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High-transparency low-shrinkage TPU film and preparation method thereof

A low shrinkage, film technology, applied in the field of high transparency and low shrinkage TPU film and its preparation, to achieve the effect of high mechanical strength and good transparency

Pending Publication Date: 2021-09-03
SUZHOU XIONGLIN NEW MATERIAL SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the invention uses inorganic materials to reduce its shrinkage rate. After all, there is still a compatibility problem between inorganic materials and polymer materials.

Method used

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  • High-transparency low-shrinkage TPU film and preparation method thereof
  • High-transparency low-shrinkage TPU film and preparation method thereof
  • High-transparency low-shrinkage TPU film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In the present embodiment, a TPU film having a high transparent low shrinkage is provided, and the prepared material of the TPU film of the high transparent low shrinkage ratio includes a weight part of the component:

[0034]

[0035] The TPU particles are polyester TPU particles (German Bayer 5377), and the weight average molecular weight of polycarbonate is 40,000 (Liaocheng Tongda Chemical), and the antioxidant is an antioxidant 3114.

[0036] Its preparation method includes the following steps:

[0037] (1) TPU particles were mixed with (4-hydroxycyclohexyl) methyl) carbamate and an antioxidant mixed under the rotational speed 700R / min, and the double screw extruder was added from the main feed opening;

[0038](2) Polycarbonate with 1- (2,4-dihydroxy-3-trifluoromethyl-phenyl) -3-methyl-buthalone is mixed under the rotational speed 200R / min, from the side The feed opening is added to the twin screw extruder, extruded molding, and the twinkling speed of the twin-s...

Embodiment 2

[0040] In the present embodiment, a TPU film having a high transparent low shrinkage is provided, and the prepared material of the TPU film of the high transparent low shrinkage ratio includes a weight part of the component:

[0041]

[0042] The TPU particles are polyester TPU granules (German Bayer 5377), and the weight average molecular weight of polycarbonate is 40,000 (Liaocheng Tongda Chemical), and the antioxidant is an antioxidant 1010.

[0043] Its preparation method includes the following steps:

[0044] (1) TPU particles were mixed with (4-hydroxy cyclohexyl) methyl) carbamate and an antioxidant for 30 min under the rotational speed of 600r / min, and the double screw extruder was added from the main feed opening;

[0045] (2) Polycarbonate and 1- (2,4-dihydroxy-3-trifluoromethyl-phenyl) -3-methyl-1-ketone mixed under the rotational speed 300R / min, from the side The feed opening is added to the twin screw extruder, extruded molding, and the twinkling speed of the tw...

Embodiment 3

[0047] In the present embodiment, a TPU film having a high transparent low shrinkage is provided, and the prepared material of the TPU film of the high transparent low shrinkage ratio includes a weight part of the component:

[0048]

[0049] The TPU granules are polyester TPU particles (German Bayer 5377), the weight average molecular weight of polycarbonate is 40,000 (Liaocheng Tongda Chemical), and the antioxidant is an antioxidant 168.

[0050] Its preparation method includes the following steps:

[0051] (1) TPU particles were mixed with (4-hydroxycyclohexyl) methyl) carbamate and antioxidants for 15 min under the rotational speed 1000r / min, and the double screw extruder was added from the main feed opening;

[0052] (2) Polycarbonate with 1- (2,4-dihydroxy-3-trifluoromethyl-phenyl) -3-methyl-but 1-ketone is mixed under the rotational speed 100R / min, from the side The feed opening is added to the twin screw extruder, extruded molding, and the twinkling speed of the twin...

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Abstract

The invention provides a high-transparency low-shrinkage TPU film and a preparation method thereof. The high-transparency low-shrinkage TPU film is prepared from, in parts by weight, 100 parts of TPU particles, 30-60 parts of polycarbonate, 0.1-0.5 part of (4-hydroxycyclohexyl) methyl) tert-butyl carbamate, 0.1-0.5 part of 1-(2, 4-dihydroxy-3-trifluoromethyl-phenyl)-3-methyl-butyl-1-one and 1-3 parts of an antioxidant. The shrinkage rate of the TPU film is as low as 0.1% or below, the TPU film has good transparency, the light transmittance is 98.5% or above, the mechanical strength is high, and the TPU film is suitable for multiple fields such as automobiles, household appliances, electric appliance instruments and mechanical industry.

Description

Technical field [0001] The present invention belongs to the technical field of polymer material, and is related to a TPU film having a high transparent low shrinkage and a preparation method thereof. Background technique [0002] Polyurethane materials have application value in many fields such as automobiles, household appliances, electrical instruments, and machinery industries, but it is currently easy to warp, and its application is limited by the ambassador. Therefore, materials for preparing low shrinkage are still the focus of research in the art. [0003] CN101759934A discloses a high flow, high toughness, low shrinkage-filled modified polypropylene material, formulated according to the following weight percentage of materials: polypropylene 45 to 80%, powder polyethylene 5 to 18%, inorganic filler 8 ~ 25%, calcium salt crystal must be 5 ~ 12%, an antioxidant 0.1-1%, and other auxiliaries 0-2%, the advantages of the invention are: 1, the present invention has significantl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L69/00C08K5/17C08K5/132C08J5/18
CPCC08J5/18C08J2375/04C08J2469/00C08K5/175C08K5/132
Inventor 何建雄
Owner SUZHOU XIONGLIN NEW MATERIAL SCI & TECH CO LTD
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