A kind of production method of flame-retardant and heat-conducting solvent-free polyurethane synthetic leather

A technology of solvent-free polyurethane and production method, applied in the direction of polyurea/polyurethane coatings, coatings, textiles and papermaking, etc., can solve the problems of DMF residue, human harm, easy volatilization, etc., and achieve good flame retardant effect and good flame retardant effect. performance, good flame retardancy

Active Publication Date: 2019-02-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These organic solvents are extremely volatile during the production process, seriously pollute the environment, and pose a threat to the health of on-site operators
[0005] According to the above-mentioned solvent-based production system of polyurethane synthetic leather, the production process has serious environmental pollution problems such as MDF, TOL, MEK, THF and other solvents. It is a non-clean production process and has great harm to the human body.
DMF residues are prone to cause product safety problems in the resulting polyurethane synthetic leather

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for producing flame-retardant and heat-conducting solvent-free polyurethane synthetic leather, comprising the following steps:

[0041] (1) Put component A containing hydroxyl group (-OH) and component B containing isocyanate group (-NCO) into the reactor according to a certain proportion, and fully mix and react for 10 minutes at 25°C and 120rpm , to obtain a fine foam foam slurry.

[0042] The A component is prepared by the following method: in parts by mass, 60 parts of polycaprolactone diol 2000 (abbreviated as PCL, with a relative molecular mass of 2000), 3 parts of dibromoneopentyl glycol (abbreviated as DBNPG) , 5 parts of tribromoneopentyl glycol (abbreviated as TBNPA), 4 parts of resorcinol bis(diphenyl phosphate) (referred to as RDP), 4 parts of Span 80 (also known as span-80, as an emulsifier, the main components are Sorbitan oleate) 0.2 parts, 1,8-diazabicyclo[5.4.0]undec-7-ene (abbreviated as DBU) 0.03 parts, 1,8-diazabicyclo[5.4 .0] 0.1 part of ...

Embodiment 2

[0051] A method for producing flame-retardant and heat-conducting solvent-free polyurethane synthetic leather, comprising the following steps:

[0052] (1) Put component A containing hydroxyl group (-OH) and component B containing isocyanate group (-NCO) into the reactor according to a certain ratio, and fully mix and react at 30°C and 150rpm for 5 minutes , to obtain a fine foam foam slurry.

[0053] The A component is prepared by the following method: in parts by mass, 65 parts of polycaprolactone diol 2000 (abbreviated as PCL, with a relative molecular mass of 2000), 4 parts of dibromoneopentyl glycol (abbreviated as DBNPG) , 4 parts of tribromoneopentyl glycol (abbreviated as TBNPA), 3 parts of resorcinol bis(diphenyl phosphate) (abbreviated as RDP), Span 80 (also known as span-80, as an emulsifier, the main components are Sorbitan oleate) 0.3 parts, 1,8-diazabicyclo[5.4.0]undec-7-ene (abbreviated as DBU) 0.05 parts, 1,8-diazabicyclo[5.4 .0] 0.07 parts of undec-7-ene for...

Embodiment 3

[0062] A method for producing flame-retardant and heat-conducting solvent-free polyurethane synthetic leather, comprising the following steps:

[0063] (1) Put component A containing hydroxyl group (-OH) and component B containing isocyanate group (-NCO) into the reactor according to a certain ratio, and fully mix and react at 35°C and 130rpm for 8 minutes , to obtain a fine foam foam slurry.

[0064] The A component is prepared by the following method: in parts by mass, 70 parts of polycaprolactone diol 2000 (abbreviated as PCL, with a relative molecular mass of 2000), 5 parts of dibromoneopentyl glycol (abbreviated as DBNPG) , 3 parts of tribromoneopentyl glycol (abbreviated as TBNPA), 3 parts of resorcinol bis(diphenyl phosphate) (referred to as RDP), 3 parts of Span 80 (also known as span-80, as an emulsifier, the main components are Sorbitan oleate) 0.4 parts, 1,8-diazabicyclo[5.4.0]undec-7-ene (abbreviated as DBU) 0.08 parts, 1,8-diazabicyclo[5.4 .0] 0.06 parts of unde...

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Abstract

The invention discloses a production method of flame-retardant heat conduction type solvent-free polyurethane synthetic leather. An A component including hydroxyl and a B component including isocyanate groups are added into a reaction kettle, and foaming slurry is acquired after reaction under stirring; a synthetic leather dried production line is used, the foaming slurry is coated on release paper to form coating, then the coating is fit with base fabric in a clearance fitting manner via a fitting machine and then put into an oven for curing and peeled after cooling, and thus the flame-retardant heat conduction type solvent-free polyurethane synthetic leather is acquired. According to the production method provided by the invention, a dual foaming technology, a high heat conduction and insulating composite powder heat conduction technology, a polyurethane in situ polymerization self-flame-retardant technology, a thermal sensitivity catalyst asynchronous catalysis technology and a single-pole constant temperature thermal coating technology to produce the flame-retardant heat conduction type solvent-free polyurethane synthetic leather; the production technology is environment-friendly, compact and stable, product quality is good, flame-retardant performance can achieve a US automobile material FMVSS3O2 flame-retardant test standard, and a heat conduction coefficient can reach 1.38W / mK.

Description

technical field [0001] The invention relates to the technical field of polyurethane synthetic leather, in particular to a method for producing flame-retardant and heat-conductive solvent-free polyurethane synthetic leather. Background technique [0002] Polyurethane synthetic leather is a composite material that simulates the structure and performance of natural leather and can be used as a substitute for natural leather. Usually non-woven fabric is used to simulate the mesh layer, and microporous polyurethane coating is used to simulate the grain layer. The front and back of the obtained synthetic leather are very similar to leather, and have a certain degree of air permeability, which is closer to natural leather than ordinary artificial leather. Widely used in making shoes, boots, bags and ball games. [0003] In terms of output, the output of plastic artificial synthetic leather in my country increased from 1.8482 million tons in 2009 to 3.438 million tons in 2015, with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14C08G18/42C08G18/66C08G18/76
CPCC08G18/4277C08G18/6662C08G18/7657C08G18/7671C08K3/14C08K3/22C08K3/34C08K3/38C08K2003/2227C08K2003/2296C08K2201/011C09D175/06D06N3/0043D06N3/0095D06N3/146
Inventor 马兴元张铭芮段月丁博刘帅赵昭
Owner SHAANXI UNIV OF SCI & TECH
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