PVC (Polyvinyl Chloride)-lignin-sulfate wood-plastic composite material and preparation method thereof

A wood-plastic composite material and lignin technology, which is applied in the field of PVC-lignin-sulfate wood-plastic composite material and its preparation, can solve the problems of insufficient utilization of lignin and poor performance of wood-plastic materials, and achieve Effects of improving mechanical properties, improving toughness, and improving compatibility

Inactive Publication Date: 2018-08-10
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a PVC-lignin-sulphate wood-plastic composite material and its preparation method, so as to solve the problems of insufficient utilization of lignin and poor performance of wood-plastic materials in the prior art And other issues

Method used

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  • PVC (Polyvinyl Chloride)-lignin-sulfate wood-plastic composite material and preparation method thereof
  • PVC (Polyvinyl Chloride)-lignin-sulfate wood-plastic composite material and preparation method thereof
  • PVC (Polyvinyl Chloride)-lignin-sulfate wood-plastic composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Raw materials: 20 parts of dried wood flour, 100 parts of PVC, 25 parts of calcium sulfate whiskers, 20 parts of alkali lignin, 6 parts of composite calcium zinc stabilizer, 0.7 parts of calcium stearate, 0.8 parts of polyethylene wax, 2 parts Dioctyl phthalate, 8 parts chlorinated polyethylene, 5 parts azodicarbonamide, 12 parts foam regulator

[0056] Manufacturing method process is the same as comparative example 1

Embodiment 2

[0058] Raw materials: 60 parts of dried corn stalk powder, 100 parts of PVC, 25 parts of anhydrous zinc sulfate, 80 parts of enzymatic lignin, 8 parts of composite lead stabilizer, 1 part of calcium stearate, 1.8 parts of polyethylene wax, 6 Dioctyl phthalate, 9 parts chlorinated polyethylene, 5 parts azodicarbonamide, 16 parts foam regulator

[0059] The manufacturing method includes the following processes:

[0060] (1) Mix raw materials. Mixing is divided into two stages: hot mixing and cold mixing. First, heat mixing. According to the proportion, add each raw material to a high-speed mixer and mix at high speed (800rpm) until the temperature reaches 120°C, and then mix at a low speed (200rpm). When the temperature is lower than 90°C, the material is discharged;

[0061] (2) Extrude the profile, add the mixed material into the conical twin-screw extruder, and a mold with a specific shape is installed at the outlet of the screw mouth. The material is in a molten state under...

Embodiment 3

[0063] Raw materials: 20 parts of dried bamboo powder, 100 parts of PVC, 20 parts of anhydrous magnesium sulfate, 100 parts of enzymatic lignin, 7 parts of organotin stabilizers, 1 part of polyol ester, 2 parts of polyethylene wax, 3 parts Petroleum ester, 9 parts of methacrylic acid-butadiene-styrene copolymer MBS, 5 parts of azodicarbonamide, 3 parts of sodium bicarbonate, 14 parts of foam regulator

[0064] Manufacturing method technology is the same as embodiment 2

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Abstract

The invention discloses a PVC (Polyvinyl Chloride)-lignin-sulfate wood-plastic composite material and a preparation method thereof and belongs to the field of high molecular composite materials. The wood-plastic composite material is prepared from one or more of plant fibers, lignin, sulfate, PVC, a thermal stabilizer, a lubricant, a plasticizer, an anti-impact modifier, a coupling agent, a foaming agent and a foaming regulator, and is extruded and processed through a screw rod. Compared with the prior art, the lignin and the sulfate are added into the wood-plastic composite material at the same time, the flowability is improved and the mutual effect between molecules is improved, so that the filling amount of the plant fibers is improved, and the mechanical property, thermal stability property, and anti-ultraviolet, anti-ageing and bacterium corrosion resisting properties of the wood-plastic composite material are improved.

Description

technical field [0001] The invention belongs to the composite field of polymer materials, and in particular relates to a PVC-lignin-sulfate wood-plastic composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite materials are processed from thermoplastics and plant fiber powder, and are widely used in garden landscape outdoor products, indoor doors and windows and decorative materials, and house foundation parts bearing wood-plastic products. Wood-plastic micro-foaming is one of the current research hotspots. The use of micro-foaming can effectively prevent the expansion of original cracks in the material and make the crack tip blunt, so it can improve impact strength, toughness, fatigue cycle, thermal stability, etc. Significant improvement, that is, it can overcome the defects of physical machinery and other aspects, and greatly improve the usability of materials. At present, the inorganic fillers in PVC wood-plastic composit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L97/02C08L97/00C08L23/28C08K13/04C08K7/08C08K5/098C08K5/12C08K3/30C08J9/10
CPCC08J9/103C08J2203/04C08J2327/06C08J2397/00C08J2497/00C08J2497/02C08K7/08C08K2003/3045C08K2003/3063
Inventor 朱晨杰仲凌霞应汉杰张晓唐成伦陈勇牛欢青柳东吴菁岚
Owner NANJING TECH UNIV
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