CN106633484A - Preparation method of heat-resistant polyvinyl chloride used for corrugated pipe - Google Patents

Preparation method of heat-resistant polyvinyl chloride used for corrugated pipe Download PDF

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Publication number
CN106633484A
CN106633484A CN201610928567.4A CN201610928567A CN106633484A CN 106633484 A CN106633484 A CN 106633484A CN 201610928567 A CN201610928567 A CN 201610928567A CN 106633484 A CN106633484 A CN 106633484A
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China
Prior art keywords
parts
polyvinyl chloride
preparation
heat
mixture
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Pending
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CN201610928567.4A
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Chinese (zh)
Inventor
周月华
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Wuxi Yongxing Metal Hose Co Ltd
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Wuxi Yongxing Metal Hose Co Ltd
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Priority to CN201610928567.4A priority Critical patent/CN106633484A/en
Publication of CN106633484A publication Critical patent/CN106633484A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/004—Additives being defined by their length
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

The invention provides a preparation method of heat-resistant polyvinyl chloride used for corrugated pipes. The preparation method includes the steps of: mixing styrene butadiene rubber, a methyl ester-butadiene-styrene copolymer, dibutyl phthalate, white carbon black, anhydrous calcium sulfate, silicon sol, and aluminum borate; feeding the mixture into a twin-screw extruder, and performing melt extrusion granulation, rotational speed of screw rods being 150-180 r/min and temperature being 200-220 DEG C; mixing the granules with PVC, sodium pyrophosphate, nano titanium dioxide, polystyrene granules and aluminum silicate fibers to obtain a mixture B; feeding the mixture B into a single-screw extruder, and performing melt extrusion granulation at 175-180 DEG C. The polyvinyl chloride has excellent heat resistance and is excellent in tensile property and anti-shock performance.

Description

A kind of preparation method of heat-resisting bellows polyvinyl chloride
Technical field
The invention belongs to technical field of polymer materials, and in particular to a kind of preparation of heat-resisting bellows polyvinyl chloride Method.
Background technology
Polyvinyl chloride（PVC）It is one of principal item of general-purpose plastics, yield is only second to polyethylene, occupies second.PVC materials Material has that fire retardant, corrosion-resistant, electrical insulating property is good, the transparency is good, it is with low cost the features such as, various additives and can be made by addition Different properties, broad-spectrum soft or hard product are obtained with various forming methods, construction material is widely used in（As moulded Steel casement door window and downpipe）, packaging material（Food service industry and tobacco business）, electronic material, agricultural materials（Awning film）, medical material Material（Woven hose and infusion bag etc.）With daily necessities material, in industry, agricultural, building, communications and transportation, electric power, telecommunication and bag Each fields such as dress.
Polyvinyl chloride resin is although of many uses, but the heat endurance of resin is poor, and being heated in process can occur by active site The self-catalysis dehydrochlorination reaction of initiation, forms the more dilute chain of conjugation, and and then there is chain rupture, crosslinking etc. and react and change colour, degrade, Plastic products quality is caused to be deteriorated, hydraulic performance decline.
PVC pipelines are the most long plastic pipes of usage history（More than 70 years）, but due to polyvinyl chloride resin poor heat resistance, Cause it using being extremely restricted.
The content of the invention
The technical problem of solution：The purpose of the present invention is to overcome the deficiencies in the prior art and provide a kind of heat-resisting bellows With the preparation method of polyvinyl chloride, gained polyvinyl chloride not only has good heat resistance, also with excellent tensile property And erosion-resisting characteristics.
Technical scheme：A kind of preparation method of heat-resisting bellows polyvinyl chloride, comprises the following steps：
Step 1, in parts by weight, by butadiene-styrene rubber 2-6 parts, methyl esters-BS 0.8-3.2 parts, adjacent benzene two Formic acid dibutyl ester 0.3-1.2 parts, white carbon 0.1-0.5 parts, dead plaster 0.2-0.6 parts, Ludox 0.1-0.5 parts, boric acid Aluminium 0.2-0.6 parts mix, and obtain mixture A；
Step 2, imports double screw extruder, under the conditions of screw speed 150-180rpm, temperature 200-220 DEG C by mixture A Melting extrusion is granulated；
Step 3, in parts by weight, by step 2 gained particle 0.8-1.5 parts and PVC 3-6 parts, sodium pyrophosphate 0.2-0.6 parts, receives Rice titanium dioxide 0.2-0.4 parts, granules of polystyrene 0.1-0.5 parts, the mixing of alumina silicate fibre 0.2-0.6 parts, obtain mixture B；
Step 4, by mixture B single screw extrusion machine is imported, and hot-melt extruded granulation, obtains final product at 175-180 DEG C.
Further, the solid content of the Ludox is in 25-35%.
Further, the length of the alumina silicate fibre in 100-200 microns, diameter in 50-60 microns.
Further, the granularity of the nano titanium oxide is in 200-400nm.
Further, in step 1 mixing temperature at 80-150 DEG C.
Further, in step 3 mixing temperature at 100-120 DEG C.
Beneficial effect：The polyvinyl chloride of the present invention not only has good heat resistance, also with excellent tensile property And erosion-resisting characteristics.
Specific embodiment
Embodiment 1
A kind of preparation method of heat-resisting bellows polyvinyl chloride, comprises the following steps：
Step 1, in parts by weight, by 2 parts of butadiene-styrene rubber, 0.8 part of methyl esters-BS, phthalic acid two 0.3 part of butyl ester, 0.1 part of white carbon, 0.2 part of dead plaster, 0.1 part of Ludox, 0.2 part of mixing of aluminium borate, obtain mixture A；
Step 2, by mixture A double screw extruder, the melting extrusion under the conditions of screw speed 150rpm, 220 DEG C of temperature are imported Granulation；
Step 3, in parts by weight, by 0.8 part of step 2 gained particle and 3 parts of PVC, 0.2 part of sodium pyrophosphate, nano titanium oxide 0.2 part, 0.1 part of granules of polystyrene, the mixing of 0.2 part of alumina silicate fibre, obtain mixture B；
Step 4, by mixture B single screw extrusion machine is imported, and hot-melt extruded granulation, obtains final product at 175 DEG C.
Wherein, the solid content of the Ludox is 25%；The length of the alumina silicate fibre 100 microns, diameter it is micro- 50 Rice；The granularity of the nano titanium oxide is in 200nm；Mixing temperature is at 80 DEG C in step 1；Mixing temperature is 100 in step 3 ℃。
Embodiment 2
A kind of preparation method of heat-resisting bellows polyvinyl chloride, comprises the following steps：
Step 1, in parts by weight, by 4 parts of butadiene-styrene rubber, 1.5 parts of methyl esters-BS, phthalic acid two 0.6 part of butyl ester, 0.3 part of white carbon, 0.5 part of dead plaster, 0.4 part of Ludox, 0.4 part of mixing of aluminium borate, obtain mixture A；
Step 2, by mixture A double screw extruder, the melting extrusion under the conditions of screw speed 160rpm, 210 DEG C of temperature are imported Granulation；
Step 3, in parts by weight, by 1.2 parts of step 2 gained particle and 4 parts of PVC, 0.5 part of sodium pyrophosphate, nano titanium oxide 0.3 part, 0.2 part of granules of polystyrene, the mixing of 0.4 part of alumina silicate fibre, obtain mixture B；
Step 4, by mixture B single screw extrusion machine is imported, and hot-melt extruded granulation, obtains final product at 175 DEG C.
Wherein, the solid content of the Ludox is 30%；The length of the alumina silicate fibre 150 microns, diameter it is micro- 55 Rice；The granularity of the nano titanium oxide is in 300nm；Mixing temperature is at 120 DEG C in step 1；Mixing temperature is 100 in step 3 ℃。
Embodiment 3
A kind of preparation method of heat-resisting bellows polyvinyl chloride, comprises the following steps：
Step 1, in parts by weight, by 5 parts of butadiene-styrene rubber, 1.7 parts of methyl esters-BS, phthalic acid two 0.9 part of butyl ester, 0.4 part of white carbon, 0.5 part of dead plaster, 0.4 part of Ludox, 0.5 part of mixing of aluminium borate, obtain mixture A；
Step 2, by mixture A double screw extruder, the melting extrusion under the conditions of screw speed 170rpm, 220 DEG C of temperature are imported Granulation；
Step 3, in parts by weight, by 1.3 parts of step 2 gained particle and 5 parts of PVC, 0.5 part of sodium pyrophosphate, nano titanium oxide 0.3 part, 0.4 part of granules of polystyrene, the mixing of 0.5 part of alumina silicate fibre, obtain mixture B；
Step 4, by mixture B single screw extrusion machine is imported, and hot-melt extruded granulation, obtains final product at 175 DEG C.
Wherein, the solid content of the Ludox is 25%；The length of the alumina silicate fibre 100 microns, diameter it is micro- 50 Rice；The granularity of the nano titanium oxide is in 200nm；Mixing temperature is at 80 DEG C in step 1；Mixing temperature is 100 in step 3 ℃。
Embodiment 4
A kind of preparation method of heat-resisting bellows polyvinyl chloride, comprises the following steps：
Step 1, in parts by weight, by 6 parts of butadiene-styrene rubber, 3.2 parts of methyl esters-BS, phthalic acid two 1.2 parts of butyl ester, 0.5 part of white carbon, 0.6 part of dead plaster, 0.5 part of Ludox, 0.6 part of mixing of aluminium borate, obtain mixture A；
Step 2, by mixture A double screw extruder, the melting extrusion under the conditions of screw speed 180rpm, 200 DEG C of temperature are imported Granulation；
Step 3, in parts by weight, by 1.5 parts of step 2 gained particle and 6 parts of PVC, 0.6 part of sodium pyrophosphate, nano titanium oxide 0.4 part, 0.5 part of granules of polystyrene, the mixing of 0.6 part of alumina silicate fibre, obtain mixture B；
Step 4, by mixture B single screw extrusion machine is imported, and hot-melt extruded granulation, obtains final product at 180 DEG C.
Wherein, the solid content of the Ludox is 35%；The length of the alumina silicate fibre 200 microns, diameter it is micro- 60 Rice；The granularity of the nano titanium oxide is in 400nm；Mixing temperature is at 150 DEG C in step 1；Mixing temperature is 120 in step 3 ℃。
After testing, the tensile strength of the gained of embodiment 1 to 4 polyvinyl chloride in 92-100MPa, impact strength in 3.5-4.2kJ/ m2, vicat softening temperature is at 72-80 DEG C.

Claims (6)

1. a kind of preparation method of heat-resisting bellows polyvinyl chloride, it is characterised in that：Comprise the following steps：
Step 1, in parts by weight, by butadiene-styrene rubber 2-6 parts, methyl esters-BS 0.8-3.2 parts, adjacent benzene two Formic acid dibutyl ester 0.3-1.2 parts, white carbon 0.1-0.5 parts, dead plaster 0.2-0.6 parts, Ludox 0.1-0.5 parts, boric acid Aluminium 0.2-0.6 parts mix, and obtain mixture A；
Step 2, imports double screw extruder, under the conditions of screw speed 150-180rpm, temperature 200-220 DEG C by mixture A Melting extrusion is granulated；
Step 3, in parts by weight, by step 2 gained particle 0.8-1.5 parts and PVC 3-6 parts, sodium pyrophosphate 0.2-0.6 parts, receives Rice titanium dioxide 0.2-0.4 parts, granules of polystyrene 0.1-0.5 parts, the mixing of alumina silicate fibre 0.2-0.6 parts, obtain mixture B；
Step 4, by mixture B single screw extrusion machine is imported, and hot-melt extruded granulation, obtains final product at 175-180 DEG C.
2. the preparation method of heat-resisting bellows polyvinyl chloride according to claim 1, it is characterised in that：The silicon is molten The solid content of glue is in 25-35%.
3. the preparation method of heat-resisting bellows polyvinyl chloride according to claim 1, it is characterised in that：The silicic acid The length of aluminum fiber is in 100-200 microns, diameter in 50-60 microns.
4. the preparation method of heat-resisting bellows polyvinyl chloride according to claim 1, it is characterised in that：The nanometer The granularity of titanium dioxide is in 200-400nm.
5. the preparation method of heat-resisting bellows polyvinyl chloride according to claim 1, it is characterised in that：In step 1 Mixing temperature is at 80-150 DEG C.
6. the preparation method of heat-resisting bellows polyvinyl chloride according to claim 1, it is characterised in that：In step 3 Mixing temperature is at 100-120 DEG C.
CN201610928567.4A 2016-10-31 2016-10-31 Preparation method of heat-resistant polyvinyl chloride used for corrugated pipe Pending CN106633484A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019038164A (en) * 2017-08-24 2019-03-14 信越ポリマー株式会社 Polyvinyl chloride resin-made wrapping film and method for producing the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102977498A (en) * 2012-12-04 2013-03-20 安徽康嘉塑胶建材有限公司 Polyvinyl chloride (PVC) composite electrical sleeve
CN104650501A (en) * 2015-02-09 2015-05-27 杭州波达塑料科技股份有限公司 High-temperature-resistant high-toughness PVC-U (unplasticized polyvinyl chloride) double-wall corrugated pipe and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102977498A (en) * 2012-12-04 2013-03-20 安徽康嘉塑胶建材有限公司 Polyvinyl chloride (PVC) composite electrical sleeve
CN104650501A (en) * 2015-02-09 2015-05-27 杭州波达塑料科技股份有限公司 High-temperature-resistant high-toughness PVC-U (unplasticized polyvinyl chloride) double-wall corrugated pipe and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019038164A (en) * 2017-08-24 2019-03-14 信越ポリマー株式会社 Polyvinyl chloride resin-made wrapping film and method for producing the same

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Application publication date: 20170510