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Elastomer pmma layered composites having improved properties

A composite, plastic layer technology, applied in the direction of layered product processing, synthetic resin layered products, lamination, etc., can solve the problems of insufficient transparency, amorphous TPU fracture resistance does not lead to sufficient effects, etc.

Inactive Publication Date: 2016-01-06
ROHM G M B H +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, crystalline TPU is insufficiently transparent for glazing, while amorphous TPU does not lead to a sufficient effect in fracture resistance

Method used

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  • Elastomer pmma layered composites having improved properties
  • Elastomer pmma layered composites having improved properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Coextrusion by means of Dr. Collin equipped with a multilayer extrusion die with a width of 240mm, a single screw extruder (45mm screw diameter and screw length 40D) and two coextruders (screw diameter 20mm, screw length 40D) Extrusion equipment extrudes the plastic composite body of the present invention, and this plastic composite body is made up of three layers, wherein two outer layers (1) and (2) are made of 6N, and the inner layer is made of TPU(3) L785A10 constitutes. said two by Each of the outer layers (1) and (2) made of 6N had a thickness of 2 mm. by TPU(3) The layer thickness of the inner layer composed of L785A10 was 500 μm. Test samples with a width and length of 90 mm each were cut out from the extruded sheet using a laser. These samples were subjected to a puncture test according to DINE EN ISO 6603-2 for determining the mechanical properties. The puncture experiments were carried out in a Zwick / Roell Amsler HTM5020 with a maximum puncture forc...

Embodiment 2

[0076] As described in Example 1, a plastic composite consisting of three layers was extruded on a Dr. Collin coextrusion apparatus. Here the two outer layers (1) and (2) consist of 6N composition, and the inner layer is made of TPU L1154D10(3), a TPU based on aliphatic polyether. As in Example 1, the two Each of the outer layers (1) and (2) made of 6N had a thickness of 2 mm. by TPU The layer thickness of the inner layer composed of L1154D10(3) was 500 μm. As in Example 1, test samples with a side length of 90 mm were cut out from the extruded sheet using a laser. The test samples were subjected to a puncture test according to DINE EN ISO 6603-2 for determining the mechanical properties.

[0077] with TPU based on aliphatic polyester L785A10 with The combination of 6N made the complex used in Example 1 compared to the use of TPU L1154D10(3) with The puncture work of the 6N complex is 3500Nmm.

Embodiment 3

[0079] As described in Example 1, a plastic composite sheet consisting of three layers was produced on a Dr. Collin coextrusion device, wherein the two outer layers (1) and (2) were made of 6N composition, and the inner layer is made of TPU L1154D10(3), a TPU based on aliphatic polyether.

[0080] A puncture test for determining the mechanical properties according to DIN EN ISO 6603-2 was carried out on test samples processed from the sheets.

[0081] by TPU L1185A10(3) (an aliphatic polyether based TPU) with The puncture work of the composite made of the combination of 6N is 6000Nmm.

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Abstract

The invention relates to a plastic layered composite, in particular for vehicle glazing. The composite consists of at least three layers, the two outer layers consisting of a transparent poly(methyl methacrylate) (PMMA) and the inner layer consisting of a thermoplastic polyurethane (TPU). The plastic layered composite passes the ECE R43 ball impact test and has improved acoustic properties compared to prior art plastic composites of the same dimensions.

Description

technical field [0001] The invention relates to a plastic layer composite, in particular for vehicle glazing. The composite consists of at least three layers, wherein the two outer layers consist of transparent polymethyl(meth)acrylate (PMMA), and the inner layer consists of thermoplastic polyurethane (TPU). The plastic layered composite passes the falling ball test according to ECER43 and has improved acoustic performance over prior art plastic composites of the same size. Background technique [0002] For applications in technical fields such as partitions, building glazing or glazing in automotive construction, transparent sheets or panels with high fracture resistance are required. Transparent plastics such as PMMA are here a good and particularly lightweight substitute for plates made of mineral glass. For polymethyl(meth)acrylate (PMMA), toughness can be improved by adding impact modifiers. This often results in a reduction of other properties such as modulus of ela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30B32B27/40
CPCB32B27/08B32B27/18B32B27/308B32B2307/102B32B2307/412B32B2307/536B32B2307/554B32B2307/558B32B2605/006B32B27/40B32B27/30B32B37/06B32B37/10B32B2250/03B32B2309/02B32B2309/12B32B2419/00
Inventor W·赫斯A·施密特A·马尼斯
Owner ROHM G M B H