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Polyurethane composition, preparation method and application thereof

A polyurethane and composition technology, applied in the field of polyurethane composition and its preparation, can solve problems such as loss, no reaction sites of flame retardants, and environmental pollution

Pending Publication Date: 2021-03-12
GUANGDONG GUANGSHAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN101977995A discloses a halogen flame-retardant thermoplastic polyurethane, which includes a halogenated flame retardant, antimony oxide and talc, the halogenated flame retardant can be a chlorinated or brominated compound, and the antimony oxide compound is selected from antimony trioxide and pentoxide Diantimony, which exhibits excellent flame retardant properties, but because halogen flame retardants pollute the environment and cause harm to the human body, the application of halogen flame retardants has been banned
The use of additive flame retardants plays a significant role in improving the flame retardant performance of polyurethane, but it also brings some inevitable problems: flame retardants have no reaction sites, poor compatibility with matrix resins, and flame retardant elements during long-term storage or use. It will migrate to the surface of the material and cause a rubber-like "blooming" phenomenon

Method used

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  • Polyurethane composition, preparation method and application thereof
  • Polyurethane composition, preparation method and application thereof
  • Polyurethane composition, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0085] A phosphorus-containing small molecular alcohol has the following structure:

[0086]

[0087] The preparation method is as follows:

[0088]Add 2 mol of dimethyl phosphite, 1 mol of o-phthalaldehyde, and 20 mL of ethanol into a three-necked flask equipped with magnetic stirring and a thermometer. Under stirring, keep the temperature below 5°C in an ice-water bath, add 2 mol of triethylamine dropwise, gradually Raise the temperature to reflux, continue the reaction for 1 h, and distill under reduced pressure to obtain the reactive flame retardant with the above structure.

[0089] 1 H NMR (400MHz, DMSO-d6): δ=7.10-7.14(s, 4H, ph-H), 4.58-4.62(s, 2H, -CH-P), 3.40-3.45(d, 12H, -P-O- CH 3 ).

preparation example 2

[0091] A phosphorus-containing small molecular alcohol has the following structure:

[0092]

[0093] The preparation method is as follows:

[0094] Add 1 mol of trimethyl phosphate, 2.1 mol of 1,4-benzenediethanol, 0.05 mol of cadmium acetate and 0.05 mol of antimony trioxide into a 200mL three-port glass reactor, heat up to reflux temperature, reflux for 7 hours, filter after cooling, spin Methanol was evaporated to give the product.

[0095] 1 H NMR (400MHz, DMSO-d6): δ=7.02-7.16(m,8H,-Ph),4.29-4.41(m,4H,-P-O-C H 2 -),4.00-4.04(t,2H,-OH),3.73-3.85(m,4H,-C H 2 -OH),3.44-3.48(d,3H,-P-O-CH 3 ),2.92-2.96(m,4H,-P-O-CH 2 -C H 2 -),2.73-2.83(m,4H,-C H 2 -CH 2 -OH).

preparation example 3

[0097] A phosphorus-containing small molecular alcohol has the following structure:

[0098]

[0099] The preparation method is as follows:

[0100] Add 1 mol of triphenyl phosphate, 2.1 mol of 1,4-benzenediethanol, 0.05 mol of cadmium acetate and 0.05 mol of antimony trioxide into a 200mL three-port glass reactor, heat up to reflux temperature, reflux for 10 hours, filter after cooling, reduce The benzyl alcohol was removed by distillation to obtain the product.

[0101] 1 H NMR (400MHz, DMSO-d6): δ=7.03-7.28(m,13H,-Ph),4.30-4.40(m,4H,-P-O-C H 2 -),4.23-4.26(t,2H,-OH),3.76-3.87(m,4H,-C H 2 -OH),2.93-2.97(m,4H,-P-O-CH 2 -C H 2 -),2.76-2.84(m,4H,-C H 2 -CH 2 -OH).

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Abstract

The invention provides a polyurethane composition, a preparation method and application thereof. The polyurethane composition comprises diisocyanate, macromolecular polyol, a chain extender and a catalyst, wherein the chain extender has the following structure defined in the specification. The polyurethane composition provided by the invention has excellent flame retardant property on the premiseof not adding other flame retardants, is transparent in color, and can be applied to the fields of polyurethane potting materials, foamed polyurethane, thermoplastic polyurethane elastomers and the like.

Description

technical field [0001] The invention belongs to the technical field of synthetic materials, and relates to a polyurethane composition and its preparation method and application. Background technique [0002] Since the groups contained in the polyurethane macromolecules are all strong polar groups, and the macromolecules also contain polyether or polyester flexible segments, the polyurethane has high mechanical strength, oxidation stability, and high flexibility. and resilience, and has excellent oil resistance, solvent resistance, water resistance and fire resistance. It can be mainly used in polyurethane synthetic leather, polyurethane foam, polyurethane coating, polyurethane adhesive, polyurethane rubber (elastomer) and polyurethane fiber. In addition, polyurethane is also used in civil engineering, site drilling, mining and petroleum engineering to block water and stabilize buildings or roadbeds; as a paving material, it is used for runways of sports fields and indoor fl...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/32
CPCC08G18/6666C08G18/4833C08G18/388
Inventor 潘庆崇
Owner GUANGDONG GUANGSHAN NEW MATERIALS CO LTD
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