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Formula and preparation method of outdoor PVC wood plastic grille

A PVC resin powder and wood-plastic technology, applied in the field of wood-plastic composite materials, can solve problems such as poor compatibility and interface adhesion, poor durability of natural plant fibers, and difficulty in meeting actual needs, achieving good aging resistance and saving energy. Resources, easy-to-process effects

Active Publication Date: 2015-06-10
山东宜居新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the high hydrophilicity and polarity of natural plant fibers, the compatibility and interfacial adhesion between natural plant fibers and non-polar plastic base materials are poor during application. Lignin, hemicellulose and other components that are prone to photodegradation and hydrolysis are prone to problems such as fading, aging, water absorption and growth of fungi when exposed to sunlight, which makes the durability of natural plant fibers poor in actual use. If it is used for a long time, especially in the open air, it is prone to cracking, fading and other aging phenomena, which shortens its service life and limits its use range, and it is difficult to meet the actual needs of high-strength, high-modulus, and weather-resistant structural composite materials for outdoor applications.

Method used

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  • Formula and preparation method of outdoor PVC wood plastic grille

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Weigh raw materials according to the following weight ratio:

[0065] PVC resin powder: 100 parts;

[0066] Partial carbonized wood fiber powder: 20 parts;

[0067] Calcium filler: 45 parts;

[0068] UV absorber: 0.5 parts;

[0069] Stabilizer: 3 parts;

[0070] Antioxidant: 0.4 parts;

[0071] PE wax: 1.2 parts;

[0072] Stearic acid: 0.8 part;

[0073] Foam regulator: 6 parts;

[0074] Foaming agent: 1.2 parts.

[0075] Then use the following methods to prepare wood-plastic panels:

[0076] 1) Mix lignocellulosic powder with hydrogen peroxide whose mass is 5% of lignocellulosic powder, mix evenly, put into vacuum mixing device, then heat up to 190°C, vacuumize, and mix for 30 minutes;

[0077] 2) Add calcium filler with a mass of 30% of the formula quantity, mix well, add PE wax and stearic acid in sequence, then cool down to 150°C, add PVC resin powder, stabilizer, foam regulator, and foaming agent in sequence , the remaining amount of calcium filler, mix e...

Embodiment 2

[0080] Weigh raw materials according to the following weight ratio:

[0081] PVC resin powder: 100 parts;

[0082] Partial carbonized wood fiber powder: 30 parts;

[0083] Calcium filler: 50 parts;

[0084] UV absorber: 0.6 parts;

[0085] Stabilizer: 5 parts;

[0086] Antioxidant: 0.4 parts;

[0087] PE wax: 1.2 parts;

[0088] Stearic acid: 0.8 part;

[0089] Foam regulator: 6 parts;

[0090] Foaming agent: 1.0 parts.

[0091] Then use the following methods to prepare wood-plastic panels:

[0092] 1) Mix lignocellulosic powder with hydrogen peroxide whose mass is 15% of lignocellulosic powder, mix evenly, put into vacuum mixing device, then heat up to 190°C, vacuumize, and mix for 25 minutes;

[0093] 2) Add calcium filler with a mass of 30% of the formula quantity, mix well, add PE wax and stearic acid in sequence, then cool down to 150°C, add PVC resin powder, stabilizer, foam regulator, and foaming agent in sequence , the remaining amount of calcium filler, mix ...

Embodiment 3

[0096] Weigh raw materials according to the following weight ratio:

[0097] PVC resin powder: 100 parts;

[0098] Partial carbonized wood fiber powder: 40 parts;

[0099] Calcium filler: 60 parts;

[0100] UV absorber: 0.8 parts;

[0101] Stabilizer: 6 parts;

[0102] Antioxidant: 0.6 parts;

[0103] PE wax: 1.3 parts;

[0104] Stearic acid: 0.5 parts;

[0105] Foam regulator: 8 parts;

[0106] Foaming agent: 1.5 parts.

[0107] Then use the following methods to prepare wood-plastic panels:

[0108] 1) Mix wood fiber powder with hydrogen peroxide whose mass is 2% of wood fiber powder, mix evenly, put into vacuum mixing device, then heat up to 180°C, vacuumize, and mix for 15 minutes;

[0109] 2) Add calcium filler with a mass of 20% of the formula quantity, mix well, add PE wax and stearic acid in sequence, then cool down to 130°C, add PVC resin powder, stabilizer, foam regulator, and foaming agent in sequence , the remaining amount of calcium filler, mix evenly, fi...

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Abstract

The invention relates to a PVC wood plastic grille which can be used at outdoors. The PVC wood plastic grille contains a partially carbonized wood fiber powder which not only can be used as wood in the wood plastic material but also can be used as a reinforcing phase, so that the wood plastic grille has the advantages of high strength, high hardness, good aging resistance, good stability and easy processing, can save resources, and can be recycled 100% after being used for a plurality of years. In addition, a preparation method of the outdoor PVC wood plastic grille is simple; a wood fiber powder is only subjected to simple hydrogen peroxide wetting treatment and high temperature mechanical mixing, and thus the partially carbonized wood fiber powder can be obtained; then through material mixing processes according to a certain order, a wood plastic raw material with even mixing and compact interfacial bonding can be obtained; and finally the wood plastic grille having excellent performance and suitable for outdoor application is prepared. The production process is simple, operations are easy, and the production efficiency is high.

Description

technical field [0001] The invention relates to a wood-plastic composite material, in particular to a PVC wood-plastic grid and a preparation method thereof. Background technique [0002] With the improvement of people's awareness of environmental protection and energy saving, they are no longer satisfied with the wood waste of solid wood flooring and the high formaldehyde release of laminate flooring. There is an urgent need for a new type of building material that is energy-saving, low-cost, and easy-to-care. Wood-plastic composite material is a new type of material. It is made by mixing processed waste wood, sawdust, crop straw, and nut shells with thermoplastic materials in a certain proportion and treated with high temperature and high pressure. It has acid and alkali resistance. Will rot and other advantages. In recent years, with the enhancement of people's awareness of environmental protection, more and more people pay attention to wood-plastic composite materials t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L97/02C08K5/09C08K3/26C08K5/134C08J9/10
Inventor 赵悦英杨明顾元喆
Owner 山东宜居新材料科技有限公司
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