CN106633543A - Nanometer TiO2-modified polytrifluoroethylene and preparation method thereof - Google Patents

Nanometer TiO2-modified polytrifluoroethylene and preparation method thereof Download PDF

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Publication number
CN106633543A
CN106633543A CN201710020060.3A CN201710020060A CN106633543A CN 106633543 A CN106633543 A CN 106633543A CN 201710020060 A CN201710020060 A CN 201710020060A CN 106633543 A CN106633543 A CN 106633543A
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CN
China
Prior art keywords
trifluoro
ethylene
poly
tio
nano
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710020060.3A
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Chinese (zh)
Inventor
杨文光
支永潮
陈佩民
靳予
孙克原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANJING COMPTECH NEW MATERIAL CO Ltd
Nanjing Kent Composites Ltd By Share Ltd
Original Assignee
NANJING COMPTECH NEW MATERIAL CO Ltd
Nanjing Kent Composites Ltd By Share Ltd
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Publication date
Application filed by NANJING COMPTECH NEW MATERIAL CO Ltd, Nanjing Kent Composites Ltd By Share Ltd filed Critical NANJING COMPTECH NEW MATERIAL CO Ltd
Priority to CN201710020060.3A priority Critical patent/CN106633543A/en
Publication of CN106633543A publication Critical patent/CN106633543A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • 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
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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

Abstract

The invention discloses a nanometer TiO2-modified polytrifluoroethylene composite material, which is characterized by being formed by the binary combination of nanometer TiO2 and polytrifluoroethylene, and the percentage by mass of the nanometer TiO2 and the polytrifluoroethylene is 1 percent to 10 percent. The invention also discloses a preparation method for the nanometer TiO2-modified polytrifluoroethylene, which includes the following steps: (A) primary vacuum drying; (B) high-speed mixing; (C) extrusion and pelletization; (D) secondary vacuum drying; (E) injection molding. Since the invention adopts the nanometer TiO2 as modification filling for the polytrifluoroethylene, under the premise of not changing the original process, the prepared nanometer TiO2-modified polytrifluoroethylene has good elasticity, cannot be easily broken, and can resist stretching and bending, the strength is higher, the friction coefficient of resin surface is decreased, and the abrasive resistance is enhanced.

Description

Nano-TiO2Be modified poly- trifluoro-ethylene and preparation method thereof
Technical field
The present invention relates to nano-TiO2Be modified poly- trifluoro-ethylene and preparation method thereof, belongs to field of compound material.
Background technology
Poly- trifluoro-ethylene is crystalline macromolecule, and fusing point is 425F, and density is 2.13g/cc (gram/cc). It is inert to most of active chemicals under room temperature, and can be dissolved by a few solvent in more than 212T, with high temperature resistant, Low temperature resistant the characteristics of, nonflammable, good toughness is widely used in encapsulant and packing material.But with other thermoplastics Compare, poor with mechanical performance, linear expansion coefficient is larger, molding shrinkage is big, the shortcomings of wear resistance difference, to a certain extent Limit its application.TiO2 and poly- trifluoro-ethylene are each advantageous, but both is combined, and have the material of both advantages concurrently Material not yet finds at present.Nano titanium oxide, is a kind of new inorganic functional material, due to its particle diameter 1 to 100nm it Between, with particle diameter it is little, specific surface area is big, surface-active is high, good dispersion the features such as, show uniqueness physicochemical properties, It is set to have broad application prospects in environment, material, the energy, medical treatment and health field.Use nano-TiO2Be modified poly- trifluoro second Alkene improves the wearability of resin, nano-TiO reducing the coefficient of friction of resin surface2The machinery of poly- trifluoro-ethylene can also be strengthened Intensity.
The content of the invention
The poly- trifluoro-ethylene it is an object of the invention to provide a kind of nano TiO 2 is modified, with it is good elasticity, not easy fracture, Stretch-proof and bending, intensity is high, reduces the coefficient of friction of resin surface, improves the wearability of resin.
To reach above-mentioned purpose, the technical solution used in the present invention is：A kind of nano TiO 2 is modified poly- trifluoro-ethylene, by receiving Rice TiO2It is compound with poly- trifluoro-ethylene binary to constitute, the nano-TiO2It is with poly- trifluoro-ethylene mass percent：1%-10%.
Further, the nano-TiO2It is with poly- trifluoro-ethylene mass percent：5%.
Present invention also offers above-mentioned nano-TiO2The preparation method of modified poly- trifluoro-ethylene, its step includes：
A, once it is vacuum dried：Poly- trifluoro-ethylene powder is vacuum dried using vacuum drying chamber；
B, mixed at high speed：Using high-speed mixer to poly- trifluoro-ethylene powder and TiO2Powder carries out batch mixing, so that poly- three PVF powder and TiO2Powder homogeneous blend, the nano-TiO of addition2It is with poly- trifluoro-ethylene mass percent：1%-10%.；
C, extruding pelletization：Using twin screw compounding extruder to the poly- trifluoro-ethylene powder after mixed at high speed step process End and TiO2The mixed material of powder carries out extruding pelletization, forms extrusion dispensing, then extrusion dispensing is placed on into cooling in normal-temperature water To normal temperature, then by the extrusion dispensing pelletizing after cooling；
D, secondary vacuum are dried：Vacuum drying treatment is carried out to granule materials using vacuum drying chamber；
E, injection mo(u)lding：Using conventional injection moulding process, the granule materials after secondary vacuum dried process are made into symbol Close desired shape.
Further, vacuum drying temperature is 120 DEG C in step A, and the time is 2h.
Further, rotating speed 1450r/min is selected in the step B during batch mixing, is mixed into uniform.
Further, secondary vacuum baking temperature is 100 DEG C in step D, and the time is 24h.
Further, the injection pressure of injection mo(u)lding is 105kg in step E, and the injection dwell time is 50 seconds, storing Pressure is 105kg, and storing speed is 60cm3/s, and baking material temperature is 160 DEG C, and mould temperature is 180 DEG C, and nozzle temperature is 325 DEG C, plus One section of temperature is 270 DEG C when hot, and two sections of temperature are 290 DEG C, and three sections of temperature are 320 DEG C, and four sections of temperature are 320 DEG C；Dwell pressure For 105kg；Cool time is 60 seconds.
The present invention adopts nano-TiO2As the modified filler of poly- trifluoro-ethylene, on the premise of original technique is not changed, Obtained nano-TiO2The poly- trifluoro-ethylene that is modified has elasticity, not easy fracture, stretch-proof and bending well, and intensity is higher, drop The coefficient of friction of low resin surface, improve its wearability.
Specific embodiment
Embodiment 1
This nano-TiO2The preparation method of modified poly- trifluoro-ethylene, its step includes：
A, once it is vacuum dried：Poly- trifluoro-ethylene powder is vacuum dried using vacuum drying chamber, vacuum drying temperature Spend for 120 DEG C, the time is 2h；
B, mixed at high speed：Using high-speed mixer to poly- trifluoro-ethylene powder and TiO2Powder carries out batch mixing, so that poly- three PVF powder and TiO2Powder homogeneous blend, selects rotating speed 1450r/min during batch mixing, be mixed into uniform, the nano-TiO of addition2 It is with poly- trifluoro-ethylene mass percent：2%；
C, extruding pelletization：Using twin screw compounding extruder to the poly- trifluoro-ethylene powder after mixed at high speed step process End and TiO2The mixed material of powder carries out extruding pelletization, forms extrusion dispensing, then extrusion dispensing is placed on into cooling in normal-temperature water To normal temperature, then by the extrusion dispensing pelletizing after cooling；
D, secondary vacuum are dried：Vacuum drying treatment, vacuum drying temperature are carried out to granule materials using vacuum drying chamber For 100 DEG C, the time is 24h；
E, injection mo(u)lding：Using conventional injection moulding process, the granule materials after secondary vacuum dried process are made into symbol Desired shape is closed, the injection pressure of injection mo(u)lding is 105kg, and the injection dwell time is 50 seconds, and stock pressure is 105kg, storage Material speed is 60cm3/s, and baking material temperature is 160 DEG C, and mould temperature is 180 DEG C, and nozzle temperature is 325 DEG C, and one section of temperature is during heating 270 DEG C, two sections of temperature are 290 DEG C, and three sections of temperature are 320 DEG C, and four sections of temperature are 320 DEG C；Dwell pressure is 105kg；During cooling Between be 60 seconds.
Embodiment 2
This nano-TiO2The preparation method of modified poly- trifluoro-ethylene, its step is basically identical with embodiment 1, and difference is step The nano-TiO added in rapid B2It is 6% with poly- trifluoro-ethylene mass percent.Obtained nano-TiO2Modified poly- trifluoro-ethylene is surveyed Test result is shown in Table 1.
Embodiment 3
This nano-TiO2The preparation method of modified poly- trifluoro-ethylene, its step is basically identical with embodiment 1, and difference is step The nano-TiO added in rapid B2It is 10% with poly- trifluoro-ethylene mass percent.Obtained nano-TiO2Modified poly- trifluoro-ethylene is surveyed Test result is shown in Table 1.
Comparative example 1
This nano-TiO2The preparation method of modified poly- trifluoro-ethylene is consistent with embodiment, and the addition of each component is：Poly- three 95 parts of PVF, nano-TiO25 parts.To obtained nano-TiO2The poly- trifluoro-ethylene resin that is modified carries out performance test, test result It is shown in Table 1.
Remarks：Friction-wear test condition：Initial load 196N, rotating speed 200r/min, dry friction 2h.To emery wheel：45 steel, 42-45HRC。

Claims (6)

1. a kind of nano-TiO2Be modified poly- trifluoro-ethylene, it is characterised in that：By nano-TiO2With the compound structure of poly- trifluoro-ethylene binary Into the nano-TiO2It is with poly- trifluoro-ethylene mass percent：1%-10%.
2. the nano-TiO described in a claim 12The preparation method of modified poly- trifluoro-ethylene, its step includes：
A, once it is vacuum dried：Poly- trifluoro-ethylene powder is vacuum dried using vacuum drying chamber；
B, mixed at high speed：Using high-speed mixer to poly- trifluoro-ethylene powder and TiO2Powder carries out batch mixing, so that poly- trifluoro-ethylene Powder and TiO2 powder homogeneous blends, the nano-TiO of addition2It is with poly- trifluoro-ethylene mass percent：1%-10%.；
C, extruding pelletization：Using twin screw compounding extruder to the poly- trifluoro-ethylene powder after mixed at high speed step process with The mixed material of TiO2 powder carries out extruding pelletization, forms extrusion dispensing, then extrusion dispensing is placed in normal-temperature water and is cooled to often Temperature, then by the extrusion dispensing pelletizing after cooling；
D, secondary vacuum are dried：Vacuum drying treatment is carried out to granule materials using vacuum drying chamber；
E, injection mo(u)lding：Using conventional injection moulding process, the granule materials after secondary vacuum dried process are made and is conformed to The shape asked.
3. nano-TiO according to claim 22The preparation method of modified poly- trifluoro-ethylene, it is characterised in that：Step A Middle vacuum drying temperature is 120 DEG C, and the time is 2h.
4. nano-TiO according to claim 32The preparation method of modified poly- trifluoro-ethylene, it is characterised in that：Step B Rotating speed 1450r/min is selected during middle batch mixing, is mixed into uniform.
5. according to the nano-TiO described in claim 42The preparation method of modified poly- trifluoro-ethylene, it is characterised in that：The step Secondary vacuum baking temperature is 100 DEG C in rapid D, and the time is 24h.
6. according to the nano-TiO described in claim 52The preparation method of modified poly- trifluoro-ethylene, it is characterised in that：The step The injection pressure of injection mo(u)lding is 105kg in rapid E, and the injection dwell time is 50 seconds, and stock pressure is 105kg, and storing speed is 60cm3/s, baking material temperature is 160 DEG C, and mould temperature is 180 DEG C, and nozzle temperature is 325 DEG C, and one section of temperature is 270 DEG C during heating, two Duan Wendu is 290 DEG C, and three sections of temperature are 320 DEG C, and four sections of temperature are 320 DEG C；Dwell pressure is 105kg；Cool time is 60 seconds.
CN201710020060.3A 2017-01-06 2017-01-06 Nanometer TiO2-modified polytrifluoroethylene and preparation method thereof Pending CN106633543A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112795155A (en) * 2020-12-30 2021-05-14 重庆和泰润佳股份有限公司 Biodegradable film, preparation method thereof and sanitary towel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61261396A (en) * 1985-05-16 1986-11-19 Daido Metal Kogyo Kk Sliding material having excellent frictional properties
CN1641003A (en) * 2003-12-25 2005-07-20 大丰工业株式会社 Sliding material comprising flat fluoroplastic particles and binder resin
CN101629004A (en) * 2009-07-30 2010-01-20 上海交通大学 Preparation method of rare earth modified nano TiO2/polytetrafluoroethylene composite
CN101712784A (en) * 2009-10-29 2010-05-26 西安交通大学 Nuclear shell structured packing/polymer-based composite material and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61261396A (en) * 1985-05-16 1986-11-19 Daido Metal Kogyo Kk Sliding material having excellent frictional properties
CN1641003A (en) * 2003-12-25 2005-07-20 大丰工业株式会社 Sliding material comprising flat fluoroplastic particles and binder resin
CN101629004A (en) * 2009-07-30 2010-01-20 上海交通大学 Preparation method of rare earth modified nano TiO2/polytetrafluoroethylene composite
CN101712784A (en) * 2009-10-29 2010-05-26 西安交通大学 Nuclear shell structured packing/polymer-based composite material and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
陈炎嗣: "《模具工基础知识问答》", 30 June 2013, 机械工业出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112795155A (en) * 2020-12-30 2021-05-14 重庆和泰润佳股份有限公司 Biodegradable film, preparation method thereof and sanitary towel

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Application publication date: 20170510