CN101864130B - PVC plastic-wood material - Google Patents

PVC plastic-wood material Download PDF

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Publication number
CN101864130B
CN101864130B CN2010102365064A CN201010236506A CN101864130B CN 101864130 B CN101864130 B CN 101864130B CN 2010102365064 A CN2010102365064 A CN 2010102365064A CN 201010236506 A CN201010236506 A CN 201010236506A CN 101864130 B CN101864130 B CN 101864130B
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CN
China
Prior art keywords
wood
pvc plastic
parts
agent
pvc
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CN2010102365064A
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Chinese (zh)
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CN101864130A (en
Inventor
陈�峰
郑生力
杜东东
杨飞
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南京皇家聚锋建筑材料有限公司
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Publication of CN101864130A publication Critical patent/CN101864130A/en
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Abstract

The invention relates to a PVC plastic-wood material which has large wood powder consumption, high strength and smooth appearance. The PVC plastic-wood material comprises the following components in parts by mass:100 parts of PVC, 30-50 parts of wood powder, 5-10 parts of chlorinated polyethylene, 0.1-0.3 part of methyl methacrylate, 0.3-0.5 part of AC foaming agent, 1-5 parts of plasticizer, 1-5 parts of foaming adjusting agent, 1-3 parts of calcium-zinc stabilizing agent, 0.2-0.5 part of octadecanoic acid, 0.5-2 parts of ceresin wax, 10-20 parts of light activated calcium carbonate, titanate coupling agent, maleic anhydride and 1-3 parts of antioxygen, wherein the mass ratio of the titanate coupling agent to the wood powder is 1:100-8:100, and the mass ratio of the maleic anhydride to the wood powder is 1:100-8:100. By adopting the proportion of the materials in the invention, the wood powder doping amount can be effectively improved, and the obtained PVC plastic-wood material has high strength and smooth appearance.

Description

The PVC plastic-wood material
Technical field
The present invention relates to a kind of PVC plastic-wood material.
Background technology
Moulding wood, as its name suggests, is exactly the combination of solid wood and plastics, and it had both kept the affinity sensation of solid wood, have again good moistureproof water-fast, acid and alkali-resistance, antifungal, antistatic, performance such as prevent damaging by worms.Utilize the serial wood plastic composite of wood chip, straw, the production of plastic waste the like waste just progressively to enter fields such as finishing, building.At present main product is the PVC plastic-wood material that combines gained with wood chip with PVC, and still, owing to after mixing wood powder, the system consistency is relatively poor, makes the strength degradation of goods, outward appearance unsmooth.Wood powder consumption in the therefore general PVC plastic-wood material is about about 20% of PVC.
Summary of the invention
The invention provides a kind of PVC plastic-wood material, the wood powder consumption is big, intensity is high, outward appearance is level and smooth.
Consisting of of described PVC plastic-wood material:
PVC:100 part;
Wood powder: 30-50 part;
Chlorinatedpolyethylene (hereinafter to be referred as CPE): 5-10 part;
Methyl methacrylate: 0.1-0.3 part;
AC whipping agent: 0.3-0.5 part;
Softening agent: 1-5 part;
Foaming control agent: 1-5 part;
Calcium zinc stabilizer: 1-3 part;
Stearic acid: 0.2-0.5 part;
Paraffin: 0.5-2 part;
Light active calcium carbonate: 10-20 part;
Titanate coupling agent: the mass ratio of titanate coupling agent and wood powder is 1: 100~8: 100;
Maleic anhydride: the mass ratio of maleic anhydride and wood powder is 1: 100~8: 100;
Oxidation inhibitor: 1-3 part;
Described umber is mass parts.
Described wood powder is abrasive dust material such as agricultural stalk, sawdust material, and water ratio is no more than 3%, and fineness is the 10-50 order.
Described PVC and CPE adopt the general material of PVC plastic-wood material, do not repeat them here.
As preferred version, described softening agent is dioctyl phthalate (DOP) (hereinafter to be referred as DOP), and described foaming control agent is the PA-40 of deep chemical industry Co., Ltd. in the Japan.
Described oxidation inhibitor can be selected known various oxygenant for use, is preferably four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester (hereinafter to be referred as 1010).
As improvement of the present invention, the composition of described PVC plastic-wood material also comprises rutile titanium white powder 5-15 part; Biocide mildewcide 0.1-0.5 part and wood grain master batch 0.5-2 part.The wood grain master batch can be selected one or more for use according to product texture needs.
Adopt material mixture ratio of the present invention, can effectively improve the wood powder volume, intensity height, the outward appearance of gained PVC plastic-wood material are level and smooth simultaneously.
Described PVC plastic-wood material is preparation as follows preferably:
Step a mixes wood powder and maleic anhydride, and is stand-by 70~100 ℃ of down dry backs;
Step b mixes:
PVC is added in the mixer, and the mixture, chlorinated polyvinyl chloride, methyl methacrylate, stearic acid, paraffin, light active calcium carbonate, oxidation inhibitor that adds wood powder and maleic anhydride makes material mixing even with 350~500 rev/mins stirring at low speed; When treating that temperature rises to 54~66 ℃, add calcium zinc stabilizer and be stirred to 81~99 ℃, add AC whipping agent and softening agent, foaming control agent then, again with 1500~2500 rev/mins high-speed stirring to 112~138 ℃, be cooled to 36~44 ℃ of dischargings, obtain Preblend;
Step c, granulation obtains work in-process and moulds wooden granulation pellet:
Steps d, moulding.
As further preferred version, when the composition of described PVC plastic-wood material comprises wood grain master batch 0.5-2 part, in the steps d of preparation PVC plastic-wood material, adopt the twin screw extruder moulding, described twin screw extruder comprises that extrusion shaping machine body, extrusion shaping machine body upper edge extrude direction and be sequentially with first feeding device and second feeding device, work in-process are moulded wooden granulation pellet, wood grain master batch add extrusion shaping machine, extrusion moulding through first feeding device and second feeding device respectively.
Adopt above-mentioned preferred version to prepare the PVC plastic-wood material, can guarantee that the dispersion of wood grain master batch is more even, and can obtain different wood grain effects by the feed rate of controlling two feeding devices.The method of this interpolation wood grain master batch is different from traditional direct adding mixer carries out the blended method, and master batch because of the reason of deadweight, will cause its dispersion in raw material to can not get control in barrel in traditional blending means.
Description of drawings
Fig. 1 is the used twin screw extruder structural representation of the present invention.
Embodiment
Especially exemplified by preferred embodiment, the present invention is described in detail below below.
The raw material that following examples adopt is:
PVC: Qilu Petroleum Chemical Corporation Institute produces, trade mark SG-8;
CPE: Jiangsu Tianteng Chemical Co., Ltd. produces, trade mark CPE135;
Titanate coupling agent: the safe chemical industry of Shanghai promise company limited produces trade mark LH-22;
Wood powder: water ratio is 1%, and fineness is 30 orders;
The wood grain master batch: the prosperous chemical industry in Guangdong company limited produces trade mark F38.
The used proportioning of embodiment is as shown in table 1:
Table 1
Production stage in the various embodiments described above comprises:
1) wood powder and maleic anhydride are added in the moisture eliminator dry 1~2 hour, the temperature of moisture eliminator is set in 70~100 ℃, and the water ratio of dry back wood powder is lower than 0.5%.
2) with PVC and wood powder, rutile titanium white powder, CPE, methyl methacrylate, stearic acid, paraffin, light active calcium carbonate, biocide mildewcide, oxidation inhibitor stirring at low speed with 350~500 rev/mins, make material mixing even, when treating that temperature rises to 54~66 ℃, add calcium zinc stabilizer and be stirred to 81~99 ℃;
Add AC whipping agent, softening agent, foaming control agent and titanate coupling agent then, again with 1500~2500 rev/mins high-speed stirring to 112~138 ℃, institute's batch mixing to cold mixing system, is cooled to 36~44 ℃ of dischargings by the hot mixing system discharging of mixer, obtains Preblend;
3) with Preblend through the single screw extrusion machine extruding pelletization, technological temperature is set in 125~145 ℃, moulds wooden granulation pellet as work in-process and waits until utilization;
4) with the adding of the particle behind extruding pelletization twin screw extruder extrusion moulding as shown in Figure 1, after in addition the wood grain master batch being mixed in proportion, add extruder for shaping, obtain the wood texture of required type.Embodiment 1-8 gained section bar is skinning wood grain effect, does not have the breathing heavily phenomenon when the outlet mould.
Described twin screw extruder structure comprises extrusion shaping machine body a, the first feeding device b, the second feeding device c and moulds wooden model tool d as shown in Figure 1.Wherein, the first feeding device b and the second feeding device c all are arranged on the body, and first and second feeding devices are arranged in order along extruding direction.The first feeding device b is used for the adding that work in-process are moulded wooden granulation pellet, and the second feeding device c is used for the adding of wood grain master batch.Mould wooden model tool d and be arranged at the discharge port place of extrusion shaping machine body a.
As shown in the figure, the first feeding device b comprises that first hopper 11, first advances pipeline 12, first feed worm 13 and the respective drive motor and the first pan feeding pipeline 14.Wherein, first advance pipeline 12 parallel with extrusion shaping machine body a.First hopper 11 vertically is connected in the feed end of the first propelling pipeline 12.First feed worm 13 is located at first and advances in the pipeline 12.The first pan feeding pipeline 14 vertically is connected in first and advances between the discharge end and shaper body a of pipeline 12.
The second feeding device c comprises that second hopper 21, second advances pipeline 22, second feed worm 23 and the respective drive motor and the second pan feeding pipeline 24.Second advances pipeline 22 parallel with described shaper body a.Second hopper 21 vertically is connected in the feed end of the second propelling pipeline 22.Second feed worm 23 is located at second and advances in the pipeline 22.The second pan feeding pipeline 24 vertically is connected between the discharge end and shaper body a in second propulsion tube, 22 roads.Be provided with vacuum port 25 between the second pan feeding pipeline 24 and the shaper body a.
Utilize the detected performance test data of above case study on implementation (sample dimensions: high 2.5mm, long 50mm, wide 15mm) as shown in table 2:
Table 2
Concrete case study on implementation only is a preferable case study on implementation of the present invention described in the present invention, is not to be used for limiting practical range of the present invention.Be that all equivalences of doing according to the content of the present patent application claim change and modification, all should be as technology category of the present invention.

Claims (7)

1. PVC plastic-wood material is characterized in that consisting of:
PVC:100 part;
Wood powder: 30-50 part;
Chlorinatedpolyethylene: 5-10 part;
Methyl methacrylate: 0.1-0.3 part;
AC whipping agent: 0.3-0.5 part;
Softening agent: 1-5 part;
Foaming control agent: 1-5 part;
Calcium zinc stabilizer: 1-3 part;
Stearic acid: 0.2-0.5 part;
Paraffin: 0.5-2 part;
Light active calcium carbonate: 10-20 part;
Titanate coupling agent: the mass ratio of titanate coupling agent and wood powder is 1: 100~8: 100;
Maleic anhydride: the mass ratio of maleic anhydride and wood powder is 1: 100~8: 100;
Oxidation inhibitor: 1-3 part;
Described umber is mass parts.
2. PVC plastic-wood material as claimed in claim 1 is characterized in that described wood powder water ratio is no more than 3%, and fineness is the 10-50 order.
3. PVC plastic-wood material as claimed in claim 1 is characterized in that described softening agent is a dioctyl phthalate (DOP), and described foaming control agent is the PA-40 of deep chemical industry Co., Ltd. in the Japan.
4. PVC plastic-wood material as claimed in claim 1 is characterized in that described oxidation inhibitor is four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester.
5. as each described PVC plastic-wood material among the claim 1-4, it is characterized in that the composition of described PVC plastic-wood material also comprises rutile titanium white powder 5-15 part; Biocide mildewcide 0.1-0.5 part and wood grain master batch 0.5-2 part.
6. as each described PVC plastic-wood material among the claim 1-4, it is characterized in that described PVC plastic-wood material prepares as follows:
Step a mixes wood powder and maleic anhydride, and is stand-by 70~100 ℃ of down dry backs;
Step b mixes:
PVC is added in the mixer, and the mixture, chlorinatedpolyethylene, methyl methacrylate, stearic acid, paraffin, light active calcium carbonate, oxidation inhibitor that adds wood powder and maleic anhydride makes material mixing even with 350~500 rev/mins stirring at low speed; When treating that temperature rises to 54~66 ℃, add calcium zinc stabilizer and be stirred to 81~99 ℃, add AC whipping agent, softening agent, foaming control agent and titanate coupling agent then, again with 1500~2500 rev/mins high-speed stirring to 112~138 ℃, be cooled to 36~44 ℃ of dischargings, obtain Preblend;
Step c, granulation obtains work in-process and moulds wooden granulation pellet:
Steps d, moulding.
7. PVC plastic-wood material as claimed in claim 6, the composition that it is characterized in that described PVC plastic-wood material also comprises wood grain master batch 0.5-2 part, in the steps d of preparation PVC plastic-wood material, adopt the twin screw extruder moulding, described twin screw extruder comprises that extrusion shaping machine body, extrusion shaping machine body upper edge extrude direction and be sequentially with first feeding device and second feeding device, work in-process are moulded wooden granulation pellet, wood grain master batch add extrusion shaping machine, extrusion moulding through first feeding device and second feeding device respectively.
CN2010102365064A 2010-07-26 2010-07-26 PVC plastic-wood material CN101864130B (en)

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