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Lignin enhanced polyvinyl chloride wood plastic foam composite material, and preparation method thereof

A polyvinyl chloride and wood-plastic foaming technology, which is applied in the field of polymer materials, can solve problems such as short service life and poor performance, and achieve the effects of improving mechanical properties, reducing water absorption, and improving compatibility

Active Publication Date: 2018-09-04
NANJING UNIV OF TECH
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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 lignin-enhanced polyvinyl chloride wood-plastic foam composite material and its preparation method to solve the problems of poor performance and short service life in the prior art

Method used

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  • Lignin enhanced polyvinyl chloride wood plastic foam composite material, and preparation method thereof
  • Lignin enhanced polyvinyl chloride wood plastic foam composite material, and preparation method thereof
  • Lignin enhanced polyvinyl chloride wood plastic foam composite material, and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Raw materials: 100 parts of polyvinyl chloride, 60 parts of bamboo powder, 20 parts of calcium carbonate, 5 parts of composite lead salt stabilizer, 2 parts of polyethylene wax, 1 part of zinc stearate, 20 parts of alkali lignin, azodicarbonamide 3 parts, 15 parts of acrylate foam regulator, 5 parts of methacrylic acid-butadiene-styrene copolymer MBS. The preparation process is the same as in Comparative Example 1.

Embodiment 2

[0048]Raw materials: 100 parts of polyvinyl chloride, 30 parts of birch powder, 20 parts of calcium sulfate, 5 parts of calcium-zinc composite stabilizer, 1 part of polyethylene wax, 1 part of microcrystalline paraffin, 15 parts of enzymatic lignin, azodicarbonamide 3 parts, 1 part of sodium bicarbonate, 12 parts of acrylate foam regulator, 7 parts of high elastic acrylonitrile-styrene-butadiene copolymer ABS. The preparation process is the same as in Comparative Example 1.

Embodiment 3

[0050] Raw materials: 100 parts of polyvinyl chloride, 50 parts of poplar wood powder, 50 parts of talc powder, 6 parts of composite lead salt stabilizer, 2 parts of polyol ester, 1 part of stearic acid, 30 parts of organic solvent lignin, titanate 4 parts of joint agent, 2 parts of azodicarbonamide, 1 part of urea, 18 parts of acrylate foam regulator, 8 parts of ethylene-vinyl acetate copolymer EVA. The preparation process is the same as in Comparative Example 1.

[0051] The interfacial bonding between lignocellulose and polymer matrix is ​​a key factor affecting the performance of composite materials. figure 1 It is the SEM picture of the product in the comparative example and the product of this embodiment, showing the interface bonding status of the two. In figure a, there is a large gap between the interfaces of wood-plastic composite materials; in figure b, after adding lignin, lignin has a certain grafting effect, which solves the compatibility problem between wood fl...

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Abstract

The invention discloses a lignin enhanced polyvinyl chloride wood plastic foam composite material, and a preparation method thereof. The lignin enhanced polyvinyl chloride wood plastic foam compositematerial is composed of, by weight, 100 parts of polyvinyl chloride, 10 to 200 parts of wood fiber powder, 2 to 200 parts of an inorganic powder, 1 to 20 parts of a stabilizing agent, 1 to 10 parts ofa lubricant, 5 to 80 parts of lignin, 1 to 8 parts of a compatilizer, 1 to 10 parts of a foaming agent, 8 to 25 parts of a foaming conditioning agent, and 0.5 to 10 parts of a reinforcing agent. Compared with the prior art, the preparation method comprises following advantages: lignin enhancing technology is combined with micropore foaming technology, so that material lightweighting is ensured, and the plasticizing performance, the flame resistance, the ultraviolet resistance, the aging resistance, the biological resistance, the radiation resistance, and rheological performance, the screw extrusion performance, and the heat resistance of the lignin enhanced polyvinyl chloride wood plastic foam composite material are improved obviously, product surface gloss is improved, product water absorption performance is reduced, and the high performance lignin enhanced polyvinyl chloride wood plastic foam composite material with lightweighting characteristics is obtained.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a lignin-enhanced polyvinyl chloride wood-plastic foam composite material and a preparation method thereof. Background technique [0002] Wood-plastic composite materials are modified thermoplastic materials filled and reinforced with wood fibers or plant fibers, and extruded or pressed profiles, plates or other products. It has similar texture and properties to wood (can be sawed, planed, nailed, bent and bonded), and at the same time overcomes the poor dimensional stability of wood, flammability, moisture, perishability, moth, and mildew, etc. It also avoids the shortcomings of simple resin materials such as high-temperature creep and low-temperature brittleness. However, due to the poor compatibility of lignocellulose and polyvinyl chloride, the mechanical properties of polyvinyl chloride wood-plastic composite materials are reduced, and the density of rigid polyv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L97/02C08L97/00C08J9/10C08J9/08
CPCC08J9/08C08J9/103C08J2497/00C08J2497/02C08J2327/06C08J2203/04C08J2203/02
Inventor 朱晨杰张晓应汉杰仲凌霞唐成伦陈勇牛欢青柳东吴菁岚
Owner NANJING UNIV OF TECH
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