CN109536115A - A kind of preparation method of solvent type PU Flock Adhesive - Google Patents

A kind of preparation method of solvent type PU Flock Adhesive Download PDF

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Publication number
CN109536115A
CN109536115A CN201811462504.XA CN201811462504A CN109536115A CN 109536115 A CN109536115 A CN 109536115A CN 201811462504 A CN201811462504 A CN 201811462504A CN 109536115 A CN109536115 A CN 109536115A
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China
Prior art keywords
preparation
polyester
mixture
solvent type
flock adhesive
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Application number
CN201811462504.XA
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Chinese (zh)
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CN109536115B (en
Inventor
陆建明
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Suzhou Lushi New Materials Co Ltd
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Suzhou Lushi New Materials Co Ltd
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Priority to CN201811462504.XA priority Critical patent/CN109536115B/en
Publication of CN109536115A publication Critical patent/CN109536115A/en
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/06—Polyurethanes from polyesters
    • 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
    • C08G18/4202—Two or more polyesters of different physical or chemical nature
    • 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
    • C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
    • C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
    • 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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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The present invention relates to a kind of preparation method of solvent type PU Flock Adhesive, it is dehydrated to obtain the first mixture the following steps are included: polyester diol, polyester trihydroxylic alcohol and thermoplasticity TPU are dissolved in the mixed solvent by (a)；The mass ratio of the polyester diol, polyester trihydroxylic alcohol and thermoplasticity TPU is 100:40 ~ 60:15 ~ 25；(b) it is added liquefied mdi into the first mixture, is continuously mixed 10 ~ 15 hours after closed by rocking evenly machine, then sealing and standing 3 days, and adjusting be 38 ~ 43%, viscosity to solid content is 200~400cps.It is used directly for the flocking technique of PVC sealing strip in this way, does not need extemporaneous preparation, condition of cure meets the requirement of online flocking technique (120 DEG C, 3 ~ 5min), and meets the requirement of flocking abrasion performance.

Description

A kind of preparation method of solvent type PU Flock Adhesive
Technical field
The invention belongs to adhesive areas, are related to a kind of Flock Adhesive, and in particular to a kind of preparation of solvent type PU Flock Adhesive Method.
Background technique
Automobile flocking sealing strip mainly includes vehicle window side seal item (water is cut) and windowpane run channel, and function is external wind The sealing of rain prevents dust entrance, noise-decreasing and glass to be easier sliding etc..It is applied to the Flock Adhesive of PVC sealing strip at present Predominantly bicomponent system (i.e. two component polyurethane solvent adhesive), the up time is generally 1~2 after component A, B component mixing Hour, generally take a small amount of multiple, ready-to-use technique；If field management is more chaotic, while component A, B component mix Afterwards, viscosity continues to increase, and flocking quality is difficult to effectively control.
Summary of the invention
A kind of preparation method of solvent type PU Flock Adhesive is provided the invention aims to overcome the deficiencies in the prior art.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of preparation method of solvent type PU Flock Adhesive, it The following steps are included:
(a) polyester diol, polyester trihydroxylic alcohol and thermoplasticity TPU are dissolved in the mixed solvent, are dehydrated to obtain the first mixture； The mass ratio of the polyester diol, polyester trihydroxylic alcohol and thermoplasticity TPU is 100:40~60:15~25；
(b) liquefied mdi is added into the first mixture, passes through rocking evenly machine after closed and continuously shakes up mixing 10~15 hours, More days of sealing and standing again, and adjust to solid content be 38~43%, viscosity is 200~400cps；In above-mentioned material NCO/OH value (molar ratio) is 1.4~1.8.
Optimally, the mass ratio of the polyester diol, polyester trihydroxylic alcohol and thermoplasticity TPU is 100:50:20.
Optimally, the mixed solvent is in cyclohexanone, butanone, toluene, dimethylbenzene, ethyl acetate and butyl acetate A variety of compositions mixture.
Optimally, in step (b), the time of the standing is 3 days.
Due to the above technical solutions, the present invention has the following advantages over the prior art: solvent type PU of the present invention The preparation method of Flock Adhesive, by the way that the first mixture of specific components and liquefied mdi are carried out hybrid reaction and adjust product Solid content and viscosity are used directly for the flocking technique of PVC sealing strip in this way, do not need extemporaneous preparation, and condition of cure Meet the requirement of online flocking technique (120 DEG C of 3~5min of@), and meets the requirement of flocking abrasion performance.
Specific embodiment
The preparation method of solvent type PU Flock Adhesive of the present invention, it the following steps are included: (a) by polyester diol, polyester three The pure and mild thermoplasticity TPU of member is dissolved in the mixed solvent, is dehydrated to obtain the first mixture；The polyester diol, polyester trihydroxylic alcohol and heat The mass ratio of plasticity TPU is 100:40~60:15~25；(b) liquefied mdi is added into the first mixture, it is close after mixing Envelope stand more days, and adjust to solid content be 38~43%, viscosity is 200~400cps；NCO/OH in above-mentioned material Being worth (molar ratio) is 1.4~1.8.By the way that the first mixture of specific components and liquefied mdi are carried out hybrid reaction and adjust production The solid content and viscosity of object, are used directly for the flocking technique of PVC sealing strip in this way, do not need extemporaneous preparation, and solidify Condition meets the requirement of online flocking technique (120 DEG C of 3~5min of@) (i.e. high temperature rapid curing), and meets flocking abrasion performance and want It asks.
The mass ratio of the polyester diol, polyester trihydroxylic alcohol and thermoplasticity TPU is preferably 100:50:20；PU plants at this time The best performance of suede glue.The mixed solvent is in cyclohexanone, butanone, toluene, dimethylbenzene, ethyl acetate and butyl acetate A variety of compositions mixture；In step (b), the time of the standing is 3 days
Below in conjunction with embodiment, invention is further explained.
Embodiment 1
The present embodiment provides a kind of preparation method of solvent type PU Flock Adhesive, it the following steps are included:
(a) by 100 parts of polyester diols (generally use poly adipate succinic acid ester, molecular weight be about 2000), 50 parts it is poly- Ester trihydroxylic alcohol (molecular weight is about 400) and 20 parts of thermoplasticity TPU (55~65 DEG C of activation temperature) be dissolved in mixed solvent (cyclohexanone: Butanone=1:2, volume ratio) in, it is dehydrated to obtain the first mixture；
(b) 100 parts of liquefied mdis are added into the first mixture, passes through rocking evenly machine after closed and continuously shakes up mixing 10~15 Hour, then sealing and standing 3 days, and adjust to solid content be 38~43%, viscosity is 200~400cps.
Embodiment 2
The present embodiment provides a kind of preparation method of solvent type PU Flock Adhesive, it and it is almost the same in embodiment 1, it is different : in step (a), the additional amount of polyester diol, polyester trihydroxylic alcohol and thermoplasticity TPU is respectively 100 parts, 50 parts and 25 Part.
Embodiment 3
The present embodiment provides a kind of preparation method of solvent type PU Flock Adhesive, it and it is almost the same in embodiment 1, it is different : in step (a), the additional amount of polyester diol, polyester trihydroxylic alcohol and thermoplasticity TPU is respectively 100 parts, 55 parts and 15 Part.
Embodiment 4
The present embodiment provides a kind of preparation method of solvent type PU Flock Adhesive, it and it is almost the same in embodiment 1, it is different : in step (a), the additional amount of polyester diol, polyester trihydroxylic alcohol and thermoplasticity TPU is respectively 100 parts, 55 parts and 20 Part.
Comparative example 1
This example provides a kind of preparation method of solvent type PU Flock Adhesive, it with it is almost the same in embodiment 1, it is different It is: without containing thermoplasticity TPU.
Comparative example 2
This example provides a kind of preparation method of solvent type PU Flock Adhesive, it with it is almost the same in embodiment 3, it is different It is: without containing thermoplasticity TPU.
PU Flock Adhesive obtained in Examples 1 to 4, comparative example 1~2 is applied to the preparation of flocking exemplar, specific as follows:
(1) PVC sealing strip is cleaned with isopropanol；
(2) uniform gluing is in by PVC sealing strip surface, flocking (common process；Electrostatic spinning, voltage are 3~4kv/cm)； Then in 120 DEG C of heat drying 4min, then room temperature 3 days or more.
It is tested for the property by " vehicle flocking sealing strip abrasion test method, QC/T 624-2000 ", the result is shown in tables Shown in 1.
The flocking exemplar performance table obtained in 1 Examples 1 to 4 of table, comparative example 1~2 using PU Flock Adhesive
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention, it is all according to the present invention Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.

Claims (3)

1. a kind of preparation method of solvent type PU Flock Adhesive, which is characterized in that it the following steps are included:
(a) polyester diol, polyester trihydroxylic alcohol and thermoplasticity TPU are dissolved in the mixed solvent, are dehydrated to obtain the first mixture；It is described The mass ratio of polyester diol, polyester trihydroxylic alcohol and thermoplasticity TPU is 100:40 ~ 60:15 ~ 25；
(b) liquefied mdi is added into the first mixture, passes through rocking evenly machine after closed and continuously mixes 10 ~ 15 hours, then sealing and standing More days, and adjusting be 38 ~ 43%, viscosity to solid content is 200~400cps.
2. the preparation method of solvent type PU Flock Adhesive according to claim 1, it is characterised in that: the mixed solvent be selected from The mixture of a variety of compositions in cyclohexanone, butanone, toluene, dimethylbenzene, ethyl acetate and butyl acetate.
3. the preparation method of solvent type PU Flock Adhesive according to claim 1, it is characterised in that: in step (b), the standing Time 3 days.
CN201811462504.XA 2018-12-03 2018-12-03 Preparation method of solvent type PU flocking adhesive Active CN109536115B (en)

Priority Applications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113025211A (en) * 2021-03-01 2021-06-25 陈猛 TPU glue for jean groove bottom flocking and production process thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0531437A (en) * 1991-08-02 1993-02-09 Toyoda Gosei Co Ltd Electrostatically flocked product
CN101012362A (en) * 2007-01-29 2007-08-08 上海九元石油化工有限公司 Method of preparing polyurethane flocking rubber for automobile sealing strip
KR100786584B1 (en) * 2005-01-18 2007-12-21 롬 앤드 하아스 컴패니 Water-based flock adhesives for thermoplastic substrates
CN102516919A (en) * 2011-11-26 2012-06-27 上海三恩化工有限公司 Preparation method of monocomponent polyurethane flocking adhesive

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0531437A (en) * 1991-08-02 1993-02-09 Toyoda Gosei Co Ltd Electrostatically flocked product
KR100786584B1 (en) * 2005-01-18 2007-12-21 롬 앤드 하아스 컴패니 Water-based flock adhesives for thermoplastic substrates
CN101012362A (en) * 2007-01-29 2007-08-08 上海九元石油化工有限公司 Method of preparing polyurethane flocking rubber for automobile sealing strip
CN102516919A (en) * 2011-11-26 2012-06-27 上海三恩化工有限公司 Preparation method of monocomponent polyurethane flocking adhesive

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
罗河胜: "《塑料改性与实用工艺》", 30 April 2007, 广东科技出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113025211A (en) * 2021-03-01 2021-06-25 陈猛 TPU glue for jean groove bottom flocking and production process thereof

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