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 s

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example one

[0026] A flame-retardant polyurethane prepolymer 1 comprising the following parts by weight: 20 parts of polyol 1000; 30 parts of polyol 2000; 15 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 includes the following steps:

[0028] Step 1: First add the weighed polyol 1000 into the reactor and heat it to 40°C, then heat it up to 55°C in 2 stages;

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

[0030] Step 3: Add the weighed toluene diisocyanate, and then increase the temperature to 75°C and stir for 1 hour;

[0031] Step 4. Finally, the temperature is lowered to 60°C, and then the weighed flame retardant, vulcanizing agent and plasticizer are added and stirred for 0.4 hours, then the temperature is raised to 75°C and the stirring is continued for...

Example Embodiment

[0033] Example two

[0034] A flame-retardant polyurethane prepolymer 2 comprising the following parts by weight: 25 parts of polyol 1000; 35 parts of polyol 2000; 20 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 Youli glue prepolymer 2 includes the following steps:

[0036] Step one, first add the weighed polyol 1000 into the reactor and heat it to 45°C, then heat it up to 60°C in 2 stages;

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

[0038] Step three, add the weighed toluene diisocyanate, and then increase the temperature 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 and stir for 0.5 hours, then heat to 80°C and continue stirring and react for 2.5 hours to obta...

Example Embodiment

[0041] Example three

[0042] A flame-retardant polyurethane prepolymer 3 comprising the following parts by weight: 30 parts of polyol 1000; 40 parts of polyol 2000; 25 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 Youli glue prepolymer includes the following steps:

[0044] Step one, first add the weighed polyol 1000 into the reactor and heat it to 50°C, then heat it up to 65°C in two stages;

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

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

[0047] Step 4. Finally, the temperature is lowered to 70°C, and then the weighed flame retardant, vulcanizing agent and plasticizer are added and stirred for 0.6 hours, then the temperature is raised to 85°C and the stirrin...

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PUM

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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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