CN101352945B - Micro-foaming polypropylene-nonwoven cloth composite panel for inner decoration of vehicle and preparation method thereof - Google Patents
Micro-foaming polypropylene-nonwoven cloth composite panel for inner decoration of vehicle and preparation method thereof Download PDFInfo
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- CN101352945B CN101352945B CN2008101960633A CN200810196063A CN101352945B CN 101352945 B CN101352945 B CN 101352945B CN 2008101960633 A CN2008101960633 A CN 2008101960633A CN 200810196063 A CN200810196063 A CN 200810196063A CN 101352945 B CN101352945 B CN 101352945B
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means 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
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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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/365—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using pumps, e.g. piston pumps
- B29C48/37—Gear pumps
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Abstract
The invention discloses a micro-foaming polypropylene-non-woven composite board for automobile interior decoration and a preparation method thereof, belonging to the field of polymer materials. The foamed polypropylene is characterized by high-power tension, fine foams and having no peculiar smell after being heated, and at the same time the preparation technology is simple and the production efficiency is very high. The micro-foaming polypropylene-non-woven composite board for automobile interior decoration of the invention consists of micro-foaming polypropylene boards and non-woven fabric,the single face or double faces of which is or are compounded on the micro-foaming polypropylene board, wherein, the micro-foaming polypropylene board is manufactured from materials with the following weight percentages: 30 to 70 percent of disproportionated polypropylene, 10 to 40 percent of random copolymerized polypropylene, 5 to 10 percent of high density polyethylene, 5 to 10 percent of superfine nucleating agents, 0 to 9 percent of inorganic fillers, 1 to 3 percent of carboxyl compatibilizing agents and 0.5 to 2.0 percent of foaming agents of the citric acid system.
Description
Technical field
The present invention relates to a kind of composite polypropylene board and preparation method thereof, with micro-foaming polypropylene-nonwoven cloth composite panel and preparation method thereof, belong to polymeric material field more specifically to a kind of automotive trim.
Background technology
Comfortableness, security and environment-friendly type are current automotive engineering main development tendency, and this has constituted the direction of automotive material development, and material property is superior to be continued to bring out with auto parts and components structure innovation.The working of plastics of foaming structure is important auto parts and components, function and characteristics with light weight, heat insulation, sound insulation and buffering (energy-absorbing), and expanded polypropylene is combination property advanced person's a foamed plastics, has the high advantage of tenacity excellent and heat resisting temperature, has other very excellent performance simultaneously, its outstanding advantage is: (1) hear resistance height, heat resisting temperature can reach 120 ℃; (2) good resilience and toughness, elastic modelling quantity reaches 1.50GPa, has guaranteed the very property that product is good; (3) hole-closing structure makes it possess good heat-proof quality, and thermal conductivity is about 0.06W/MK; (4) the plasticizing processing temperature is low, can carry out lamination joint, welding and bonding with other sheet materials, forms bilayer or three-layer sandwich composite board; (5) can be fit to thermoplastic mold pressing secondary forming process, and can saw, follow closely and punch; (6) belong to feature of environmental protection green material, resistance to chemical attack, and do not contain Toxic matter, free from extraneous odour; Therefore expanded polypropylene is suitable as automobile heat insulation material and buffering energy-absorbing parts after particularly compound very much.
In developed countries such as day America and Europes, the application of expanded polypropylene material on automobile constantly enlarges and in-depth, expand to parts such as ceiling, instrument panel gasket material, door panel lining material, board putting things, boot and the helmet by initial bumper buffer stopper gradually, become multiduty automotive material.Present polyacrylic foaming method mainly contains extrusion foaming, moulded from foam, wherein the extrusion foaming method is meant: the resin melt that will contain blowing agent, when extruding, the head die mouth becomes normal pressure by high pressure, be dissolved in the blowing agent decomposition gas generation puffing in the resin melt, obtain the polypropylene material of foaming structure; The extrusion foaming method is that the mixing and foaming of material is once finished in double screw extruder, has characteristics such as technological process is simple, production efficiency is high, product form is adjustable.
Open day is the Chinese patent CN1303406A in July 11 calendar year 2001, a kind of manufacturing " thermoformable polypropylene foam sheet " method is disclosed, this method adopts iso-butane etc. as blowing agent, extrudes by the extruder annular die, obtains that a kind of " density is at least 16 kilograms/meter
3And be no more than 200 kilograms/meter
3, thickness be at least 2 millimeters and be no more than 25 millimeters " foamed material tubing.Open day is the Chinese patent CN1861368A on November 15th, 2006, a kind of " production method of non-cross-linking PP foam material " disclosed, these method employing carbon dioxide etc. are as blowing agent, the extruding dies temperature is 120-160 ℃, and the expanded polypropylene bead density that obtains is 28 kilograms/meter
3-86 kilograms/meter
3Open day is Chinese patent CN1944032A, CN1944027A, the CN1944035A on April 11st, 2007, disclose a kind of polypropylene foamed sheet production method and with the complex method of nonwoven, plastic sheet, the raw material of this method adopt HOPP, nanoscale carbonic acid silicon, AC blowing agent (Celogen Az), wherein the AC blowing agent accounts for 10-15 part, and the heating-up temperature of extruder and die head all is 100 ℃ in the only embodiment.Constitute and material property is judged according to the chemistry of material, " 100 ℃ of extrusion temperatures " can not make generally that polypropylene melt is warm to be extruded, this publication technology shortage practicality.
In above-mentioned existing disclosed expanded polypropylene material and the production method, if adopt supercritical gas as blowing agent, equipment and technology all there is very harsh requirement, and the product of producing is an expansion ratio at 10-40 times polypropylene expanded body, it is not enough to exist the foaming plate rigidity, mechanical strength is low, the percent thermal shrinkage height, bonding not firm with nonwoven, the secondary thermoplastic adds shortcoming and problem such as easily break man-hour: if adopt AC blowing agent (Celogen Az), because of containing amine substance, there is environmental pollution in production process, the product obvious peculiar smell that has been heated is not suitable for automotive interior material.Micro-foaming polypropylene-non-woven fabric compounded material of a kind of environment-friendly type of needs exploitation and preparation method thereof is to solve existing problem.
Summary of the invention
The objective of the invention is to solve above-mentioned the deficiencies in the prior art and problem, a kind of automotive trim micro-foaming polypropylene-nonwoven cloth composite panel is provided, this expanded polypropylene material has super drawing and abscess is fine and closely woven, the characteristic of the free from extraneous odour that is heated.
The present invention simultaneously also provides the preparation method of this automotive trim with micro-foaming polypropylene-nonwoven cloth composite panel, and this method technology is simple, and higher production efficiency is arranged.
Technical scheme of the present invention is as follows:
Automotive trim of the present invention micro-foaming polypropylene-nonwoven cloth composite panel, it is made up of the nonwoven that micro-foaming polypropylene sheet and single or double are compounded on the micro-foaming polypropylene sheet, and wherein said micro-foaming polypropylene sheet is made by following percentage by weight raw material: disproportionation polypropylene 30～70%, atactic copolymerized polypropene 10～40%, high density polyethylene (HDPE) 5～10%, ultra-fine nucleator 5～10%, inorganic filler 0～9%, carboxyl compatilizer 1～3%, citric acid are blowing agent 0.5～2.0%.
Automotive trim of the present invention micro-foaming polypropylene-nonwoven cloth composite panel, the expansion ratio that its further technical scheme is described micro-foaming polypropylene sheet is 1.2～5.0, foaming polypropylene sheet density is 0.2～0.8g/cm
3, thickness is 0.5～6.0mm.
Automotive trim of the present invention micro-foaming polypropylene-nonwoven cloth composite panel, its described disproportionation polypropylene is preferably the chemical modification polypropylene of melt index at 0.5～1.0g/10min; Described atactic copolymerized polypropene is preferably melt index at 0.5～3.0g/10min technical grade polypropylene; Described high density polyethylene (HDPE) is preferably the industrial-grade polyethylene resin of melt index at 1.0～3.0g/10min.
Automotive trim of the present invention is with micro-foaming polypropylene-nonwoven cloth composite panel, and its described ultra-fine nucleator is preferably one or both the mixture in calcium carbonate superfine powder and the refining titanium dioxide, and fineness is more than 2000 orders; Described inorganic filler is preferably one or both the mixture in glass fibre and the inorganic particle, further technical scheme is that described glass fibre is the 1mm dry method chopped strand of surface-coated silylation size again, and described inorganic particle is the fineness of surface-coated silylation size superfine talcum powder more than 1000 orders and one or both the mixture in the ultra-fine lithopone.
Automotive trim of the present invention micro-foaming polypropylene-nonwoven cloth composite panel, its described carboxyl compatilizer is preferably the ethylene-propylene acid oligomer of acrylic monomers unit content 12～20%; Described citric acid is that blowing agent is citric acid and sodium bicarbonate NaHCO
3The equivalent mixture, fineness is more than 1000 orders.
Automotive trim of the present invention micro-foaming polypropylene-nonwoven cloth composite panel, its described nonwoven is grammes per square metre 30-300g/m
2Terylene non-woven fabric or non-woven viscose fabric.
The above-mentioned automotive trim of the present invention preparation method of micro-foaming polypropylene-nonwoven cloth composite panel mainly may further comprise the steps:
(A) foamed material premix: with disproportionation polypropylene, atactic copolymerized polypropene, high density polyethylene (HDPE), ultra-fine nucleator, inorganic filler, carboxyl compatilizer, citric acid is that blowing agent places the batch mixer stirring at low speed, takes out stand-by after 5～20 minutes;
(B) extrusion foaming sheet material: the premix that (A) obtained drops into the charge door of twin-screw extrusion sheet machine, and barrel temperature is 150～210 ℃, and die head temperature is 165～175 ℃, and screw speed is 20～150 rev/mins, obtains micro-foaming polypropylene sheet after extruding;
(C) compound nonwoven cloth: the foaming plate single or double compound nonwoven cloth of extruding, finalize the design through three roller roll-ins together, three roll temperatures are controlled at 80～95 ℃, through cutter specification cutting on demand, obtain the automotive trim micro-foaming polypropylene-nonwoven cloth composite panel of single face compound nonwoven cloth or two-sided compound nonwoven cloth again.
Automotive trim of the present invention is with among the preparation method of micro-foaming polypropylene-nonwoven cloth composite panel, its further technical scheme is that the screw slenderness ratio of described twin-screw extrusion sheet machine is 33:1～55:1, it is buttoned-up status that the full section of barrel must not have exhaust apparatus or exhaust apparatus, dispose a self balancing gear type melt pressure pump between barrel end and extrusion die, extrusion die is to be suitable for three-layer co-extruded multithread duct device.
Compared with prior art the invention has the beneficial effects as follows:
(1) the present invention adopts common twin-screw extrusion equipment production, have equipment drop into low, manufacturing process simple, be easy to characteristics such as Industry Promotion;
(2) to adopt citric acid be that blowing agent is chemical environment-friendly type blowing agent in the present invention, production process non-environmental-pollution, product are heated or the secondary thermoplastic add do not emit bad smell man-hour, long-term characteristics such as nontoxic safe in utilization;
(3) the present invention is by the innovative design of prescription, make polypropylene foamed plate possess excellent mechanical property and thermoplastic cycling processability, temperature tolerance is brought up to more than 120 ℃, micro-foaming polypropylene sheet and non-woven cementation fastness when having guaranteed thermoplastic when reprocessing and long-term the use simultaneously;
(4) material material of the present invention can adopt general automotive interior material process equipment production and processing, and the technology adjustment is simple, has higher production efficiency, add raw material generally easily purchase, with low cost, therefore possess very strong competitiveness;
(5) polypropylene foamed plate of manufacturing of the present invention is the closed pore hard structure, density is 0.2～0.8 gram/cubic centimetre, lightweight and intensity is higher also can be widely used in being incubated fields such as food and drink tool, product damping packing, building template, finishing material interlayer, camp appliances except that the automobile inside gadget;
(6) polypropylene foamed plate of manufacturing of the present invention is the non-crosslinked structure, can recycle according to general polypropylene modified material, does not cause secondary pollution, meets the requirement of economy capable of circulation.
The specific embodiment
Embodiment 1
The raw material proportioning: disproportionation polypropylene 50%, atactic copolymerized polypropene 28%, high density polyethylene (HDPE) 8%, calcium carbonate superfine powder 5%, glass fibre 6%, carboxyl compatilizer 2.5%, citric acid are blowing agent 0.5%.Wherein the disproportionation polypropylene is the chemical modification polypropylene (the FNT series acrylic resin that Qinhuangdao Fu Ente novel high polymer material Co., Ltd produces) of melt index 0.5g/10min; The melt index of atactic copolymerized polypropene is 3.0g/10min; The melt index of high density polyethylene (HDPE) is 2.0g/10min; The fineness of calcium carbonate superfine powder is 2500 orders; The 1mm short glass fiber that glass fibre is produced for megalith company; The carboxyl compatilizer is the EAA oligomer of AA content 16%; Citric acid is that blowing agent is citric acid and sodium bicarbonate NaHCO
3The equivalent mixture, fineness is by 1250 orders.
The preparation method:
(A) foamed material premix: with disproportionation polypropylene, atactic copolymerized polypropene, high density polyethylene (HDPE), calcium carbonate superfine powder, through glass fibre, carboxyl compatilizer, the citric acid of surface-coated silylation size is that blowing agent etc. places the batch mixer stirring at low speed, takes out stand-by after 5 minutes;
(B) extrusion foaming sheet material: the premix input screw diameter that (A) obtained is that 75mm, draw ratio are that 45:1, a mouthful Mould Breadth degree are the charge door of the twin-screw extrusion sheet machine of 1650mm, barrel temperature is 180 ℃, die head temperature is 166 ℃, die openings is 1.2mm, screw speed is 40 rev/mins, and the polypropylene expanded plate of extruding is by three roller arrangement roll-formings; Detect through following the tracks of, the production process free from extraneous odour distributes, and the polypropylene expanded plate thickness of extrusion molding is that 1.8mm, density are 0.55g/cm
3, hot strength is that 22MPa, bending strength are 35MPa;
(C) compound nonwoven cloth: the upper single face compound 69 of the polypropylene expanded plate 0g/m that extrudes
2The black terylene nonwoven, through three roller roll-ins typing, three roll temperatures are controlled at 85 ℃, press the specification cutting of 1400mm * 1700mm again through cutter, obtain grammes per square metre and are about 1090g/m together
2Single face cover the cloth automotive trim with micro-foaming polypropylene-nonwoven cloth composite panel, nonwoven is bonding firmly.
Embodiment 2
The raw material proportioning: disproportionation polypropylene 41%, atactic copolymerized polypropene 40%, high density polyethylene (HDPE) 5%, calcium carbonate superfine powder 5%, glass fibre 6%, carboxyl compatilizer 2.5%, citric acid are blowing agent 0.5%.Wherein the disproportionation polypropylene is the chemical modification polypropylene (the FNT series acrylic resin that Qinhuangdao Fu Ente novel high polymer material Co., Ltd produces) of melt index 0.5g/10min; The melt index of atactic copolymerized polypropene is 3.0g/10min; The melt index of high density polyethylene (HDPE) is 2.0g/10min; The fineness of calcium carbonate superfine powder is 2500 orders; The 1mm short glass fiber that glass fibre is produced for megalith company; The carboxyl compatilizer is the EAA oligomer of AA content 16%; Citric acid is that blowing agent is citric acid and sodium bicarbonate NaHCO
3The equivalent mixture, fineness is by 1250 orders.
The preparation method:
(A) foamed material premix: with disproportionation polypropylene, atactic copolymerized polypropene, high density polyethylene (HDPE), calcium carbonate superfine powder, through glass fibre, carboxyl compatilizer, the citric acid of surface-coated silylation size is that blowing agent etc. places the batch mixer stirring at low speed, takes out stand-by after 8 minutes;
(B) extrusion foaming plate: the premix input screw diameter that (A) obtained is that 75mm, draw ratio are that 45:1, a mouthful Mould Breadth degree are the charge door of the twin-screw extrusion sheet machine of 1650mm, barrel temperature is 180 ℃, die head temperature is 168 ℃, die openings is 1.2mm, screw speed is 55 rev/mins, and the polypropylene expanded plate of extruding is by three roller arrangement roll-formings; Detect through following the tracks of, the production process free from extraneous odour distributes, and the polypropylene expanded plate thickness of extrusion molding is that 1.5mm, density are 0.57g/cm
3, hot strength is that 24MPa, bending strength are 39MP;
(C) compound nonwoven cloth: the upper single face compound 69 of the polypropylene expanded plate 0g/m that extrudes
2The black terylene nonwoven, through three roller roll-ins typing, three roll temperatures are controlled at 85 ℃, press the specification cutting of 1400mm * 1700mm again through cutter, obtain grammes per square metre and are about 950g/m together
2Single face cover the cloth automotive trim with micro-foaming polypropylene-nonwoven cloth composite panel, nonwoven is bonding firmly.
Embodiment 3
The raw material proportioning: disproportionation polypropylene 57%, atactic copolymerized polypropene 16%, high density polyethylene (HDPE) 10%, calcium carbonate superfine powder 5%, glass fibre 9%, carboxyl compatilizer 2.5%, citric acid are blowing agent 0.5%.Wherein the disproportionation polypropylene is the chemical modification polypropylene (self-control) of melt index 1.0g/10min; The melt index of atactic copolymerized polypropene is 0.5g/10min; The melt index of high density polyethylene (HDPE) is 1.0g/10min; The fineness of calcium carbonate superfine powder is 2500 orders; Glass fibre is the 1mm short glass fiber of megalith company; The carboxyl compatilizer is the EAA oligomer of AA content 16%; Citric acid is that blowing agent is citric acid and sodium bicarbonate NaHCO
3The equivalent mixture, fineness is by 1250 orders.
The preparation method:
(A) foamed material premix: with disproportionation polypropylene, atactic copolymerized polypropene, high density polyethylene (HDPE), calcium carbonate superfine powder, through glass fibre, carboxyl compatilizer, the citric acid of surface-coated silylation size is that blowing agent etc. places the batch mixer stirring at low speed, takes out stand-by after 10 minutes;
(B) extrusion foaming plate: the premix input screw diameter that (A) obtained is that 75mm, draw ratio are that 45:1, a mouthful Mould Breadth degree are the charge door of the twin-screw extrusion sheet machine of 1650mm, barrel temperature is 185 ℃, die head temperature is 172 ℃, die openings is 1.0mm, screw speed is 60 rev/mins, and the polypropylene expanded plate of extruding is by three roller arrangement roll-formings; Detect through following the tracks of, the production process free from extraneous odour distributes, and the polypropylene expanded plate thickness of extrusion molding is that 2.2mm, density are 0.51g/cm
3, hot strength is that 19MPa, bending strength are 42MPa;
(C) compound nonwoven cloth: at the upper compound 130g/m of the polypropylene expanded plate of extruding
2The black terylene nonwoven, the next compound 40g/m
2The grey non-woven viscose fabric, through three roller roll-ins typing, three roll temperatures are controlled at 92 ℃, press the specification cutting of 1550mm * 1700mm again through cutter, obtain grammes per square metre and are about 1180g/m together
2The two-sided cloth automotive trim that covers with micro-foaming polypropylene-nonwoven cloth composite panel, nonwoven is bonding firmly.
Embodiment 4
The raw material proportioning: disproportionation polypropylene 40%, atactic copolymerized polypropene 34%, high density polyethylene (HDPE) 8%, calcium carbonate superfine powder 10%, glass fibre 5%, carboxyl compatilizer 2.4%, citric acid are blowing agent 0.6%.Wherein the disproportionation polypropylene is the chemical modification polypropylene (self-control) of melt index 1.0g/10min; The melt index of atactic copolymerized polypropene is 0.5g/10min; The melt index of high density polyethylene (HDPE) is 1.0g/10min; The fineness of calcium carbonate superfine powder is 2500 orders; Glass fibre is the 1mm short glass fiber of megalith company; The carboxyl compatilizer is the EAA oligomer of AA content 16%; Citric acid is that blowing agent is citric acid and sodium bicarbonate NaHCO
3The equivalent mixture, fineness is by 1250 orders.The preparation method:
(A) foamed material premix: with disproportionation polypropylene, atactic copolymerized polypropene, high density polyethylene (HDPE), calcium carbonate superfine powder, through glass fibre, carboxyl compatilizer, the citric acid of surface-coated silylation size is that blowing agent etc. places the batch mixer stirring at low speed, takes out stand-by after 10 minutes;
(B) extrusion foaming plate: the premix input screw diameter that (A) obtained is that 75mm, draw ratio are that 45:1, a mouthful Mould Breadth degree are the charge door of the twin-screw extrusion sheet machine of 1650mm, barrel temperature is 184 ℃, die head temperature is 165 ℃, die openings is 0.8mm, screw speed is 90 rev/mins, and the polypropylene expanded plate of extruding is by three roller arrangement roll-formings; Detect through following the tracks of, the production process free from extraneous odour distributes, and the polypropylene expanded plate thickness of extrusion molding is that 1.3mm, density are 0.60g/cm
3, hot strength is that 25MPa, bending strength are 32MPa;
(C) compound nonwoven cloth: at the upper compound 160g/m of the polypropylene expanded plate of extruding
2The black terylene nonwoven, the next compound 80g/m
2Black flower terylene non-woven fabric, through three roller roll-ins typing, three roll temperatures are controlled at 95 ℃, press the specification cutting of 1500mm * 1700mm again through cutter, obtain grammes per square metre and are about 1020g/m together
2The two-sided cloth automotive trim that covers with micro-foaming polypropylene-nonwoven cloth composite panel, nonwoven is bonding firmly.
Embodiment 5
The raw material proportioning: disproportionation polypropylene 45%, atactic copolymerized polypropene 33%, high density polyethylene (HDPE) 8%, calcium carbonate superfine powder 5%, talcum powder 6%, carboxyl compatilizer 2.2%, citric acid are blowing agent 0.8%.Wherein the disproportionation polypropylene is the chemical modification polypropylene (the FNT series acrylic resin that Qinhuangdao Fu Ente novel high polymer material Co., Ltd produces) of melt index 0.5g/10min; The melt index of atactic copolymerized polypropene is 3.0g/10min; The melt index of high density polyethylene (HDPE) is 2.0g/10min; The fineness of calcium carbonate superfine powder is 2500 orders; Talcous fineness is 1250 orders; The 1mm short glass fiber that glass fibre is produced for megalith company; The carboxyl compatilizer is the EAA oligomer of AA content 16%; Citric acid is that blowing agent is citric acid and sodium bicarbonate NaHCO
3The equivalent mixture, fineness is by 1250 orders.
The preparation method:
(A) foamed material premix: with disproportionation polypropylene, atactic copolymerized polypropene, high density polyethylene (HDPE), calcium carbonate superfine powder, through talcum powder, carboxyl compatilizer, the citric acid of surface-coated silylation size is that blowing agent etc. places the batch mixer stirring at low speed, takes out stand-by after 8 minutes;
(B) extrusion foaming plate: the premix input screw diameter that (A) obtained is that 75mm, draw ratio are that 45:1, a mouthful Mould Breadth degree are the charge door of the twin-screw extrusion sheet machine of 1650mm, barrel temperature is 190 ℃, die head temperature is 173 ℃, die openings is 0.8mm, screw speed is 68 rev/mins, and the polypropylene expanded plate of extruding is by three roller arrangement roll-formings; Detect through following the tracks of, the production process free from extraneous odour distributes, and the polypropylene expanded plate thickness of extrusion molding is that 1.1mm, density are 0.54g/cm
3, hot strength is that 16MPa, bending strength are 29MPa;
(C) compound nonwoven cloth: the upper single face compound 69 of the polypropylene expanded plate 0g/m that extrudes
2The black terylene nonwoven, through three roller roll-ins typing, three roll temperatures are controlled at 85 ℃, press the specification cutting of 1500mm * 1700mm again through cutter, obtain grammes per square metre and are about 690g/m together
2Single face cover the cloth automotive trim with micro-foaming polypropylene-nonwoven cloth composite panel, nonwoven is bonding firmly.
Embodiment 6
The raw material proportioning: disproportionation polypropylene 46%, atactic copolymerized polypropene 30%, high density polyethylene (HDPE) 10%, calcium carbonate superfine powder 5%, talcum powder 6%, carboxyl compatilizer 2.5%, citric acid are blowing agent 0.5%.Wherein the disproportionation polypropylene is the chemical modification polypropylene (the FNT series acrylic resin that Qinhuangdao Fu Ente novel high polymer material Co., Ltd produces) of melt index 0.5g/10min; The melt index of atactic copolymerized polypropene is 3.0g/10min; The melt index of high density polyethylene (HDPE) is 2.0g/10min; The fineness of calcium carbonate superfine powder is 2500 orders; The 1mm short glass fiber that glass fibre is produced for megalith company; Talcous fineness is 1250 orders; The carboxyl compatilizer is the EAA oligomer of AA content 16%; Citric acid is that blowing agent is citric acid and sodium bicarbonate NaHCO
3The equivalent mixture, fineness is by 1250 orders.
The preparation method:
(A) foamed material premix: with disproportionation polypropylene, atactic copolymerized polypropene, high density polyethylene (HDPE), calcium carbonate superfine powder, through talcum powder, carboxyl compatilizer, the citric acid of surface-coated silylation size is that blowing agent etc. places the batch mixer stirring at low speed, takes out stand-by after 5 minutes;
(B) extrusion foaming plate: the premix input screw diameter that (A) obtained is that 75mm, draw ratio are that 45:1, a mouthful Mould Breadth degree are the charge door of the twin-screw extrusion sheet machine of 1650mm, barrel temperature is 182 ℃, die head temperature is 169 ℃, die openings is 1.0mm, screw speed is 80 rev/mins, and the polypropylene expanded plate of extruding is by three roller arrangement roll-formings; Detect through following the tracks of, the production process free from extraneous odour distributes, and the polypropylene expanded plate thickness of extrusion molding is that 2.8mm, density are 0.45g/cm
3, hot strength is that 16MPa, bending strength are 30MPa;
(C) compound nonwoven cloth: the compound 140g/m of the upper single face of polypropylene expanded plate that extrudes
2The black terylene nonwoven, through three roller roll-ins typing, three roll temperatures are controlled at 90 ℃, press the specification cutting of 1550mm * 1700mm again through cutter, obtain grammes per square metre and are about 1400g/m together
2Single face cover the cloth automotive trim with micro-foaming polypropylene-nonwoven cloth composite panel, nonwoven is bonding firmly.
Embodiment 7
The raw material proportioning: disproportionation polypropylene 40%, atactic copolymerized polypropene 34%, high density polyethylene (HDPE) 8%, calcium carbonate superfine powder 5%, refining titanium dioxide 5%, glass fibre and superfine talcum powder each 2.5%, carboxyl compatilizer 2.4%, citric acid be blowing agent 0.6%.Wherein the disproportionation polypropylene is the chemical modification polypropylene (the FNT series acrylic resin that Qinhuangdao Fu Ente novel high polymer material Co., Ltd produces) of melt index 0.5g/10min; The melt index of atactic copolymerized polypropene is 3.0g/10min; The melt index of high density polyethylene (HDPE) is 2.0g/10min; The fineness of calcium carbonate superfine powder is 2500 orders; The 1mm short glass fiber that glass fibre is produced for megalith company; Talcous fineness is 1250 orders; The carboxyl compatilizer is the EAA oligomer of AA content 16%; Citric acid is that blowing agent is citric acid and sodium bicarbonate NaHCO
3The equivalent mixture, fineness is by 1250 orders.
The preparation method:
(A) foamed material premix: with disproportionation polypropylene, atactic copolymerized polypropene, high density polyethylene (HDPE), calcium carbonate superfine powder, through the glass fibre of surface-coated silylation size and superfine talcum powder, carboxyl compatilizer, citric acid is that blowing agent etc. places the batch mixer stirring at low speed, takes out stand-by after 10 minutes;
(B) extrusion foaming plate: the premix input screw diameter that (A) obtained is that 75mm, draw ratio are that 45:1, a mouthful Mould Breadth degree are the charge door of the twin-screw extrusion sheet machine of 1650mm, barrel temperature is 184 ℃, die head temperature is 165 ℃, die openings is 0.8mm, screw speed is 60 rev/mins, and the polypropylene expanded plate of extruding is by three roller arrangement roll-formings; Detect through following the tracks of, the production process free from extraneous odour distributes, and the polypropylene expanded plate thickness of extrusion molding is that 1.3mm, density are 0.60g/cm
3, hot strength is that 25MPa, bending strength are 32MPa;
(C) compound nonwoven cloth: the compound 140g/m of the upper single face of polypropylene expanded plate that extrudes
2The black terylene nonwoven, through three roller roll-ins typing, three roll temperatures are controlled at 90 ℃, press the specification cutting of 1550mm * 1700mm again through cutter, obtain grammes per square metre and are about 1200g/m together
2Single face cover the cloth automotive trim with micro-foaming polypropylene-nonwoven cloth composite panel, nonwoven is bonding firmly.
Embodiment 8
The raw material proportioning: disproportionation polypropylene 30%, atactic copolymerized polypropene 40%, high density polyethylene (HDPE) 10%, calcium carbonate superfine powder 8%, glass fibre 9%, carboxyl compatilizer 2.5%, citric acid are blowing agent 0.5%.Wherein the disproportionation polypropylene is the chemical modification polypropylene (self-control) of melt index 1.0g/10min; The melt index of atactic copolymerized polypropene is 0.5g/10min; The melt index of high density polyethylene (HDPE) is 1.0g/10min; The fineness of calcium carbonate superfine powder is 2500 orders; Glass fibre is the 1mm short glass fiber of megalith company; The carboxyl compatilizer is the EAA oligomer of AA content 16%; Citric acid is that blowing agent is citric acid and sodium bicarbonate NaHCO
3The equivalent mixture, fineness is by 1250 orders.
The preparation method:
(A) foamed material premix: with disproportionation polypropylene, atactic copolymerized polypropene, high density polyethylene (HDPE), calcium carbonate superfine powder, through glass fibre, carboxyl compatilizer, the citric acid of surface-coated silylation size is that blowing agent etc. places the batch mixer stirring at low speed, takes out stand-by after 8 minutes;
(B) extrusion foaming plate: the premix input screw diameter that (A) obtained is that 75mm, draw ratio are that 45:1, a mouthful Mould Breadth degree are the charge door of the twin-screw extrusion sheet machine of 1650mm, barrel temperature is 180 ℃, die head temperature is 168 ℃, die openings is 1.2mm, screw speed is 85 rev/mins, and the polypropylene expanded plate of extruding is by three roller arrangement roll-formings; Detect through following the tracks of, the production process free from extraneous odour distributes, and the polypropylene expanded plate thickness of extrusion molding is that 1.4mm, density are 0.57g/cm
3, hot strength is that 23MPa, bending strength are 34MPa;
(C) compound nonwoven cloth: the upper single face compound 69 of the polypropylene expanded plate 0g/m that extrudes
2The black terylene nonwoven, through three roller roll-ins typing, three roll temperatures are controlled at 85 ℃, press the specification cutting of 1500mm * 1700mm again through cutter, obtain grammes per square metre and are about 750g/m together
2Single face cover the cloth automotive trim with micro-foaming polypropylene-nonwoven cloth composite panel, nonwoven is bonding firmly.
Embodiment 9
The raw material proportioning: disproportionation polypropylene 70%, atactic copolymerized polypropene 15%, high density polyethylene (HDPE) 7%, calcium carbonate superfine powder 5%, carboxyl compatilizer 2.5%, citric acid are blowing agent 0.5%.Wherein the disproportionation polypropylene is the chemical modification polypropylene (self-control) of melt index 1.0g/10min; The melt index of atactic copolymerized polypropene is 0.5g/10min; The melt index of high density polyethylene (HDPE) is 1.0g/10min; The fineness of calcium carbonate superfine powder is 2500 orders; The carboxyl compatilizer is the EAA oligomer of AA content 16%; Citric acid is that blowing agent is citric acid and sodium bicarbonate NaHCO
3The equivalent mixture, fineness is by 1250 orders.
The preparation method:
(A) foamed material premix: with disproportionation polypropylene, atactic copolymerized polypropene, high density polyethylene (HDPE), calcium carbonate superfine powder, carboxyl compatilizer, citric acid is that blowing agent etc. places the batch mixer stirring at low speed, takes out stand-by after 10 minutes;
(B) extrusion foaming plate: the premix input screw diameter that (A) obtained is that 75mm, draw ratio are that 45:1, a mouthful Mould Breadth degree are the charge door of the twin-screw extrusion sheet machine of 1650mm, barrel temperature is 185 ℃, die head temperature is 172 ℃, die openings is 1.0mm, screw speed is 100 rev/mins, and the polypropylene expanded plate of extruding is by three roller arrangement roll-formings; Detect through following the tracks of, the production process free from extraneous odour distributes, and the polypropylene expanded plate thickness of extrusion molding is that 2.2mm, density are 0.51g/cm
3, hot strength is that 18MPa, bending strength are 32MPa;
(C) compound nonwoven cloth: at the upper compound 160g/m of the polypropylene expanded plate of extruding
2The black terylene nonwoven, the next compound 80g/m
2Black flower terylene non-woven fabric, through three roller roll-ins typing, three roll temperatures are controlled at 95 ℃, press the specification cutting of 1500mm * 1700mm again through cutter, obtain grammes per square metre and are about 1120g/m together
2The two-sided cloth automotive trim that covers with micro-foaming polypropylene-nonwoven cloth composite panel, nonwoven is bonding firmly.
Claims (9)
1. automotive trim micro-foaming polypropylene-nonwoven cloth composite panel, it is characterized in that this sheet material is made up of the nonwoven that micro-foaming polypropylene sheet and single or double are compounded on the micro-foaming polypropylene sheet, wherein said micro-foaming polypropylene sheet is made by following percentage by weight raw material: disproportionation polypropylene 30～70%, atactic copolymerized polypropene 10～40%, high density polyethylene (HDPE) 5～10%, ultra-fine nucleator 5～10%, inorganic filler 0～9%, carboxyl compatilizer 1～3%, citric acid are blowing agent 0.5～2.0%; Wherein said disproportionation polypropylene is the chemical modification acrylic resin of melt index at 0.5～1.0g/10min; Described atactic copolymerized polypropene is the technical grade acrylic resin of melt index at 0.5～3.0g/10min; Described high density polyethylene (HDPE) is the industrial-grade polyethylene resin of melt index at 1.0～3.0g/10min.
2. automotive trim micro-foaming polypropylene-nonwoven cloth composite panel according to claim 1, the expansion ratio that it is characterized in that described micro-foaming polypropylene sheet is 1.2～5.0, foaming polypropylene sheet density is 0.2～0.8g/cm
3, thickness is 0.5～6.0mm.
3. automotive trim micro-foaming polypropylene-nonwoven cloth composite panel according to claim 1 is characterized in that described ultra-fine nucleator is one or both the mixture in calcium carbonate superfine powder and the refining titanium dioxide, and fineness is more than 2000 orders.
4. automotive trim micro-foaming polypropylene-nonwoven cloth composite panel according to claim 1 is characterized in that described inorganic filler is one or both the mixture in glass fibre and the inorganic particle.
5. automotive trim micro-foaming polypropylene-nonwoven cloth composite panel according to claim 4 is characterized in that described glass fibre is the 1mm dry method chopped strand of surface-coated silylation size; Described inorganic particle is the fineness of surface-coated silylation size superfine talcum powder more than 1000 orders and one or both the mixture in the ultra-fine lithopone.
6. automotive trim micro-foaming polypropylene-nonwoven cloth composite panel according to claim 1 is characterized in that described carboxyl compatilizer is the ethylene-propylene acid oligomer of acrylic monomers unit content 12～20%; Described citric acid is that blowing agent is citric acid and sodium bicarbonate NaHCO
3The equivalent mixture, fineness is more than 1000 orders.
7. automotive trim micro-foaming polypropylene-nonwoven cloth composite panel according to claim 1 is characterized in that described nonwoven is grammes per square metre 30-300g/m
2Terylene non-woven fabric or non-woven viscose fabric.
8. one kind as the preparation method of the arbitrary described automotive trim of claim 1～7 with micro-foaming polypropylene-nonwoven cloth composite panel, it is characterized in that mainly may further comprise the steps:
(A) foamed material premix: with disproportionation polypropylene, atactic copolymerized polypropene, high density polyethylene (HDPE), ultra-fine nucleator, inorganic filler, carboxyl compatilizer, citric acid is that blowing agent places the batch mixer stirring at low speed, takes out stand-by after 5～20 minutes; Wherein said disproportionation polypropylene is the chemical modification acrylic resin of melt index at 0.5～1.0g/10min; Described atactic copolymerized polypropene is the technical grade acrylic resin of melt index at 0.5～3.0g/10min; Described high density polyethylene (HDPE) is the industrial-grade polyethylene resin of melt index at 1.0～3.0g/10min
(B) extrusion foaming sheet material: the premix that (A) obtained drops into the charge door of twin-screw extrusion sheet machine, and barrel temperature is 150～210 ℃, and die head temperature is 165～175 ℃, and screw speed is 20～150 rev/mins, obtains micro-foaming polypropylene sheet after extruding;
(C) compound nonwoven cloth: the foaming plate single or double compound nonwoven cloth of extruding, finalize the design through three roller roll-ins together, three roll temperatures are controlled at 80～95 ℃, through cutter specification cutting on demand, obtain the automotive trim micro-foaming polypropylene-nonwoven cloth composite panel of single face compound nonwoven cloth or two-sided compound nonwoven cloth again.
9. the automotive trim according to claim 8 preparation method of micro-foaming polypropylene-nonwoven cloth composite panel, the screw slenderness ratio that it is characterized in that described twin-screw extrusion sheet machine is 33: 1～55: 1, it is buttoned-up status that the full section of barrel must not have exhaust apparatus or exhaust apparatus, dispose a self balancing gear type melt pressure pump between barrel end and extrusion die, extrusion die is to be suitable for three-layer co-extruded multithread duct device.
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| CN102504426A (en) * | 2011-10-26 | 2012-06-20 | 重庆巨翁塑料制造有限公司 | Foamed polypropylene composite board and preparation method thereof |
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| CN106188826A (en) * | 2016-06-25 | 2016-12-07 | 苏州本易材料科技有限公司 | Compound PP foamed board of a kind of insulation and preparation method thereof |
| CN106120363A (en) * | 2016-08-31 | 2016-11-16 | 苏州长晟无纺科技有限公司 | Automotive trim film non-woven fabrics |
| CN107189184A (en) * | 2017-06-19 | 2017-09-22 | 苏州锐耐洁电子科技新材料有限公司 | A kind of wear-resistant type packaging material |
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