Branched-structure polyurethane-silicious polyacrylate hot melt adhesive and preparation method thereof

A technology of polyacrylate and branched structure, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of high melting temperature, low strength, poor weather resistance of hot melt adhesives, etc., and achieve wet Effects of low gas sensitivity, good storage stability, and low melting temperature

Inactive Publication Date: 2013-02-06
SICHUAN UNIV
View PDF9 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the series of problems in the preparation of hot melt adhesives in the prior art, the present invention aims to provide a branched structure polyurethane-silicon-containing polyacrylate interpenetrating network hot melt adhesive and its preparation by using branched synthesis technology, interpenetrating network technology, etc. method to solve the problem of poor heat resistance and low strength of traditional EVA hot melt adhesives, high energy consumption, high melting temperature and poor construction performance of polyester hot melt adhesives, and poor weather resistance, poor storage stability and cost of current moisture-cured polyurethane hot melt adhesives. Higher Series Major Issues

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Branched-structure polyurethane-silicious polyacrylate hot melt adhesive and preparation method thereof
  • Branched-structure polyurethane-silicious polyacrylate hot melt adhesive and preparation method thereof
  • Branched-structure polyurethane-silicious polyacrylate hot melt adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Preparation of branched structure polyurethane-silicon-containing polyacrylate resin:

[0033] Add 17.2g of dimethylolbutyric acid and 120g of polycarbonate diol (Mn=3000) into a reactor equipped with a stirring and temperature control device, heat up to 50°C for melting and mixing, add 65g of dicyclohexylmethane diisocyanate, At the same time, 100g of n-butyl acrylate was added, and the temperature was controlled to 88°C for 95 minutes to obtain a polyurethane prepolymer with hydrophilic groups; 4g of trimethylolpropane and 5g of methyl ethyl ketone oxime were added, and the temperature was controlled to 85°C to continue the reaction for 150 minutes to obtain branched Chemical structure end-capped polyurethane prepolymer; add 11g triethylamine, add 500g deionized water to emulsify for 40min under high-speed stirring, then add 0.3g ammonium persulfate initiator, heat up to 80°C and react for 70min; dropwise add 10g vinyl three Ethoxysilane and 35g methyl methacrylate...

Embodiment 2

[0042] 1. Preparation of branched structure polyurethane-silicon-containing polyacrylate resin:

[0043] Add 18.2g of dimethylolbutyric acid and 130g of polytetrahydrofuran diol (Mn=2900) into a reaction kettle equipped with a stirring and temperature control device, heat up to 50°C for melting and mixing, add 70g of dicyclohexylmethane diisocyanate, and simultaneously Add 80g of n-butyl acrylate, control the temperature to 85°C and react for 120min to obtain a polyurethane prepolymer with hydrophilic groups; add 4.5g of trimethylolpropane and 5.6g of methyl ethyl ketone oxime, control the temperature to 85°C and continue to react for 120min to obtain Polyurethane prepolymer end-capped with branched structure; add 12g of triethylamine, add 500g of deionized water to emulsify for 50min under high-speed stirring, then add 0.4g of ammonium persulfate initiator, heat up to 82°C for 70min; add 10g of vinyl Triethoxysilane and 50 g of methyl acrylate continued to react for 150 min, ...

Embodiment 3

[0052] 1. Preparation of branched structure polyurethane-silicon-containing polyacrylate resin:

[0053]Add 18g of dimethylolpropionic acid and 130g of polytetrahydrofuran diol (Mn=2900) into a reaction kettle equipped with a stirring and temperature control device, heat up to 45°C for melting and mixing, add 90g of isophorone diisocyanate, and simultaneously add 95g of ethyl acrylate, temperature controlled to 88°C and reacted for 100min to obtain a polyurethane prepolymer with hydrophilic groups; add 7.5g of trimethylolpropane and 4.8g of methyl ethyl ketone oxime, temperature controlled to 75°C and continue to react for 170min to obtain branched Structure-terminated polyurethane prepolymer; add 11g of triethylamine, add 750g of deionized water to emulsify for 55min under high-speed stirring, then add 1.5g of ammonium persulfate initiator, raise the temperature to 77°C for 80min; add dropwise 12g of vinyl trimethoxy base silane and 50g methyl methacrylate, continue to react ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
softening pointaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a branched-structure polyurethane-silicious polyacrylate hot melt adhesive and a preparation method thereof. The branched-structure polyurethane-silicious polyacrylate hot melt adhesive mainly comprises the following components of branched-structure polyurethane-silicious polyacrylate resin, tackifier, fillers, wax additive, light stabilizer and antioxidant, wherein the branched-structure polyurethane-silicious polyacrylate resin is a polymer specially synthesized for the invention. The preparation method of the branched-structure polyurethane-silicious polyacrylate hot melt adhesive comprises the following steps of: heating and melting the antioxidant, the light stabilizer, the tackifier and the wax additive according to weight ratio of the hot melt adhesive, controlling temperature, adding the branched-structure polyurethane-silicious polyacrylate resin and the fillers in batches while stirring, discharging after melting and uniformly mixing adhesive solution, cooling, slicing and forming to obtain the prepared hot melt adhesive. According to the branched-structure polyurethane-silicious polyacrylate hot melt adhesive and the preparation method thereof, the problems of poor heat resistance and low strength of the traditional EVA (ethylene-co-vinyl acetate) hot melt adhesives, high energy consumption for preparation, high melt temperature and poor construction performance of polyester hot melt adhesives, and poor weather resistance, poor storage stability and higher cost of moisture-curing polyurethane hot melt adhesive are solved.

Description

Technical field: [0001] The invention relates to a polyurethane-polyacrylate interpenetrating network hot-melt adhesive, in particular to a branched structure polyurethane-silicon-containing polyacrylate interpenetrating network hot-melt adhesive for metal, furniture and leather products and its preparation. technical background: [0002] Hot-melt adhesive usually refers to an adhesive that is solid at room temperature, heated and melted into a liquid state, coated on the adherend, and then bonded in a short time after pressing and cooling. Compared with water-based adhesives and solvent-based adhesives, its solid content As high as 100%, it has the advantages of safety and non-toxicity, fast bonding, convenient storage and transportation, etc., so it has been widely used and developed rapidly in the past 30 years. In 2002, the global hot-melt adhesive consumption was about 1 million tons, and the European and American markets were about 600,000 tons, accounting for 20% of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C08F283/00C08F230/08C08G18/67C08G18/12
Inventor 辛中印陈政黄美松唐金财董伟
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap