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Flame-retardant polyurethane gel prepolymer and preparation method thereof

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

Inactive Publication Date: 2017-06-09
SHENZHEN LIXIN LUNAN RUBBER & PLASTIC HARDWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention proposes a flame-retardant polyurethane prepolymer, which solves the problem that the prepolymer of the prior art does not have good viscosity, strong adhesion, good elasticity, stable surface hardness, environmental protection, durability, and resistance to corrosion. Combustible, anti-static, not easy to age, no chipping, easy to clean, oil-resistant, wear-resistant and solvent-resistant.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A flame-retardant polyurethane prepolymer 1, said flame-retardant polyurethane prepolymer 1 includes the following components in parts by weight: 20 parts of polyol 1000; 30 parts of polyol 2000; 15 parts 6 parts of toluene diisocyanate; 6 parts of flame retardant; 2 parts of vulcanizing agent and 7 parts of plasticizer.

[0027] The preparation method of flame-retardant polyurethane prepolymer 1 comprises the following steps:

[0028] 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;

[0029] Step 2, add the weighed polyol 2000 into the reaction kettle at a constant temperature of 60°C and stir for 25 minutes;

[0030] Step 3, add weighed toluene diisocyanate, then heat up to 75°C and stir for 1 hour;

[0031] Step 4, finally lower the temperature to 60°C, then add the weighed flame retardant, vulcanizing agent and plasticizer and stir for 0.4 hours, then raise the temperature to 75°C...

Embodiment 2

[0034] A flame-retardant polyurethane prepolymer 2, said flame-retardant polyurethane prepolymer 2 includes the following components in parts by weight: 25 parts of polyol 1000; 35 parts of polyol 2000; 20 parts 8 parts of toluene diisocyanate; 8 parts of flame retardant; 3 parts of vulcanizing agent and 9 parts of plasticizer.

[0035] The preparation method of flame-retardant polyurethane prepolymer 2 comprises the following steps:

[0036] 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;

[0037] Step 2, then add the weighed polyol 2000 into the reaction kettle at a constant temperature of 60°C and stir for 30 minutes;

[0038] Step 3, add weighed toluene diisocyanate, then heat up to 80°C and stir for 1.5 hours;

[0039] 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 hours, then raise the te...

Embodiment 3

[0042] A flame-retardant polyurethane prepolymer 3, said flame-retardant polyurethane prepolymer 3 includes the following components in parts by weight: 30 parts of polyol 1000; 40 parts of polyol 2000; 25 parts 10 parts of toluene diisocyanate; 10 parts of flame retardant; 4 parts of vulcanizing agent and 12 parts of plasticizer.

[0043] The preparation method of flame-retardant polyurethane prepolymer comprises the following steps:

[0044] 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;

[0045] Step 2, add the weighed polyol 2000 into the reaction kettle at a constant temperature of 60°C and stir for 35 minutes;

[0046] Step 3, then add the weighed toluene diisocyanate, then raise the temperature to 85°C and stir for 2 hours;

[0047] Step 4, finally lower the temperature to 70°C, then add the weighed flame retardant, vulcanizing agent and plasticizer and stir for 0.6 hours, then rais...

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Abstract

The invention provides a flame-retardant polyurethane gel prepolymer which comprises, by weight, 20-30 parts of polyhydric alcohols 1000, 30-40 parts of polyhydric alcohols 2000, 15-25 parts of toluene diisocyanate, 6-10 parts of flame retardants, 2-4 parts of vulcanizing agents and 7-12 parts of plasticizers. The flame-retardant polyurethane gel prepolymer does not contain any toxic and harmful substances and other filled materials and is a novel water-tolerant and oil-retardant environment-friendly flame-retardant material, and the hardness of the prepolymer ranges from 0A to 98A. The prepolymer has the advantages that the prepolymer is good in surface viscosity and elasticity, high in adhesion force, stable in surface hardness, environmentally friendly, durable, retardant in flame, oil, abrasion and solvent corrosion, anti-static and easy to clean and does not easily ages and falls scraps, the performance of the prepolymer cannot reduce when the prepolymer is used for a long time and the like. The prepolymer is used for producing mobile phone charging test devices, anti-aging detection devices, automotive parts and components, fireproofing doors and windows, charging piles, battery tanks and medical facilities and the like. The invention further provides a preparation method of the flame-retardant polyurethane gel prepolymer. The preparation method is simple, practicable and good in stability.

Description

technical field [0001] The invention relates to a flame-retardant polyurethane prepolymer and a preparation method thereof. Background technique [0002] 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, stable surface hardness, environmental protection, durability, flame retardant, anti-static, not easy to age, no chips, easy to clean, oil resistance, wear resistance and solvent corrosion resistance and other characteristics. Contents of the invention [0003] The invention propos...

Claims

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Application Information

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