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

A kind of chloroprene rubber modified flame retardant polyurethane sealant and preparation method thereof

A technology of polyurethane sealant and neoprene, which is applied in the field of sealants, can solve the problems of decreased adhesive performance and flame retardant performance, and limited development of flammable properties, and achieves the effect of excellent flame retardant performance and simple preparation method

Active Publication Date: 2020-12-04
GUANGDONG PUSTAR SEALED RAYON CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As an organic composite material, polyurethane sealant is favored by people for its good adhesion and wide application range, but its inherent flammability limits its development
The common flame retardant polyurethane sealants usually achieve the purpose of flame retardant by adding flame retardants. However, when the added flame retardants encounter water, oil, organic solvents and other substances, they are easy to precipitate from the sealant, causing stickiness. Decrease in connection performance and flame retardant performance

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of chloroprene rubber modified flame retardant polyurethane sealant and preparation method thereof
  • A kind of chloroprene rubber modified flame retardant polyurethane sealant and preparation method thereof
  • A kind of chloroprene rubber modified flame retardant polyurethane sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A neoprene modified flame-retardant polyurethane sealant, made of the following components in parts by weight:

[0050]

[0051] Wherein, the polyurethane prepolymer is made of the following components in parts by weight:

[0052]

[0053] Modified chloroprene rubber is made of the following components in parts by weight:

[0054]

[0055]

[0056] The isocyanate is one or a combination of any two or more of toluene diisocyanate, 1,5-naphthalene diisocyanate, diphenylmethane diisocyanate, 1,6-hexamethylene diisocyanate or isophorone diisocyanate.

[0057] Polyether polyol is a mixture of polyether diol and polyether triol; the weight content of the polyether diol is 30% to 90%, and the molecular weight of the polyether diol is 500 to 12000, so The molecular weight of the polyether trihydric alcohol is 1000-10000.

[0058] Neoprene is CR2441 type, which is one of AD, AC, CG, HC or AF or any combination of two or more;

[0059] The initiator is one or any com...

Embodiment 2

[0082] A neoprene modified flame-retardant polyurethane sealant, made of the following components in parts by weight:

[0083]

[0084] Wherein, the polyurethane prepolymer is made of the following components in parts by weight:

[0085]

[0086] Modified chloroprene rubber is made of the following components in parts by weight:

[0087]

[0088] The isocyanate is toluene diisocyanate.

[0089] Polyether polyol is the mixture of polyether glycol and polyether trihydric alcohol; The weight content of polyether glycol is 60%, and the molecular weight of described polyether glycol is 6000, and the molecular weight of polyether trihydric alcohol is 5000.

[0090] The neoprene is CR2441 type, which is AD;

[0091] The initiator is BPO;

[0092] The diluent is toluene.

[0093] Flame retardant diluents are phosphate esters;

[0094] Phosphate esters are triethyl phosphate;

[0095] The flame retardant is ammonium polyphosphate;

[0096] The filler is volcanic ash; ...

Embodiment 3

[0106] A neoprene modified flame-retardant polyurethane sealant, made of the following components in parts by weight:

[0107]

[0108]

[0109] Wherein, the polyurethane prepolymer is made of the following components in parts by weight:

[0110]

[0111] Modified chloroprene rubber is made of the following components in parts by weight:

[0112]

[0113] The isocyanate is 1,5-naphthalene diisocyanate.

[0114] The polyether polyol is a mixture of polyether diol and polyether triol; the weight content of the polyether diol is 30%, the molecular weight of the polyether diol is 500, and the molecular weight of the polyether triol is 1000.

[0115] The neoprene is type CR2441, which is AC;

[0116] The initiator is AIBN;

[0117] The diluent is xylene.

[0118] Flame retardant diluents are phosphonates;

[0119] The phosphonate is diethyl ethyl phosphonate;

[0120] The flame retardant is inorganic phosphate;

[0121] Inorganic phosphate is diammonium hydrogen ...

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

No PUM Login to View More

Abstract

The present invention relates to the technical field of sealing glues, particularly to a chloroprene rubber modified flame-retardant polyurethane sealing glue and a preparation method thereof. The chloroprene rubber modified flame-retardant polyurethane sealing glue comprises a polyurethane prepolymer, a flame retardant diluent, a flame retardant agent, a filler, a thixotropic agent, a catalyst, an adhesion promoter and a storage stabilizer, wherein the polyurethane prepolymer comprises polyether polyol, a modified chloroprene rubber, a flame retardant diluent, a catalyst and isocyanate, and the modified chloroprene rubber comprises a chloroprene rubber, HEMA, MMA, an initiator and a diluent. The preparation method comprises: 1, preparing a modified chloroprene rubber; 2, preparing a polyurethane prepolymer; and 3, preparing a flame-retardant sealing glue. According to the present invention, the chloroprene rubber modified flame-retardant polyurethane sealing glue has advantages of strong migration resistance, good adhesion and excellent flame retardance; and the preparation method is simple, and is suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to the technical field of sealants, in particular to a chloroprene rubber modified flame-retardant polyurethane sealant and a preparation method thereof. Background technique [0002] Due to its excellent performance, polyurethane sealants play an increasingly important role in today's national production and construction, especially in the fields of construction and transportation. With the acceleration of urbanization and the increasing popularity of vehicles, the demand for polyurethane sealants There is bound to be substantial growth. At present, more and more decorative materials are turning to organic materials, and the chances of fires in buildings or vehicles are also increasing. The country has higher and higher requirements for fire-retardant properties of building materials and auto parts. [0003] As an organic composite material, polyurethane sealant is favored by people for its good adhesion and wide application ran...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/08C09J11/06C09J11/04C08G18/69C08G18/48C08G18/12C08F279/00C08F220/20C08F220/14
CPCC08F279/00C08G18/12C08G18/4812C08G18/698C08L2201/02C09J11/04C09J11/06C09J175/08C08F220/20C08F220/14
Inventor 武安福陈熙衔詹锋徐隽
Owner GUANGDONG PUSTAR SEALED RAYON CO LTD