶科技有限公司
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