CN106633395A - Preparation method for modified polypropylene compound reinforcing and toughening plate - Google Patents
Preparation method for modified polypropylene compound reinforcing and toughening plate Download PDFInfo
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- CN106633395A CN106633395A CN201611157319.0A CN201611157319A CN106633395A CN 106633395 A CN106633395 A CN 106633395A CN 201611157319 A CN201611157319 A CN 201611157319A CN 106633395 A CN106633395 A CN 106633395A
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
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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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
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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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5808—Measuring, controlling or regulating pressure or compressing force
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5816—Measuring, controlling or regulating temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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Abstract
The invention relates to a preparation method for a modified polypropylene compound reinforcing and toughening plate. The modified polypropylene compound reinforcing and toughening plate comprises the following components by mass: 50-80 parts of the polypropylene, 5-20 parts of graphene powder, and 8-20 parts of carbon fiber, and further comprises the following components: 1-2.2 parts of organic chromium complex, 0.4-7.4 parts of a graft phase solvent of unsaturated carboxylic acid and the polypropylene, 0.6-1.6 parts of a maleic anhydride phase solvent, 1-1.8 parts of tin acid ester and 1-4 parts of thiodipropionic acid diester. The preparation method comprises the following steps: firstly executing the surface treatment to the graphene powder and the carbon fiber, mixing the polypropylene, the graft phase solvent of the unsaturated carboxylic acid and the polypropylene, the thiodipropionic acid diester and the graphene powder after the surface treatment in high speed to form a graphite/PP mixed material, and extruding the graphite/PP mixed material and the dried glass fiber to obtain modified graphene reinforcing PP particles and drying, extruding and melting the modified graphene reinforcing PP particles, pressing, and processing to form the shape. The prepared plate has good heat resistance and pressure resistance.
Description
Technical field
The present invention relates to composite polypropylene board manufacture field, and in particular to one kind can be widely used in chemical industry, environmental protection, smelting
The industry high temperature resistant such as gold, pressure, corrosion resistance PP composite material sheet material preparation method.
Background technology
Existing frequently-used filter press sheet material is made up of polypropylene and its calcium carbonate, talcum powder or carbon fiber etc., is being changed
Obvious apparent fitness value is not strong in especially strong to high temperature, the resistance to chemical attack separation of solid and liquid of the industries such as work, with maintenance cost it is high,
The shortcomings of service life is short.For such case, the country begins one's study polypropylene composite materials as filter press sheet material material
Material, due to graphite material compared with other mineral based materials with excellent heat-resisting, corrosion-resistant and strengthen performance, thus become
The important source material of polypropylene composite materials.At present have some for graphite modified polypropylene material research, exploitation and
Patent literature, explores and new product development as a kind of new material research, and graphite modified polypropylene tubulation has successfully been utilized
Formula reactor substitutes glassed steel reaction vessels, and research and development graphite modified polypropylene as chemical reaction column plate, heat exchanger, radiating
Make modifying agent only with graphite in device etc., but these materials, improved the performances such as polyacrylic heat transfer, conduction, but conduct
The performances such as filter press sheet material its intensity are substantially low, and it is new to be directed to the graphite modified RPP needed for filter press sheet material
Investigation of materials application aspect still belongs to blank, result in existing polypropylene board in heat resistance, corrosion resistance and high pressure resistant has
Carry out during waste liquid or raw material solid-liquid pressure-filtering are separated that its performance is substantially not enough under high requirement, have impact on its range of application, while its
Service life is shorter, and cost is also greatly increased.
The content of the invention
In order to realize overcoming the shortcomings of that existing polypropylene material makes filter press sheet material, the invention provides a kind of intensity
The high, preparation method of the polypropylene composite materials sheet material of function admirable.
The technical solution used in the present invention is：
A kind of preparation method of modified polypropene composite strengthening toughness reinforcing sheet material disclosed by the invention, comprises the following steps：
（1）Each raw material is weighed by mass fraction：50～80 parts of polypropylene, 5 ~ 20 parts of Graphene powder, 8 ~ 20 parts of carbon fiber, Organic Chromium
1～2.2 part of complex compound, unsaturated carboxylic acid and 0.4～7.4 part of polyacrylic graft phase solvent, maleic anhydride phase solvent 0.6～
1.6 parts, 1～1.8 part of stannic acid fat, 1～4 part of thio-2 acid dibasic acid esters；
（2）Graphene powder is carried out into high speed thermal agitation, organochromium complexes is put into and go out after being surface-treated in Graphene powder
Material；
（3）Dry carbon fiber is carried out into surface wet and in 90～140 DEG C of hot blasts by maleic anhydride phase solvent and stannic acid fat
The lower drying of circulation；
（4）By polypropylene, unsaturated carboxylic acid and polyacrylic graft phase solvent, thio-2 acid dibasic acid esters and step（2）Jing
Graphene powder after surface treatment is added successively in high-speed mixer and carries out high-speed stirred and forms Graphene/polypropylene mixing
Material；
（5）By step（4）Middle Graphene/polypropylene mixture and step（3）Carbon fiber after middle drying is carried out in an extruder
Melting, shearing, mixing, homogenizing, and the modified RPP particle of Graphene is obtained after tie rod and cooling, pelletizing；
（6)）By step（5）The modified RPP particle of the Graphene of middle gained carries out preheating and drying, by dried graphite
The modified RPP particle of alkene carries out melt extrusion, and the melt of extrusion is positioned over incubator inside holding；
（7）Plate moulding machine, mould are preheated, by step（6）The middle extrusion melt input sheet material mould through insulation
Press is pressed into the demoulding after plate blank, then plate blank is put in forming machine and is cooled down, then plate blank is taken out into placement
Carry out flattening after stress ageging process in warm water, and keep flat at normal temperatures；
（8）Plate blank is processed into into sheet material finished product.
The step（2）Middle Graphene powder carries out thermal agitation in high-speed mixer, and the temperature of Graphene powder thermal agitation is
60～90 DEG C, the time of Graphene powder thermal agitation is 10～20min；Graphite when organochromium complexes are thrown in the Graphene powder
Alkene powder temperature is 85～120 DEG C；The surface treatment temperature is 85～135 DEG C, and the time is 10～20min；
The step（4）High speed mixing time is 8～15 minutes.
The step（5）The extrusion temperature of middle extruder is 170～250 DEG C, and extruded velocity is 250～350rpm.
Preheating and drying temperature is 60～100 DEG C in the step (6), and the time is 24～48 hours；Melt extrusion temperature is
170～260 DEG C, extruded velocity is 800～1200rpm；Incubator temperature is 80～150 DEG C.
The step（7）The mould preheating of middle plate moulding machine is heated using steam, and temperature is 30～80 DEG C, sheet material
The briquetting pressure of moulding press is 10～20MPa, and the compacting dwell time is 0.5 ~ 2 hour；In the forming machine cool time be 72 ~
96 hours；The leveling stress ageging is processed to be carried out in 40～80 DEG C of warm water, and process time is 72～96 hours；It is described
The time of keeping flat is at least more than 120 hours.
The invention has the beneficial effects as follows：
（1）The present invention is modified using the composite strengthening of Graphene powder foot couple carbon fiber/polypropylene, using the mechanics that Graphene is excellent
Performance, in being added to polymeric matrix, improves well the mechanical property of material, further enhances heat-resisting, the machinery of sheet material
The function of performance and corrosion resistance, imparts in various degree sheet material excellent under the conditions of high temperature, high pressure, deep-etching is adapted to
Overall characteristic；
（2）The present invention is using double screw extruder extruding pelletization, the mixing melting extrusion of single screw extrusion machine multistage, high-pressure molding work
The multistage aging treatment process such as Stress Release after skill and plate forming, effectively eliminates due to PP composite material sheet material
Internal stress is produced in processing and forming, it is ensured that the stabilized structure of sheet material, excellent performance, reuse bar temperature, pressure, the chemical attack more
There is higher adaptability under part.
（3）Product high temperature resistant of the present invention, high-voltage performance strengthen, heat resistance than conventional sheet by larger raising, using model
Enclose wider, with more higher than existing filter press sheet material chemical resistance, under the conditions of higher temperature, elevated pressures, sheet material
Long service life, reduces maintenance cost.
（4）The cost performance of the sheet material of the present invention is high, can recycling completely, accomplish pollution-free in links.
In sum, graphite modified reinforced polypropylene compound material of the invention is compared with existing common sheet material, with resistance to
High temperature, resistance to chemical corrosion and excellent physical mechanical performance.Under the formula composition and preparation process condition that pass through optimization, plate
Material heat resistance can reach 120～180 DEG C, tensile strength up to 35～45MPa, 40～52MPa of bending strength, impact strength is 10～
14.8KJ/m2, 1～2.5MPa of filter pressure, its life-span can extend 1～3 year than existing sheet material, and make filter press expand application
Scope, therefore research and develop and graphite modified polypropylene composite and prepare its filter press sheet material, with larger using value and
Meaning, is the invention being worthy of popularization.
Specific embodiment
Below by specific embodiment, the characteristics of further illustrate the present invention
Embodiment 1：
（1）Dispensing：Each component raw material is weighed by following quality：13g Graphene powders, 68g polypropylene, 15g carbon fibers, 2.8g PP-
G-MAH phase solvents, 1.2g maleic anhydride phase solvents, 2.4g organochromium complexes, 0.6g stannic acid fat, 3g thio-2 acid dibasic acid esters；
（2）First Graphene powder and carbon fiber are surface-treated respectively, by Graphene powder when high-speed mixer reaches 80 DEG C
Input wherein carries out thermal agitation, and the thermal agitation time is 15min, arrival time and input has when Graphene powder temperature reaches 95 DEG C
The thermal agitation together of machine chromium complex, while the Graphene powder temperature of input organochromium complexes is risen to into 110 DEG C, makes Graphene powder
Discharge after being surface-treated to thermal agitation 12min at 110 DEG C；Again dried carbon fiber is used into maleic anhydride phase solvent
Surface wet process is carried out with stannic acid fat, and is dried under 120 DEG C of hot air circulations；Then PP, unsaturated carboxylic acid and PP are grafted
Thing compatilizer, thio-2 acid dibasic acid esters, the Graphene powder of surface treated are added successively and at normal temperatures in high-speed mixer
Mixing 10 minutes, forms Graphene/PP compounds；
By above-mentioned Graphene/PP compounds and Jing surface graft and dry after carbon fiber Jing double screw extruders extrusion
Granulation forms the modified enhancing PP particulate materials of Graphene, and the expressing technique condition of double screw extruder is：Extrusion temperature is feed end
180 DEG C, remaining each section is 230 DEG C, and extruded velocity is 320rpm；
Graphene that double screw extruder is extruded is modified strengthen PP particulate materials place at a temperature of 80 DEG C carry out within 36 hours it is pre-
Heated drying；Then with single screw extrusion machine by the modified enhancing PP particulate material melting extrusions of Graphene, single screw extrusion machine extrudes work
Skill condition is：Extrusion temperature is 230 DEG C of feed end, and 260 DEG C of remaining end, extruded velocity 900rpm, the melt of extrusion is positioned over guarantor
In incubator, incubator temperature control is at 125 DEG C；The melt for being extruded single screw extrusion machine by plate moulding machine is compressing,
First by mould using being steam heated to 55 DEG C, then by compressing, compacting in the melt input sheet material mould pressing die of extrusion
Technological parameter is：Plate forming pressure 18MPa, the dwell time is 1.2 hours, the sheet material base after compacting is taken out and is put into forming machine
In 96 hours, further take out to be placed in 45 DEG C of warm water to carry out flattening stress ageging and process 96 hours, then lie in home
At a temperature of 120 hours as sheet material semi-finished product；
Finally by above-mentioned sheet material semi-finished product through Ageing Treatment, after keeping flat, by being processed into sheet material finished product.
Jing is tested, and sheet material main performance is：178 DEG C of sheet deformation temperature, tensile strength reaches 45MPa, bending strength
52MPa, impact strength is 13.5.8KJ/m2, the crack-free phenomenon under pressure 2MPa, pressurize pressure test in 10 minutes.
Embodiment 2：
（1）Dispensing：Each component raw material is weighed by following quality：5g Graphene powders, 84g polypropylene（Model 045）, 20g carbon it is fine
Dimension, 7.4 g PP-g-MAH phase solvents, 0.6g maleic anhydride phase solvents, 1.0g organochromium complexes, 1.0g stannic acid fat, 3g are thio
Dipropyl acid diester.
（2）First Graphene powder and carbon fiber are surface-treated respectively, Graphene powder is reached into 85 in high-speed mixer
DEG C when input wherein carry out thermal agitation, the thermal agitation time is 20min, and arrival time and Graphene powder temperature are thrown when reaching 90 DEG C
Enter organochromium complexes thermal agitation together, while the Graphene powder temperature of input organochromium complexes is risen to into 120 DEG C, make graphite
Alkene powder discharges after being surface-treated to thermal agitation 10min at 120 DEG C；Again dried carbon fiber is used into maleic anhydride phase
Solvent and stannic acid fat carry out surface wet process, and dry under 120 DEG C of hot air circulations；Then by PP, unsaturated carboxylic acid and PP
Graft compatilizer, thio-2 acid dibasic acid esters, surface treated Graphene powder add in high-speed mixer successively and
Mix 15 minutes under normal temperature, form Graphene/PP compounds；
By above-mentioned Graphene/PP compounds and Jing surface graft and dry after carbon fiber Jing double screw extruders extrusion
Granulation forms the modified enhancing PP particulate materials of Graphene, and the expressing technique condition of double screw extruder is：Extrusion temperature is feed end
170 DEG C, remaining each section is 220 DEG C, and extruded velocity is 350rpm；
Graphene that double screw extruder is extruded is modified strengthen PP particulate materials place at a temperature of 120 DEG C carry out within 24 hours it is pre-
Heated drying；Then with single screw extrusion machine by the modified enhancing PP particulate material melting extrusions of Graphene, single screw extrusion machine extrudes work
Skill condition is：Extrusion temperature is 180 DEG C of feed end, and 210 DEG C of remaining end, extruded velocity 800rpm, the melt of extrusion is positioned over guarantor
In incubator, incubator temperature control is at 150 DEG C；The melt for being extruded single screw extrusion machine by plate moulding machine is compressing,
First by mould using being steam heated to 30 DEG C, then by compressing, compacting in the melt input sheet material mould pressing die of extrusion
Technological parameter is：Plate forming pressure 15MPa, the dwell time is 2 hours, the sheet material base after compacting is taken out and is put in forming machine
72 hours, further taking out to be placed in 50 DEG C of warm water carried out flattening stress ageging process 72 hours, then lies in home temperature
Lower 150 hours are spent as sheet material semi-finished product；
Finally by above-mentioned sheet material semi-finished product through Ageing Treatment, after keeping flat, using Cutter Body Processing with Machining Center into sheet material finished product.
Jing is tested, and sheet material main performance is：168 DEG C of sheet deformation temperature, tensile strength reaches 42MPa, bending strength
45MPa, impact strength is 12. 5KJ/m2, the flawless under pressure 1.6MPa, the pressurize pressure test of 15 minutes.
Embodiment 3：
（1）Dispensing：Each component raw material is weighed by following quality：20g Graphene powders, 52g polypropylene, 10g carbon fibers, 1.4g mix
Agent, 0.6g maleic anhydride phase solvents, 3.6g organochromium complexes, 0.4g stannic acid fat, 1g thio-2 acid dibasic acid esters.
（2）First Graphene powder and carbon fiber are surface-treated respectively, Graphene powder is reached into 90 in high-speed mixer
DEG C when input wherein carry out thermal agitation, the thermal agitation time is 20min, arrival time and when Graphene powder temperature reaches 100 DEG C
Input organochromium complexes thermal agitation together, while the Graphene powder temperature of input organochromium complexes is risen to into 120 DEG C, makes stone
Black alkene powder discharges after being surface-treated to thermal agitation 15min at 120 DEG C；Again dried carbon fiber is used into maleic anhydride
Phase solvent and stannic acid fat carry out surface wet process, and dry under 120 DEG C of hot air circulations；Then by PP, unsaturated carboxylic acid with
PP graft compatilizers, thio-2 acid dibasic acid esters, surface treated Graphene powder are added simultaneously successively in high-speed mixer
Mix 8 minutes at normal temperatures, form Graphene/PP compounds；
By above-mentioned Graphene/PP compounds and the carbon fiber Jing double screw extruders Jing after surface graft and dried process
Extruding pelletization forms the modified enhancing PP particulate materials of Graphene, and the expressing technique condition of double screw extruder is：Extrusion temperature be into
230 DEG C of end of material, remaining each section is 250 DEG C, and extruded velocity is 280rpm；
Graphene that double screw extruder is extruded is modified strengthen PP particulate materials place at a temperature of 60 DEG C carry out within 24 hours it is pre-
Heated drying；Then with single screw extrusion machine by the modified enhancing PP particulate material melting extrusions of Graphene, single screw extrusion machine extrudes work
Skill condition is：Extrusion temperature is 250 DEG C of feed end, and 260 DEG C of remaining end, extruded velocity 1000rpm, the melt of extrusion is positioned over guarantor
In incubator, incubator temperature control is at 80 DEG C；The melt for being extruded single screw extrusion machine by plate moulding machine is compressing, first
By mould using being steam heated to 80 DEG C, then by compressing, presser in the melt input sheet material mould pressing die of extrusion
Skill parameter is：Plate forming pressure 20MPa, the dwell time is 0.5 hour, the sheet material base after compacting is taken out and is put in forming machine
84 hours, further taking out to be placed in 45 DEG C of warm water carried out flattening stress ageging process 72 hours, then lies in home temperature
Lower 180 hours are spent as sheet material semi-finished product；
Finally by above-mentioned sheet material semi-finished product through Ageing Treatment, after keeping flat, by Cutter Body Processing with Machining Center into sheet material finished product.
Jing is tested, and sheet material main performance is：148 DEG C of sheet deformation temperature, tensile strength reaches 38MPa, bending strength
43MPa, impact strength is 10. 5KJ/m2, the flawless under pressure 1.3MPa, the pressurize pressure test of 10 minutes.
Embodiment 4：
（1）Dispensing：Each component raw material is weighed by following quality：20g Graphene powders, 84g polypropylene, 20g carbon fibers, 4.4g mix
Agent, 1.6g maleic anhydride phase solvents, 3g organochromium complexes, 1g stannic acid fat, 4g thio-2 acid dibasic acid esters.
（2）First Graphene powder and carbon fiber are surface-treated respectively, Graphene powder is reached into 80 in high-speed mixer
DEG C when input wherein carry out thermal agitation, the thermal agitation time is 18min, and arrival time and Graphene powder temperature are thrown when reaching 90 DEG C
Enter organochromium complexes thermal agitation together, while the Graphene powder temperature of input organochromium complexes is risen to into 90 DEG C, make graphite
Alkene powder discharges after being surface-treated to thermal agitation 15min at 90 DEG C；Again dried carbon fiber is used into maleic anhydride phase
Solvent and stannic acid fat carry out surface wet process, and dry under 130 DEG C of hot air circulations；Then by PP, unsaturated carboxylic acid and PP
Graft compatilizer, thio-2 acid dibasic acid esters, surface treated Graphene powder add in high-speed mixer successively and
Mix 8 minutes under normal temperature, form Graphene/PP compounds；
By above-mentioned Graphene/PP compounds and the carbon fiber Jing double screw extruders Jing after surface graft and dried process
Extruding pelletization forms the modified enhancing PP particulate materials of Graphene, and the expressing technique condition of double screw extruder is：Each section of extrusion temperature
230 DEG C are, extruded velocity is 350rpm；
Graphene that double screw extruder is extruded is modified strengthen PP particulate materials place at a temperature of 110 DEG C carry out within 45 hours it is pre-
Heated drying；Then with single screw extrusion machine by the modified enhancing PP particulate material melting extrusions of Graphene, single screw extrusion machine extrudes work
Skill condition is：Extrusion temperature respectively holds equal 220 DEG C, and extruded velocity 950rpm, the melt of extrusion is positioned in incubator, incubator temperature
Degree control is at 110 DEG C；The melt for being extruded single screw extrusion machine by plate moulding machine is compressing, first mould is adopted into steam
58 DEG C are heated to, then will be compressing in the melt input sheet material mould pressing die of extrusion, pressing process parameter is：Sheet material into
Type pressure 10MPa, the dwell time is 1.4 hours, the sheet material base after compacting is taken out and is put into 95 hours in forming machine, further takes out and puts
Putting in 50 DEG C of warm water carries out flattening stress ageging process 95 hours, then lies in the lower conduct in 170 hours of Normal Environmental Temperature
Sheet material semi-finished product；
Finally by above-mentioned sheet material semi-finished product through Ageing Treatment, after keeping flat, by Cutter Body Processing with Machining Center into sheet material finished product.
Jing is tested, 168 DEG C of sheet material main performance sheet deformation temperature, and tensile strength reaches 39MPa, bending strength 44MPa,
Impact strength is 10. 5KJ/m2, the flawless under pressure 1.5MPa, the pressurize pressure test of 10 minutes.
Embodiment 5：
（1）Dispensing：Each component raw material is weighed by following quality：13g Graphene powders, 68g polypropylene, 15g carbon fibers, 2.8g mix
Agent, 1.2g maleic anhydride phase solvents, 2.4g organochromium complexes, 0.6g stannic acid fat, 4g thio-2 acid dibasic acid esters.
（2）First Graphene powder and carbon fiber are surface-treated respectively, Graphene powder is reached into 80 in high-speed mixer
DEG C when input wherein carry out thermal agitation, the thermal agitation time is 15min, and arrival time and Graphene powder temperature are thrown when reaching 90 DEG C
Enter organochromium complexes thermal agitation together, while the Graphene powder temperature for adding organochromium complexes is risen to into 90 DEG C, make graphite
Alkene powder discharges after being surface-treated to thermal agitation 10min at 90 DEG C；Again dried carbon fiber is used into maleic anhydride phase
Solvent and stannic acid fat carry out surface wet process, and dry under 90 DEG C of hot air circulations；Then by PP, unsaturated carboxylic acid and PP
Graft compatilizer, thio-2 acid dibasic acid esters, surface treated Graphene powder add in high-speed mixer successively and
Mix 9 minutes under normal temperature, form Graphene/PP compounds；
By above-mentioned Graphene/PP compounds and the carbon fiber Jing double screw extruders Jing after surface graft and dried process
Extruding pelletization forms the modified enhancing PP particulate materials of Graphene, and the expressing technique condition of double screw extruder is：Extrusion temperature be into
200 DEG C of end of material, remaining each section is 250 DEG C, and extruded velocity is 350rpm；
Graphene that double screw extruder is extruded is modified strengthen PP particulate materials place at a temperature of 75 DEG C carry out within 45 hours it is pre-
Heated drying；Then with single screw extrusion machine by the modified enhancing PP particulate material melting extrusions of Graphene, single screw extrusion machine extrudes work
Skill condition is：Extrusion temperature is 230 DEG C of feed end, and 260 DEG C of remaining end, extruded velocity 950rpm, the melt of extrusion is positioned over guarantor
In incubator, incubator temperature control is at 130 DEG C；The melt for being extruded single screw extrusion machine by plate moulding machine is compressing,
First by mould using being steam heated to 56 DEG C, then by compressing, compacting in the melt input sheet material mould pressing die of extrusion
Technological parameter is：Plate forming pressure 10MPa, the dwell time is 1.4 hours, the sheet material base after compacting is taken out and is put into forming machine
In 95 hours, further take out to be placed in 50 DEG C of warm water to carry out flattening stress ageging and process 95 hours, then lie in home
At a temperature of 170 hours as sheet material semi-finished product；
Finally by above-mentioned sheet material semi-finished product through Ageing Treatment, after keeping flat, by Cutter Body Processing with Machining Center into sheet material finished product.
Jing test, 155 DEG C of sheet material main performance sheet deformation temperature, tensile strength reach 42.5MPa, bending strength 44MPa,
Impact strength is 10 .1KJ/m2, the resistance to pressure pressure of one side reach 1.41MPa.
Claims (6)
1. a kind of preparation method of modified polypropene composite strengthening toughness reinforcing sheet material, it is characterised in that comprise the following steps：
（1）Each raw material is weighed by mass fraction：50～80 parts of polypropylene, 5 ~ 20 parts of Graphene powder, 8 ~ 20 parts of carbon fiber, Organic Chromium
1～2.2 part of complex compound, unsaturated carboxylic acid and 0.4～7.4 part of polyacrylic graft phase solvent, maleic anhydride phase solvent 0.6～
1.6 parts, 1～1.8 part of stannic acid fat, 1～4 part of thio-2 acid dibasic acid esters；
（2）Graphene powder is carried out into high speed thermal agitation, organochromium complexes is put into and go out after being surface-treated in Graphene powder
Material；
（3）Dry carbon fiber is carried out into surface wet and in 90～140 DEG C of hot blasts by maleic anhydride phase solvent and stannic acid fat
The lower drying of circulation；
（4）By polypropylene, unsaturated carboxylic acid and polyacrylic graft phase solvent, thio-2 acid dibasic acid esters and step（2）Jing
Graphene powder after surface treatment is added successively in high-speed mixer and carries out high-speed stirred and forms Graphene/polypropylene mixing
Material；
（5）By step（4）Middle Graphene/polypropylene mixture and step（3）Carbon fiber after middle drying is carried out in an extruder
Melting, shearing, mixing, homogenizing, and the modified RPP particle of Graphene is obtained after tie rod and cooling, pelletizing；
（6)）By step（5）The modified RPP particle of the Graphene of middle gained carries out preheating and drying, by dried graphite
The modified RPP particle of alkene carries out melt extrusion, and the melt of extrusion is positioned over incubator inside holding；
（7）Plate moulding machine, mould are preheated, by step（6）The middle extrusion melt input sheet material mould through insulation
Press is pressed into the demoulding after plate blank, then plate blank is put in forming machine and is cooled down, then plate blank is taken out into placement
Carry out flattening after stress ageging process in warm water, and keep flat at normal temperatures；
（8）Plate blank is processed into into sheet material finished product.
2. the preparation method of modified polypropene composite strengthening toughness reinforcing sheet material according to claim 1, it is characterised in that：It is described
Step（2）Middle Graphene powder carries out thermal agitation in high-speed mixer, and the temperature of Graphene powder thermal agitation is 60～90 DEG C, graphite
The time of alkene powder thermal agitation is 10～20min；Graphene powder temperature is 85 when organochromium complexes are thrown in the Graphene powder
～120 DEG C；The surface treatment temperature is 85～135 DEG C, and the time is 10～20min.
3. the preparation method of modified polypropene composite strengthening toughness reinforcing sheet material according to claim 1, it is characterised in that：It is described
Step（4）High speed mixing time is 8～15 minutes.
4. the preparation method of modified polypropene composite strengthening toughness reinforcing sheet material according to claim 1, it is characterised in that：It is described
Step（5）The extrusion temperature of middle extruder is 170～250 DEG C, and extruded velocity is 250～350rpm.
5. the preparation method of modified polypropene composite strengthening toughness reinforcing sheet material according to claim 1, it is characterised in that：It is described
Preheating and drying temperature is 60～100 DEG C in step (6), and the time is 24～48 hours；Melt extrusion temperature is 170～260 DEG C,
Extruded velocity is 800～1200rpm；Incubator temperature is 80～150 DEG C.
6. the preparation method of modified polypropene composite strengthening toughness reinforcing sheet material according to claim 1, it is characterised in that：It is described
Step（7）The mould preheating of middle plate moulding machine is heated using steam, and temperature is 30～80 DEG C, the shaping of plate moulding machine
Pressure is 10～20MPa, and the compacting dwell time is 0.5 ~ 2 hour；Cool time is 72 ~ 96 hours in the forming machine；It is described
Leveling stress ageging is processed to be carried out in 40～80 DEG C of warm water, and process time is 72～96 hours；It is described to keep flat the time extremely
It is less more than 120 hours.
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