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A kind of foaming thermoplastic polysiloxane-polyurethane block copolymer and its preparation method and application

A technology of block copolymer and polysiloxane, which is applied in the field of foaming thermoplastic polysiloxane-polyurethane block copolymer and its preparation, can solve the problems of poor tensile strength and tear strength, poor skin-friendly property, mechanical Poor performance and other problems, to achieve the effects of penetration resistance mechanical properties, excellent skin-friendly properties, and excellent mechanical properties

Active Publication Date: 2021-10-29
MIRACLL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermoplastic polyurethane foam beads (ETPU) and its preparation method have been disclosed in patent WO2007 / 082838, thermoplastic polyester foam beads (ETPEE) and its preparation method have been disclosed in patent CN201710413319.0, polyamides Elastomer foamed beads (ETPAE) and its preparation method have been disclosed in patent CN106697511 A, polypropylene foamed beads (EPP) and its preparation method have been disclosed in patent CN01819174.6, because these foamed beads There are a large number of cells on the surface of the material, as well as the characteristics of the material itself, so that the products made of foamed beads have poor skin-friendly properties, poor touch, and insufficient resistance to dirt and penetration.
Silicone materials have excellent skin-friendly properties, light stability, dirt resistance and penetration resistance, but their mechanical properties are poor, especially the tensile strength and tear strength. Thermoplastic polysiloxane-polyurethane block copolymers (TPSiU) is a combination of the excellent properties of silicone materials and thermoplastic polyurethane elastomers

Method used

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  • A kind of foaming thermoplastic polysiloxane-polyurethane block copolymer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 1000g of thermoplastic polysiloxane-polyurethane block copolymer, 400g of carbon dioxide and 2000g of water into a 50L autoclave to form a suspension, then raise the temperature to 120°C, keep the pressure at 90bar, and discharge the suspension in the pressure vessel In the atmospheric environment, dry treatment to obtain a foamed thermoplastic polysiloxane-polyurethane block copolymer, which has a density of 0.18g / cm after testing. 3 . The thermoplastic polysiloxane-polyurethane block copolymer used therein contains an organosilicon block structure, and the number average molecular weight of the organosilicon block is 2000g / mol, and the silicon element content of the thermoplastic polysiloxane-polyurethane block copolymer is It is 10wt%, the rheological softening point is 100°C, and the hardness is 80ShoreA.

[0021] The foamed thermoplastic polysiloxane-polyurethane block copolymer obtained above was filled into a mold having a length of 300 mm x a width of 250 m...

Embodiment 2

[0023] Add 1000g of thermoplastic polysiloxane-polyurethane block copolymer, 250g of butane and 5000g of water into a 50L autoclave to form a suspension, then raise the temperature to 80°C, keep the pressure at 150bar, and keep the temperature and pressure for 180 minutes. The suspension in the pressure vessel is discharged into the atmosphere, and dried to obtain a foamed thermoplastic polysiloxane-polyurethane block copolymer, which has a density of 0.05g / cm after testing. 3 . The thermoplastic polysiloxane-polyurethane block copolymer used therein contains an organosilicon block structure, and the number average molecular weight of the organosilicon block is 5000g / mol, and the silicon element content of the thermoplastic polysiloxane-polyurethane block copolymer is 0.5wt%, the rheological softening point is 70°C, and the hardness is 30ShoreA.

[0024] The foamed thermoplastic polysiloxane-polyurethane block copolymer obtained above was filled into a mold having a length of...

Embodiment 3

[0026] Add 1000g of thermoplastic polysiloxane-polyurethane block copolymer, 1000g of nitrogen and 1000g of water into a 50L autoclave to form a suspension, then raise the temperature to 180°C, keep the pressure at 10bar, and reduce the pressure after 90 minutes at constant temperature and pressure The suspension in the container is discharged into the atmosphere, and dried to obtain a foamed thermoplastic polysiloxane-polyurethane block copolymer, which has a density of 0.5g / cm after testing. 3 . The thermoplastic polysiloxane-polyurethane block copolymer used therein contains organosilicon block structure, and the number average molecular weight of the organosilicon block is 300g / mol, the silicon of thermoplastic polysiloxane-polyurethane block copolymer The element content is 30wt%, the rheological softening point is 170°C, and the hardness is 100ShoreA.

[0027] Stir 100g of the foamed thermoplastic polysiloxane-polyurethane block copolymer obtained above, 30g of PU envir...

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Abstract

The invention belongs to the technical field of chemical material synthesis, and in particular relates to a foamed thermoplastic polysiloxane-polyurethane block copolymer and its preparation method and application. The foamed thermoplastic polysiloxane-polyurethane block copolymer includes silicon content 0.5-30wt% and a Shore hardness of 30A-80D thermoplastic polysiloxane-polyurethane block copolymer; the present invention adopts thermoplastic polysiloxane-polyurethane block copolymer to prepare foamed thermoplastic polysiloxane-polyurethane Block copolymers based on thermoplastic polysiloxane-polyurethane block copolymers have excellent skin-friendly properties, yellowing resistance, stain resistance, penetration resistance and excellent mechanical properties, making the resulting foamed thermoplastic polysiloxane ‑Based on the excellent performance of polyurethane block copolymer, it also has the performance of light weight and high resilience.

Description

technical field [0001] The invention belongs to the technical field of chemical material synthesis, and in particular relates to a foamed thermoplastic polysiloxane-polyurethane block copolymer and its preparation method and application. Background technique [0002] Using plastic resin beads as the matrix, a large number of air bubbles are filled inside the plastic beads by extrusion foaming granulation or autoclave foaming to obtain polymer foamed beads. The foam material has a series of advantages such as low density, heat insulation, high specific strength, high elasticity, cushioning, etc., so it is widely used in the fields of packaging, industry, agriculture, transportation, military industry, aerospace industry, and daily necessities. application. Thermoplastic polyurethane foam beads (ETPU) and its preparation method have been disclosed in patent WO2007 / 082838, thermoplastic polyester foam beads (ETPEE) and its preparation method have been disclosed in patent CN201...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/12C08J9/14C08L75/04
CPCC08J9/122C08J9/141C08J2203/06C08J2203/14C08J2203/182C08J2375/04
Inventor 杨冲冲宋红玮刘德富任光雷钮华荣
Owner MIRACLL CHEM
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