Cold roof prepared from PET modified film

A modification and roofing technology, which is applied to roofs, roofs using flat/curved panels, roof cladding, etc., can solve problems such as poor weather resistance and heat resistance, limited roof panel diversification, and poor thermal insulation performance. Achieve excellent weather resistance and heat resistance, not easy to embrittlement, fall off and yellowing, good heat insulation and energy saving

Inactive Publication Date: 2020-12-08
JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are environmental protection problems when using this adhesive to cover the film; heat curing takes 5 days; low yield, low production efficiency, high cost; low peel strength; poor weather resistance and heat resistance; poor peeling resistance; no UV protection, etc. , which will lead to yellowing and shedding of the coating during the processing and use of the board, resulting in a lack of protection for the substrate; in addition, the existing roof panels generally have a single function, poor thermal insulation performance, and are not resistant to corrosion. Ultraviolet rays, which limit the development of diversified roof panels

Method used

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  • Cold roof prepared from PET modified film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation of a heat-reflecting roof panel prepared by a PET modified film comprises the following steps:

[0022] (1) Pre-treated aluminum foil board: the aluminum foil board is pickled and passivated, and then dried to obtain a pre-treated aluminum foil board;

[0023] (2) Pass SiO with a particle size of 6nm 2 Particle modified PET to obtain modified PET; the modified PET raw material is pre-crystallized and dried, and then enters the extruder to melt and plasticize, and then passes through the pre-filter, metering pump, and main filter to carry out the die head; The adsorption device is pressed on the quenching wheel, rapidly cooled to form a cast sheet, and then stretched longitudinally and transversely in sequence (the longitudinal stretching ratio is 3.0, and the transverse stretching ratio is 3.4). The base film undergoes shaping, cooling, thickness measurement, edge cutting, static elimination treatment and online winding to obtain a PET modified film.

...

Embodiment 2

[0027] A kind of preparation of the cool roof that PET modified film prepares comprises the steps:

[0028] (1) Pretreated steel plate: the steel plate is subjected to alkali washing and passivation treatment, and then dried to obtain a pretreated steel plate;

[0029] (2) Pass SiO with a particle size of 12nm 2 Particle modified PET to obtain modified PET; the modified PET raw material is pre-crystallized and dried, and then enters the extruder to melt and plasticize, and then passes through the pre-filter, metering pump, and main filter to carry out the die head; The adsorption device is pressed on the quenching wheel, rapidly cooled to form a cast sheet, and then undergoes longitudinal and transverse stretching in sequence (the longitudinal stretching ratio is 3.2, and the transverse stretching ratio is 3.6). The base film undergoes shaping, cooling, thickness measurement, edge cutting, static elimination treatment and online winding to obtain a PET modified film.

[0030...

Embodiment 3

[0033] A kind of preparation of the cool roof that PET modified film prepares comprises the steps:

[0034] (1) Pre-treated copper plate: the substrate plate is washed with water and passivated, and then dried to obtain a pre-treated copper plate;

[0035] (2) Pass SiO with a particle size of 20nm 2 Particle modified PET to obtain modified PET; the modified PET raw material is pre-crystallized and dried, and then enters the extruder to melt and plasticize, and then passes through the pre-filter, metering pump, and main filter to carry out the die head; The adsorption device is pressed on the quenching wheel, rapidly cooled to form a cast sheet, and then stretched longitudinally and transversely in sequence (the longitudinal stretching ratio is 3.4, and the transverse stretching ratio is 3.8). The base film undergoes shaping, cooling, thickness measurement, edge cutting, static elimination treatment and online winding to obtain a PET modified film.

[0036] (3) Cover the PET ...

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Abstract

The invention relates to a cold roof prepared from a PET modified film comprising a base material plate and a PET modified film compounded on the upper surface of the base material plate through hot pressing. The preparation method of the cold roof prepared from the PET modified film comprises the following steps: (1), pretreating a base material plate; (2), modifying PET (Polyethylene Terephthalate) through nano SiO2 particles to obtain modified PET; carrying out pre-crystallization and drying treatment on a modified PET raw material, feeding the material into an extruder for melting and plasticizing, and carrying out die head treatment through a pre-filter, a metering pump and a main filter; and pressing the material on a quenching wheel by an electrostatic adsorption device, rapidly performing cooling to form a cast sheet, and then sequentially stretching the sheet longitudinally and transversely. enabling the base film to be subjected to shaping, cooling, thickness measurement, edge cutting, static elimination treatment and online rolling to obtain the PET modified film; and (3), covering the pretreated base material plate with a PET modified film, and feeding the base materialplate into a hot press for hot press molding. According to the invention, the PET film is modified through the nano SiO2 particles, so that the PET film does not need to be coated with an adhesive ofa middle layer while being laminated with a metal plate, and the PET film can play a role in laminating and also can play a role in gluing.

Description

technical field [0001] The invention relates to the technical field of building envelope, and more specifically relates to a cool roof prepared from a PET modified film. Background technique [0002] Boards generally refer to building material boards used in the construction field, and are widely used in the construction of walls, ceilings, floors, roofs, and walls; boards are mainly divided into wooden boards and metal boards, and wooden boards are mostly used for construction. For indoor construction, metal sheets are mostly used in building exterior walls, roofs and other building parts that require high sheet performance. [0003] For a long time, the main method of anti-corrosion treatment of metal plates is to coat the surface of metal plates. The polymer film used for the manufacture of coated metal plates needs to have thermoplastic lamination ability and be compatible with the physical and chemical properties of different packaging contents , Commonly used polymer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/28C09J167/02C09J11/04E04D3/35
CPCC09J7/28C09J167/02C09J11/04E04D3/351C08K2201/011C08K2201/005C09J2400/163C08K3/36
Inventor 王以琳王贤中刘保奎江洪祥黄小宁
Owner JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD
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