CN102321267A - Preparation method of PVC (polyvinyl chloride) foaming wood-polymer sectional material - Google Patents
Preparation method of PVC (polyvinyl chloride) foaming wood-polymer sectional material Download PDFInfo
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- CN102321267A CN102321267A CN201110219710A CN201110219710A CN102321267A CN 102321267 A CN102321267 A CN 102321267A CN 201110219710 A CN201110219710 A CN 201110219710A CN 201110219710 A CN201110219710 A CN 201110219710A CN 102321267 A CN102321267 A CN 102321267A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
Abstract
The invention relates to a preparation method of a PVC (polyvinyl chloride) foaming wood-polymer sectional material. The method comprises the following steps: (a) taking out raw materials which comprise the following components: PVC resin, wood fiber, an AC (azodicarbonamide) foaming agent, a foaming regulator, a stabilizer, calcium carbonate, a lubricating agent, toner and an antioxidant; and (b) putting the raw materials in a high-speed mixer for mixing, then putting the obtained mixture after evenly mixing in a cold stirrer for cooling to room temperature, discharging for later use, then carrying out extrusion molding with a granulation extruder so as to obtain the PVC foaming wood-polymer sectional material. The PVC foaming wood-polymer sectional material prepared by the method in the invention is energy-saving and environmentally-friendly and has good performance; and simultaneously, the stabilizer adopted in the method is low in toxicity, has synergistic effect with auxiliaries and accelerates the decomposition of the foaming agent, and the produced wood-polymer sectional material is smooth in surface and fine and uniform in section foams and has huge market potential.
Description
Technical field
The present invention relates to the preparation method of the Wood-plastic profiles in a kind of material technology field, specifically, that relate to is a kind of preparation method of PVC foaming wood-plastic section bar.
Technical background
Wood-plastic composite section bar be a kind of with xylon as main filler, a kind of low foaming special-shaped material product of surface skining, core layer foaming.Wood-plastic composite section bar density is low, general 600～800kg/m
3, quite the hard PVC section bar is half the.Wood-plastic composite section bar has extremely low heat conductivity and good heat insulation, soundproof effect; The lot of advantages that had both had timber, as: can dig, can saw, can bore, can follow closely, bond properties is good or the like.Wood-plastic composite section bar also has some advantages that do not possess, as: the imputrescibility that makes moist, indeformable, anti-damaging by worms, termite-proof, fire resistance is good, can put out certainly from fire, and the resist chemical performance is strong.The smooth densification of Wood-plastic composite section bar product surface generally without japanning, but has extraordinary painting performance, and the user can change its color by the hobby of oneself.If in prescription, add colour batch, the wood grain that occurs on section bar product surface of extruding and the section, if natural, as smart as a new pin.So Wood-plastic composite section bar is a kind of material of environmental protection, along with more and more paying attention to environmental problem in the world, this material has boundless application prospect.
The low foaming of PVC is extruded worldwide and is developed rapidly.The little foaming extruded material of PVC has " microvesicle " weave construction similar with timber, and abscess is of a size of 11um～10um, and its outward appearance is very similar with natural timber with performance and be superior to timber, have the laudatory title of " synthetic wood ".One of main application fields that the low foaming of hard PVC is extruded is a door and window profile material.The major advantage of this based article is, one, save raw materials consumption; Two, unrelieved stress is very little in the goods, and dimensional stability is good; Three, sound-insulating excellent property.The hard PVC low foamed material adopts one of free foaming, skinning control foaming or three kinds of technologies of coextrusion foaming to produce usually.Door and window profile material generally adopts skinning control foam process.Skinning control foaming is meant that to adopt one special, in the mouth mould of core is arranged, thereby make in the typing cover before plastifying material bundle is admitted to mouthful mould, its surface cool forms cortex, and foams in inside.The key extruded of foaming is exactly that the fusion plastification and the moulding process of growing up of the decomposition that makes whipping agent, nucleation, bubble and serial process such as fixing and polyvinyl chloride resin adapts.
Summary of the invention
The objective of the invention is to solve the deficiency of prior art, a kind of preparation method of PVC foaming wood-plastic section bar is provided.
The preparation method of PVC foaming wood-plastic section bar of the present invention comprises the steps:
(a) weigh raw material, said raw material comprises the component of following parts by weight,
75～100 parts of polyvinyl chloride resins
25～50 parts of xylons
1.0～1.8 parts of AC whipping agents
3～6 parts of foaming control agents
1.0～1.8 parts of stablizers
6～8 parts in lime carbonate
0.2～0.6 part of lubrication prescription
0.4～0.8 part of toner
0.2～0.6 part in oxidation inhibitor;
(b) raw material is dropped into high-speed mixer and mix, after mixing, put into the cold machine that stirs and be cooled to room temperature, discharging is subsequent use, through the granulating extruder extrusion moulding, promptly gets afterwards.
Preferably, said raw material also comprises the foamed promoter of 3～6 parts by weight.
Preferably, said raw material also comprises the wax of 0.2～0.6 parts by weight.
Preferably, said stablizer is a tin stabilizer.
Preferably, the fineness of said lime carbonate is more than 800 orders.
Preferably, the whipping temp of said high-speed mixer is controlled at 120 ℃～140 ℃.
Preferably, said extrusion moulding, its actual temp is set to, each section of forcing machine temperature: one section 145 ℃～150 ℃, two sections 155 ℃～165 ℃, three sections, 175 ℃～185 ℃, four sections 180 ℃～195 ℃; 195 ℃～205 ℃ of die temperatures; Screw speed is 5rpm～9rpm.
Preferably, the length-to-diameter ratio of said granulating extruder screw rod is 27～32.
Preferably, the proportion of said PVC foaming wood-plastic window profile is 0.55～0.65.
The present invention has following beneficial effect:
Among the preparation method of the present invention; The good dispersivity of AC whipping agent and polyvinyl chloride resin; Decomposition rate is fast, is fit to skinning or free foaming technique, emits heat during decomposition and is prone to make on every side that melt viscosity descends and foams; Adopt other auxiliary agent to coordinate mutually simultaneously, can better improve whipping agent and dispersion effect;
The PVC foaming wood-plastic section bar of the inventive method preparation, energy-conserving and environment-protective, excellent property; Simultaneously, the stablizer toxicity that adopts in the method for the present invention is low, with auxiliary agent synergistic function is arranged, and quickens the decomposition of whipping agent, the Wood-plastic profiles smooth surface of production, and the cross section foaming is fine and closely woven evenly, and market potential is huge.
Embodiment
Below in conjunction with instance technical scheme of the present invention is done further to explain, but following content is not used in qualification protection scope of the present invention.The part that does not below have to specify is this area technological operation commonly used and reagent commonly used, carries out according to the operation of explaining in general technology and the appearance handbook.
Embodiment 1
Present embodiment provides a kind of preparation method of PVC foaming wood-plastic section bar, comprises the steps:
(a) weigh raw material, said raw material and parts by weight thereof are for seeing table 1,
Table 1
Wherein, stablizer is a tin stabilizer, and the fineness of lime carbonate is 800 orders;
(b) raw material is dropped into high-speed mixer and mix, after mixing, put into the cold machine that stirs and be cooled to room temperature, discharging is subsequent use, through the granulating extruder extrusion moulding, promptly gets afterwards;
Wherein, the whipping temp of high-speed mixer is controlled at 100 ℃～120 ℃;
Each of forcing machine section temperature is: one section 145 ℃～150 ℃, and two sections 155 ℃～165 ℃, three sections, 175 ℃～185 ℃, four sections 180 ℃～195 ℃; 195 ℃～205 ℃ of die temperatures; Screw speed is 5rpm～9rpm;
The length-to-diameter ratio of granulating extruder screw rod is 27～32.
The proportion of the PVC foaming wood-plastic window profile of present embodiment preparation is 0.55.
Embodiment 2
Present embodiment provides a kind of preparation method of PVC foaming wood-plastic section bar, comprises the steps:
(a) weigh raw material, said raw material and parts by weight thereof are seen table 2,
Table 2
Wherein, the fineness of lime carbonate is 1000 orders;
(b) raw material is dropped into high-speed mixer and mix, after mixing, put into the cold machine that stirs and be cooled to room temperature, discharging is subsequent use, through the granulating extruder extrusion moulding, promptly gets afterwards;
Wherein, the whipping temp of high-speed mixer is controlled at 120 ℃～140 ℃;
Each of forcing machine section temperature is: one section 145 ℃～150 ℃, and two sections 155 ℃～165 ℃, three sections, 175 ℃～185 ℃, four sections 180 ℃～195 ℃; 195 ℃～205 ℃ of die temperatures; Screw speed is 5rpm～9rpm;
The length-to-diameter ratio of granulating extruder screw rod is 27～32.
The proportion of the PVC foaming wood-plastic window profile of present embodiment preparation is 0.60.
Embodiment 3
Present embodiment provides a kind of preparation method of PVC foaming wood-plastic section bar, comprises the steps:
(a) weigh raw material, said raw material and parts by weight thereof are for seeing table 3,
Table 3
Wherein, the fineness of lime carbonate is 1200 orders;
(b) raw material is dropped into high-speed mixer and mix, after mixing, put into the cold machine that stirs and be cooled to room temperature, discharging is subsequent use, through the granulating extruder extrusion moulding, promptly gets afterwards;
Wherein, the whipping temp of high-speed mixer is controlled at 125 ℃～135 ℃;
Each of forcing machine section temperature is: one section 145 ℃～150 ℃, and two sections 155 ℃～165 ℃, three sections, 175 ℃～185 ℃, four sections 180 ℃～195 ℃; 195 ℃～205 ℃ of die temperatures; Screw speed is 5rpm～9rpm;
The length-to-diameter ratio of granulating extruder screw rod is 27～32.
The proportion of the PVC foaming wood-plastic window profile of present embodiment preparation is 0.65.
Embodiment 4-6
The difference of embodiment 4-6 and embodiment 3 is that the raw material in the step of embodiment 4-6 (a) also comprises foamed promoter, and its parts by weight see the following form 4:
Table 4
Embodiment 7-9
The difference of embodiment 7-9 and embodiment 3 is that the raw material in the step of embodiment 7-9 (a) also comprises wax, and its parts by weight see the following form 5:
Table 5
Among the preparation method of above embodiment; The good dispersivity of AC whipping agent and polyvinyl chloride resin; Decomposition rate is fast, is fit to skinning or free foaming technique, emits heat during decomposition and is prone to make on every side that melt viscosity descends and foams; Adopt other auxiliary agent to coordinate mutually simultaneously, can better improve whipping agent and dispersion effect; The PVC foaming wood-plastic section bar of the method preparation of above embodiment, energy-conserving and environment-protective, excellent property; Simultaneously, the stablizer toxicity that adopts in the method for the present invention is low, with auxiliary agent synergistic function is arranged, and quickens the decomposition of whipping agent, the Wood-plastic profiles smooth surface of production, and the cross section foaming is fine and closely woven evenly, and market potential is huge.
Scope of the present invention does not receive the restriction of said specific embodiments, and said embodiment is only desired also to comprise the method and the component of functional equivalent in the scope of the invention as the single example of illustrating all respects of the present invention.In fact, except content as herein described, those skilled in the art can easily grasp multiple improvement of the present invention with reference to the description of preceding text.Said improvement also falls within the scope of appended claims.Every piece of reference that preceding text are mentioned is listed this paper in as a reference all in full.
Claims (9)
1. the preparation method of a PVC foaming wood-plastic section bar is characterized in that, comprises the steps:
(a) weigh raw material, said raw material comprises the component of following parts by weight,
75～100 parts of polyvinyl chloride resins
25～50 parts of xylons
1.0～1.8 parts of AC whipping agents
3～6 parts of foaming control agents
1.0～1.8 parts of stablizers
6～8 parts in lime carbonate
0.2～0.6 part of lubrication prescription
0.4～0.8 part of toner
0.2～0.6 part in oxidation inhibitor;
(b) raw material is dropped into high-speed mixer and mix, after mixing, put into the cold machine that stirs and be cooled to room temperature, discharging is subsequent use, through the granulating extruder extrusion moulding, promptly gets afterwards.
2. the preparation method of PVC foaming wood-plastic section bar as claimed in claim 1 is characterized in that said raw material also comprises the foamed promoter of 3～6 parts by weight.
3. the preparation method of PVC foaming wood-plastic section bar as claimed in claim 1 is characterized in that said raw material also comprises the wax of 0.2～0.6 parts by weight.
4. the preparation method of PVC foaming wood-plastic section bar as claimed in claim 1 is characterized in that, said stablizer is a tin stabilizer.
5. the preparation method of PVC foaming wood-plastic section bar as claimed in claim 1 is characterized in that, the fineness of said lime carbonate is more than 800 orders.
6. the preparation method of PVC foaming wood-plastic section bar as claimed in claim 1 is characterized in that, the whipping temp of said high-speed mixer is controlled at 120 ℃～140 ℃.
7. the preparation method of PVC foaming wood-plastic section bar as claimed in claim 1 is characterized in that, said extrusion moulding; Its actual temp is set to, each section of forcing machine temperature: one section 145 ℃～150 ℃, and two sections 155 ℃～165 ℃; Three sections, 175 ℃～185 ℃, four sections 180 ℃～195 ℃; 195 ℃～205 ℃ of die temperatures; Screw speed is 5rpm～9rpm.
8. the preparation method of PVC foaming wood-plastic section bar as claimed in claim 1 is characterized in that the length-to-diameter ratio of said granulating extruder screw rod is 27～32.
9. the preparation method of PVC foaming wood-plastic section bar as claimed in claim 1 is characterized in that, the proportion of said PVC foaming wood-plastic window profile is 0.55～0.65.
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| CN201110219710A CN102321267A (en) | 2011-08-02 | 2011-08-02 | Preparation method of PVC (polyvinyl chloride) foaming wood-polymer sectional material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719034A (en) * | 2012-06-13 | 2012-10-10 | 濮阳市东宝科技发展有限公司 | Wallboard and preparation method thereof |
| WO2019218230A1 (en) * | 2018-05-16 | 2019-11-21 | 深圳市君盈建筑科技有限公司 | House having water pipe separate from main structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525456A (en) * | 2008-03-03 | 2009-09-09 | 翁端华 | PVC wood-plastic low foaming granule material and preparation method thereof |
| CN102108168A (en) * | 2010-12-24 | 2011-06-29 | 上海国成塑料有限公司 | Preparation method of polyvinyl chloride (PVC) foamed wood-plastic window sectional material |
-
2011
- 2011-08-02 CN CN201110219710A patent/CN102321267A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525456A (en) * | 2008-03-03 | 2009-09-09 | 翁端华 | PVC wood-plastic low foaming granule material and preparation method thereof |
| CN102108168A (en) * | 2010-12-24 | 2011-06-29 | 上海国成塑料有限公司 | Preparation method of polyvinyl chloride (PVC) foamed wood-plastic window sectional material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719034A (en) * | 2012-06-13 | 2012-10-10 | 濮阳市东宝科技发展有限公司 | Wallboard and preparation method thereof |
| WO2019218230A1 (en) * | 2018-05-16 | 2019-11-21 | 深圳市君盈建筑科技有限公司 | House having water pipe separate from main structure |
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Application publication date: 20120118 |