CN102911456B - PVC (polyvinyl chloride)/ASA (acrylonitrile styrene acrylate) pipe with high impact resistance and method for preparing same - Google Patents

PVC (polyvinyl chloride)/ASA (acrylonitrile styrene acrylate) pipe with high impact resistance and method for preparing same Download PDF

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Publication number
CN102911456B
CN102911456B CN201210357271.3A CN201210357271A CN102911456B CN 102911456 B CN102911456 B CN 102911456B CN 201210357271 A CN201210357271 A CN 201210357271A CN 102911456 B CN102911456 B CN 102911456B
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asa
pvc
powder
tubing
polyvinyl chloride
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CN102911456A (en
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林传忍
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Klinsmann new materials Co., Ltd.
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GUANYI INDUSTRIAL Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0022Combinations of extrusion moulding with other shaping operations combined with cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion 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
    • B29C48/09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/9258Velocity
    • B29C2948/9259Angular velocity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92704Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92885Screw or gear
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92876Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895Barrel or housing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92904Die; Nozzle zone

Abstract

The invention discloses a PVC (polyvinyl chloride)/ASA (acrylonitrile styrene acrylate) pipe with high impact resistance and a method for preparing the PVC/ASA pipe by mixing a material A and a material B at equal proportion, extruding and granulating. By further optimizing the formula, the dispersion of the inorganic filler can be promoted in the process of processing the PVC pipe, the flowability of the PVC melt can be improved, the tensile strength and the elongation at break can be improved, and the defects of poor toughness and low hardness of the PE product adopting the chlorinated PE are changed. By adopting the acrylic impact-resistant modifiers including ACR, ACM, MBS, ABS resin and other ingredients in the formula, the cold bending properties and the impact resisting properties of the produced pipe are improved.

Description

A kind of high-impact PVC/ASA tubing and preparation method thereof
Technical field
The present invention relates to PVC production field, particularly relate to a kind of high-impact PVC/ASA tubing and preparation method thereof.
Background technology
The major ingredient of PVC is polyvinyl chloride, adds the auxiliary material such as softening agent, antiaging agent in addition to increase its thermotolerance, toughness, ductility etc.PVC be the world today is liked deeply, the rather popular and a kind of synthetic materials be also widely used.PVC is a kind of tubing of maturation, is mainly used in water supply and sewage work.PVC has acidproof, alkaline-resisting, erosion resistance, intensity advantages of higher, but, at present large step point production manufacturer production PVC shock resistance out bad, especially the plasticizing process in the processing of PVC product, the dispersion of inorganics and the processing fluidity of PVC melt are difficult problems always.
Summary of the invention
The object of the invention is to provide a kind of high-impact PVC/ASA tubing and preparation method thereof for the deficiencies in the prior art, improve the shock resistance of PVC.
For achieving the above object, the present invention adopts following technical scheme:
A kind of high-impact PVC/ASA tubing is expected by A and B expects that equal proportion mixes extruding pelletization and is prepared from, and described A material, B material are obtained by the raw material extruding pelletization of following weight part respectively:
A expects:
Polyvinyl chloride SG-5 50-60, polyvinyl chloride reworked material 40-50, Calcium of intensifiens 20-30, ABS high glue powder 4-6, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 2-5, methyl methacrylate 0.2-0.4, acrylic ester impact-resisting modifier ACR2-5, vinyltriethoxysilane 0.3-0.5, antioxidant 1010 0.4-0.6, polyethylene wax 0.3-0.5, pentanoic 0.1-0.3, modified Nano powder 5-10
Described modified Nano powder is obtained by following method: after calcium carbonate, celestite powder, the mixing of feldspar in powder equal proportion, scaling loss 4-5 hour at 600-700 DEG C, then nanometer powder is ground to form, admix the Di(dioctylpyrophosphato) ethylene titanate agitating being equivalent to powder weight 3-5% even, dry, be ground into powder;
B expects:
Polyvinyl chloride SG-5 50-60, ASA resin 20-30, bisphenol A polycarbonate 10-15, ACM 4-8, MBS 4-8, diisopropyl azodiformate 2-5, chlorinatedpolyethylene 10-20, phenyl triethoxysilane 0.3-0.5, two Lauryl Alcohol ester 0.1-0.3, oxidation inhibitor 1035 0.2-0.5, ethylene bis stearamide 0.3-0.5, calcium stearate 2-5, attapulgite modified 5-10
Described attapulgite modifiedly to be obtained by following method: first use 15-20% salt acid soak attapulgite 1-2 hour, leave standstill, clarification, centrifugal, solid washed with water is extremely neutral, after oven dry, add the vinyltriethoxysilane agitating being equivalent to solid weight 3-5% even, dry, be ground into powder.
The preparation method of described high-impact PVC/ASA tubing comprises the following steps:
The first step: prepare A material, B material respectively
One, the preparation of A material
(1) take each formula material by formula rate, the starting material weighed up are dropped into high-speed stirring 10-15 min in high-speed mixer, and temperature is 80-90 DEG C, after its moisture content fully evaporates, through cold mixer, material is down to 40-50 DEG C;
(2) above-mentioned compound is joined in parallel double-screw extruder carry out melt blending and granulation namely obtain A material, extruder barrel temperature is 250-265 DEG C, and die head temperature is 253-275 DEG C, and screw speed is 220-550rpm;
Two, the preparation of B material
The preparation of B material adopts the identical technique with A material to carry out granulation;
Second step: A expects to expect mixing granulation with B
Above-mentioned obtained A expected and B material equal proportion joins in parallel double-screw extruder and carries out melt blending and namely granulation obtains stuff and other stuff, extruder barrel temperature is 262-270 DEG C, and die head temperature is 265-275 DEG C, and screw speed is 250-550rpm;
3rd step: extrusion moulding
Adopt conical double screw extruder by the stuff and other stuff extrusion moulding of gained, obtain high-impact PVC/ASA tubing, extruder barrel temperature is 274-295 DEG C, and die head temperature is 285-315 DEG C;
4th step: aftertreatment
The high-impact PVC/ASA tubing of gained is cooled to 5-10 DEG C of sizings, then the tubing of sizing is cut by necessary requirement, finally the product of well cutting is packed, put into warehouse as ready.
The present invention has following beneficial effect:
The present invention, by optimizing further formula, makes the dispersion that can promote mineral filler in the course of processing of PVC, improves the mobility of PVC melt, tensile strength and elongation at break can also be promoted, change polyethylene products when using chlorinatedpolyethylene, good toughness, the shortcoming that hardness is low; In the present invention's formula after the compositions such as use acrylic ester impact-resisting modifier ACR, ACM, MBS, ASA resin, the cold-bending property of the tubing produced, impact resistance all increases.
Embodiment
Below in conjunction with embodiment, the present invention is described in further details.
Embodiment
The preparation method of high-impact PVC/ASA tubing comprises the following steps:
The preparation that the first step: A expects
Take off the raw material of row weight part: polyvinyl chloride SG-5 50, polyvinyl chloride reworked material 50, Calcium of intensifiens 20, ABS high glue powder 4, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 3, methyl methacrylate 0.3, acrylic ester impact-resisting modifier ACR 3, vinyltriethoxysilane 0.3, antioxidant 1010 0.4, polyethylene wax 0.3, pentanoic 0.2, modified Nano powder 8
Wherein, modified Nano powder is obtained by following method: after calcium carbonate, celestite powder, the mixing of feldspar in powder equal proportion, scaling loss 5 hours at 700 DEG C, then nanometer powder is ground to form, admix the Di(dioctylpyrophosphato) ethylene titanate agitating being equivalent to powder weight 3% even, dry, be ground into powder
The starting material weighed up are dropped into high-speed stirring 15 min in high-speed mixer, temperature is 80 DEG C, after its moisture content fully evaporates, through cold mixer, material is down to 40 DEG C, again above-mentioned compound is joined in parallel double-screw extruder carry out melt blending and granulation namely obtain A material, extruder barrel temperature is 255 DEG C, and die head temperature is 260 DEG C, and screw speed is 350rpm;
The preparation that second step: B expects
Take off the raw material of row weight part: polyvinyl chloride SG-5 50, ASA resin 20, bisphenol A polycarbonate 10, ACM 5, MBS 5, diisopropyl azodiformate 3, chlorinatedpolyethylene 15, phenyl triethoxysilane 0.3, two Lauryl Alcohol ester 0.2, oxidation inhibitor 1,035 0.3, ethylene bis stearamide 0.3, calcium stearate 3, attapulgite modified 8
Wherein, attapulgite modifiedly to be obtained by following method: first use 15% salt acid soak attapulgite 2 hours, leave standstill, clarification, centrifugal, solid washed with water is to neutral, and after oven dry, it is even to add the vinyltriethoxysilane agitating being equivalent to solid weight 3%, dry, be ground into powder
The starting material weighed up are dropped into high-speed stirring 15 min in high-speed mixer, temperature is 80 DEG C, after its moisture content fully evaporates, through cold mixer, material is down to 40 DEG C, again above-mentioned compound is joined in parallel double-screw extruder carry out melt blending and granulation namely obtain B material, extruder barrel temperature is 255 DEG C, and die head temperature is 260 DEG C, and screw speed is 350rpm;
3rd step: A expects to expect mixing granulation with B
Above-mentioned obtained A expected and B material equal proportion joins in parallel double-screw extruder and carries out melt blending and namely granulation obtains stuff and other stuff, extruder barrel temperature is 265 DEG C, and die head temperature is 270 DEG C, and screw speed is 420rpm;
4th step: extrusion moulding
Adopt conical double screw extruder by the stuff and other stuff extrusion moulding of gained, obtain high-impact PVC/ASA tubing, extruder barrel temperature is 290 DEG C, and die head temperature is 305 DEG C;
5th step: aftertreatment
The high-impact PVC/ASA tubing of gained is cooled to 5 DEG C of sizings, then the tubing of sizing is cut by necessary requirement, finally the product of well cutting is packed, put into warehouse as ready.
Contrast verification test result of the present invention is as following table:
Sequence number Test item and unit QB/T2480 index Common PVC tubing Sample in this enforcement
1 Outward appearance Inside and outside wall should be smooth, without surface imperfection such as depression and decomposition variable color lines Inside and outside wall is smooth, without surface imperfection such as depression and decomposition variable color lines Inside and outside wall is smooth, without surface imperfection such as depression and decomposition variable color lines
2 Tensile strength, Mpa ≥43 45 52
3 Elongation at break, % ≥80 108 125
4 Longitudinal welds, % ≤3.5 3.0 2.4
5 Vicat softening temperature, DEG C ≥75 81 88
6 Falling weight impact test (20 DEG C, 2kg, 2m), TIR ≤10% 6 1
As can be seen from the above table, compared with common PVC tubing, the tensile strength of the PVC/ASA tubing obtained by the present invention, elongation at break and shock resistance all increase, and meet QB/T2480 index, can be widely used in pipeline material required in building.

Claims (1)

1. a high-impact PVC/ASA tubing, is characterized in that, it is expected by A and B expects that equal proportion mixes extruding pelletization and is prepared from, and described A material, B material are obtained by the raw material extruding pelletization of following weight part respectively:
A expects:
Polyvinyl chloride SG-5 50-60, polyvinyl chloride reworked material 40-50, Calcium of intensifiens 20-30, ABS high glue powder 4-6, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 2-5, methyl methacrylate 0.2-0.4, acrylic ester impact-resisting modifier ACR 2-5, vinyltriethoxysilane 0.3-0.5, antioxidant 1010 0.4-0.6, polyethylene wax 0.3-0.5, pentanoic 0.1-0.3, modified Nano powder 5-10
Described modified Nano powder is obtained by following method: after calcium carbonate, celestite powder, the mixing of feldspar in powder equal proportion, scaling loss 4-5 hour at 600-700 DEG C, then nanometer powder is ground to form, admix the Di(dioctylpyrophosphato) ethylene titanate agitating being equivalent to powder weight 3-5% even, dry, be ground into powder;
B expects:
Polyvinyl chloride SG-5 50-60, ASA resin 20-30, bisphenol A polycarbonate 10-15, ACM 4-8, MBS 4-8, diisopropyl azodiformate 2-5, chlorinatedpolyethylene 10-20, phenyl triethoxysilane 0.3-0.5, two Lauryl Alcohol ester 0.1-0.3, oxidation inhibitor 1035 0.2-0.5, ethylene bis stearamide 0.3-0.5, calcium stearate 2-5, attapulgite modified 5-10
Described attapulgite modifiedly to be obtained by following method: first use 15-20% salt acid soak attapulgite 1-2 hour, leave standstill, clarification, centrifugal, solid washed with water is extremely neutral, after oven dry, add the vinyltriethoxysilane agitating being equivalent to solid weight 3-5% even, dry, be ground into powder;
The preparation method of described high-impact PVC/ASA tubing, comprises the following steps:
The first step: prepare A material, B material respectively
The preparation of A material
(1) take each formula material by formula rate, the starting material weighed up are dropped into high-speed stirring 10-15 min in high-speed mixer, and temperature is 80-90 DEG C, after its moisture content fully evaporates, through cold mixer, material is down to 40-50 DEG C;
(2) above-mentioned compound is joined in parallel double-screw extruder carry out melt blending and granulation namely obtain A material, extruder barrel temperature is 250-265 DEG C, and die head temperature is 253-275 DEG C, and screw speed is 220-550rpm;
Two, the preparation of B material
The preparation of B material adopts the identical technique with A material to carry out granulation;
Second step: A expects to expect mixing granulation with B
Above-mentioned obtained A expected and B material equal proportion joins in parallel double-screw extruder and carries out melt blending and namely granulation obtains stuff and other stuff, extruder barrel temperature is 262-270 DEG C, and die head temperature is 265-275 DEG C, and screw speed is 250-550rpm;
3rd step: extrusion moulding
Adopt conical double screw extruder by the stuff and other stuff extrusion moulding of gained, obtain high-impact PVC/ASA tubing, extruder barrel temperature is 274-295 DEG C, and die head temperature is 285-315 DEG C;
4th step: aftertreatment
The high-impact PVC/ASA tubing of gained is cooled to 5-10 DEG C of sizings, then the tubing of sizing is cut by necessary requirement, finally the product of well cutting is packed, put into warehouse as ready.
CN201210357271.3A 2012-09-24 2012-09-24 PVC (polyvinyl chloride)/ASA (acrylonitrile styrene acrylate) pipe with high impact resistance and method for preparing same Active CN102911456B (en)

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CN103602023A (en) * 2013-11-19 2014-02-26 青岛广联达精密机械有限公司 Formula of impact-resistant PVC (Polyvinyl Chloride) tubular product
CN104140617A (en) * 2014-08-07 2014-11-12 安徽玉发塑业有限公司 Aging-resistant PVC tubular product and preparation method thereof
CN104292686A (en) * 2014-09-04 2015-01-21 六安市顺达塑业有限公司 Wear-resistant PVC pipe and preparation method thereof
CN104804323A (en) * 2015-03-31 2015-07-29 太仓市晨洲塑业有限公司 PVC tubular product
CN105464884A (en) * 2015-11-14 2016-04-06 彭伟成 Rainwater power generator
CN107163453A (en) * 2017-07-20 2017-09-15 合肥安力电力工程有限公司 A kind of PVC and preparation method thereof
CN108162624A (en) * 2017-12-26 2018-06-15 浙江王斌装饰材料有限公司 A kind of PVC lines water transfer prepares processing technology

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CN1210345C (en) * 2003-03-18 2005-07-13 四川大学 Polyvinyl chloride reinforcing and tougheness improving modifier and preparation and application thereof
CN1272377C (en) * 2004-11-15 2006-08-30 四川大学 Polyvinyl chloride plasticizing enhanced agglomerate and its preparation method and use
CN100556952C (en) * 2006-11-27 2009-11-04 天津德昊超微新材料有限公司 The PVC/ micro-nano composite powder and its preparation method
CN101693778B (en) * 2009-10-13 2012-02-08 广东联塑科技实业有限公司 PVC/ABS blend and pipe thereof
CN102134360B (en) * 2011-05-10 2012-06-06 上海远洲管业有限公司 Preparation method of super-strong high temperature-resistant chlorinated polyvinyl chloride tubes
CN102766302A (en) * 2012-08-13 2012-11-07 青岛海洋鲨科技有限公司 Formula for plastic pipe acrylonitrile butadiene styrene (ABS) modified hard chlorinated polyvinyl chloride and pipe preparation method

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Patentee before: Wang Yajun