CN103642147A - Composite wood plastic material - Google Patents

Abstract

The invention discloses a composite wood plastic material, which is composed of the following raw materials by weight: 90-100 parts of PVC resin, 90-100 parts of wood fibre, 10-15 parts of light calcium carbonate, 7-10 parts of thermoplastic polyurethane elastomer, 1-2 parts of dicumyl peroxide, 3-4 parts of chlorinated paraffin, 1-2 parts of tribasic lead sulphate, 3-5 parts of barium ricinoleate, 2-3 parts of azodicarbonamide and 3-4 parts of bonding auxiliary agents. The wood plastic composite provided by the invention contains plastic and fiber, and has the advantages of good processing performance and strength, anti-acid-base corrosion, high and low temperature resistance, etc., and the product is formed by foaming agents, thereby enhancing strength of wood plastic material with age proof performance.

Description

A kind of wood plastic composite

Technical field

The present invention relates generally to a kind of matrix material, relates in particular to a kind of wood plastic composite.

Background technology

Wood plastic composite is the class advanced composite material being in recent years surging forward both at home and abroad, refer to utilize polyethylene, polypropylene and polyvinyl chloride etc., replace common resin adhesive, be mixed into new wood materials with useless vegetable fibres such as surpassing more than 50% wood powder, rice husk, stalk, again through the plastic processings such as extruding, mold pressing, injection molding, the sheet material of producing or section bar.Be mainly used in the industries such as building materials, furniture, logistics packaging.Plastics and wooden powder are mixed to the sheet material by hot extrusion molding by a certain percentage, be referred to as to push wood-plastic composite panel.

Summary of the invention

The object of the invention is just to provide a kind of wood plastic composite.

The present invention is achieved by the following technical solutions:

A wood plastic composite, it is comprised of the raw material of following weight parts:

Polyvinyl chloride resin 90-100, wood fibre 90-100, light calcium carbonate 10-15, Polyurethane Thermoplastic Elastomer 7-10, dicumyl peroxide 1-2, clorafin 3-4, lead sulfate tribasic 1-2, ricinolic acid barium 3-5, Cellmic C 121 2-3, adhesive aid 3-4;

Described adhesive aid is comprised of the raw material of following weight parts:

Polyvinyl alcohol 15-20, hexamethoxymethyl melamine resin 3-4, polyamide wax micropowder 2-3, dialdehyde starch 4-5, Jojoba oil 1-2, anilinomethyl triethoxysilane 1-2;

Above-mentioned polyvinyl alcohol is joined in reactor, be heated to 70-80 ℃, add polyamide wax micropowder, insulation reaction 4-5 minute, reduction temperature is 50-60 ℃, adds hexamethoxymethyl melamine resin, anilinomethyl triethoxysilane, 600-700 rev/min of dispersed with stirring 10-15 minute, be cooled to normal temperature, add each raw material of residue, fully mixing obtains described adhesive aid.

A preparation method for wood plastic composite, comprises the following steps:

Above-mentioned wood fibre is sent in homogenizer, rising temperature is 100-120 ℃, under the rotating speed of 1000-1200 rev/min of stirring, slowly add dicumyl peroxide, after interpolation, continue high-speed stirring 5-8 minute, reduction temperature is 80-90 ℃, add polyvinyl chloride resin, clorafin, light calcium carbonate, Polyurethane Thermoplastic Elastomer, after fully stirring, in temperature, be at 110-115 ℃, add Cellmic C 121, high-speed stirring is even, be cooled to normal temperature, add each raw material of residue, after fully mixing, send into forcing machine, extrusion moulding, cooling and shaping, obtain described wood plastic composite.

Advantage of the present invention is:

Wood plastic composite of the present invention includes plastics and fiber, has good processing characteristics and higher intensity, and the superior performances such as antiacid caustic corrosion, high-low temperature resistant, by the whipping agent processing of foaming, have strengthened the intensity of Wood-plastic material, have improved ageing resistance.

Embodiment

Embodiment 1

A wood plastic composite, it by following weight parts (kilogram) raw material form:

Polyvinyl chloride resin 100, wood fibre 100, light calcium carbonate 10, Polyurethane Thermoplastic Elastomer 10, dicumyl peroxide 2, clorafin 4, lead sulfate tribasic 1, ricinolic acid barium 3, Cellmic C 121 2, adhesive aid 3;

Described adhesive aid is comprised of the raw material of following weight parts:

Polyvinyl alcohol 20, hexamethoxymethyl melamine resin 3, polyamide wax micropowder 2, dialdehyde starch 4-5, Jojoba oil 2, anilinomethyl triethoxysilane 1;

Above-mentioned polyvinyl alcohol is joined in reactor, be heated to 80 ℃, add polyamide wax micropowder, insulation reaction 4 minutes, reducing temperature is 60 ℃, adds hexamethoxymethyl melamine resin, anilinomethyl triethoxysilane, 700 revs/min of dispersed with stirring 15 minutes, be cooled to normal temperature, add each raw material of residue, fully mixing obtains described adhesive aid.

A preparation method for wood plastic composite, comprises the following steps:

Above-mentioned wood fibre is sent in homogenizer, rising temperature is 120 ℃, under the rotating speed of 1200 revs/min of stirrings, slowly add dicumyl peroxide, after interpolation, continue high-speed stirring 8 minutes, reducing temperature is 90 ℃, add polyvinyl chloride resin, clorafin, light calcium carbonate, Polyurethane Thermoplastic Elastomer, after fully stirring, in temperature, be at 115 ℃, add Cellmic C 121, high-speed stirring is even, be cooled to normal temperature, add each raw material of residue, after fully mixing, send into forcing machine, extrusion moulding, cooling and shaping, obtain described wood plastic composite.

Performance test:

Freeze-thaw resistance: flexural failure load retention rate is 88%;

Flexural failure load: 3760N;

Normal temperature lands impact: pit diameter is 7.4mm;

Low temperature ball falling impact :-10 ℃, flawless;

Thickness swelling rate (normal-temperature water is soaked 1 hour): 0.86%;

Creep recovery rate: 78%.

Claims (2)

1. a wood plastic composite, is characterized in that it is comprised of the raw material of following weight parts:

Polyvinyl chloride resin 90-100, wood fibre 90-100, light calcium carbonate 10-15, Polyurethane Thermoplastic Elastomer 7-10, dicumyl peroxide 1-2, clorafin 3-4, lead sulfate tribasic 1-2, ricinolic acid barium 3-5, Cellmic C 121 2-3, adhesive aid 3-4;

Described adhesive aid is comprised of the raw material of following weight parts:

Polyvinyl alcohol 15-20, hexamethoxymethyl melamine resin 3-4, polyamide wax micropowder 2-3, dialdehyde starch 4-5, Jojoba oil 1-2, anilinomethyl triethoxysilane 1-2;

Above-mentioned polyvinyl alcohol is joined in reactor, be heated to 70-80 ℃, add polyamide wax micropowder, insulation reaction 4-5 minute, reduction temperature is 50-60 ℃, adds hexamethoxymethyl melamine resin, anilinomethyl triethoxysilane, 600-700 rev/min of dispersed with stirring 10-15 minute, be cooled to normal temperature, add each raw material of residue, fully mixing obtains described adhesive aid.

2. a preparation method for wood plastic composite as claimed in claim 1, is characterized in that comprising the following steps:

Above-mentioned wood fibre is sent in homogenizer, rising temperature is 100-120 ℃, under the rotating speed of 1000-1200 rev/min of stirring, slowly add dicumyl peroxide, after interpolation, continue high-speed stirring 5-8 minute, reduction temperature is 80-90 ℃, add polyvinyl chloride resin, clorafin, light calcium carbonate, Polyurethane Thermoplastic Elastomer, after fully stirring, in temperature, be at 110-115 ℃, add Cellmic C 121, high-speed stirring is even, be cooled to normal temperature, add each raw material of residue, after fully mixing, send into forcing machine, extrusion moulding, cooling and shaping, obtain described wood plastic composite.