CN103709544A - High-strength micro-foaming PVC wood plastic special-purpose material and its preparation method and use - Google Patents

High-strength micro-foaming PVC wood plastic special-purpose material and its preparation method and use Download PDF

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CN103709544A
CN103709544A CN201310614380.3A CN201310614380A CN103709544A CN 103709544 A CN103709544 A CN 103709544A CN 201310614380 A CN201310614380 A CN 201310614380A CN 103709544 A CN103709544 A CN 103709544A
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wood
agent
micro
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CN201310614380.3A
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CN103709544B (en
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王心潮
徐晶
苏新
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大连环美科技集团有限公司
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Abstract

The invention discloses a high-strength micro-foaming PVC wood plastic special-purpose material and its preparation method and use. The high-strength micro-foaming PVC wood plastic special-purpose material is obtained by mixing of filling master batches A and modified foaming master batches B according to a mass ratio of (40-65): (35-60). Through two-step coating modification-based surface treatment on a wood fiber filling material and through compounding of two coupling agents, a powder surface coating rate is greatly improved. The wood fiber filling material and the PVC resin single-component granules are used as filling master batches and further improvement of master batch compatibility is fully considered so that a filling amount of the wood fiber filling material is improved and a material cost is further reduced.

Description

The micro-foaming PVC wood of a kind of high strength is moulded PP Pipe Compound and preparation method thereof and application

Technical field

The present invention relates to a kind of micro-foaming PVC wood and mould PP Pipe Compound, particularly, relate to a kind of decoration material field that belongs to and there is high-intensity micro-foaming PVC wood and mould the preparation method of PP Pipe Compound.

Background technology

Wood plastic composite is that to take agriculture and forestry organic waste material and plastics be main raw material, utilizes the characteristic of macromolecule interfacial compatibility principle and filling plastic modification, processes the new green environment protection material of a kind of reversibility recycle of aftershaping through special process.

Micro-foaming PVC wood plastic composite has timber and plastics dual nature concurrently, has the features such as waterproof, fire-retardant, mildew-resistant, Anti-moth-eating, woodiness touch are strong, also has excellent processing characteristics simultaneously, can saw, can dig, can riveting, can bore, install and easy to maintenance.Owing to having adopted micro-foaming technique, have that density is little, thermal conductivity is low, thermal and insulating performance is excellent, can impact-absorbing load, feature that specific tenacity is high, also reduced the cost of material simultaneously, become the substitute of timber at present.Owing to not adding in process of production the materials such as sizing agent of toxic ingredients such as containing benzene, formaldehyde, environment friendly and pollution-free, therefore extensively approval and use of decorated finishing field now.

Owing to containing the hydroxyl structure of polarity in wood fibre, surface can be high, and water-absorbent is strong, and polyvinyl chloride resin has compared with low-pole, and surface can be low, and the two consistency is poor, easily forms interfacial separation phenomenon, causes mechanical properties decrease.Therefore the consistency that how to improve and improve between wood fibre filler and polyvinyl chloride resin is the technical problem underlying solving at present.The report that the domestic relevant micro-foaming technique of PVC is prepared wood-plastic decorating material is a lot, if the patent No. is CN201110119430.1, and CN201110133120.5, CN200910136578.9, CN200810021173.6, CN201110100619.6 etc.

Between at present more raising wood fibre and polyvinyl chloride resin, the method for consistency is to adopt in material prescription, to add coupling agent method, and the fibers such as wood powder are carried out to surface modification treatment, improves composite material strength.This method has some improvement to consistency between wood fibre and polyvinyl chloride resin, but improves effect not obvious, and this method often causes wood powder surface coating rate low, is difficult to reach good dispersion effect, and wood powder addition is low, and material cost is higher.

Meanwhile, the today of growing to even greater heights in resin price, except by adopting the method for micro-foaming, reduce resin usage quantity, reduce outside product cost, the loading level that how to improve the materials such as wood fibre is also the problem that the needs that reduce costs solve.Wherein select suitable moulding process to prepare micro-foaming PVC Wood-plastic material also most important.

Conclude, current micro-foaming PVC Wood-plastic material extruding-out process mainly contains three kinds.Most of patent reports all adopt single stage method granulation, be about to through high mixer, low mixed machine, after mixing, by forcing machine granulation, to make wood together with the wood fibre fillers such as the auxiliary agents such as coupling agent, whipping agent, weighting agent and wood powder, chaff powder and mould PP Pipe Compound, then mould extruder for shaping through wood.Also there is report, if the patent No. is that CN201110119430.1 has reported and first prepares modified plastics particle, then the auxiliary agents such as itself and wood powder, whipping agent are stirred evenly, directly extrude fine foaming wood-plastic sheet material.A kind of in addition in addition, without granulation, directly by other auxiliary agents such as polyvinyl chloride resin, wood powder, whipping agents after mixing machine stirs, direct extrusion molding.Above method has all considered to improve wood fibre and polyvinyl chloride resin compatibility problem, but does not fundamentally solve.

Summary of the invention

The object of the present invention is to provide the micro-foaming PVC wood of a kind of high strength to mould PP Pipe Compound and preparation method thereof.

Technical scheme of the present invention is:

The micro-foaming PVC wood of high strength is moulded a preparation method for PP Pipe Compound, by filler parent granule A and modified foaming mother particle B according to (40~65): the mass ratio of (35~60) mixes;

The manufacture raw material of described filler parent granule A is according to the mass fraction:

Described coupling agent 1 be in aluminate coupling agent, titanate coupling agent, aluminium/titanium composite coupler, amino silicane coupling agent, rare-earth coupling agent one or both, or two or more compound;

Described coupling agent 2 is esters of acrylic acid coupling agents, mainly comprises a kind of in methyl methacrylate, butyl acrylate coupling agent or two kinds;

Its manufacture method is:

A. first wood fibre filler is carried out to surface treatment: first at thermostatic drying chamber inner drying, drying temperature is 105 ℃ by wood fibre filler, and be 2h time of drying; Adopt coupling agent 1, coupling agent 2 successively dried wood fibre filler to be carried out to surface treatment, first coupling agent 1 and wood fibre filler are stirred to 5~8min in high-speed mixer, add wherein again coupling agent 2 to stir 10~15min and obtain pre-treatment wood fibre filler, the stirring velocity of described high-speed mixer is 1500~2500r/min, and mixing temperature is 90~110 ℃;

B. in high-speed mixer, add according to this linking agent, dispersion agent, lubricant, stablizer, softening agent, strengthening agent, vector resin again, stir 10~20min, proceed in low speed mixer and stir 3-5min, obtain Preblend; The stirring velocity of described high-speed mixer is 1500~2500r/min, and the stirring velocity of low speed mixer is 300~600r/min; Preblend, after twin screw extruder extruding pelletization, is obtained to filler parent granule A;

The manufacture raw material of described filler parent granule B is according to the mass fraction:

Its manufacture method is: in above-mentioned raw materials ratio, first whipping agent, foaming control agent, stablizer, lubricant, impact modifier, softening agent, tinting material, strengthening agent are joined to height and stir in machine, high-speed stirring 5~10min, when temperature of charge rises to 60~70 ℃, again polyvinyl chloride resin is added, continue to stir 10~20min, proceed in low speed mixer and stir 3-5min, obtain Preblend; The stirring velocity of described high-speed mixer is 1500~2500r/min, and the stirring velocity of low speed mixer is 300~600r/min; Preblend, after twin screw extruder extruding pelletization, is obtained to modified foaming mother particle B;

Described mixing process is by filler parent granule A and modified foaming mother particle B ratio of quality and the number of copies A:B=(40~65): (35~60), filler parent granule A and modified foaming mother particle B are joined in mixer, the process of mixing 5min under normal temperature, finally obtains the micro-foaming PVC wood of a kind of high strength and moulds PP Pipe Compound.

Further, described vector resin is polyvinyl chloride resin.Preferentially selecting model is the 1-3 kind in SG3, SG5, SG8.

Further, described wood fibre filler is the 1-3 kind in wood powder, chaff powder, straw powder, and its powder size is 40 order-200 orders.

Further, described linking agent is a kind of in dicumyl peroxide (DCP), benzoyl peroxide (BPO), ditertiary butyl peroxide (DTBP).

Further, described dispersion agent is chlorinatedpolyethylene.

Further, described lubricant mainly comprises one or both in paraffin, clorafin, oxidized polyethlene wax, vinyl bis-stearamides (EBS), or two or more compounds.

Further, described stablizer is a kind of in calcium-zinc composite stabilizing agent, organic tin stablizer, compound lead stabilizer or two kinds, or two or more compounds.

Further, described softening agent is a kind of in DOP, DBP, DOS or two kinds, or two or more compounds.

Further, described strengthening agent mainly comprises a kind of in light calcium carbonate, talcum powder, brucite powder, wollastonite powder or two kinds or two or more compounds.Its powder size is 80 order~325 orders.

The present invention simultaneously micro-foaming PVC wood of claimed a kind of high strength of utilizing above-mentioned preparation method to obtain moulds PP Pipe Compound.

The micro-foaming PVC wood of this high strength is moulded PP Pipe Compound and mainly at wood, is moulded in field and apply.

The invention has the beneficial effects as follows:

(1) adopted the coated modification technology of secondary to carry out surface treatment to wood fibre filler, adopt two kinds of composite uses of coupling agent, greatly improved powder surface clad ratio, wood fibre filler and the independent granulation of polyvinyl chloride resin are used as a kind of filler parent granule simultaneously, taken into full account the compatibility problem of further raising between the two, improve the loading level of wood fibre filler, thereby further reduced material cost.

(2) owing to having prepared filler parent granule A, wood fibre filler and resin have passed through once fully plasticizing in twin screw extruder, dispersed in resin, then while mixing extrusion moulding with modified foaming mother particle B, consistency can be better, and the wood-plastic decorating material intensity making is larger.

(3) owing to adopting the method for granulation respectively, use convenient, can be according to the requirement of different moulds, different size, different frothing percentages, suitably adjust the massfraction of filler parent granule A and modified foaming mother particle B, can obtain corresponding product, the scope of application of product has expanded, and is no longer a corresponding a kind of product of formula, has improved the versatility of product.

(4) nontoxic, pollution-free, the light weight of the present invention, mechanical property is good, density is little, cost is low, its property indices meets or exceeds GB24137-2009 wood-plastic decorative board standard-required as indexs such as bending strength, bending elastic modulus.

Embodiment

Embodiment 1

1. taking dried particle diameter is 40 object wood powder 80kg, particle diameter is 80 object chaff powder 80kg, titanate coupling agent 1kg, add in the high-speed mixer of 300 liters and stir 5min, stirring velocity is 2000r/min, mixing temperature is 90 ℃ and adds wherein methyl methacrylate 1kg again, stirs 15min and obtains pre-treatment wood fibre filler; Again to adding according to this peroxidation in high-speed mixer and the polyvinyl chloride resin 20kg that benzoyl 0.4kg, paraffin 4kg, calcium-zinc composite stabilizing agent 2kg, DOP1.6kg, 200 object light calcium carbonate 10kg, model are SG8, continue to stir 15min, proceed in low speed mixer and stir 5min, stirring velocity is that 300r/min obtains Preblend; Blowing is in hopper immediately, then uses the parallel double-screw extruder of screw diameter Φ 75mm, length-to-diameter ratio 42:1, and extruding pelletization at 120~145 ℃, just makes filler parent granule A;

2. take Cellmic C 121 6kg, sodium bicarbonate 7.5kg, organotin stabilizer 3kg, paraffin 1.5kg, ACR7.5kg, DOP6kg, toner 1.5kg and light calcium carbonate 21kg, join together that 300 liters are high to be stirred in machine, high-speed stirring 10min, stirring velocity is 1500r/min, and when temperature of charge rises to 70 ℃, then the polyvinyl chloride resin 240kg that is SG3 by model adds, continue to stir 10min, proceed in low speed mixer and stir 3min, stirring velocity is 400r/min, obtains Preblend; Blowing is in hopper immediately, then uses the parallel double-screw extruder of screw diameter Φ 75mm, length-to-diameter ratio 42:1, and extruding pelletization at 80~100 ℃, just makes modified foaming mother particle B.

3. the above-mentioned A making, B two master batches are mixed after 5min in the ratio of A:B=55:45 in mixer, directly at wood, mould extrusion moulding on forcing machine, through mould, cooling, traction, cutting, make micro-foaming PVC wood-plastic decorative board, density is 0.68g/cm3, its all technical all reaches GB24137-2009 wood-plastic decorative board standard-required, its bending strength can reach 22MPa, and bending elastic modulus can reach 2000MPa.

Embodiment 2

1. taking dried particle diameter is 120 object wood powder 100kg, particle diameter is 150 object straw powder 50kg, amino silicane coupling agent 1.6kg, add in the high-speed mixer of 300 liters and stir 8min, stirring velocity is 2000r/min, mixing temperature is 100 ℃ and adds wherein butyl acrylate 1.2kg again, stirs 15min and obtains pre-treatment wood fibre filler; Again to adding according to this peroxidation in high-speed mixer and the polyvinyl chloride resin 30kg that benzoyl 0.6kg, chlorinatedpolyethylene 2kg, clorafin 1kg, compound lead stabilizer 3kg, DOP2.6kg, 200 object wollastonite powder 8kg, model are SG5, continue to stir 15min, proceed in low speed mixer and stir 5min, stirring velocity is that 300r/min obtains Preblend; Blowing is in hopper immediately, then uses the parallel double-screw extruder of screw diameter Φ 75mm, length-to-diameter ratio 42:1, and extruding pelletization at 120~145 ℃, just makes filler parent granule A;

2. take Cellmic C 121 7.5kg, sodium bicarbonate 6kg, calcium-zinc composite stabilizing agent 7.5kg, paraffin 3kg, chlorinatedpolyethylene 18kg, DOP6.6kg, titanium dioxide 2.4kg and 325 order talcum powder 42kg, join together that 300 liters are high to be stirred in machine, high-speed stirring 15min, stirring velocity is 2000r/min, when temperature of charge rises to 75 ℃, the polyvinyl chloride resin 90kg that the polyvinyl chloride resin 120kg that is SG3 by model again, model are SG5 adds, continue to stir 20min, proceed to and in low speed mixer, stir 5min, stirring velocity is 500r/min, obtains Preblend; Blowing is in hopper immediately, then uses the parallel double-screw extruder of screw diameter Φ 75mm, length-to-diameter ratio 42:1, and extruding pelletization at 80~100 ℃, just makes modified foaming mother particle B.

3. the above-mentioned A making, B two master batches are mixed after 5min in the ratio of A:B=45:55 in mixer, directly at wood, mould extrusion moulding on forcing machine, through mould, cooling, traction, cutting, make micro-foaming PVC wood-plastic decorative board, density is 0.62g/cm3, its all technical all reaches GB24137-2009 wood-plastic decorative board standard-required, its bending strength can reach 25MPa, and bending elastic modulus can reach 2800MPa.

Claims (10)

1. the micro-foaming PVC wood of high strength is moulded a preparation method for PP Pipe Compound, by filler parent granule A and modified foaming mother particle B according to (40~65): the mass ratio of (35~60) mixes;
The manufacture raw material of described filler parent granule A is according to the mass fraction:
Described coupling agent 1 be in aluminate coupling agent, titanate coupling agent, aluminium/titanium composite coupler, amino silicane coupling agent, rare-earth coupling agent one or both, or two or more compound;
Described coupling agent 2 is esters of acrylic acid coupling agents, mainly comprises a kind of in methyl methacrylate, butyl acrylate coupling agent or two kinds;
Its manufacture method is:
A. first wood fibre filler is carried out to surface treatment: first at thermostatic drying chamber inner drying, drying temperature is 105 ℃ by wood fibre filler, and be 2h time of drying; Adopt coupling agent 1, coupling agent 2 successively dried wood fibre filler to be carried out to surface treatment, first coupling agent 1 and wood fibre filler are stirred to 5~8min in high-speed mixer, add wherein again coupling agent 2 to stir 10~15min and obtain pre-treatment wood fibre filler, the stirring velocity of described high-speed mixer is 1500~2500r/min, and mixing temperature is 90~110 ℃;
B. in high-speed mixer, add successively linking agent, dispersion agent, lubricant, stablizer, softening agent, strengthening agent, vector resin again, stir 10~20min, proceed in low speed mixer and stir 3-5min, obtain Preblend; The stirring velocity of described high-speed mixer is 1500~2500r/min, and the stirring velocity of low speed mixer is 300~600r/min; Preblend, after twin screw extruder extruding pelletization, is obtained to filler parent granule A;
The manufacture raw material of described filler parent granule B is according to the mass fraction:
Its manufacture method is: in above-mentioned raw materials ratio, first whipping agent, foaming control agent, stablizer, lubricant, impact modifier, softening agent, tinting material, strengthening agent are joined to height and stir in machine, high-speed stirring 5~10min, when temperature of charge rises to 60~70 ℃, again polyvinyl chloride resin is added, continue to stir 10~20min, proceed in low speed mixer and stir 3-5min, obtain Preblend; The stirring velocity of described high-speed mixer is 1500~2500r/min, and the stirring velocity of low speed mixer is 300~600r/min; Preblend, after twin screw extruder extruding pelletization, is obtained to modified foaming mother particle B;
Described mixing process is by filler parent granule A and modified foaming mother particle B ratio of quality and the number of copies A:B=(40~65): (35~60), filler parent granule A and modified foaming mother particle B are joined in mixer, the process of mixing 5min under normal temperature, finally obtains the micro-foaming PVC wood of a kind of high strength and moulds PP Pipe Compound.
2. the micro-foaming PVC wood of a kind of high strength according to claim 1 is moulded the preparation method of PP Pipe Compound, it is characterized in that described vector resin is polyvinyl chloride resin.
3. the micro-foaming PVC wood of a kind of high strength according to claim 1 is moulded the preparation method of PP Pipe Compound, it is characterized in that described wood fibre filler is the 1-3 kind in wood powder, chaff powder, straw powder, and its powder size is 40 order-200 orders.
4. the micro-foaming PVC wood of a kind of high strength according to claim 1 is moulded the preparation method of PP Pipe Compound, it is characterized in that described linking agent is a kind of in dicumyl peroxide (DCP), benzoyl peroxide (BPO), ditertiary butyl peroxide (DTBP).
5. the micro-foaming PVC wood of a kind of high strength according to claim 1 is moulded the preparation method of PP Pipe Compound, it is characterized in that described dispersion agent is chlorinatedpolyethylene.
6. the micro-foaming PVC wood of a kind of high strength according to claim 1 is moulded the preparation method of PP Pipe Compound, it is characterized in that described lubricant mainly comprises one or both in paraffin, clorafin, oxidized polyethlene wax, vinyl bis-stearamides (EBS), or two or more compounds.
7. the micro-foaming PVC wood of a kind of high strength according to claim 1 is moulded the preparation method of PP Pipe Compound, it is characterized in that described stablizer is a kind of in calcium-zinc composite stabilizing agent, organic tin stablizer, compound lead stabilizer or two kinds, or two or more compounds.
8. the micro-foaming PVC wood of a kind of high strength according to claim 1 is moulded the preparation method of PP Pipe Compound, it is characterized in that described softening agent is a kind of in DOP, DBP, DOS or two kinds, or two or more compounds.
9. the micro-foaming PVC wood of a kind of high strength according to claim 1 is moulded the preparation method of PP Pipe Compound, it is characterized in that described strengthening agent mainly comprises a kind of in light calcium carbonate, talcum powder, brucite powder, wollastonite powder or two kinds or two or more compounds.Its powder size is 80 order~325 orders.
10. the micro-foaming PVC wood of a kind of high strength obtaining by method described in claim 1 is moulded PP Pipe Compound.
CN201310614380.3A 2013-11-26 2013-11-26 A kind of high strength fretting map PVC wood plastic PP Pipe Compound and preparation method thereof and application CN103709544B (en)

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN104341692A (en) * 2014-09-30 2015-02-11 大连环美科技集团有限公司 Nanometer calcium carbonate-reinforced ecological wood material and preparation method thereof
CN104945770A (en) * 2015-06-03 2015-09-30 芜湖友信激光模具有限公司 Heat-aging resistance modified polyvinyl chloride woven bag
CN105175929A (en) * 2015-06-03 2015-12-23 芜湖友信激光模具有限公司 Heat-resistant corrosion-resistant woven bag
CN106883446A (en) * 2017-03-21 2017-06-23 合肥华凌股份有限公司 Fretting map functional agglomerate composition and preparation method thereof and refrigerator foaming plate
CN107099103A (en) * 2017-05-12 2017-08-29 程艳青 A kind of flame-retardant expanded type PVC wood mould plate of high tenacity and preparation method thereof
CN108841114A (en) * 2018-07-18 2018-11-20 合肥梵腾环保科技有限公司 A kind of novel environment friendly Wood-plastic material and preparation method thereof

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CN102336989A (en) * 2011-10-19 2012-02-01 北京欧尼克新型材料有限公司 Polyvinyl chloride (PVC) wood-plastic foaming wood grain section and preparation method thereof
CN103044820A (en) * 2013-01-10 2013-04-17 郑州大学 Novel flame-retardant wood-plastic technology formula
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CN1807500A (en) * 2005-01-20 2006-07-26 金明 Combustion-proof composite foaming granule material for producing wood plastic product
CN101955614A (en) * 2010-02-22 2011-01-26 成都奥金希斯科技股份有限公司 Novel wood plastic composite decorative building material and manufacturing method thereof
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104341692A (en) * 2014-09-30 2015-02-11 大连环美科技集团有限公司 Nanometer calcium carbonate-reinforced ecological wood material and preparation method thereof
CN104945770A (en) * 2015-06-03 2015-09-30 芜湖友信激光模具有限公司 Heat-aging resistance modified polyvinyl chloride woven bag
CN105175929A (en) * 2015-06-03 2015-12-23 芜湖友信激光模具有限公司 Heat-resistant corrosion-resistant woven bag
CN104945770B (en) * 2015-06-03 2018-05-15 芜湖友信激光模具有限公司 A kind of heat-proof aging modified polyvinyl chloride woven bag
CN105175929B (en) * 2015-06-03 2018-05-15 芜湖友信激光模具有限公司 A kind of heat-and corrosion-resistant woven bag
CN106883446A (en) * 2017-03-21 2017-06-23 合肥华凌股份有限公司 Fretting map functional agglomerate composition and preparation method thereof and refrigerator foaming plate
CN107099103A (en) * 2017-05-12 2017-08-29 程艳青 A kind of flame-retardant expanded type PVC wood mould plate of high tenacity and preparation method thereof
CN108841114A (en) * 2018-07-18 2018-11-20 合肥梵腾环保科技有限公司 A kind of novel environment friendly Wood-plastic material and preparation method thereof

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