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Wood-plastic composite material using sweet sorghum slag as enhanced phase and preparation method for wood-plastic composite material

A kind of wood-plastic composite material and composite material technology, applied in the field of wood-plastic composite material and its preparation, to achieve the effects of light weight, low processing temperature and fast extrusion speed

Inactive Publication Date: 2012-09-26
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent also uses the thermal mixing method for dehumidification, but this patent utilizes conical twin-screws for thermal mixing at a temperature of 185-200°C

Method used

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  • Wood-plastic composite material using sweet sorghum slag as enhanced phase and preparation method for wood-plastic composite material
  • Wood-plastic composite material using sweet sorghum slag as enhanced phase and preparation method for wood-plastic composite material
  • Wood-plastic composite material using sweet sorghum slag as enhanced phase and preparation method for wood-plastic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Preparation of sweet sorghum slag wood-plastic pots by injection molding process:

[0049] Formula: parts by weight

[0050]Sweet sorghum residue 30

[0051] Recycled HDPE 70

[0052] Maleic anhydride grafted PE 4

[0053] Polyethylene wax 5

[0054] Calcium Stearate 2

[0055] Colorant 3

[0056] Antioxidant 1

[0057] Prepare sweet sorghum slag wood-plastic pots by injection molding process according to the above formula. The specific process is: crush the sweet sorghum slag, screen out 60-120 mesh sweet sorghum slag powder, and combine the alkali-oxygen method with the steam explosion method. preprocessing. The pretreated sweet sorghum slag and recycled plastics are hot-mixed and dried, and then various proportions of coupling agents, lubricants, and additives are added, and extruded and granulated by a twin-screw extruder to obtain sweet sorghum slag wood-plastic masterbatch. Then the sweet sorghum slag wood-plastic basin is obtained by injection molding wit...

Embodiment 2

[0060] Preparation of sweet sorghum slag wood-plastic four-hole plate by extrusion molding:

[0061] Formula: parts by weight

[0062] Sweet sorghum residue 70

[0063] Recycled HDPE 30

[0064] Maleic anhydride grafted PE 4

[0065] calcium carbonate 10

[0066] Polyethylene wax 5

[0067] Calcium Stearate 2

[0068] Colorant 3

[0069] Antioxidant 1

[0070] Flame retardant 3

[0071] Sweet sorghum slag wood-plastic four-hole plate was prepared by extrusion molding process according to the above formula, wherein the antioxidant was antioxidant 168, and the flame retardant was Mg(OH) 2 or Al(OH) 3 or a mixture thereof. The specific process is as follows: pulverize the sweet sorghum slag, screen the sweet sorghum slag powder of 60-120 mesh, and carry out combined pretreatment of alkali-oxygen method and steam explosion method on it. The pretreated sweet sorghum slag and recycled plastics are hot-mixed and dried, and then different proportions of fillers, coupling a...

Embodiment 3

[0073] Sweet sorghum slag wood-plastic wall prepared by extrusion molding process:

[0074] The difference between this embodiment and embodiment 2 is that the extrusion die is a large cross-section die with a cross-sectional appearance size of 600mm×120mm (length×width), and the rest are the same.

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Abstract

The invention discloses a wood-plastic composite material using sweet sorghum slag as an enhanced phase and a preparation method for the wood-plastic composite material. The wood-plastic composite material comprises 10 to 80 parts of sweet sorghum slag and 20 to 90 parts of recycled plastic, wherein the sweet sorghum slag and the recycled plastic serve as a matrix phase; and the sweet sorghum slag is subjected to combined pretreatment by an alkali-oxygen method and a steam explosion method. Sectional materials such as a sweet sorghum slag wood-plastic four-pore board, a sauna board, garden protective process, walls and the like are manufactured by extruding a fixed die and forming, or sweet sorghum slag wood-plastic products are manufactured by formation such as injection molding, pressing and the like. The sweet sorghum slag wood-plastic products can be suitable for large-scale continuous batch production and has the advantages of high performance, low cost, moth resistance, moisture resistance, no formaldehyde and the like. Compared with the conventional wood powder fillings, the wood-plastic composite material has the advantages of light weight, high performance, low cost, high extrusion speed, low processing temperature and the like, wherein the mechanical performance of the sweet sorghum slag subjected to treatment is superior to that of wood powder. The sweet sorghum slag wood-plastic composite material has good economic benefits, social benefits and ecological benefits of reducing environmental pollution, protecting forest resource and promoting economic development.

Description

technical field [0001] The invention belongs to material technology, in particular to a wood-plastic composite material with sweet sorghum slag as a reinforcing phase and a preparation method thereof. Background technique [0002] Wood-Plastic Composites (WPC for short) is made of waste wood, crop straw, etc., which are pulverized into powder, and used as raw materials together with plastic, and then added with various additives, compounded or melted by hot pressing. A high-performance, high-value-added new composite material produced by extrusion and other processing techniques. In recent years, due to the expansion of wood-plastic composite materials to various plant fiber materials, such as sweet sorghum dregs, cassava dregs, rice husks, etc. Therefore, in a broad sense, wood-plastic composite materials are a new type of composite materials formed with various plant fibers and different plastics. [0003] This material has the advantages of both plant fibers and polymer...

Claims

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Application Information

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IPC IPC(8): C08L97/02C08L23/06C08L23/10C08L25/04C08L27/06C08L55/02C08K13/02C08K3/26C08K3/34C08K5/09C08K5/098C08K5/01B29C45/00B29C47/00B29C43/00B29B9/06
Inventor 谭天伟杨霄钟京张涛
Owner BEIJING UNIV OF CHEM TECH
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