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Decorative veneering sheet and preparation method thereof

A veneer and film technology, applied in chemical instruments and methods, lamination devices, flat products, etc., can solve the problems of poor weather resistance of PETG, limited scope of action, and inability to achieve long-term outdoor use.

Inactive Publication Date: 2021-07-16
JIANGSU HUAXIN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its products are highly transparent and have excellent impact resistance. They are especially suitable for forming thick-walled transparent products. PETG has poor weather resistance and is prone to yellowing. The conventional way to improve weather resistance is to add ultraviolet absorbers, but this method has a limited range of action and cannot reach the level of long-term outdoor use; ASA (acrylate-styrene-acrylonitrile ) Resin is a copolymer of acrylic rubber and SAN, ASA has good colorability, because the resin itself has excellent weather resistance, it can be dyed into various bright colors without fading
Products processed with ASA resin do not need surface protection such as spray painting and electroplating, and can be used directly outdoors. After being exposed to sunlight for 9 to 15 months, the impact strength and elongation hardly decrease, and the color hardly changes. However, ASA High cost, limited application in the field of decorative materials

Method used

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  • Decorative veneering sheet and preparation method thereof
  • Decorative veneering sheet and preparation method thereof
  • Decorative veneering sheet and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0030] A decorative veneer sheet 100 and its preparation method according to the first aspect of the present invention, comprising:

[0031] PETG resin diaphragm 10 has opposite inner end face 11 and outer end face 12;

[0032] The ASA resin film 20 is pasted on the outer end surface 12 of the PETG resin film 10 .

[0033] In this technical solution, by covering the surface of the PETG resin film 10 with a layer of ASA resin film 20, the anti-ultraviolet performance is obviously improved, and the transparency is good, the weather resistance is strong, and the mechanical properties are superior; at the same time, the cost is reduced.

[0034] In an example of the present invention, the PETG resin film 10 and the ASA resin film 20 are formed by a co-extrusion process.

[0035] In an example of the present invention, the components of the ASA resin film 20 and the content of each component by weight are as follows: resin 94-98wt%, toner 0-5wt%, antioxidant 0.1-0.5wt%, 0.1-0.5 w...

Embodiment 1

[0049] ASA resin diaphragm 20 components and each component content are as follows: by weight, ASA (LI970) resin 93wt%, toner 5wt%, antioxidant 0.5wt%, ultraviolet absorber (Tinuvin 234) 0.5wt%, increase Sticky chain extender JW-AG 1wt%.

[0050] The 10 components of the PETG resin film and the contents of each component are as follows: PETG (S2008) resin 94%, toner 5wt%, antioxidant 0.5wt%, ultraviolet absorber (Tinuvin 234) 0.5wt%, rheology control agent RC -620 0.5 wt%.

[0051] The extrusion molding process of ASA / PETG co-extruded film is carried out as follows:

[0052] 1) After the ASA resin is dried, it is fully mixed with toner, antioxidant, ultraviolet absorber, and viscosity-increasing chain extender through a high-speed mixer to obtain an ASA compound, which is added to an extruder to melt and plasticize;

[0053] 2) After the PETG resin is dried, it is fully mixed with toner, antioxidant, ultraviolet absorber, and rheology regulator through high-speed mixing to o...

Embodiment 2

[0057] ASA resin diaphragm 20 components and each component content are as follows: by weight, ASA (LI970) resin 98wt%, antioxidant 0.5wt%, ultraviolet absorber (Tinuvin 234) 0.5wt%, tackifying chain extender 0.5 wt%.

[0058] The 10 components of the PETG resin film and the contents of each component are as follows: PETG (S2008) resin 98%, antioxidant 0.5wt%, ultraviolet absorber (Tinuvin 234) 0.5wt%, rheology control agent RC-620 0.5wt% .

[0059] The extrusion molding process of ASA / PETG co-extruded film is carried out as follows:

[0060] 1) After the ASA resin is dried, it is fully mixed with an antioxidant, an ultraviolet absorber, and a viscosity-increasing chain extender through a high-speed mixer to obtain an ASA compound, which is added to an extruder to melt and plasticize;

[0061] 2) After the PETG resin is dried, it is fully mixed with an antioxidant, an ultraviolet absorber, and a rheology regulator through high-speed mixing to obtain a PETG compound, which is...

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Abstract

The invention discloses a decorative veneering sheet and a preparation method thereof. The decorative veneering sheet comprises a PETG resin membrane having an inner end face and an outer end face which are opposite to each other, and an ASA resin membrane attached to the outer end face of the PETG resin membrane. The preparation method comprises the steps of 1) drying ASA resin particles, fully mixing the dried ASA resin particles with a toner, an antioxidant and an ultraviolet light absorber through a high-speed mixer to obtain an ASA mixture, and adding the ASA mixture into an extruder for melting and plasticizing; 2) drying the PETG resin particles, fully mixing the dried PETG resin particles with a toner, an antioxidant and an ultraviolet light absorber at a high speed to obtain a PETG mixture, and adding the PETG mixture into an extruder for melting and plasticizing; and 3) carrying out co-extrusion mouth die casting, cooling, thickness measurement, traction, coiling and slitting on the materials melted and plasticized in the step S10 and the step S20 to obtain ASA / PETG co-extrusion films with different thickness specifications. The decorative veneering sheet is good in transparency, excellent in weather resistance, good in mechanical property and low in cost.

Description

technical field [0001] The method relates to the technical field of thermal compounding of polymer materials, in particular to a decorative veneer sheet and a preparation method thereof. Background technique [0002] PETG is a PET modified material, which is a non-crystalline copolyester. In the PET production process, a certain amount of ethylene glycol is replaced by 1,4-cyclohexane dimethanol (CHDM), which can prevent crystallization, thereby improving processing and transparency. Its products are highly transparent and have excellent impact resistance. They are especially suitable for forming thick-walled transparent products. PETG has poor weather resistance and is prone to yellowing. The conventional way to improve weather resistance is to add ultraviolet absorbers, but this method has a limited range of action and cannot reach the level of long-term outdoor use; ASA (acrylate-styrene-acrylonitrile ) resin is a copolymer of acrylic rubber and SAN. ASA has good colora...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/36B32B27/30B32B27/18B32B37/15C08J5/18C08L67/02C08L51/04B29D7/01
CPCB32B27/08B32B27/36B32B27/302B32B27/30B32B27/18B32B37/153C08J5/18B29D7/01C08J2367/02C08J2351/04B32B2307/71B32B2307/412B32B2307/712
Inventor 王远震王光战叶青吴赛丛后罗
Owner JIANGSU HUAXIN NEW MATERIAL
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