Preparation method for producing nano composite PVC (polyvinyl chloride) sheet by using waste PVC

A composite, nano-technology, applied in applications, household appliances, flat products, etc., can solve the problems of high toxicity of new PVC materials, short service life of PVC sheets, insufficient decomposition, etc., to achieve rich raw materials, good mildew resistance, Good thermosetting effect

Inactive Publication Date: 2016-08-17
GUANGDE TIANYUN NEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] And the waste PVC materials that will be recycled to produce new PVC sheets are easy to produce unattractive appearance, and more raw materials after aging will lead to a short service life of new PVC sheets, and due to insufficient decomposition of raw materials in the production process Thoroughly, so it will cause the new PVC material to be more toxic, so the quality cannot reach the quality of the original material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Firstly, waste PVC material is prepared, that is, 58 parts by weight of waste PVC material are washed with warm water at 30°C, filtered after cleaning, dried for 10 minutes, and heated to 50°C to soften, and the softened material is subjected to fluorescence Sterilize, transfer to pulverizer and pulverize;

[0025] Secondly, masticating and banburying, about 10 parts by weight of glass fiber, 38 parts of poly(3-hydroxybutyrate-co-4-hydroxybutyrate), 47 parts of random copolymerized polypropylene, styrene-butadiene Add 37 parts of copolymer, carbon fiber, boron fiber, whisker, asbestos fiber and metal fiber, and 37 parts by weight of polyolefin resin to the internal mixer for mastication and mixing, and after internal mixing for 6 hours, add to the internal mixer The waste PVC material after the aforementioned pulverization continues banburying for 50 hours, continues to add 22 parts by weight of benzoxazine in the banbury mixer, and after continuing banburying for 10 ho...

Embodiment 2

[0029] Firstly, waste PVC material is prepared, that is, 58 parts by weight of waste PVC material are washed with warm water at 32°C, filtered after cleaning, dried for 15 minutes, and heated to 55°C to soften, and the softened material is subjected to fluorescence Sterilize, transfer to pulverizer and pulverize;

[0030] Secondly, masticating and banburying, about 10 parts by weight of glass fiber, 38 parts of poly(3-hydroxybutyrate-co-4-hydroxybutyrate), 47 parts of random copolymerized polypropylene, styrene-butadiene Add 37 parts of copolymer and 37 parts by weight of polyolefin resin to the internal mixer for masticating and mixing, and after banburying for 4 hours, add the aforementioned crushed waste PVC material to the banbury mixer and continue banburying for 50 hours. Add 22 parts by weight of benzoxazine in the internal mixer, continue banburying for 10h, add the HDPE graft copolymer of 8 parts by weight, the hindered phenolic antioxidant of 1.5 parts by weight in t...

Embodiment 3

[0034] Firstly, waste PVC material is prepared, that is, 58 parts by weight of waste PVC material are washed with warm water at 35°C, filtered after cleaning, dried for 14 minutes, and heated to 58°C to soften, and the softened material is subjected to fluorescence Sterilize, transfer to pulverizer and pulverize;

[0035] Secondly, masticating and banburying, about 10 parts by weight of glass fiber, 38 parts of poly(3-hydroxybutyrate-co-4-hydroxybutyrate), 47 parts of random copolymerized polypropylene, styrene-butadiene Add 37 parts of copolymer, metal fiber and 37 parts by weight of polyolefin resin to the internal mixer for mastication and mixing, and after banburying for 3 hours, add the above-mentioned crushed waste PVC material to the banbury mixer to continue banburying 50h, continue to add 22 parts by weight of benzoxazine in the internal mixer, after continuing to carry out internal mixing for 10h, add the silane cross-linked polyolefin copolymer that is 8 parts by we...

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PUM

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Abstract

The invention discloses a preparation method for producing a nano composite PVC (polyvinyl chloride) sheet by using waste PVC. The preparation method is characterized by comprising the following steps: (1) preparing a waste PVC material; (2) plastifying and internally mixing; (3) mixing and extruding the material plastified and internally mixed in the step (2) via a screw extruder; and (4) molding, carrying out operations of calendering the sheet and cutting the material mixed and extruded in the step (3) via a silk roller calendar; and taking a lifter and a conveying belt as intermediate connection structures to form a complete nano composite PVC sheet produced by the waste PVC. Through the preparation method for producing the nano composite PVC sheet by using waste PVC, the product has excellent heat resistance and flame resistance, free of release of micro molecules in the curing process, nearly free of curing shrinkage ratio, large in modulus, high in strength, rich in raw materials, low in cost, easy to process and mold and excellent in overall performance; and the product produced by the method has nano-sized multifunctional modification, so that the product has a better thermocuring effect.

Description

technical field [0001] The invention relates to the technical field of sheet production, in particular to a preparation method for producing nanocomposite PVC sheets from waste PVC. Background technique [0002] PVC material is widely used because of its good processing performance, flex crack resistance and strong corrosion resistance. Due to the substantial increase in the cost of raw materials in the PVC industry in recent years, PVC manufacturers must start with reducing raw materials in order to reduce production costs and improve economic benefits. [0003] And the waste PVC materials that will be recycled to produce new PVC sheets are easy to produce unattractive appearance, and more raw materials after aging will lead to a short service life of new PVC sheets, and due to insufficient decomposition of raw materials in the production process Thoroughly, so it will cause the new PVC material to be more toxic, so the quality cannot reach the quality of the original mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L67/04C08L23/14C08L25/10C08L23/02C08L51/06C08L23/08C08L63/00C08L91/06C08K13/04C08K7/14C08K7/06C08K7/12C08K3/04C08K5/12C08K5/357B29D7/01
CPCC08L27/06B29D7/01C08L2201/02C08L2201/08C08L2205/02C08L2205/035C08L2207/20C08L67/04C08L23/14C08L25/10C08L23/02C08L51/06C08L23/08C08L63/00C08L91/06C08K13/04C08K7/14C08K7/06C08K7/12C08K3/04C08K5/12C08K5/357
Inventor 潘建新张陆贤
Owner GUANGDE TIANYUN NEW TECH
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