1. A preparation method of a heat reflection TPU paint surface protective film is characterized by comprising the following steps: the method comprises the following steps:

step one, raw material treatment: weighing nano-scale reflective heat-insulating ceramic materials and TPU particles with certain weight, and stirring and mixing;

step two, preparing TPU particles: mixing and melting the nano-scale reflective heat-insulating ceramic material and TPU particles at the temperature of 116-184 ℃ by using small-sized granulation equipment, and extruding to prepare functional TPU particles;

step three, preparing a TPU raw film: adding functional TPU particles into a material groove by using precision casting equipment, heating the material groove by an extruder at the heating temperature of 114-186 ℃, and extruding and casting the material after melting to prepare a TPU raw film;

step four, preparing a finished product: coating a high-performance pressure-sensitive adhesive on one surface of the TPU raw film by using a precise coating production line, wherein the production temperature is 86-134 ℃, the speed is 14-16m/min, and compounding a PET release film;

coating self-repairing coating on the other side of the TPU film, wherein the production temperature is 92-138 ℃, the speed is 13-17m/min, and compounding a PET protective film.

2. The method for preparing a heat reflective TPU paint protection film according to claim 1, wherein: the type of the TPU granules is 92A.

Background

The current market products have basic functional product functions, such as protection of the appearance of the automobile paint surface and scratch resistance; super-strong anti-corrosion property; and excellent self-recovery properties; has certain functions of stain resistance, easy cleaning and the like.

The manufacturing process in the current market is as follows: 1. and (3) using a precise casting technology to prepare the TPU granules into the TPU original film with uniform thickness and no defect on the surface through an extrusion casting process. 2. Coating a high-performance pressure-sensitive adhesive on one surface of the TPU raw film by using a coating production line through a precise coating technology to form a composite release film; the other side is coated with functional coating with repair function and is compounded with a protective film.

However, the current market products do not have a paint protective film product with a heat reflection function, the current products do not have the performance of heat insulation, the temperature of the sun is high in summer, the surface of the automobile body and the temperature in the automobile are high, the driving experience is seriously influenced, and the gasoline energy consumption is greatly improved. Bringing more use cost and environmental pollution.

Disclosure of Invention

The purpose of the invention is as follows: in order to solve the defects of the prior art, the invention provides a preparation method of a heat reflection TPU paint surface protective film.

The technical scheme is as follows: a preparation method of a heat reflection TPU paint surface protective film comprises the following steps:

step one, raw material treatment: weighing nano-scale reflective heat-insulating ceramic materials and TPU particles with certain weight, and stirring and mixing;

step two, preparing TPU particles: mixing and melting the nano-scale reflective heat-insulating ceramic material and TPU particles at the temperature of 116-184 ℃ by using small-sized granulation equipment, and extruding to prepare functional TPU particles;

step three, preparing a TPU raw film: adding functional TPU particles into a material groove by using precision casting equipment, heating the material groove by an extruder at the heating temperature of 114-186 ℃, and extruding and casting the material after melting to prepare a TPU raw film;

step four, preparing a finished product: coating a high-performance pressure-sensitive adhesive on one surface of the TPU raw film by using a precise coating production line, wherein the production temperature is 86-134 ℃, the speed is 14-16m/min, and compounding a PET release film;

coating self-repairing coating on the other side of the TPU film, wherein the production temperature is 92-138 ℃, the speed is 13-17m/min, and compounding a PET protective film.

As an optimization: the type of the TPU granules is 92A.

Has the advantages that: the specific advantages of the invention are as follows:

1. the thermoplastic high polymer material transparent film is used for protecting the automobile paint surface from being damaged and is widely applied to the protection of the automobile surface; it can also be used in furniture, high-speed rail, aircraft and other aviation equipment, world top luxury cruise ship, etc.

2. The product of the invention can well reflect the heat energy in the air back to the atmosphere, achieve the effect of well blocking the heat energy from entering the automobile body, keep the temperature in the automobile low, well prevent the thermal aging phenomenon of the surface of the automobile paint, and prolong the service life of the automobile paint.

3. The product of the invention is measured by a PE950S spectrophotometer, the infrared band 800-2100nm transmittance is 10%, the reflectivity is 85%, and good heat reflection and blocking effects can be achieved.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.

Examples

The invention uses high-performance nanometer-scale reflective heat-insulation ceramic material to be added into TPU granules, and prepares the TPU original film with higher heat-insulation performance by an extrusion casting process. Coating acrylic ester pressure-sensitive adhesive on one surface of the TPU original film by using coating equipment through a precise coating process; coating the other side with a coating with a self-repairing function, and respectively compounding a release film and a protective film to prepare the product.

Detailed description of the preferred embodiment 1

A preparation method of a heat reflection TPU paint surface protective film comprises the following steps:

step one, raw material treatment: weighing a certain weight of nano-scale reflective heat-insulating ceramic material and 92A TPU particles, and stirring and mixing;

step two, preparing TPU particles: mixing and melting a nano-scale reflective heat-insulating ceramic material and TPU granules at 116 ℃ by using small granulation equipment, and extruding to prepare functional TPU granules;

step three, preparing a TPU raw film: adding functional TPU granules into a trough by using precision casting equipment, heating by an extruder at the heating temperature of 114 ℃, and extruding and casting to prepare a TPU raw film after melting;

step four, preparing a finished product: coating a high-performance pressure-sensitive adhesive on one surface of the TPU raw film by using a precise coating production line, wherein the production temperature is 86 ℃, the speed is 14m/min, and compounding a PET release film;

coating self-repairing coating on the other side of the TPU film, wherein the production temperature is 92 ℃, the speed is 13m/min, and compounding a PET protective film.

Specific example 2

A preparation method of a heat reflection TPU paint surface protective film comprises the following steps:

step one, raw material treatment: weighing a certain weight of nano-scale reflective heat-insulating ceramic material and 92A TPU particles, and stirring and mixing;

step two, preparing TPU particles: mixing and melting a nano-scale reflective heat-insulating ceramic material and TPU granules at 184 ℃ by using small granulation equipment, and extruding to prepare functional TPU granules;

step three, preparing a TPU raw film: adding functional TPU granules into a trough by using precision casting equipment, heating the granules by an extruder at 186 ℃, and extruding and casting to prepare a TPU raw film after melting;

step four, preparing a finished product: coating a high-performance pressure-sensitive adhesive on one surface of the TPU raw film by using a precise coating production line, wherein the production temperature is 134 ℃, the speed is 16m/min, and compounding a PET release film;

coating self-repairing coating on the other side of the TPU film, wherein the production temperature is 138 ℃, the speed is 17m/min, and compounding a PET protective film.

Specific example 3

A preparation method of a heat reflection TPU paint surface protective film comprises the following steps:

step one, raw material treatment: weighing a certain weight of nano-scale reflective heat-insulating ceramic material and 92A TPU particles, and stirring and mixing;

step two, preparing TPU particles: mixing and melting a nano-scale reflective heat-insulating ceramic material and TPU granules at 166 ℃ by using small granulation equipment, and extruding to prepare functional TPU granules;

step three, preparing a TPU raw film: adding functional TPU granules into a trough by using precision casting equipment, heating the granules by an extruder at the heating temperature of 154 ℃, and extruding and casting the granules to prepare a TPU raw film after the granules are melted;

step four, preparing a finished product: coating a high-performance pressure-sensitive adhesive on one surface of the TPU raw film by using a precise coating production line, wherein the production temperature is 112 ℃, the speed is 15m/min, and compounding a PET release film;

coating self-repairing coating on the other side of the TPU film, wherein the production temperature is 106 ℃, the speed is 14m/min, and compounding a PET protective film.

The product of the invention is measured by a PE950S spectrophotometer, the infrared band 800-2100nm transmittance is 10%, and the reflectance is 85%. The good heat reflection and separation effects are achieved.

The product of the invention can well reflect the heat energy in the air back to the atmosphere, thereby achieving the effect of well blocking the heat from entering the vehicle body. Keeping the temperature in the vehicle low. And the thermal aging phenomenon of the surface of the automobile paint is well prevented, and the service life of the automobile paint is prolonged.

The thermoplastic high polymer material transparent film is used for protecting the automobile paint surface from being damaged and is widely applied to the protection of the automobile surface; it can also be used in furniture, high-speed rail, aircraft and other aviation equipment, world top luxury cruise ship, etc.