Modified polyurethane elastomer based on in-situ polymerization of titanium dioxide and preparation method of modified polyurethane elastomer

A polyurethane elastomer, titanium dioxide technology, applied in the field of material chemistry, can solve the problems of poor polymer compatibility, large amount of addition, easy migration to the surface, etc., and achieves the effect of good compatibility and high dispersion.

Inactive Publication Date: 2017-03-29
WUXI YONGXING METAL HOSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual use of additive-type flame retardants, the amount added is often relatively large, and the flame-retardant effect is low. In addition, there are also poor compatibility of polymers, easy migration to the surface, and the mechanical properties of materials Therefore, the preparation of intrinsically flame-retardant polyurethane materials has become a hot spot of concern

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A polyurethane elastomer based on in-situ polymerization and modification of titanium dioxide, which is prepared from the following components in parts by weight: 18 parts of polyurethane, 12 parts of phenyl dichlorophosphate, 13 parts of isocyanate, and 8 parts of dihydroxydiphenyl sulfone , 7 parts of polyester diol, 11 parts of titanium dioxide, 7 parts of silicon carbide, 6 parts of magnesium oxide, 7 parts of montmorillonite, and 5 parts of talcum powder.

[0026] A preparation method based on titanium dioxide in-situ polymerization modified polyurethane elastomer, comprising the following steps:

[0027] (1) Matrix preparation: mix the polyurethane and phenyl dichlorophosphate evenly, add to the internal mixer, the blending temperature is 90°C, the blending time is 5 minutes, and after the blending is completed, place it at 70°C for 7 hours; Add stabilizer and plasticizer and continue blending at 90°C for 8 minutes to obtain the matrix;

[0028] (2) Modifier prep...

Embodiment 2

[0035] A polyurethane elastomer based on in-situ polymerization and modification of titanium dioxide, which is prepared from the following components in proportions by weight: 28 parts of polyurethane, 22 parts of phenyl dichlorophosphate, 24 parts of isocyanate, and 18 parts of dihydroxydiphenyl sulfone , 13 parts of polyester diol, 15 parts of titanium dioxide, 14 parts of silicon carbide, 11 parts of magnesium oxide, 12 parts of montmorillonite, and 8 parts of talcum powder.

[0036] A preparation method based on titanium dioxide in-situ polymerization modified polyurethane elastomer, comprising the following steps:

[0037] (1) Matrix preparation: mix the polyurethane and phenyl dichlorophosphate evenly, add to the internal mixer, the blending temperature is 120°C, the blending time is 15 minutes, and after the blending is completed, place it at 96°C for 9 hours; Add stabilizer and plasticizer and continue blending at 125°C for 13 minutes to obtain the matrix;

[0038] (2...

Embodiment 3

[0045] A polyurethane elastomer based on in-situ polymerization modification of titanium dioxide, which is prepared by the following components in parts by weight: 34 parts of polyurethane, 28 parts of phenyl dichlorophosphate, 32 parts of isocyanate, and 24 parts of dihydroxydiphenyl sulfone , 19 parts of polyester diol, 19 parts of titanium dioxide, 18 parts of silicon carbide, 14 parts of magnesium oxide, 18 parts of montmorillonite, and 12 parts of talcum powder.

[0046] A preparation method based on titanium dioxide in-situ polymerization modified polyurethane elastomer, comprising the following steps:

[0047] (1) Matrix preparation: mix the polyurethane and phenyl dichlorophosphate evenly, add to the internal mixer, the blending temperature is 135°C, the blending time is 21 minutes, and after the blending is completed, place it at 105°C for 12 hours; Add stabilizers and plasticizers and continue blending at 135°C for 17 minutes to obtain the matrix;

[0048] (2) Modif...

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Abstract

The invention discloses modified polyurethane elastomer based on in-situ polymerization of titanium dioxide and a preparation method of the modified polyurethane elastomer. The modified polyurethane elastomer is prepared from the following components, according to a weight part ratio, 18-34 parts of polyurethane, 12-28 parts of phenyl dichlorophosphate, 13-32 parts of isocyanate, 8-24 parts of dihydroxy diphenyl sulfone, 7-19 parts of polyester glycol, 11-19 parts of titanium dioxide, 7-18 parts of silicon carbide, 6-14 parts of magnesium oxide, 7-18 parts of montmorillonite and 5-12 parts of talcum powder. (1) The modified polyurethane elastomer based on in-situ polymerization of titanium dioxide is modified polyurethane with flame-retardant nature. (2) The polymerization components of the polyurethane elastomer are good in compatibility and dispersion. (3) The original mechanical properties of the polyurethane elastomer are ensured.

Description

technical field [0001] The invention belongs to the field of material chemistry and relates to a thermoplastic elastomer, in particular to a titanium dioxide-based polyurethane elastomer modified by in-situ polymerization and a preparation method thereof. Background technique [0002] From the perspective of molecular structure, polyurethane is a block polymer, which is composed of two parts: hard segment and soft segment. Generally speaking, diisocyanate and chain extender form the hard segment of polyurethane, and the flexible long chain of oligomer polyol is its The soft segment, the hard segment and the soft segment are embedded to form a repeating structural unit of the polymer. The performance of polyurethane has a great relationship with its molecular structure. In addition to carbamate groups, polyurethane molecular structures generally contain ester groups, acid groups, urea groups, allophanate groups, biuret groups, Aromatic rings and aliphatic chains and other gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L75/04C08K13/02C08K5/523C08K3/22C08K3/34C08G18/66C08G18/42C08G18/32
CPCC08L75/06C08G18/3872C08G18/6633C08K2201/014C08L2201/02C08L2205/02C08L2207/04C08L75/04C08K13/02C08K5/523C08K2003/2241C08K3/34C08K2003/222C08K3/346
Inventor 王铮
Owner WUXI YONGXING METAL HOSE
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