CN105111616A - Wood-plastic decorative building material - Google Patents

Abstract

The invention discloses a wood-plastic decorative building material which is prepared from the following raw materials in parts by weight: 100-105 parts of polyvinyl chloride, 15-18 parts of kaolin, 30-35 parts of wood meal, 5-7 parts of carbonyl powder, 0.8-1.2 parts of chalcanthite, 4-6 parts of nitrile-butadiene rubber, 0.2-0.4 part of titanate coupling agent NDZ-201, 0.4-0.6 part of silane coupling agent YH62, 4-5 parts of dimethyl silicone oil, 4-5 parts of shell powder, 2-3 parts of barium stearate and 5-6 parts of vapor-phase white carbon black. The wood-plastic material disclosed by the invention has the advantages of favorable appearance, favorable decorative effect, energy saving, lower environmental pollution, favorable product dimension stability, favorable aging resistance and light weight, and has wide application range when being used as a decorative building material.

Description

A kind of wood plastic decorative construction material

Technical field

The present invention relates to wood plastic composite technical field, particularly relate to a kind of wood plastic decorative construction material.

Background technology

As far back as last century, the forties people just find paracril and pvc and are studied by technology, paracril has certain polarity, with the solubility parameter of pvc closely, they are amorphous polymers, there is good consistency between the two, therefore usual that they are blended, obtained alloy material has excellent weathering resistance, solvent resistance and good mechanical strength and processing characteristics, is widely used in the fields such as sealing member, electric wire and cable jacket, oil pipe.The alloy material of paracril and polyvinyl chloride is divided into cross-linking type and non-crosslinked type, and the alloy of cross-linking type is insoluble not to be melted, and is difficult to regeneration, causes severe contamination to environment, although and noncrosslinking alloy processing characteristics is better, mechanical property is undesirable.

China is the country that a timber does not enrich, and underproducely causes the demand that can not meet market.Enhancing along with environmental consciousness and the protection to trees, wood plastic composite swarms into the visual field of people gradually, and Wood-plastic material is that one wood powder, xylon or other vegetable fibre fill thermoplastic polymer composite material, has the advantage of timber and plastics concurrently.But existing Wood-plastic material is also difficult to the performance requriements meeting market, and its erosion-resisting characteristics is poor, and especially shock strength sharply declines along with the increase of wood powder content, is difficult to the requirement meeting premium quality product.The polarity of wood powder is very strong, and the consistency between it and thermoplastics is poor, have impact on the mechanical property of matrix material greatly.Kaolin has obtained fine application as a kind of important reinforcing filler or functional filler in plastics and various rubber materials.On the one hand, kaolin output is large, price is low, with polymer-based carbon volume recombination, can significantly reduce plastics cost, on the other hand, kaolinic interpolation, the thermostability of polymer composites, hardness, rigidity can be improved and give material some special physicals, but the raw ore kaolin of directly exploitation at present, and particle size is little, surface energy is high, easy reunion, surface is containing hydrophilic hydroxy group and oxy radical, totally different with macromolecular material interface, poor compatibility, is difficult to dispersed.Therefore need to carry out modification to the interface of wood powder and plastics, to improve the consistency between them, and will process kaolin surface, improve the poor compatibility with macromolecular material interface, make the performance of dispersed raising matrix material.

Summary of the invention

The object of the invention is exactly the defect in order to make up prior art, provides a kind of wood plastic decorative construction material.

The present invention is achieved by the following technical solutions:

A kind of wood plastic decorative construction material, is made up of the raw material of following weight part: polyvinyl chloride 100-105, kaolin 15-18, wood powder 30-35, carbonyl iron dust 5-7, cupric sulfate pentahydrate 0.8-1.2, paracril 4-6, titanate coupling agent NDZ2010.2-0.4, silane coupling agent YH620.4-0.6, dimethyl silicone oil 4-5, oyster shell whiting 4-5, barium stearate 2-3, gas-phase silica 5-6;

2, thoroughly do away with a kind of wood plastic decorative construction material described in claim 1, be made up of following concrete steps:

(1) titanate coupling agent NDZ201 and 90% aqueous isopropanol are configured to coupling agent solution according to 1:2, are repeatedly added drop-wise in the kaolin of high-speed stirring, after stirring under 100 ° of C vacuum-drying 3-5h and at room temperature place 24h for subsequent use;

(2) cupric sulfate pentahydrate was refined on ball mill 100 mesh sieves for subsequent use, then by paracril first thin-pass 3-5 time in two roller mill, add copper sulfate for subsequent use several times again, continue mixing 10-15 minute, be added in micropulverizer together with the kaolin prepared with step (1) after softening and stir 2-3min, kaolin is wrapped by completely, for subsequent use after cooling;

(3) wood powder is added in acetone stir 7h after carry out suction filtration, under 120 ° of C, constant weight is dried to after end, silane coupling agent YH62 is added the ethanolic soln of 95% according to the ratio of 1:3, wood powder is added after stirring, after high-speed mixing 5-7min, add carbonyl iron dust to continue to stir 3-5min, finally put into baking oven and dry 1-1.5h under 120 ° of C, for subsequent use after cooling;

(4) material prepared by step (2) and step (3) is added in high-speed mixer mixes, then add discharging after polyvinyl chloride (PVC) RESINS and other leftover materials high-speed mixing 8-10min, be cooled to room temperature, obtained dry blend;

(5) add in twin screw extruder by the dry blend that step (4) is obtained, optimum configurations is rotating speed 20r/min, and extrusion temperature is 168 ° of C, 178 ° of C, 175 ° of C, 168 ° of C and 185 ° C, and extrusion moulding can obtain wood plastic composite.

Advantage of the present invention is: the present invention adopts titanate coupling agent process kaolin, hydrophilic radical and the kaolin surface hydroxyl reaction of titanate coupling agent form covalent linkage, kaolin oleophilic drainage is made to become the characteristic of oleophilic drainage, itrile group in paracril and cupric ion occur coordination cross-linked under heat, material after crosslinked is not only at high temperature reversible, recoverable and pollution-free, and there is the character of thermoplastics, the strength of materials can be improved, the present invention is coated on kaolin surface, add in Wood-plastic material and can greatly improve its high pressure, high-strength, the characteristic of high-ductility, wood powder can increase the surface compatability with pvc by coupling processing, and mix with carbonyl iron dust and improves further its dispersiveness, and the wear resistance of material can also be improved, the performances such as intensity, the oyster shell whiting added and gas-phase silica cooperatively interact and greatly improve the antibacterial bacteriostatic of Wood-plastic material, the characteristic of the aspects such as weather-proof reinforcement, Wood-plastic material prepared by the present invention has good outward appearance, good decorating effect, save energy, reduce environmental pollution, product size good stability, ageing-resistant performance is good, material is light, as building and ornament materials, there is good Application Areas.

Embodiment

A kind of wood plastic decorative construction material, is made up of the raw material of following weight part (kilogram): polyvinyl chloride 100, kaolin 15, wood powder 30, carbonyl iron dust 5, cupric sulfate pentahydrate 0.8, paracril 4, titanate coupling agent NDZ2010.2, silane coupling agent YH620.4, dimethyl silicone oil 4, oyster shell whiting 4, barium stearate 2, gas-phase silica 5;

2, thoroughly do away with a kind of wood plastic decorative construction material described in claim 1, be made up of following concrete steps:

(1) titanate coupling agent NDZ201 and 90% aqueous isopropanol are configured to coupling agent solution according to 1:2, are repeatedly added drop-wise in the kaolin of high-speed stirring, after stirring under 100 ° of C vacuum-drying 3h and at room temperature place 24h for subsequent use;

(2) cupric sulfate pentahydrate was refined on ball mill 100 mesh sieves for subsequent use, then by paracril first thin-pass 3 times in two roller mill, add copper sulfate for subsequent use several times again, continue mixing 10 minutes, be added in micropulverizer together with the kaolin prepared with step (1) after softening and stir 2min, kaolin is wrapped by completely, for subsequent use after cooling;

(3) wood powder is added in acetone stir 7h after carry out suction filtration, under 120 ° of C, constant weight is dried to after end, silane coupling agent YH62 is added the ethanolic soln of 95% according to the ratio of 1:3, wood powder is added after stirring, after high-speed mixing 5min, add carbonyl iron dust to continue to stir 3min, finally put into baking oven and dry 1h under 120 ° of C, for subsequent use after cooling;

(4) material prepared by step (2) and step (3) is added in high-speed mixer mixes, then add discharging after polyvinyl chloride (PVC) RESINS and other leftover materials high-speed mixing 8min, be cooled to room temperature, obtained dry blend;

(5) add in twin screw extruder by the dry blend that step (4) is obtained, optimum configurations is rotating speed 20r/min, and extrusion temperature is 168 ° of C, 178 ° of C, 175 ° of C, 168 ° of C and 185 ° C, and extrusion moulding can obtain wood plastic composite.

According to wood plastic composite prepared by embodiment, carry out performance test to it, result is as follows:

Tensile strength is 38.3MPa, and shock strength is 52.7KJ/m2, and elongation at break is 3.3%, and flexural strength is at 17.3MPa, and water-intake rate is 0.7%, and percent thermal shrinkage is 0.4%.

Claims (2)

1. a wood plastic decorative construction material, it is characterized in that, be made up of the raw material of following weight part: polyvinyl chloride 100-105, kaolin 15-18, wood powder 30-35, carbonyl iron dust 5-7, cupric sulfate pentahydrate 0.8-1.2, paracril 4-6, titanate coupling agent NDZ2010.2-0.4, silane coupling agent YH620.4-0.6, dimethyl silicone oil 4-5, oyster shell whiting 4-5, barium stearate 2-3, gas-phase silica 5-6.

2. a kind of wood plastic decorative construction material according to claim 1, is characterized in that, be made up of following concrete steps:

(1) titanate coupling agent NDZ201 and 90% aqueous isopropanol are configured to coupling agent solution according to 1:2, are repeatedly added drop-wise in the kaolin of high-speed stirring, after stirring under 100 ° of C vacuum-drying 3-5h and at room temperature place 24h for subsequent use;

(2) cupric sulfate pentahydrate was refined on ball mill 100 mesh sieves for subsequent use, then by paracril first thin-pass 3-5 time in two roller mill, add copper sulfate for subsequent use several times again, continue mixing 10-15 minute, be added in micropulverizer together with the kaolin prepared with step (1) after softening and stir 2-3min, kaolin is wrapped by completely, for subsequent use after cooling;

(3) wood powder is added in acetone stir 7h after carry out suction filtration, under 120 ° of C, constant weight is dried to after end, silane coupling agent YH62 is added the ethanolic soln of 95% according to the ratio of 1:3, wood powder is added after stirring, after high-speed mixing 5-7min, add carbonyl iron dust to continue to stir 3-5min, finally put into baking oven and dry 1-1.5h under 120 ° of C, for subsequent use after cooling;

(4) material prepared by step (2) and step (3) is added in high-speed mixer mixes, then add discharging after polyvinyl chloride (PVC) RESINS and other leftover materials high-speed mixing 8-10min, be cooled to room temperature, obtained dry blend;

(5) add in twin screw extruder by the dry blend that step (4) is obtained, optimum configurations is rotating speed 20r/min, and extrusion temperature is 168 ° of C, 178 ° of C, 175 ° of C, 168 ° of C and 185 ° C, and extrusion moulding can obtain wood plastic composite.