CN109536116A - Chemicals-resistant corrodes damp solidifying polyurethane hot melt adhesive and preparation method thereof - Google Patents
Chemicals-resistant corrodes damp solidifying polyurethane hot melt adhesive and preparation method thereof Download PDFInfo
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- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
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Abstract
The invention discloses a kind of chemicals-resistant corrosion damp solidifying polyurethane hot melt adhesive and preparation method thereof, and feature is the polyether Glycols for including 1~45 part, 1~30 part of liquid polyesters dihydric alcohol, 1~30 part of crystalline polyester dihydric alcohol, 1~45 part of poly-organosilicon acrylate copolymer, 1~40 part of isocyanates, 0.01~1 part of catalyst, 0.01~1 part of antioxidant and 0.1~1 part of silane coupling agent.Synthesize first it is poly- (methacryloxypropyl list block dimethyl polysiloxane-it is random-methyl methacrylate-is random-acrylic acid-2-ethyl caproite-is random-hydroxy-ethyl acrylate), then organic silicon acrylic ester copolymer segment is introduced in base polyurethane prepolymer for use as, hydroxy acryl acid function monomer can be by poly-organosilicon acrylate copolymer subparticipation to base polyurethane prepolymer for use as synthetic reaction, efficiently synergistic effect, show preferable compatibility, the other raw material compositions of a successive step of going forward side by side and content, improve the chemicals-resistant corrosive nature of polyurethane hot melt.
Description
Technical field
The invention belongs to structure glue technical fields, and in particular to a kind of chemicals-resistant corrosion damp solidifying polyurethane hot melt adhesive
And preparation method thereof, which are mainly applied to electronics and appliance industry, automobile industry, weaving and shoe industry, food packing industry, wood materials
Processing and furniture industry isostructuralism are bonded field.
Background technique
Polyurethane hot melt be a new generation can provide superior adhesion can structure glue, it is to be with polyurethane prepolymer
Material of main part is equipped with a hot melt adhesive prepared by various auxiliary agents.Polyurethane hot melt is easy to use and environmentally friendly, and performance again can be with
Solvent-based thermal melten gel compares favourably.Nearly ten years, polyurethane hot melt is obtained in the high-end fields such as electronics and appliance industry, automobile industry
It is fast-developing and be widely used.Polyurethane hot melt can be divided into thermoplastic polyurethane elastomer hot melt adhesive by cured form difference
And reactive polyurethane hot melt；Reactive polyurethane hot melt is different by its principle of solidification, and can be divided into response type and closing
Type；Reaction type polyurethane hot-melt adhesive (PUR) is a kind of one pack system hot melt adhesive, is melted after heating, and flows scatter coated in substrate
Surface cools down after adherend bonding and forms excellent first adhesive property, then due to substrate surface contain micro-moisture or its
His compound containing active hydrogen reacts with isocyano (- NCO) and chemical crosslink reaction occurs, thus generate have it is highly cross-linked
A kind of structural bonding hot melt adhesive of network and cohesive force greatly.
Currently, reaction type polyurethane hot-melt adhesive has technically obtained unprecedented development, mainly around high-adhesive-strength, low
Melt viscosity, open hour reprocess and cured form etc. carries out performance and optimizes and revises." reactive hot-melt disclosed in Chinese patent
Adhesive ", application number are 201480080313.0, have the removable polyurethane-hot melt adhesive reprocessed, more suitable for height
Hold electronics field application." solvent-free damp solidifying polyurethane hot-melt adhesive composition " disclosed in Chinese patent, application
Number it is 201180047316.0, prepares the poly- ammonia that a kind of low toxicity quickly establishes adhesive property polyacrylate and polyester preparation
Ester thermosol adhesive.It is " organic-silicon-modified disclosed in Chinese patent in order to improve the cured form of reaction type polyurethane hot-melt adhesive
Polyurethane sealant ", application number are 201710271725.8, prepare a kind of organic silicon modified polyurethane sealant, use silicon
Alkane coupling agent replaces isocyano (- NCO), is more suitable for applying under high humidity environment.Currently, the research and development of reaction type polyurethane hot-melt adhesive
Technology meets different type high-end electronic product scope application in fast development.Although reaction type polyurethane hot-melt adhesive can be solid
Highly cross-linked network is formed after change, but there is also chemicals-resistant corrosive nature deficiency problems.This main cause is most of
Reaction type polyurethane hot-melt adhesive joined a large amount of non-reacted thermoplasticity thickening resin or polynary to improve its initial cohesiveness
Acrylic copolymer.These non-reaction system thickening resins can not participate in solidification and generate cross-linked network, to easily reduce polyurethane
The chemicals-resistant corrosive nature of hot melt adhesive coating.
Summary of the invention
A kind of chemicals-resistant corrosion damp solidifying polyurethane is provided the purpose of the present invention is overcome the deficiencies in the prior art
Hot melt adhesive and preparation method thereof can due to introducing silane segment in chemicals-resistant corrosion damp solidifying polyurethane hot melt adhesive
Further improve the chemicals-resistant corrosivity performance of polyurethane coating.
In order to achieve the above object, the technical side of a kind of chemicals-resistant of the invention corrosion damp solidifying polyurethane hot melt adhesive
Case be achieved in that it is characterized by comprising 1~45 part of polyether Glycols, 1~30 part of liquid polyesters dihydric alcohol, 1~
30 parts of crystalline polyester dihydric alcohol, 1~45 part of poly-organosilicon acrylate copolymer, 1~40 part of isocyanates, 0.01
~1 part of catalyst, 0.01~1 part of antioxidant and 0.1~1 part of silane coupling agent, are mass fraction above；It is described poly-
Organic silicon acrylic ester co-polymer chemical structure is: it is poly- (methacryloxypropyl list block dimethyl polysiloxane-it is random-
Methyl methacrylate-is random-and acrylic acid-2-ethyl caproite-is random-hydroxy-ethyl acrylate) i.e. P(MAPDMS-r-MMA-r-
EHA-r-HEA), the number-average molecular weight of poly-organosilicon acrylate copolymer is 1000~50000.
In the technical scheme, the polyether Glycols are polyoxypropyleneglycol of the number-average molecular weight 500~4000
One or two kinds of any combination of PPG and polytetrahydrofuran ether glycol PTMG；
The liquid polyesters dihydric alcohol be number-average molecular weight 200~2000 polyethylene glycol adipate glycol PEA, gather oneself two
Acid -1,6- hexylene glycol esterdiol PHA and any group of polyadipate -1,4-butanediol esterdiol PEHA one or more
It closes；
The crystalline polyester dihydric alcohol is to win wound Degussa model 7320, and model 7360 and model 7380 are one or more kinds of
Any combination；
The isocyanates is modified diphenylmethane -4,4 '-diisocyanate Desmodur CD-C(MDI performed polymer)；
The catalyst is one or more kinds of any groups of triethanolamine, 2,2- dimorpholine base Anaesthetie Ether and phosphoric acid
It closes；
The antioxidant is one or both of 168 and 1010 any combination；
The silane coupling agent is anilinomethyl triethoxysilane ND-42.
In order to achieve the above object, a kind of chemicals-resistant of the invention corrodes damp solidifying polyurethane hot melt adhesive preparation method
Technical solution be achieved in that it is characterized in that preparation step is as follows:
Step 1 synthesizes poly-organosilicon acrylate copolymer
1~20 part of methacryloxypropyl list is blocked into dimethyl polysiloxane MAPDMS, 1~40 part of methacrylic acid
Methyl esters MMA, 1~40 part of acrylic acid-2-ethyl caproite EHA and 1~5 part of hydroxy-ethyl acrylate HEA are dissolved in 50~100 parts
In toluene, 40~110 DEG C are controlled in, under nitrogen protection, 0.1~2 part of thermal initiator peroxidating 2 ethyl hexanoic acid uncle is added
Pentyl ester polymerization reaction 2~50 hours, after rotary evaporation removes toluene, obtains poly-organosilicon acrylate copolymer, poly-organosilicon
The number-average molecular weight of acrylate copolymer is 1000~50000；Methacryloxypropyl list blocks dimethyl polysiloxane
MAPDMS number-average molecular weight is 1000；
Step 2 synthesizes chemicals-resistant and corrodes damp solidifying polyurethane hot melt adhesive
By 1~45 part of polyether Glycols, 1~30 part of liquid polyesters dihydric alcohol, 1~30 part of crystalline polyester dihydric alcohol, 1
After~45 parts of poly-organosilicon acrylate copolymer, 0.01~1 part of catalyst and the mixing of 0.01~1 part of antioxidant, add
Heat vacuumizes water removal about 1~3 hour in 120~150 DEG C, until the water content of mixture is lower than 280ppm, cooling in 70~
100 DEG C, under nitrogen protection, 1~40 part of isocyanates is added, carries out polymerization reaction 1~10 hour, sampling analysis polymerization produces
Object NCO% content reaches 1%~3%, and viscosity reaches 3000~15000 mPa.s at 100 DEG C, and 0.1~1 part silane coupled is added
Agent obtains chemicals-resistant and corrodes damp solidifying polyurethane hot melt adhesive, is above mass fraction.
In the technical scheme, with Brookfield DV-C digital viscometer viscosity, test setting temperature is 100
℃。
Compared with prior art, the present invention have following advantages and effects
1, the present invention solves traditional insufficient defect of reaction type polyurethane hot-melt adhesive chemicals-resistant corrosive nature, poly-organosilicon third
Olefin(e) acid ester copolymer is that a kind of organic silicon monomer, acrylic ester monomer and hydroxy acryl acid function monomer are copolymerized.Have
Machine silicon monomer can promote the chemicals-resistant corrosive nature of hot melt adhesive.Acrylic ester monomer can promote hot melt adhesive tack.Containing hydroxyl
Base functional acrylic monomer can be by the subparticipation of poly-organosilicon acrylate copolymer to base polyurethane prepolymer for use as synthetic reaction, efficiently
Synergistic effect, shows preferable compatibility, and the other raw material compositions of a successive step of going forward side by side and content improve chemicals-resistant corrosivity
Energy and adhesive force.
2, thickening resin acrylic copolymer random polycondensation is introduced base polyurethane prepolymer for use as by the present invention, improves thickening resin
With the compatibility of polyurethane, reaction type polyurethane hot-melt adhesive chemical resistance deficiency is further solved the problems, such as；
3, the present invention solves the problems, such as that traditional reaction type polyurethane hot-melt adhesive is poor to substrate wet performance, improves hot melt adhesive and applies
The flow leveling of glue, packaging and Process of Applying Glue are not likely to produce bubble.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, and embodiments of the present invention are not limited thereto.
Number involved in following embodiment is mass fraction.
Embodiment one
It is a kind of chemicals-resistant corrosion damp solidifying polyurethane hot melt adhesive, is prepared by the following steps to obtain:
Step 1 synthesizes poly-organosilicon acrylate copolymer
9 parts of methacryloxypropyl list is blocked into dimethyl polysiloxane MAPDMS, 15 parts of methyl methacrylate
MMA, 20 parts of acrylic acid-2-ethyl caproite EHA and 2 parts of hydroxy-ethyl acrylate HEA are dissolved in 50 parts of toluene, are controlled in
80 DEG C, under nitrogen protection, 1.8 parts of thermal initiator peroxidating 2 ethyl hexanoic acid tert-pentyl ester is added, polymerization reaction 40 hours, revolves
After turning evaporation removing toluene, poly-organosilicon acrylate copolymer, the equal molecule of the number of poly-organosilicon acrylate copolymer are obtained
Amount is 18000, and chemical structure is: it is poly- (methacryloxypropyl list block dimethyl polysiloxane-it is random-metering system
Sour methyl esters-is random-and acrylic acid-2-ethyl caproite-is random-hydroxy-ethyl acrylate) i.e. P(MAPDMS-r-MMA-r-EHA-r-
HEA)；Methacryloxypropyl list block dimethyl polysiloxane MAPDMS number-average molecular weight be 1000, No. CAS:
146632-07-7；
Step 2 synthesizes chemicals-resistant and corrodes damp solidifying polyurethane hot melt adhesive
By 15 parts of polyoxypropyleneglycol PPG, 20 parts of polyethylene glycol adipate glycol PEA, 20 parts of crystalline polyester
Poly-organosilicon acrylate copolymer that 7320,15 parts of dihydric alcohol the step of one synthesize, 0.05 part of phosphoric acid and 0.04 part it is anti-
After oxygen agent 168 mixes, 150 DEG C are calorified, vacuumizes water removal 1 hour, until the water content of mixture is lower than 280ppm, cooling
In 70 DEG C, under nitrogen protection, 20 parts of 4,4 '-diisocyanate Desmodur CD-C(MDI of modified diphenylmethane-is added
Performed polymer), it carries out polymerization reaction 2 hours, sampling analysis polymerizate NCO% content reaches 2.5%, and viscosity reaches 4900
MPa.s, 0.5 part of silane coupling agent ND-42 is added, obtains chemicals-resistant and corrodes damp solidifying polyurethane hot melt adhesive, it is above equal
For mass fraction；The number-average molecular weight of polyoxypropyleneglycol PPG is 1000, and the number of polyethylene glycol adipate glycol PEA is equal
Molecular weight is 500, measures viscosity at 100 DEG C with Brookfield DV-C Digital Viscometer.
Embodiment two
It is a kind of chemicals-resistant corrosion damp solidifying polyurethane hot melt adhesive, is prepared by the following steps to obtain:
Step 1 synthesizes poly-organosilicon acrylate copolymer
15 parts of methacryloxypropyl list is blocked into dimethyl polysiloxane MAPDMS, 30 parts of methyl methacrylate
MMA, 20 parts of acrylic acid-2-ethyl caproite EHA and 3 parts of hydroxy-ethyl acrylate HEA are dissolved in 90 parts of toluene, are controlled in
90 DEG C, under nitrogen protection, 1.5 parts of thermal initiator peroxidating 2 ethyl hexanoic acid tert-pentyl ester is added, polymerization reaction 30 hours, revolves
After turning evaporation removing toluene, poly-organosilicon acrylate copolymer, the equal molecule of the number of poly-organosilicon acrylate copolymer are obtained
Amount is 27000, and chemical structure is: it is poly- (methacryloxypropyl list block dimethyl polysiloxane-it is random-metering system
Sour methyl esters-is random-and acrylic acid-2-ethyl caproite-is random-hydroxy-ethyl acrylate) i.e. P(MAPDMS-r-MMA-r-EHA-r-
HEA)；Methacryloxypropyl list block dimethyl polysiloxane MAPDMS number-average molecular weight be 1000, No. CAS:
146632-07-7；
Step 2 synthesizes chemicals-resistant and corrodes damp solidifying polyurethane hot melt adhesive
By 35 parts of polytetrahydrofuran ether glycol PTMG, 25 parts of polyadipate -1,6- hexylene glycol esterdiol PHA, 15 parts of knot
7360,16 parts of crystalline polyester dihydric alcohol the step of one synthesize poly-organosilicon acrylate copolymer, 0.3 part of triethanolamine and
After 0.2 part of irgasfos 168 mixing, 140 DEG C are calorified, water removal 2.5 hours is vacuumized, until the water content of mixture is lower than
280ppm cools down in 80 DEG C, under nitrogen protection, 30 parts of 4,4 '-diisocyanate of modified diphenylmethane-is added
Desmodur CD-C(MDI performed polymer), it carries out polymerization reaction 5 hours, sampling analysis polymerizate NCO% content reaches 2.8%,
Viscosity reaches 6600 mPa.s, and 0.5 part of silane coupling agent ND-42 is added, and obtains chemicals-resistant and corrodes damp solidifying polyurethane
Hot melt adhesive is mass fraction above；The number-average molecular weight of polytetrahydrofuran ether glycol PTMG is 2000, polyadipate -1,6-
The number-average molecular weight of hexylene glycol esterdiol PHA is 1000, is measured at 100 DEG C with Brookfield DV-C Digital Viscometer viscous
Degree.
Embodiment three
It is a kind of chemicals-resistant corrosion damp solidifying polyurethane hot melt adhesive, is prepared by the following steps to obtain:
Step 1 synthesizes poly-organosilicon acrylate copolymer
18 parts of methacryloxypropyl list is blocked into dimethyl polysiloxane MAPDMS, 40 parts of methyl methacrylate
MMA, 10 parts of acrylic acid-2-ethyl caproite (EHA) and 4 parts of hydroxy-ethyl acrylate HEA are dissolved in 90 parts of toluene, control
In 95 DEG C, under nitrogen protection, the thermal initiator peroxidating 2 ethyl hexanoic acid tert-pentyl ester of 0.6 part of addition, polymerization reaction 10 hours,
After rotary evaporation removes toluene, poly-organosilicon acrylate copolymer is obtained, the number of poly-organosilicon acrylate copolymer is divided equally
Son amount is 42000, and chemical structure is: it is poly- (methacryloxypropyl list block dimethyl polysiloxane-it is random-metering system
Sour methyl esters-is random-and acrylic acid-2-ethyl caproite-is random-hydroxy-ethyl acrylate) i.e. P(MAPDMS-r-MMA-r-EHA-r-
HEA)；Methacryloxypropyl list block dimethyl polysiloxane MAPDMS number-average molecular weight be 1000, No. CAS:
146632-07-7；
Step 2 synthesizes chemicals-resistant and corrodes damp solidifying polyurethane hot melt adhesive
By 35 parts of polyoxypropyleneglycol PPG, 17 parts of polyethylene glycol adipate glycol PEA, 25 parts of crystalline polyester
Poly-organosilicon acrylate copolymer, 0.2 part of the 2,2- dimorpholine base diethyl of the synthesis of 7360,20 parts of dihydric alcohol the step of one
After ether and the mixing of 0.2 part of antioxidant 1010,150 DEG C are calorified, water removal 3 hours is vacuumized, until the water content of mixture
Lower than 280ppm, cool down in 80 DEG C, under nitrogen protection, 35 parts of 4,4 '-diisocyanate of modified diphenylmethane-is added
Desmodur CD-C(MDI performed polymer), it carries out polymerization reaction 4 hours, sampling analysis polymerizate NCO% content reaches 2.4%,
0.5 part of silane coupling agent ND-42 is added in 8200 mPa.s of viscosity, obtains chemicals-resistant corrosion damp solidifying polyurethane hot melt
Glue is mass fraction above；The number-average molecular weight of polyoxypropyleneglycol PPG is 3000, polyethylene glycol adipate glycol
The number-average molecular weight of PEA is 1500, measures viscosity at 100 DEG C with Brookfield DV-C Digital Viscometer.
Example IV
It is a kind of chemicals-resistant corrosion damp solidifying polyurethane hot melt adhesive, is prepared by the following steps to obtain:
Step 1 synthesizes poly-organosilicon acrylate copolymer
20 parts of methacryloxypropyl list is blocked into dimethyl polysiloxane MAPDMS, 10 parts of methyl methacrylate
MMA, 40 parts of acrylic acid-2-ethyl caproite EHA and 5 parts of hydroxy-ethyl acrylate HEA are dissolved in 100 parts of toluene, control
In 100 DEG C, under nitrogen protection, the thermal initiator peroxidating 2 ethyl hexanoic acid tert-pentyl ester of 0.2 part of addition, polymerization reaction 5 hours,
After rotary evaporation removes toluene, poly-organosilicon acrylate copolymer is obtained, the number of poly-organosilicon acrylate copolymer is divided equally
Son amount is 45000, and chemical structure is: it is poly- (methacryloxypropyl list block dimethyl polysiloxane-it is random-methyl-prop
E pioic acid methyl ester-is random-and acrylic acid-2-ethyl caproite-is random-hydroxy-ethyl acrylate) i.e. P(MAPDMS-r-MMA-r-EHA-r-
HEA)；Methacryloxypropyl list block dimethyl polysiloxane MAPDMS number-average molecular weight be 1000, No. CAS:
146632-07-7；
Step 2 synthesizes chemicals-resistant and corrodes damp solidifying polyurethane hot melt adhesive
By 50 parts of polyoxypropyleneglycol PPG, 20 parts of polyadipate -1,4-butanediol esterdiol PEHA, 25 parts of crystallization
7380,40 parts of type polyester diol the step of one synthesize poly-organosilicon acrylate copolymer, 0.6 part of triethanolamine and
After 0.9 part of irgasfos 168 mixing, 150 DEG C are calorified, water removal 2 hours is vacuumized, until the water content of mixture is lower than
280ppm cools down in 90 DEG C, under nitrogen protection, 40 parts of 4,4 '-diisocyanate of modified diphenylmethane-is added
Desmodur CD-C(MDI performed polymer), it carries out polymerization reaction 3 hours, sampling analysis polymerizate NCO% content reaches 2.3%,
0.5 part of silane coupling agent ND-42 is added in 9600 mPa.s of viscosity, obtains chemicals-resistant corrosion damp solidifying polyurethane hot melt
Glue is mass fraction above；The number-average molecular weight of polyoxypropyleneglycol PPG is 4000, polyadipate -1,4-butanediol ester
The number-average molecular weight of glycol PEHA is 2000, measures viscosity at 100 DEG C with Brookfield DV-C Digital Viscometer.
Performance test
The present invention consolidates the chemicals-resistant corrosion moisture that the four kinds of above embodiments obtain referring to the universal method of current hot melt adhesive
Change polyurethane hot melt carry out melt viscosity, the open hour, shore hardness, elongation at break, shear strength and with resistance to acidity of oil
It can index test.Melt viscosity is tested referring to HG/T3660-1999 standard, selects No. 27 rotors, is arranged 100 DEG C.It is open
Time is tested referring to ASTM D4497-1994 (2004) method.Shore hardness is surveyed referring to GB-T2411-2008 standard
Examination.Elongation at break is tested referring to GB/T30776-2014 standard.Shear strength is carried out referring to GB/T7124-2004 standard
Test.The specific test method of chemical resistance index is to prepare sample with reference to test shear strength method, and it is small that sample places 72
When solidification after, sample is soaked in oleic acid (purity 98%) solution 24 hours, takes out sample, is placed in 85 DEG C and 85% relatively wet
It spends under environment, after carrying out aging 1000 hours, then carries out shear strength test.Water contact angle is marked with reference to GB/T 30693-2014
Standard is tested.All test data comparative situations are see the following table 1.
Each embodiment specific performance of table 1 tests control case
It can be seen that the chemicals-resistant that the present invention synthesizes from the data of table 1 and corrode damp solidifying polyurethane hot melt adhesive with excellent
Chemicals-resistant corrosive nature and waterproof performance.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (3)
1. a kind of chemicals-resistant corrodes damp solidifying polyurethane hot melt adhesive, it is characterised in that including 1~45 part of polyether Glycols,
1~30 part of liquid polyesters dihydric alcohol, 1~30 part of crystalline polyester dihydric alcohol, 1~45 part of poly-organosilicon acrylate are total
Polymers, 1~40 part of isocyanates, 0.01~1 part of catalyst, 0.01~1 part of antioxidant and 0.1~1 part of silane are even
Join agent, is above mass fraction；The poly-organosilicon acrylate copolymer chemical structure is: poly- (methacryloxypropyl third
Base list block dimethyl polysiloxane-it is random-methyl methacrylate-is random-acrylic acid-2-ethyl caproite-is random-acrylic acid
Hydroxyl ethyl ester) i.e. P(MAPDMS-r-MMA-r-EHA-r-HEA), the number-average molecular weight of poly-organosilicon acrylate copolymer is 1000
~50000.
2. chemicals-resistant according to claim 1 corrodes damp solidifying polyurethane hot melt adhesive, it is characterised in that:
The polyether Glycols are polyoxypropyleneglycol PPG or polytetrahydrofuran ether two of the number-average molecular weight 500~4000
One or two kinds of any combination of alcohol PTMG；
The liquid polyesters dihydric alcohol be number-average molecular weight 200~2000 polyethylene glycol adipate glycol PEA, gather oneself two
Acid -1,6- hexylene glycol esterdiol PHA and any group of polyadipate -1,4-butanediol esterdiol PEHA one or more
It closes；
The crystalline polyester dihydric alcohol is to win 7380 one or more of wound Degussa model 7320, model 7360 and model
Any combination；
The isocyanates is modified diphenylmethane -4,4 '-diisocyanate Desmodur CD-C(MDI performed polymer)；
The catalyst is one or more kinds of any groups of triethanolamine, 2,2- dimorpholine base Anaesthetie Ether and phosphoric acid
It closes；
The antioxidant is one or both of 168 and 1010 any combination；
The silane coupling agent is anilinomethyl triethoxysilane ND-42.
3. a kind of chemicals-resistant corrodes damp solidifying polyurethane hot melt adhesive preparation method, it is characterised in that preparation step is as follows:
Step 1 synthesizes poly-organosilicon acrylate copolymer
1~20 part of methacryloxypropyl list is blocked into dimethyl polysiloxane MAPDMS, 1~40 part of methacrylic acid
Methyl esters MMA, 1~40 part of acrylic acid-2-ethyl caproite EHA and 1~5 part of hydroxy-ethyl acrylate HEA are dissolved in 50~100 parts
In toluene, 40~110 DEG C are controlled in, under nitrogen protection, 0.1~2 part of thermal initiator peroxidating 2 ethyl hexanoic acid uncle is added
Pentyl ester polymerization reaction 2~50 hours, after rotary evaporation removes toluene, obtains poly-organosilicon acrylate copolymer, poly-organosilicon
The number-average molecular weight of acrylate copolymer is 1000~50000；Methacryloxypropyl list blocks dimethyl polysiloxane
MAPDMS number-average molecular weight is 1000；
Step 2 synthesizes chemicals-resistant and corrodes damp solidifying polyurethane hot melt adhesive
By 1~45 part of polyether Glycols, 1~30 part of liquid polyesters dihydric alcohol, 1~30 part of crystalline polyester dihydric alcohol, 1
After~45 parts of poly-organosilicon acrylate copolymer, 0.01~1 part of catalyst and the mixing of 0.01~1 part of antioxidant, add
Heat vacuumizes water removal about 1~3 hour in 120~150 DEG C, until the water content of mixture is lower than 280ppm, cooling in 70~
100 DEG C, under nitrogen protection, 1~40 part of isocyanates is added, carries out polymerization reaction 1~10 hour, sampling analysis polymerization produces
Object NCO% content reaches 1%~3%, and viscosity reaches 3000~15000 mPa.s at 100 DEG C, and 0.1~1 part silane coupled is added
Agent obtains chemicals-resistant and corrodes damp solidifying polyurethane hot melt adhesive, is above mass fraction.
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| CN112708387A (en) * | 2020-12-25 | 2021-04-27 | 烟台德邦科技股份有限公司 | PFPE modified polyurethane single-component hot melt adhesive and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901942A (en) * | 2003-12-30 | 2007-01-24 | 庄臣及庄臣视力保护公司 | Antimicrobial contact lenses and methods for their production |
| CN104245769A (en) * | 2012-04-12 | 2014-12-24 | Dic株式会社 | Moisture-curable polyurethane hot melt resin composition, adhesive and article |
-
2018
- 2018-12-04 CN CN201811474053.1A patent/CN109536116A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1901942A (en) * | 2003-12-30 | 2007-01-24 | 庄臣及庄臣视力保护公司 | Antimicrobial contact lenses and methods for their production |
| CN104245769A (en) * | 2012-04-12 | 2014-12-24 | Dic株式会社 | Moisture-curable polyurethane hot melt resin composition, adhesive and article |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112708387A (en) * | 2020-12-25 | 2021-04-27 | 烟台德邦科技股份有限公司 | PFPE modified polyurethane single-component hot melt adhesive and preparation method thereof |
| CN112708387B (en) * | 2020-12-25 | 2022-10-21 | 烟台德邦科技股份有限公司 | PFPE modified polyurethane single-component hot melt adhesive and preparation method thereof |
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