Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of ultrathin polyurethane material

A polyurethane material and an ultra-thin technology, applied in the field of preparation of ultra-thin polyurethane materials, can solve problems such as the inability to ensure sufficient reaction cell distribution of isocyanates, and achieve impact resistance and sealing performance, as well as good resilience, impact resistance and sealing. The effect of good performance and high compression ratio

Active Publication Date: 2016-06-08
HUBEI XIANGYUAN NEW MATERIAL TECH INC
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems existing in the prior art that the sufficient reaction of isocyanate and the distribution of formed cells are sufficiently

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] A method for preparing an ultra-thin polyurethane material, comprising the following steps in sequence:

[0019] Step 1. Put polyether polyol, water, stabilizer, catalyst and chain extender at 40~70°C, 15~ Perform high-precision metering and mixing under 30MPa to obtain the mixture;

[0020] Step 2: First add isocyanate to the mixture and stir at high speed to form reactants, then vacuum defoam the reactants, and then use reactive precision coating technology to prepare ultra-thin polyurethane materials, wherein the amount of isocyanate added The ratio by weight to the polyether polyol in the mixture is 10-40:70-90.

[0021] In the step 1, the mixing time is 10 to 30 minutes;

[0022] In the second step, the stirring speed is greater than or equal to 4000r / min, and the stirring time is 1-5min.

[0023] The polyether polyol is formed by mixing polyether polyol A, polyether polyol B, and polyether polyol C according to the percentage content of 45% to 65%, 10% to 50%, ...

Embodiment 1

[0034] A preparation method of an ultra-thin polyurethane material is carried out in accordance with the following steps:

[0035] Step 1. Mix polyether polyol, water, stabilizer, catalyst, and chain extender at a weight ratio of 70:1:0.7:0.01:10 at 60°C and 20MPa for 20 minutes to obtain a mixture, wherein , the stabilizer is silicone oil, the catalyst is triethylenediamine, and the water is ion-exchanged water;

[0036] Step 2. First add isocyanate to the mixture and stir for 5 minutes at a speed of 4000r / min to form reactants, then vacuum defoam the reactants, and then adopt reactive precision coating technology to prepare ultra-thin polyurethane materials. Among them, The polyether polyol is mixed by polyether polyol A, polyether polyol B, and polyether polyol C according to the percentage content of 45%, 30%, and 25%, respectively, wherein polyether polyol A is SKY- 1030 polyether polyol (hydroxyl value 290-330), polyether polyol B is (hydroxyl value 25-29) POP3628 polye...

Embodiment 2

[0038] Step is with embodiment 1, and difference is:

[0039] In the first step, the weight ratio of polyether polyol, water, stabilizer, catalyst, and chain extender is 90:5:2:0.05:20, the mixing temperature is 70°C, the pressure is 30MPa, and the mixing time is 10min , the catalyst is dibutyltin dilaurate;

[0040] In said step 2, the stirring speed is 5000r / min, the stirring time is 1min, the percentage content of polyether polyol A, polyether polyol B, polyether polyol C is 65%, 10%, 25% respectively, isocyanate The weight ratio of the addition amount of the polyether polyol in the mixing material is 40:90.

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
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of an ultrathin polyurethane material. The preparation method comprises the steps that polyether polyol, water, a stabilizer, a catalyst and a chain extender in the weight ratio being (70-90):(1-5):(0.7-2.0):(0.01-0.05):(10-20) are mixed in a high precision measurement manner at the temperature of 40-70 DEG C and the pressure of 15-30 MPa, a mixture is obtained, 10-40 parts of isocyanate is added to the mixture and stirred at a high speed, a reactant is formed and subjected to vacuum defoaming, and then the ultrathin polyurethane material can be prepared with a reaction type precise coating technology. With adoption of the method, the polyurethane material is thinner and has high compression ratio, shock resistance, sealing performance and good resilience, further, sufficient reaction of isocyanate is guaranteed, and formed cells are uniformly distributed.

Description

technical field [0001] The invention belongs to the field of ultra-thin material preparation, and in particular relates to a preparation method of ultra-thin polyurethane material. Background technique [0002] At present, mobile phone products are getting thinner and thinner, and the requirements for impact-resistant materials and sealing materials are getting higher and higher. The foam products in the prior art are generally thicker, and the ideal ultra-thin products in China can only reach 1mm, which meets Can not meet the needs of current technology. [0003] Chinese patent: The application publication number is CN104987702A, and the invention patent application publication date is October 21, 2015, which discloses a polyurethane foam and its preparation method. The polyurethane foam is formed by polymerization of component A and component B. Part A includes isocyanate containing two or more isocyanate groups, and component B includes polyethylene and polyols. When pre...

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
IPC IPC(8): C08G18/76C08G18/48C08J9/08C08G101/00
CPCC08G18/4812C08G18/7671C08G2110/0083
Inventor 郭可锐王诗明安健鑫
Owner HUBEI XIANGYUAN NEW MATERIAL TECH INC