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A kind of polyester modified sponge and preparation method thereof

A polyester modification and sponge technology, applied in the field of sponge, can solve the problems of poor flame composite peel strength of sponge, poor use effect of sponge, excessive labor and other problems, achieve excellent tensile strength and elongation at break, and enhance the strength of polyurethane Combined peel strength with flame, reducing the effect of accidents

Active Publication Date: 2017-10-10
ZHEJIANG CHUANYANG SPONGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the preparation method disclosed in this patent can greatly improve the impact resistance, fatigue resistance and flexibility of the sponge, the flame composite peeling strength of the sponge prepared by the preparation method is poor, and the use effect of the sponge is poor. Too much manual operation, low output, therefore, it is necessary to design a polyester modified sponge and its preparation method

Method used

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  • A kind of polyester modified sponge and preparation method thereof
  • A kind of polyester modified sponge and preparation method thereof
  • A kind of polyester modified sponge and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The preparation method of the polyester modified sponge includes the following steps:

[0053] a. Purchase the required raw materials;

[0054] b. Add polyether polyol and polyester polyol to the stirring device, stir for 10 minutes, and the stirring speed is 200r / min;

[0055] c. Add dimethyl methylphosphonate, triethylenediamine and dibutyltin to the stirring device, stir for 5min, and the stirring speed is 200r / min;

[0056] d. Add the foam stabilizer, foaming agent and water to the stirring device, stir for 10 minutes, and the stirring speed is 200r / min;

[0057] e. Add toluene diisocyanate to the stirring device, stir for 0.5 min, the stirring speed is 100r / min, until the material liquid is milky white;

[0058] f. Spray the material liquid to the mold through a spray gun, let it stand in a water bath at 50℃, foam and solidify, demould after 20h, put it in an oven for drying, the drying temperature is 40℃, and the drying time is 20min, the finished product is obtained.

[005...

Embodiment 2

[0070] The preparation method of the polyester modified sponge includes the following steps:

[0071] a. Purchase the required raw materials;

[0072] b. Add the polyether polyol and polyester polyol to the stirring device, stir for 15 minutes, and the stirring speed is 250r / min;

[0073] c. Add dimethyl methylphosphonate, triethylenediamine and dibutyltin to the stirring device, stir for 8min, and the stirring speed is 250r / min;

[0074] d. Add the foam stabilizer, foaming agent and water to the stirring device, stir for 15 minutes, and the stirring speed is 250r / min;

[0075] e. Add toluene diisocyanate to the stirring device, stir for 1 min, and the stirring speed is 120r / min, until the material liquid is milky white;

[0076] f. Spray the material liquid to the mold through a spray gun, let it stand in a 65℃ water bath, foam and solidify, demould after 22h, put it in an oven for drying, the drying temperature is 50℃, and the drying time is 30min, the finished product is obtained.

[...

Embodiment 3

[0088] The preparation method of the polyester modified sponge includes the following steps:

[0089] a. Purchase the required raw materials;

[0090] b. Add the polyether polyol and polyester polyol to the stirring device, stir for 20 minutes, and the stirring speed is 350r / min;

[0091] c. Add dimethyl methylphosphonate, triethylenediamine and dibutyltin to the stirring device, stir for 10min, and the stirring speed is 300r / min;

[0092] d. Add the foam stabilizer, foaming agent and water to the stirring device, stir for 20 minutes, and the stirring speed is 300r / min;

[0093] e. Add toluene diisocyanate to the stirring device, stir for 3 minutes, the stirring speed is 150r / min, until the material liquid is milky white;

[0094] f. Spray the material liquid to the mold through a spray gun, let it stand in a water bath at 80℃, foam and solidify, demould after 24h, put it in an oven for drying, the drying temperature is 60℃, and the drying time is 40min, the finished product is obtained...

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Abstract

The invention provides a polyester-modified sponge and a preparation method thereof and solves the technical problem that a sponge prepared in the prior art is poor in flame composition stripping strength and use effects, needs too much manual operations and is low in cost. The polyester-modified sponge includes following raw materials, by mass, 60-100 parts of polyether polyol, 60-100 parts of polyester polyol, 40-70 parts of methylbenzene diisocyanate, 3-8 parts of water, 3-5 parts of triethylene diamine, 3-5 parts of dibutyl tin, 5-8 parts of dimethyl methylphosphonate, 3-10 parts of a foam stabilizing agent and 5-8 parts of a foaming agent. The invention also provides the preparation method of the sponge. The polyester-modified sponge is good in use performance and the method is high in production efficiency.

Description

Technical field [0001] The invention relates to a sponge, in particular to a polyester modified sponge and a preparation method thereof. Background technique [0002] Sponge is a porous material with good water absorption and can be used to clean things. Commonly used sponges are made of wood cellulose fibers or foamed plastic polymers. In addition, there are also natural sponges made of sponge animals. Most natural sponges are used for body cleaning or painting. In addition, there are three types of synthetic sponges made of other materials, namely low-density polyether, polyvinyl alcohol and polyester. [0003] After searching, for example, Chinese Patent Literature discloses a reinforced sponge and its preparation method [application number: 201310566081.7; announcement number: CN 103641984A]. This reinforced sponge is characterized in that the weight parts of its constituent raw materials are: polytetrahydrofuran ether glycol 85-90, isophorone diisocyanate 50-55, ferrocene 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08K5/5333C08J9/14B29B7/16B29B7/24B29B7/28B29B7/94C08G101/00
CPCB29B7/16B29B7/246B29B7/28B29B7/94C08G18/3228C08G18/4018C08G18/42C08G18/48C08G18/6651C08G18/6685C08G2101/00C08J9/145C08J2203/142C08J2375/06C08J2375/08C08K5/5333
Inventor 孙建明
Owner ZHEJIANG CHUANYANG SPONGE
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