阅读说明：本技术 一种运动滑板及其生产方法 (Sport skateboard and production method thereof ) 是由 杨林 吕兆轩 徐礼斌 于 2020-08-04 设计创作，主要内容包括：本发明公开了一种运动滑板及其生产方法,所述滑板为五层结构,包括从上到下依次连接的面板层、玻纤布层、内芯层、玻纤布层和底板层,五层结构通过组坯胶合制成成品。本发明运动滑板结构简单,通过玻纤布层作为粘结层,将面板层、内芯层和底板层相互连接,采用可回收再利用的塑性塑料、树脂等复合材料,绿色环保,节约木材,利用改性上浆剂中的功能基团增强了界面性能,提高了层间剪切强度,从而令滑板在极限运动中承受更大的应力下避免开裂、开胶,提高使用性能,延长使用寿命长。(The invention discloses a sports skateboard and a production method thereof, wherein the skateboard is of a five-layer structure and comprises a panel layer, a glass fiber cloth layer, an inner core layer, a glass fiber cloth layer and a bottom board layer which are sequentially connected from top to bottom, and the five-layer structure is manufactured into a finished product through assembly and gluing. The sports sliding plate is simple in structure, the glass fiber cloth layer is used as the bonding layer to connect the panel layer, the inner core layer and the bottom plate layer, recyclable composite materials such as plastic plastics and resin are adopted, the sports sliding plate is green and environment-friendly, wood is saved, the interface performance is enhanced by using the functional groups in the modified sizing agent, the interlaminar shear strength is improved, and therefore the sliding plate can be prevented from cracking and glue failure under larger stress in extreme motion, the service performance is improved, and the service life is prolonged.)

1. The sports skateboard is characterized by being of a five-layer structure and comprising a panel layer, a glass fiber cloth layer, an inner core layer, a glass fiber cloth layer and a bottom board layer which are sequentially connected from top to bottom.

2. The skateboard of claim 1 wherein the panel layer is formed by injection molding a material selected from polycarbonate or high density polyethylene.

3. The sports skateboard of claim 1, wherein the inner core layer is selected from a polyurethane foam board, a polyvinyl chloride foam board, or a polystyrene foam board.

4. The skateboard of claim 1 wherein the floor layer is injection molded from a material selected from the group consisting of ethylene vinyl acetate or cross-linked polyethylene.

5. The sports skateboard of claim 1, wherein the glass fiber cloth layer is prepared by sizing glass fiber cloth with a modified sizing agent, and the specific steps are as follows:

(1) mixing isophorone diisocyanate and adipic acid-1, 4-butanediol in proportion, adding dibutyltin dilaurate and stannous octoate, heating to 80-90 ℃ under the atmosphere of nitrogen, reacting for 2-3 hours, cooling to 50-60 ℃, adding a dimethylformamide solution of 2, 2-dimethylolpropionic acid, heating to 65-75 ℃ for reacting for 1 hour, adding epoxy resin, reacting for 4-6 hours under heat preservation, cooling the obtained product to normal temperature, reducing the viscosity by using acetone, adding alkali for neutralization, adding water for dispersion, adding a diethylenetriamine aqueous solution after forming a uniform emulsion, carrying out reduced pressure distillation to remove acetone after carrying out chain extension for 20-30 minutes, and filtering to obtain a modified sizing agent;

(2) and introducing the glass fiber cloth into a sizing machine, leading the glass fiber cloth to pass through a size tank, a squeezing roller and a drying cylinder by a yarn guide roller, and uniformly sizing the modified sizing agent to obtain the glass fiber cloth layer.

6. The sports skateboard of claim 5, wherein the raw materials in step 1 are in parts by weight: 90-100 parts of isophorone diisocyanate, 40-50 parts of adipic acid-1, 4-butanediol, 12-15 parts of dibutyltin dilaurate, 8-10 parts of stannous octoate, 2-4 parts of 2, 2-dimethylolpropionic acid, 35-45 parts of dimethylformamide, 16-20 parts of epoxy resin and 5-8 parts of diethylenetriamine.

7. The skateboard of claim 5, wherein the sizing rate is controlled to be 3-5 m/min and the drying temperature is controlled to be 90-110 ℃ during the sizing process in step 2.

8. A method for producing a sports skateboard according to any of claims 1-7, characterized in that it comprises the following steps:

(1) the panel layer, the glass fiber cloth layer, the inner core layer and the bottom plate layer are respectively shaped by hydraulic pressure through a die;

(2) assembling according to the upper and lower five-layer structure, coating adhesive resin between layers for gluing, feeding the obtained plywood into a mold, molding at 130-150 deg.C under 5-8MPa for 1-2 hr, demolding, standing, and cooling to room temperature;

(3) and (4) sawing edges, drilling holes and finely grinding the semi-finished sliding plate to obtain the finished sports sliding plate.

Technical Field

The invention belongs to the technical field of slide plate production, and particularly relates to a sports slide plate and a production method thereof.

Background

The skateboard exercise belongs to extreme exercise, has good pleasure, interest, stimulation and appreciation, and is popular among teenagers and adults. In countries in europe and america and developing countries, the participation in skateboard sports has become the most popular and lasting fashion in urban youth, and thus the demand and daily increase of skateboards are feared.

At present, the sport skateboard on the market is basically made of wood plywood materials or made of wood materials and short fiber reinforced plastic composite materials through bonding, the manufactured product is relatively complex in structure, meanwhile, the surface of the wood material is inert due to few active groups, and is not easy to combine with fibers and plastic materials on an interface, so that the performance of the interface is reduced, and therefore, the sport skateboard has the problems of easiness in glue opening, easiness in fracture, low fatigue strength and the like in use. In addition, the sport skateboard made of wood is not energy-saving and environment-friendly and is not environment-friendly.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a sports skateboard and a production method thereof.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a sport skateboard, the slide is five layer structures, includes panel layer, glass fiber cloth layer, interior sandwich layer, glass fiber cloth layer and the bottom plate layer that from the top down connects gradually.

Further, the panel layer is made of polycarbonate or high-density polyethylene materials through injection molding.

Further, the inner core layer is selected from a polyurethane foam board, a polyvinyl chloride foam board or a polystyrene foam board.

Further, the bottom plate layer is made of ethylene-vinyl acetate copolymer or cross-linked polyethylene materials through injection molding.

Further, the glass fiber cloth layer is prepared by sizing glass fiber cloth by a modified sizing agent, and the method comprises the following specific steps:

(1) mixing isophorone diisocyanate and adipic acid-1, 4-butanediol in proportion, adding dibutyltin dilaurate and stannous octoate, heating to 80-90 ℃ under the atmosphere of nitrogen, reacting for 2-3 hours, cooling to 50-60 ℃, adding a dimethylformamide solution of 2, 2-dimethylolpropionic acid, heating to 65-75 ℃ for reacting for 1 hour, adding epoxy resin, reacting for 4-6 hours under heat preservation, cooling the obtained product to normal temperature, reducing the viscosity by using acetone, adding alkali for neutralization, adding water for dispersion, adding a diethylenetriamine aqueous solution after forming a uniform emulsion, carrying out reduced pressure distillation to remove acetone after carrying out chain extension for 20-30 minutes, and filtering to obtain a modified sizing agent;

(2) and introducing the glass fiber cloth into a sizing machine, leading the glass fiber cloth to pass through a size tank, a squeezing roller and a drying cylinder by a yarn guide roller, and uniformly sizing the modified sizing agent to obtain the glass fiber cloth layer.

Preferably, the weight parts of the raw materials in the step 1 are as follows: 90-100 parts of isophorone diisocyanate, 40-50 parts of adipic acid-1, 4-butanediol, 12-15 parts of dibutyltin dilaurate, 8-10 parts of stannous octoate, 2-4 parts of 2, 2-dimethylolpropionic acid, 35-45 parts of dimethylformamide, 16-20 parts of epoxy resin and 5-8 parts of diethylenetriamine.

Preferably, the sizing rate is controlled to be 3-5 m/min and the drying temperature is controlled to be 90-110 ℃ in the sizing process in the step 2.

The invention also provides a production method of the sports skateboard, which comprises the following steps:

(1) the panel layer, the glass fiber cloth layer, the inner core layer and the bottom plate layer are respectively shaped by hydraulic pressure through a die;

(2) assembling according to the upper and lower five-layer structure, coating adhesive resin between layers for gluing, feeding the obtained plywood into a mold, molding at 130-150 deg.C under 5-8MPa for 1-2 hr, demolding, standing, and cooling to room temperature;

(3) and (4) sawing edges, drilling holes and finely grinding the semi-finished sliding plate to obtain the finished sports sliding plate.

The invention has the advantages that:

the sports skateboard has simple structure, adopts recyclable composite materials such as plastic plastics, resin and the like, is green and environment-friendly, saves wood, has ideal mechanical strength, is not easy to break and split, and has long service life.

The invention uses the glass fiber cloth layer as the bonding layer to connect the panel layer, the inner core layer and the bottom plate layer with each other, in order to improve the bonding degree between the glass fiber cloth layer and other layers, the adhesive viscosity and the interface layer are improved by the modified sizing agent, wherein the modified sizing agent contains a large amount of epoxy groups compatible with the surface of the glass fiber cloth and functional groups such as carbamate compatible with cyanate ester resin, which is helpful for eliminating residual thermal stress and defects between the fiber of the glass fiber cloth and the plastic resin interface and constructing a double-compatible interface layer, thereby forming an interface transition layer for effectively transferring stress between the glass fiber cloth and the plastic resin matrixes of the surface plate layer, the inner core layer and the bottom plate layer by the modified sizing agent, enhancing the interface performance, improving the interlaminar shear strength, therefore, the sliding plate can be prevented from cracking and glue splitting under the condition of bearing larger stress in extreme movement, and the service performance is improved.

Detailed Description

The technical scheme of the invention is further explained by combining the specific examples as follows: