CN110918429A

CN110918429A - Construction method for improving collision avoidance capability of automobile

Info

Publication number: CN110918429A
Application number: CN201911260109.8A
Authority: CN
Inventors: 周诗敏; 朱凯立; 雷向阳
Original assignee: Casley (shanghai) New Materials Co Ltd
Current assignee: Casley (shanghai) New Materials Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-03-27

Abstract

The invention discloses a construction method for improving the anti-collision capacity of an automobile, wherein an anti-explosion material with yellowing resistance and containing an isocyanate nano structure is sprayed on the automobile, such as a large surrounding part or an automobile body paint surface panel part, an automobile body structural part and other important parts.

Description

Construction method for improving collision avoidance capability of automobile

Technical Field

The invention relates to the field of automobile anticollision, in particular to a construction method for improving the automobile anticollision capacity.

Background

With the increasing economic strength of the country, people on the land in China are increasingly abundant, and the road is wider. People have higher and higher requirements on traveling. Automobiles are also becoming more and more popular as a tool for mass travel. Automobiles have been in the lives of people very early. The problem that the safe entry of traffic to every home must be straight follows. Human life is valuable. With the development of science and technology, the development of travel safety is the ultimate approach explored by scientists.

In fact, automobiles are exclusively shared by the nobody, increasingly turning to millions of households. The structure of automobiles is becoming more lightweight. The price is changed from expensive to cheaper and cheaper. For the working on protection, a lot of shrinkage is naturally generated. Some host factories have carelessly stated that some automobile models are compressed to be very flat after being collided with an automobile accident and connected with an engine part because the automobile models are designed to absorb energy. In practice, the best energy absorption should be the best protection by rebound to the original state after impact, rather than hitting very flat, which is a dangerous limit and the deformation exceeds the limit which can be tolerated by the existing materials.

Disclosure of Invention

The invention aims to solve the technical problem of a construction method for improving the automobile anti-collision capacity, and the anti-explosion material which is developed by the department of China and is yellowing-resistant and contains the isocyanate nano-structure is used for spraying important protection parts or spraying the whole automobile, so that the integral protection capacity of the automobile is improved.

The invention is realized by the following technical scheme: a construction method for improving the anti-collision capability of an automobile is characterized in that an anti-explosion material with yellowing resistance and an isocyanate nanostructure is sprayed on the automobile;

when the paint is sprayed on a large surrounding part or a paint surface panel part of a vehicle body, the specific spraying method comprises the following steps:

firstly, polishing surface paint, polishing the surface paint surface by using abrasive paper, a polishing wheel or a sand blasting process to a certain rough surface, and cleaning surface dust to prepare for the next step;

secondly, after the raw material is polished into a rough surface, spraying a layer of primer on the rough surface;

thirdly, spraying a primer, and after drying, spraying an anti-yellowing explosion-proof material containing an isocyanate nano structure;

fourthly, designing and constructing a thicker nano explosion-proof material on the impacted surface, spraying the thinner nano explosion-proof material on the other surface which is not impacted, and integrally spraying;

when spraying on the vehicle body structural member, the specific spraying method comprises the following steps:

cleaning a structural member of a vehicle body by using different surface treatments such as polishing or sand blasting, wherein the surface of the structural member is required to be clean and oil stain and rust dust are avoided;

secondly, brushing a layer of primer on the polished position;

fourthly, the part bearing larger force can be sprayed with nanometer explosion-proof materials with thicker thickness, and the part bearing smaller force can reduce the thickness of touch coating, but the whole spraying is required.

As a preferred technical scheme, a large surrounding part or a vehicle body paint surface panel component or a vehicle body structural component is sprayed with a yellowing-resistant isocyanate-containing nano structure;

and when spraying, taking the prepared anti-yellowing explosion-proof material A component and B component containing the isocyanate nano structure. The coating is assembled to a Gureick spraying H-XP3 device, and A, B components are sprayed by the device, so that the anti-explosion material with the yellowing resistance and the isocyanate nano structure can be integrally formed;

during spraying, in order to improve the deformation resistance and the protection effect, an explosion-proof material needs to be sprayed on the surface of the whole vehicle body structural part, screws need to be left and screwed or the parts need to be exposed, adhesive paper or other materials are made in advance to block the corresponding positions, and after the spraying is finished, the redundant parts are cut off by using a sharp blade.

Preferably, the primer is an epoxy primer or a polyurethane primer.

The invention has the beneficial effects that: the anti-explosion material with the yellowing resistance and the isocyanate nano structure is sprayed on vehicles, such as large surrounding parts or paint surface panel parts of vehicle bodies, vehicle body structural parts and other important parts, and has a nano-scale net structure, strong bond energy, and is difficult to break compared with other materials due to the adoption of the anti-explosion material with the yellowing resistance and the isocyanate nano structure, so that the anti-explosion material has an obvious effect on protecting various materials.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The car is divided into several easily damaged parts:

the paint surface plate part of the large surrounding part or the vehicle body. This is the higher portion of the vulnerability profile.

And secondly, the automobile body structure is formed.

And thirdly, other parts needing protection.

The large envelope mainly consists of: automobile front bumper, rear bumper, footboard, bottom shield. The partial enclosure also contains a tail.

The construction method of the large-enclosure and vehicle body vehicle paint surface plate comprises the following steps:

taking a component A and a component B of an anti-yellowing isocyanate nanostructure-containing explosion-proof material which are prepared in advance. Was fitted to a curek spray H-XP3 apparatus, with which A, B two-component spray was applied.

Firstly, polishing surface paint. And (3) polishing the surface paint surface by using sand paper, a polishing wheel or sand blasting and the like to a certain rough surface, and cleaning surface dust to prepare for the next step. The rough surface is specially polished to improve the bonding force. 50, 60, 80, 100, 120, 150, 180, 220, 280, 320, 400, 500, 600 mesh. Preferably, coarser sandpaper, grinding wheels or quartz sand is selected.

In order to improve the binding force, a layer of primer, preferably epoxy primer or polyurethane primer, can be brushed.

After the primer is coated and dried, the anti-yellowing explosion-proof material containing the isocyanate nano structure can be sprayed. The anti-explosion material containing the isocyanate nano structure can be integrally formed due to yellowing resistance. When a single large surrounding part or a paint surface plate part of a vehicle body is sprayed, in order to improve the deformation resistance and the protection effect, an explosion-proof material needs to be sprayed on the surface of the whole plate part, and screws need to be screwed or the parts need to be exposed. And sticking adhesive paper or other materials to block the corresponding position in advance. After the spraying was completed, the excess was cut off with a sharp blade.

Sometimes for saving materials and at the same time achieving the purpose of protection: the impacted surface can be designed and constructed with thicker nanometer explosion-proof material, and the other surface which is not impacted can be sprayed with thinner nanometer explosion-proof material. But should be sprayed in its entirety.

The construction method of the vehicle body structural member comprises the following steps:

and cleaning the vehicle body structural part by different surface treatments such as grinding or sand blasting. The structural member should ensure a clean surface without oil, dirt, rust, dust, etc.

In order to improve the bonding force between the vehicle body structural part and the anti-yellowing isocyanate nanostructure-containing explosion-proof material, a layer of primer is coated, and preferably epoxy primer or polyurethane primer.

After the primer is coated and dried, the anti-yellowing explosion-proof material containing the isocyanate nano structure can be sprayed. The anti-explosion material containing the isocyanate nano structure can be integrally formed due to yellowing resistance. During spraying, in order to improve the deformation resistance and the protection effect, an explosion-proof material needs to be sprayed on the surface of the whole vehicle body structural part, and screws need to be screwed or exposed. And sticking adhesive paper or other materials to block the corresponding position in advance. After the spraying was completed, the excess was cut off with a sharp blade.

The part bearing larger force can be sprayed with nanometer explosion-proof material with thicker thickness, and the part bearing smaller force can reduce the thickness of collision coating. But should be sprayed in its entirety.

Other parts to be protected. Such as a fuel tank, etc. The oil tank belongs to a flammable and explosive component and is an important protection part of an anti-yellowing anti-explosion material containing an isocyanate nano structure.

The construction method comprises the following steps:

through surface treatment, the surface of the oil tank is cleaned, and oil stain, rust, dust and the like are prevented.

After the primer is coated and dried, the anti-yellowing explosion-proof material containing the isocyanate nano structure can be sprayed. The anti-explosion material containing the isocyanate nano structure can be integrally formed due to yellowing resistance. When spraying, in order to improve the anti-deformation capability and the protection effect, an anti-explosion material needs to be sprayed on the whole surface of the oil tank, and screws need to be screwed or exposed. And sticking adhesive paper or other materials to block the corresponding position in advance. After the spraying was completed, the excess was cut off with a sharp blade.

The oil tank is coated by the anti-yellowing explosion-proof material containing the isocyanate nano structure.

The anti-yellowing explosion-proof material containing isocyanate nano-structure is another invention patent applied by the company, the application number is 201910599797.4, and the following components are briefly introduced as follows:

the catalyst mainly comprises isocyanate and polycarbonate polyol or polyether polyol, wherein the isocyanate reacts with the polycarbonate polyol or the polyether polyol to form carbamido, and dibutyltin dimaleate or dibutyltin sulfate or dibutyltin dilaurate is adopted as the catalyst;

the auxiliary materials comprise an organic catalyst, amino-terminated polyether polyol, a flame retardant, a plasticizer, a diamine chain extender, an antioxidant, a flatting agent, a dispersing agent, a coupling agent, an anti-settling agent, an antistatic agent and nano rutile titanium dioxide.

The method specifically comprises the following steps:

step one, preparing a prepolymer of the component A;

(1) fully mixing diisocyanate, an organic catalyst and sodium bicarbonate in advance, and charging nitrogen for storage;

(2) the polyether polyol and polycarbonate polyol are fully mixed and vacuumized and dehydrated at the temperature of 115 ℃, and when the content is lower than 0.1 percent. Cooling to 80 ℃, then adding the mixture while stirring, controlling the temperature at 80 ℃ and reacting for 6 hours to obtain a component A;

step two, preparation of the component B:

adding amino-terminated polyether polyol, diamine chain extender, antioxidant, flatting agent, dispersant, coupling agent, antistatic agent fatty alcohol-polyoxyethylene ether, phosphorus-containing flame retardant, plasticizer and other components into a stirring kettle in sequence, fully stirring, finally adding nano rutile type titanium dioxide, fully stirring, adding the medicament into each batch, and stirring for at least 30 minutes.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. A construction method for improving the anti-collision capacity of an automobile is characterized by comprising the following steps: spraying an anti-explosion material with yellowing resistance and an isocyanate nanostructure on a vehicle;

secondly, brushing a layer of primer on the polished position;

2. The construction method for improving the anti-collision capability of the automobile according to claim 1, wherein: spraying a yellowing-resistant isocyanate-containing nano structure on a large surrounding part or a paint surface panel component of a vehicle body or a structural component of the vehicle body;

3. The construction method for improving the anti-collision capability of the automobile according to claim 1, wherein: the primer is epoxy primer or polyurethane primer.