Flame-retardant polyurethane elastomer and preparation method thereof

A technology of superior glue and polyurethane, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., to achieve the effect of good surface adhesion, no performance degradation, and strong adhesion

Inactive Publication Date: 2020-11-20
SHENZHEN LIXIN LUNAN RUBBER & PLASTIC HARDWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a kind of flame-retardant polyurethane Uril glue, which solves the problem that the Uril adhesive prepolymer in the prior art does not have good viscosity, strong adhesion, good elasticity, stable surface hardness, environmental protection, durability, flame retardancy, and anti-corrosion. Defects in static electricity, not easy to age, no chipping, easy to clean, oil resistance, wear resistance and solvent corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Provide a kind of flame retardant polyurethane prepolymer (example 1), described flame retardant polyurethane prepolymer (example 1) comprises each component of following parts by weight: polyol 1000 of 20 parts; 30 2000 parts of polyol; 15 parts of toluene diisocyanate; 6 parts of flame retardant; 2 parts of vulcanizing agent and 7 parts of plasticizer.

[0029] The preparation method of flame-retardant polyurethane prepolymer (example 1) may further comprise the steps:

[0030] Step 1, first add the weighed polyol 1000 into the reactor and heat it to 40°C, and then raise the temperature to 55°C in two stages;

[0031] Step 2, add the weighed polyol 2000 into the reaction kettle at a constant temperature of 60°C and stir for 25 minutes;

[0032] Step 3, add weighed toluene diisocyanate, then heat up to 75°C and stir for 1 hour;

[0033] Step 4, finally lower the temperature to 60°C, then add the weighed flame retardant, vulcanizing agent and plasticizer to stir and r...

Embodiment 2

[0036] A flame-retardant polyurethane prepolymer (example 2), said flame-retardant polyurethane prepolymer (example 2) includes each component of the following parts by weight: 25 parts of polyol 1000; 35 parts 2000 polyol; 20 parts of toluene diisocyanate; 8 parts of flame retardant; 3 parts of vulcanizing agent and 9 parts of plasticizer.

[0037] The preparation method of flame-retardant polyurethane prepolymer (example 2) comprises the following steps:

[0038] Step 1, first add the weighed polyol 1000 into the reactor and heat it to 45°C, and then raise the temperature to 60°C in two stages;

[0039] Step 2, then add the weighed polyol 2000 into the reaction kettle at a constant temperature of 60°C and stir for 30 minutes;

[0040] Step 3, add weighed toluene diisocyanate, then heat up to 80°C and stir for 1.5 hours;

[0041]Step 4, finally lower the temperature to 65°C, then add the weighed flame retardant, vulcanizing agent and plasticizer to stir and react for 0.5 ho...

Embodiment 3

[0044] A flame-retardant polyurethane prepolymer (example 3), said flame-retardant polyurethane prepolymer (example 3) includes each component of the following parts by weight: 30 parts of polyol 1000; 40 parts 2000 polyol; 25 parts of toluene diisocyanate; 10 parts of flame retardant; 4 parts of vulcanizing agent and 12 parts of plasticizer.

[0045] The preparation method of flame-retardant polyurethane prepolymer (example 3) comprises the following steps:

[0046] Step 1, first add the weighed polyol 1000 into the reactor and heat it to 50°C, and then raise the temperature to 65°C in two stages;

[0047] Step 2, add the weighed polyol 2000 into the reaction kettle at a constant temperature of 60°C and stir for 35 minutes;

[0048] Step 3, then add the weighed toluene diisocyanate, then raise the temperature to 85°C and stir for 2 hours;

[0049] Step 4, finally lower the temperature to 70°C, then add the weighed flame retardant, vulcanizing agent and plasticizer to stir a...

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Abstract

The invention provides a flame-retardant polyurethane elastomer. A flame-retardant polyurethane elastomer prepolymer comprises the following components in parts by weight: 20-30 parts of polyol 1000,30 to 40 parts of a polyol 2000; 15 to 25 parts of toluene diisocynate; 6 to 10 parts of a flame retardant; 2-4 parts of a vulcanizing agent and 7-12 parts of a plasticizer. The flame-retardant polyurethane elastomer disclosed by the invention does not contain any toxic and harmful substances and other filling materials, is a water-resistant and oil-resistant environment-friendly flame-retardant new material, has a hardness range of 0A-98A, and has the advantages of good surface viscosity, strong adhesive force, good elasticity, stable surface hardness, environmental protection, durability, flame retardance, static prevention, difficult aging, no chip falling, easy cleaning, oil resistance, wear resistance and solvent corrosion resistance. The use performance is not reduced after long timeusing. The flame-retardant polyurethane elastomer is used for producing products such as mobile phone charging test equipment, anti-aging detection equipment, automobile parts, fireproof doors and windows, charging piles, battery filling and medical equipment. The invention further provides a preparation method of the flame-retardant polyurethane elastomer. The preparation method is simple and easy to implement and good in stability.

Description

[0001] The present invention is a divisional application based on the application number 201710030205.8, the application date 2017.01.17, and the invention title is "a flame-retardant polyurethane prepolymer and its preparation method". technical field [0002] The invention relates to the technical field of unglue, in particular to flame-retardant polyurethane unglue and a preparation method thereof. Background technique [0003] Uniglue, also known as polyurethane PU elastomer, is a kind of rubber with good strength and small compression deformation. A new type of material between plastic and rubber, which has the rigidity of plastic and the elasticity of rubber. It is currently widely used to replace rubber. The preparation process of the unglue in the prior art is complicated and the stability is weak. The unglue prepolymer in the prior art cannot obtain the unglue by simply adding a curing agent, and does not have good viscosity, strong adhesion, Good elasticity, stab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/12C08G18/66C08G18/48C08G18/32C08K5/521C09J175/08
CPCC08G18/12C08G18/4808C08G18/6685C08K5/521C09J175/08C08G18/3814
Inventor 向欢
Owner SHENZHEN LIXIN LUNAN RUBBER & PLASTIC HARDWARE
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