CN105646834A - Paint surface protection film and application thereof in vehicle film pasting - Google Patents
Paint surface protection film and application thereof in vehicle film pasting Download PDFInfo
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- CN105646834A CN105646834A CN201511001342.6A CN201511001342A CN105646834A CN 105646834 A CN105646834 A CN 105646834A CN 201511001342 A CN201511001342 A CN 201511001342A CN 105646834 A CN105646834 A CN 105646834A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/664—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a paint surface protection film and an application thereof in vehicle film pasting. The paint surface protection film is made from, by weight, 1-3 parts of polyester polyol, 4-8 parts of methyl diphenylene diisocyanate and 2-6 parts of a chain extender. The paint surface protection film produced in the invention can be plasticized after being heated, the chemical structure of the film has no or little chemical cross-linking, the molecules of the film are basically linear, and the paint surface protection film has the advantages of high modulus, high strength, high elongation, high elasticity, excellent wear, oil, low temperature, ageing and water resistance, and realization of recycling of wastes.
Description
Technical field
The present invention relates to a kind of automobile adhesive film, in particular to a kind of lacquer painting protective membrane and the application in traffic allowance film thereof.
Background technology
The car film of automobile is the parts that automobile is essential, plays the effect of protection automobile. Traditional automobile adhesive film pastes film effect to avoid dust, impurity effect; first will by cleaning for vehicle body glass clean before automobile adhesive film; or use the cloth without fibre shedding to dip in the alcohol with 50% or Virahol or acetone to be cleaned; or with suds, clear water, only could with the automobile painting surface protective film of adhesive type through the clean vehicle body that cleans. The position may being damaged to during automobile adhesive film to be covered in advance, with positions such as anti-scratch car paint, interior decorations, it is possible to the accessory of impact construction also needs to dismantle in advance. Traditional lacquer painting protective membrane pastes film, is cut out film by hand, and whole car carries out cutting out film and installs, it is necessary to the position pasting film cannot perfectly make automobile film be combined with lacquer painting, therefore, pastes in membrane process and can move around.
Traditional sanction membrane technique adopts and manually cuts out film, and severe is dependent on empirical value, shortcoming stdn, and easily cause waste of material, causing the flat effect of StoreFront because of the unnecessary sanction film time and paste the waste of film turnover rate, artificial film of cutting out takes more than 30 minutes, causes and extends the waiting period of car owner.
The defect basic reason of above-mentioned subsides film and sanction film is that the subsides film of preparation can not meet the demand of existing market, therefore, optimizes the formula of automobile adhesive film, and optimization production technique, become urgent problem in industry.
Summary of the invention
The present invention is to overcome defect in above-mentioned prior art, by optimizing formula and the production technique of automobile adhesive film, it is proposed to a kind of lacquer painting protective membrane and the application in traffic allowance film thereof.
A kind of lacquer painting protective membrane, is made up of the raw material of following weight part number: polyester polyol 1-3 part, diphenylmethanediisocyanate 4-8 part, chainextender 2-6 part.
Isocyanate index R=(the NCO/OH)=0.97-1.03 of described diphenylmethanediisocyanate.
Described polyester polyol is selected from polyethylene glycol adipate, diol ester in poly-adipate glycol, gathers one or more in adipate glycol butanediol ester.
Described polyethylene glycol adipate (PEA) M=2000, hydroxyl value is 55 �� 3mgKOH/g; Diol ester (PDA) M=2000 in poly-adipate glycol, hydroxyl value is 56 �� 2.5mgKOH/g; Poly-adipate glycol butanediol ester (PBA) M=2000, hydroxyl value 56 �� 2.5mgKOH/g.
Described chainextender is selected from 1.4 butyleneglycols, 1.3 butyleneglycols, 1.3 pentanediols, 1.4 pentanediols, 1.5 pentanediols, 1.3 hexylene glycols, 1.4 hexylene glycols, 1.5 hexylene glycols, one or more in 1.6 hexylene glycols.
The preparation method of above-mentioned lacquer painting protective membrane, carries out in accordance with the following steps:
(1) add A batch can after being melted by polyester polyol, it is heated to 100-120 DEG C, vacuum hydro-extraction 2-3h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing the logical nitrogen of vacuum;
(2) add B batch can after being melted by diphenylmethanediisocyanate, it is heated to 60-70 DEG C, vacuum outgas 0.5-1h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
(3) chainextender is added C batch can and it is heated to 30-50 DEG C, vacuum hydro-extraction 0.5-1h under agitation condition, make it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
(4) by A batch can, B batch can, the material in C batch can respectively pump enter A pump; B pump, in C pump, is delivered to casting molding machine; after stirring just mixing; transport to two spiral shell extruder and make its mixing and chemical reaction further, temperature of reaction 80-200 DEG C, pressure 4-7MPa; finally carry out pelletizing; make polyester type Polyurethane Thermoplastic Elastomer, polyester type Polyurethane Thermoplastic Elastomer is melted, casting machine is made lacquer painting protective membrane.
Described A batch can, B batch can and C batch can are respectively equipped with two, a vacuum hydro-extraction, and another gives volume pump feed.
The temperature adjustment of described pair of spiral shell extruder is simplified is that nine sections of temperature adjustments are simplified: one section of temperature control 80-180 DEG C, two sections of temperature controls 100-200 DEG C, three sections of temperature controls 150-210 DEG C, four sections of temperature controls 150-210 DEG C, five sections of temperature controls 150-210 DEG C, six sections of temperature controls 150-210 DEG C, seven sections of temperature controls 140-200 DEG C, eight sections of temperature controls 100-190 DEG C, nine sections of temperature controls 90-200 DEG C, head temperature control 90-200 DEG C.
Compared with prior art, the present invention has following useful effect: when lacquer painting protective membrane prepared by the present invention pastes film, and cost of labor reduces, by 2 day engineering time foreshortened to 1 day (2 people paste a chassis) originally; Even not needing senior big work technician, middle work can complete. Construction process can save the time cutting out film, and can easily put up. Station cost reduction half: reduce subsides film station and take, increase circulation rate; Effective lifting construction unit surface benefit. When lacquer painting protective membrane prepared by the present invention pastes film, it is possible to prevent the generation of following thing: grilled gun and the caused damage of blade, wound drawn by glass breaking, glass; corium scalds damage, corium scratches; wound is drawn in lacquer painting abrasion, lacquer painting, and adhesive tape is baked bad, adhesive tape and scratched, in other decorations roasting bad, scald and scratch, draw wound. Lacquer painting protective membrane prepared by the present invention pastes film heating plasticization; not having in chemical structure or rare chemically crosslinked, molecule is substantially linear, has high-modulus, high strength, high drawing and snappiness; excellent wear-resisting, oil resistant, resistance to low temperature, ageing-resistant performance, waste material recoverable.
Embodiment
Below the specific embodiment of the present invention is described in detail, it should be understood that protection scope of the present invention is not by the restriction of embodiment.
The device performance parameters adopted in following embodiment is as follows:
A expects (PES) tank: 2 �� 200LThree-decker: stainless steel inner container, heat-conducting oil heating chuck, outsourcing hard polyurethane foam thermal insulation layer, is provided with accurate shaft seal to ensure the resistance to air loss of batch can with frame type stirring (rotating speed 30r.p.m, power 0.55kw).It is provided with charging opening, visor, vacuum and adds N2 mouth, minimum level warning device, heating power 2 �� 4.5kw.
B expects (MDI) tank: 2 �� 120LThree-decker: stainless steel inner container, heat-conducting oil heating chuck, outsourcing hard polyurethane foam thermal insulation layer, is provided with accurate shaft seal to ensure the resistance to air loss of batch can with frame type stirring (rotating speed 30r.p.m, power 0.55kw). It is provided with charging opening, visor, vacuum and adds N2 mouth, minimum level warning device, heating power 2 �� 4.5kw.
C expects (BDO) tank: 2 �� 80LThree-decker: stainless steel inner container, heat-conducting oil heating chuck, outsourcing hard polyurethane foam thermal insulation layer, is provided with accurate shaft seal to ensure the resistance to air loss of batch can with frame type stirring (rotating speed 30r.p.m, power 0.55kw). It is provided with charging opening, visor, vacuum and adds N2 mouth, minimum level warning device, heating power (1+2) kw.
Casting molding machine: always water fluence: 1-2kg/min (1440-2880kg/d) design mixture ratio: A:B:C=100:40:10; Error in dipping�ܡ� 0.5%; Working temperature: A expects: 100-120 DEG C; B expects: 60-70 DEG C; C expects: 30-50 DEG C, pouring head: 70-80 DEG C; Temperature error: �� 2 DEG C of vacuum tightness: 5-10mmHg. Pouring head: three groups of part high temperature modification pouring heads, can accomplish and mix and do not produce bubble, agitator motor 1.5kw2P, rotating speed 3000-8000r.p.m (speed control by frequency variation).
Volume pump: high precision low speed volume pump (withstand voltage 10MPa, heatproof 450 DEG C), by high class gear deceleration motor transmission, uses import frequency converter timing.
A pump GJ20 rotating speed 30-200r.p.m, power 0.75kw4P, discharge capacity 0.6-4kg/min;
B pump GJ9 rotating speed 30-200r.p.m, power 0.75kw4P, discharge capacity 0.3-1.8kg/min;
C pump GJ2.4 rotating speed 30-200r.p.m, power 0.75kw4P, discharge capacity 0.08-0.5kg/min.
Control and electrical equipment:
1. adopt digital display intelligent temperature controller, make strainer, volume pump and pouring head heating reliable, precise control;
2. pressure, rotating speed (proportioning) etc. adopt digital precision meter;
3. electrical equipment adopts import element.
Double screw rod extruder:
LSF-68 type (nine sections of temperature adjustments are simplified) (JB/T5420-91); Screw rod nominal diameter:Width between centers 60, the gap��0.02mm of screw slenderness ratio 48, screw rod and cylinder; The highest rotating speed 260r.p.m of screw rod, (screw speed should be advisable with material residence time 1-2min in screw tube) main motor current 40kw, production peak 200kg/h.
Embodiment 1
A kind of lacquer painting protective membrane, is made up of the raw material of following weight part number: polyethylene glycol adipate 2 parts, diphenylmethanediisocyanate 6 parts, 1.4 butyleneglycols 4 parts.
The preparation method of above-mentioned lacquer painting protective membrane, carries out in accordance with the following steps:
(1) add A batch can after being melted by polyethylene glycol adipate, it is heated to 110 DEG C, vacuum hydro-extraction 2.5h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing the logical nitrogen of vacuum;
(2) add B batch can after being melted by diphenylmethanediisocyanate, it is heated to 65 DEG C, vacuum outgas 0.8h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
(3) 1.4 butyleneglycols are added C batch can and it is heated to 40 DEG C, vacuum hydro-extraction 0.8h under agitation condition, make it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
Described A batch can, B batch can and C batch can are respectively equipped with two, a vacuum hydro-extraction, and another gives volume pump feed.
(4) by A batch can, B batch can, the material in C batch can respectively pump enter A pump; B pump, in C pump, is delivered to casting molding machine; after stirring just mixing; transport to two spiral shell extruder and make its mixing and chemical reaction further, temperature of reaction 80-200 DEG C, pressure 5MPa; finally carry out pelletizing; make polyester type Polyurethane Thermoplastic Elastomer, polyester type Polyurethane Thermoplastic Elastomer is melted, casting machine is made lacquer painting protective membrane.The temperature adjustment of described pair of spiral shell extruder is simplified is that nine sections of temperature adjustments are simplified: one section of temperature control 80-180 DEG C, two sections of temperature controls 100-200 DEG C, three sections of temperature controls 150-210 DEG C, four sections of temperature controls 150-210 DEG C, five sections of temperature controls 150-210 DEG C, six sections of temperature controls 150-210 DEG C, seven sections of temperature controls 140-200 DEG C, eight sections of temperature controls 100-190 DEG C, nine sections of temperature controls 90-200 DEG C, head temperature control 90-200 DEG C.
The lacquer painting protective membrane of preparation has high-modulus, high strength, high drawing and snappiness, and excellent wear-resisting, oil resistant, resistance to low temperature, ageing-resistant performance, shortcoming is not water-fast.
Embodiment 2
A kind of lacquer painting protective membrane, is made up of the raw material of following weight part number: diol ester 1 part in poly-adipate glycol, diphenylmethanediisocyanate 4 parts, 1.5 pentanediols 2 parts.
The preparation method of above-mentioned lacquer painting protective membrane, carries out in accordance with the following steps:
(1) add A batch can after being melted by diol ester in poly-adipate glycol, it is heated to 100 DEG C, vacuum hydro-extraction 2h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing the logical nitrogen of vacuum;
(2) add B batch can after being melted by diphenylmethanediisocyanate, it is heated to 60 DEG C, vacuum outgas 0.5h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
(3) 1.5 pentanediols are added C batch can and it is heated to 30 DEG C, vacuum hydro-extraction 0.5h under agitation condition, make it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
Described A batch can, B batch can and C batch can are respectively equipped with two, a vacuum hydro-extraction, and another gives volume pump feed.
(4) by A batch can, B batch can, the material in C batch can respectively pump enter A pump; B pump, in C pump, is delivered to casting molding machine; after stirring just mixing; transport to two spiral shell extruder and make its mixing and chemical reaction further, temperature of reaction 80-200 DEG C, pressure 4MPa; finally carry out pelletizing; make polyester type Polyurethane Thermoplastic Elastomer, polyester type Polyurethane Thermoplastic Elastomer is melted, casting machine is made lacquer painting protective membrane. The temperature adjustment of described pair of spiral shell extruder is simplified is that nine sections of temperature adjustments are simplified: one section of temperature control 80-180 DEG C, two sections of temperature controls 100-200 DEG C, three sections of temperature controls 150-210 DEG C, four sections of temperature controls 150-210 DEG C, five sections of temperature controls 150-210 DEG C, six sections of temperature controls 150-210 DEG C, seven sections of temperature controls 140-200 DEG C, eight sections of temperature controls 100-190 DEG C, nine sections of temperature controls 90-200 DEG C, head temperature control 90-200 DEG C.
The lacquer painting protective membrane of preparation has high-modulus, high strength, high drawing and snappiness, and excellent wear-resisting, oil resistant, resistance to low temperature, ageing-resistant performance, shortcoming is not water-fast.
Embodiment 3
A kind of lacquer painting protective membrane, is made up of the raw material of following weight part number: poly-adipate glycol butanediol ester 2 parts, diphenylmethanediisocyanate 6 parts, 1.6 hexylene glycols 4 parts.
The preparation method of above-mentioned lacquer painting protective membrane, carries out in accordance with the following steps:
(1) add A batch can after being melted by poly-adipate glycol butanediol ester, it is heated to 120 DEG C, vacuum hydro-extraction 3h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing the logical nitrogen of vacuum;
(2) add B batch can after being melted by diphenylmethanediisocyanate, it is heated to 70 DEG C, vacuum outgas 1h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
(3) 1.6 hexylene glycols are added C batch can and it is heated to 50 DEG C, vacuum hydro-extraction 1h under agitation condition, make it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
Described A batch can, B batch can and C batch can are respectively equipped with two, a vacuum hydro-extraction, and another gives volume pump feed.
(4) by A batch can, B batch can, the material in C batch can respectively pump enter A pump; B pump, in C pump, is delivered to casting molding machine; after stirring just mixing; transport to two spiral shell extruder and make its mixing and chemical reaction further, temperature of reaction 80-200 DEG C, pressure 7MPa; finally carry out pelletizing; make polyester type Polyurethane Thermoplastic Elastomer, polyester type Polyurethane Thermoplastic Elastomer is melted, casting machine is made lacquer painting protective membrane. The temperature adjustment of described pair of spiral shell extruder is simplified is that nine sections of temperature adjustments are simplified: one section of temperature control 80-180 DEG C, two sections of temperature controls 100-200 DEG C, three sections of temperature controls 150-210 DEG C, four sections of temperature controls 150-210 DEG C, five sections of temperature controls 150-210 DEG C, six sections of temperature controls 150-210 DEG C, seven sections of temperature controls 140-200 DEG C, eight sections of temperature controls 100-190 DEG C, nine sections of temperature controls 90-200 DEG C, head temperature control 90-200 DEG C.
The lacquer painting protective membrane of preparation has high-modulus, high strength, high drawing and snappiness, and excellent wear-resisting, oil resistant, resistance to low temperature, ageing-resistant performance, shortcoming is not water-fast.
Embodiment 4
A kind of lacquer painting protective membrane, is made up of the raw material of following weight part number: polyethylene glycol adipate 2 parts, diphenylmethanediisocyanate 6 parts, 1.4 butyleneglycols 4 parts, firefly Lin's extract 3 parts.
The extracting method of described firefly Lin's extract is: firefly Lin is dried, clays into power, and adds 70% alcohol reflux 3 times of 3-5 times of weight part number, and merging filtrate, steams drying one-tenth.
The preparation method of above-mentioned lacquer painting protective membrane, carries out in accordance with the following steps:
(1) add A batch can after being melted by polyethylene glycol adipate, it is heated to 110 DEG C, vacuum hydro-extraction 2.5h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing the logical nitrogen of vacuum;
(2) add B batch can after being melted by diphenylmethanediisocyanate, it is heated to 65 DEG C, vacuum outgas 0.8h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
(3) 1.4 butyleneglycols and firefly Lin's extract are added C batch can and it is heated to 40 DEG C, vacuum hydro-extraction 0.8h under agitation condition, make it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
Described A batch can, B batch can and C batch can are respectively equipped with two, a vacuum hydro-extraction, and another gives volume pump feed.
(4) by A batch can, B batch can, the material in C batch can respectively pump enter A pump; B pump, in C pump, is delivered to casting molding machine; after stirring just mixing; transport to two spiral shell extruder and make its mixing and chemical reaction further, temperature of reaction 80-200 DEG C, pressure 5MPa; finally carry out pelletizing; make polyester type Polyurethane Thermoplastic Elastomer, polyester type Polyurethane Thermoplastic Elastomer is melted, casting machine is made lacquer painting protective membrane. The temperature adjustment of described pair of spiral shell extruder is simplified is that nine sections of temperature adjustments are simplified: one section of temperature control 80-180 DEG C, two sections of temperature controls 100-200 DEG C, three sections of temperature controls 150-210 DEG C, four sections of temperature controls 150-210 DEG C, five sections of temperature controls 150-210 DEG C, six sections of temperature controls 150-210 DEG C, seven sections of temperature controls 140-200 DEG C, eight sections of temperature controls 100-190 DEG C, nine sections of temperature controls 90-200 DEG C, head temperature control 90-200 DEG C.
The lacquer painting protective membrane of preparation has high-modulus, high strength, high drawing and snappiness, excellent wear-resisting, oil resistant, resistance to low temperature, ageing-resistant performance, water-tolerant.
Embodiment 5
A kind of lacquer painting protective membrane, is made up of the raw material of following weight part number: polyethylene glycol adipate 2 parts, diphenylmethanediisocyanate 6 parts, 1.4 butyleneglycols 4 parts, snakegourd extract 3 parts.
The extracting method of described firefly Lin's extract is: is dried by snakegourd fruit, gets its duricrust, clay into power, and adds 70% alcohol reflux 3 times of 3-5 times of weight part number, and merging filtrate, steams drying one-tenth.
The preparation method of above-mentioned lacquer painting protective membrane, carries out in accordance with the following steps:
(1) add A batch can after being melted by polyethylene glycol adipate, it is heated to 110 DEG C, vacuum hydro-extraction 2.5h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing the logical nitrogen of vacuum;
(2) add B batch can after being melted by diphenylmethanediisocyanate, it is heated to 65 DEG C, vacuum outgas 0.8h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
(3) 1.4 butyleneglycols and snakegourd extract are added C batch can and it is heated to 40 DEG C, vacuum hydro-extraction 0.8h under agitation condition, make it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
Described A batch can, B batch can and C batch can are respectively equipped with two, a vacuum hydro-extraction, and another gives volume pump feed.
(4) by A batch can, B batch can, the material in C batch can respectively pump enter A pump; B pump, in C pump, is delivered to casting molding machine; after stirring just mixing; transport to two spiral shell extruder and make its mixing and chemical reaction further, temperature of reaction 80-200 DEG C, pressure 5MPa; finally carry out pelletizing; make polyester type Polyurethane Thermoplastic Elastomer, polyester type Polyurethane Thermoplastic Elastomer is melted, casting machine is made lacquer painting protective membrane. The temperature adjustment of described pair of spiral shell extruder is simplified is that nine sections of temperature adjustments are simplified: one section of temperature control 80-180 DEG C, two sections of temperature controls 100-200 DEG C, three sections of temperature controls 150-210 DEG C, four sections of temperature controls 150-210 DEG C, five sections of temperature controls 150-210 DEG C, six sections of temperature controls 150-210 DEG C, seven sections of temperature controls 140-200 DEG C, eight sections of temperature controls 100-190 DEG C, nine sections of temperature controls 90-200 DEG C, head temperature control 90-200 DEG C.
The lacquer painting protective membrane of preparation has high-modulus, high strength, high drawing and snappiness, excellent wear-resisting, oil resistant, resistance to low temperature, ageing-resistant performance, water-tolerant.
Several specific embodiments being only the present invention disclosed in above, but, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (6)
1. a lacquer painting protective membrane, it is characterised in that, it is made up of the raw material of following weight part number: polyester polyol 1-3 part, diphenylmethanediisocyanate 4-8 part, chainextender 2-6 part.
2. lacquer painting protective membrane according to claim 1, it is characterised in that, described polyester polyol is selected from polyethylene glycol adipate, diol ester in poly-adipate glycol, gathers one or more in adipate glycol butanediol ester.
3. lacquer painting protective membrane according to claim 1, it is characterised in that, described chainextender is selected from 1.4 butyleneglycols, 1.3 butyleneglycols; 1.3 pentanediols, 1.4 pentanediols, 1.5 pentanediols, 1.3 hexylene glycols; 1.4 hexylene glycols, 1.5 hexylene glycols, one or more in 1.6 hexylene glycols.
4. the preparation method of lacquer painting protective membrane according to claim 1, it is characterised in that, carry out in accordance with the following steps:
(1) add A batch can after being melted by polyester polyol, it is heated to 100-120 DEG C, vacuum hydro-extraction 2-3h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing the logical nitrogen of vacuum;
(2) add B batch can after being melted by diphenylmethanediisocyanate, it is heated to 60-70 DEG C, vacuum outgas 0.5-1h under agitation condition, makes it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
(3) chainextender is added C batch can and it is heated to 30-50 DEG C, vacuum hydro-extraction 0.5-1h under agitation condition, make it water content < 0.05%, for subsequent use after releasing vacuum and leading to nitrogen;
(4) by A batch can, B batch can, the material in C batch can respectively pump enter A pump; B pump, in C pump, is delivered to casting molding machine; after stirring just mixing; transport to two spiral shell extruder and make its mixing and chemical reaction further, temperature of reaction 80-200 DEG C, pressure 4-7MPa; finally carry out pelletizing; make polyester type Polyurethane Thermoplastic Elastomer, polyester type Polyurethane Thermoplastic Elastomer is melted, casting machine is made lacquer painting protective membrane.
5. the preparation method of lacquer painting protective membrane according to claim 4, it is characterised in that, described A batch can, B batch can and C batch can are respectively equipped with two, a vacuum hydro-extraction, and another gives volume pump feed.
6. the preparation method of lacquer painting protective membrane according to claim 4; it is characterized in that, the temperature adjustment of described pair of spiral shell extruder is simplified is that nine sections of temperature adjustments are simplified: one section of temperature control 80-180 DEG C, two sections of temperature controls 100-200 DEG C; three sections of temperature controls 150-210 DEG C; four sections of temperature controls 150-210 DEG C, five sections of temperature controls 150-210 DEG C, six sections of temperature controls 150-210 DEG C; seven sections of temperature controls 140-200 DEG C; eight sections of temperature controls 100-190 DEG C, nine sections of temperature controls 90-200 DEG C, head temperature control 90-200 DEG C.
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| CN201511001342.6A CN105646834A (en) | 2015-12-28 | 2015-12-28 | Paint surface protection film and application thereof in vehicle film pasting |
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| CN201511001342.6A CN105646834A (en) | 2015-12-28 | 2015-12-28 | Paint surface protection film and application thereof in vehicle film pasting |
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