阅读说明：本技术 一种具有蓄光效果的热熔胶膜 (Hot melt adhesive film with light storage effect ) 是由 涂航宇 于 2021-02-19 设计创作，主要内容包括：一种具有蓄光效果的热熔胶膜,由以下原料组成：PC树脂、ABS树脂、蓄光粉、助剂；助剂由抗UV剂、主抗氧剂、副抗氧剂按质量比2:1:1的比例组成；主抗氧剂由以下原料组成：抗氧剂168、硬脂酸酰胺、PE蜡、乙酸乙酯、有机锡、亚磷酸酯、气相二氧化硅、膨润土；通过加入蓄光粉,使流延成型的热熔胶膜在具备普通热熔胶膜粘结性能以外还具有蓄光效果,能够适用更多场合,提高热熔胶膜的实用性；同时通过限定主抗氧剂的具体组成,以PE蜡配合气相二氧化硅及膨润土保证蓄光粉可以稳定分散在树脂中且不会沉降,保证最后流延成型的热熔胶膜可以均匀发出光亮；其中有机锡与亚磷酸酯配合,可以稳定蓄光粉在制备及使用过程中的形成,保证热熔胶膜的反光效果。(A hot melt adhesive film with light storage effect is composed of the following raw materials: PC resin, ABS resin, light-storing powder and an auxiliary agent; the auxiliary agent consists of an anti-UV agent, a main antioxidant and an auxiliary antioxidant in a mass ratio of 2:1: 1; the main antioxidant consists of the following raw materials: antioxidant 168, stearic acid amide, PE wax, ethyl acetate, organotin, phosphite ester, fumed silica and bentonite; by adding the light storage powder, the hot melt adhesive film formed by tape casting has a light storage effect besides the bonding performance of a common hot melt adhesive film, can be applied to more occasions, and improves the practicability of the hot melt adhesive film; meanwhile, by limiting the specific composition of the main antioxidant, the light storage powder can be stably dispersed in the resin and can not settle by matching the PE wax with the fumed silica and the bentonite, and the finally cast hot melt adhesive film can uniformly emit light; wherein, the organic tin is matched with the phosphite ester, which can stabilize the formation of the light-storing powder in the preparation and use processes and ensure the light reflection effect of the hot melt adhesive film.)

1. A hot melt adhesive film with light storage effect is characterized in that: the composition is characterized by comprising the following raw materials in parts by weight: 60-70 parts of PC resin, 20-30 parts of ABS resin, 10-20 parts of light-storing powder and 0.1-0.2 part of auxiliary agent;

the auxiliary agent consists of an anti-UV agent, a main antioxidant and an auxiliary antioxidant in a mass ratio of 2:1: 1;

the main antioxidant comprises the following raw materials in parts by weight: 70-80 parts of antioxidant 168, 10-20 parts of stearic acid amide, 15-25 parts of PE wax, 30-40 parts of ethyl acetate, 10-20 parts of organotin, 5-10 parts of phosphite ester, 30-40 parts of fumed silica and 10-20 parts of bentonite;

the preparation method comprises the following steps:

step one, placing PC resin and ABS resin into a rotating speed stirrer, stirring for 20-30min at the rotating speed of 900 plus 1100r/min, then adding light storage powder and various auxiliary agents, and stirring for 20-30min at the rotating speed of 900 plus 1100 r/min;

feeding the stirred raw materials into a granulator for granulation to obtain hot melt adhesive particles;

and step three, transferring the hot melt adhesive particles into a casting machine, and casting into a film to obtain the hot melt adhesive film with the light storage effect.

2. The hot melt adhesive film with light accumulating effect as claimed in claim 1, wherein: the secondary antioxidant is prepared from the following raw materials in parts by weight: 40-50 parts of antioxidant 1076, 20-30 parts of antioxidant DNP, 20-30 parts of silane coupling agent, 35-40 parts of zinc stearate, 10-20 parts of paraffin, 25-30 parts of alkyl modified organosiloxane and 15-25 parts of epoxidized soybean oil.

3. The hot melt adhesive film with light accumulating effect as claimed in claim 1, wherein: the anti-UV agent is prepared from the following raw materials in parts by weight: 50-60 parts of anti-UV agent, 30-40 parts of light stabilizer 744 and 20-30 parts of ultraviolet absorbent UV-9.

4. The hot melt adhesive film with light accumulating effect as claimed in claim 1, wherein: the light-storing powder is alkaline earth metal aluminate powder.

5. The hot melt adhesive film with light accumulating effect as claimed in claim 4, wherein: the light-storing powder comprises 10-20 parts of alkaline earth metal aluminate powder with 50-100 meshes, 20-30 parts of alkaline earth metal aluminate powder with 120-150 meshes, 30-40 parts of alkaline earth metal aluminate powder with 180-220 meshes and 50-60 parts of alkaline earth metal aluminate powder with 250-300 meshes.

6. The hot melt adhesive film with light accumulating effect as claimed in claim 1, wherein: in the first step, before adding the light-storing powder, the light-storing powder and the main antioxidant are stirred for 5-10min in a ceramic container at the rotating speed of 40-50r/min, and then the light-storing powder and the main antioxidant are added into the resin after pre-stirring.

Technical Field

The invention belongs to the field of hot melt adhesive films, and particularly relates to a hot melt adhesive film with a light storage effect.

Background

The hot melt adhesive film is produced by a coating method, the adhesive film needs to be matched with a layer of release material for supporting, and the release material is usually silicone oil paper. Even if some manufacturers call hot melt adhesive bare films, release paper is not attached to products in the market, but the products are produced by a coating method fundamentally, and the paper is rolled up and reused independently by cloth falling in the later stage. Even if the release paper can be used for 3 times, the demand of the release paper is reduced, about 250 tons of waste paper pollution can be generated by one coating machine every year, a large amount of silicone oil, whitening agent and other components are contained, and the production mode of the coating method matched with the release paper needs to be further changed. Whereas cast hot melt adhesive films are certainly the best choice. More importantly, the coating method uses the release paper as a support, and the release paper has thickness errors, so that the requirement on the thickness of the adhesive film is very accurate for customers, the fluctuation of the finished adhesive film is very large, and the finished adhesive film is difficult to control within 5 um. Because the fluctuation range of the release paper itself also exceeds 5um thickness. The influence of the release paper on the thickness of the product can be avoided without adopting a tape casting method for supporting the release paper, and the product with higher requirement on the production precision can be further produced.

Most common hot melt adhesive films in the market are soft rubber (TPU, polyester and the like) serving as main materials, the hardness is low, the mechanical strength is poor, the light storage effect is not achieved, and further improvement is needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a hot melt adhesive film with a light storage effect.

The invention adopts the following technical scheme:

a hot melt adhesive film with a light storage effect is composed of the following raw materials in parts by weight: 60-70 parts of PC resin, 20-30 parts of ABS resin, 10-20 parts of light-storing powder and 0.1-0.2 part of auxiliary agent;

the auxiliary agent consists of an anti-UV agent, a main antioxidant and an auxiliary antioxidant in a mass ratio of 2:1: 1;

the main antioxidant comprises the following raw materials in parts by weight: 70-80 parts of antioxidant 168, 10-20 parts of stearic acid amide, 15-25 parts of PE wax, 30-40 parts of ethyl acetate, 10-20 parts of organotin, 5-10 parts of phosphite ester, 30-40 parts of fumed silica and 10-20 parts of bentonite;

the preparation method comprises the following steps:

step one, placing PC resin and ABS resin into a rotating speed stirrer, stirring for 20-30min at the rotating speed of 900 plus 1100r/min, then adding light storage powder and various auxiliary agents, and stirring for 20-30min at the rotating speed of 900 plus 1100 r/min;

feeding the stirred raw materials into a granulator for granulation to obtain hot melt adhesive particles;

and step three, transferring the hot melt adhesive particles into a casting machine, and casting into a film to obtain the hot melt adhesive film with the light storage effect.

Further, the secondary antioxidant is prepared from the following raw materials in parts by weight: 40-50 parts of antioxidant 1076, 20-30 parts of antioxidant DNP, 20-30 parts of silane coupling agent, 35-40 parts of zinc stearate, 10-20 parts of paraffin, 25-30 parts of alkyl modified organosiloxane and 15-25 parts of epoxidized soybean oil.

Further, the anti-UV agent is composed of the following raw materials in parts by weight: 50-60 parts of anti-UV agent, 30-40 parts of light stabilizer 744 and 20-30 parts of ultraviolet absorbent UV-9.

Further, the light storage powder is alkaline earth metal aluminate powder.

Further, the light storage powder comprises 10-20 parts of 50-100 mesh alkaline earth metal aluminate powder, 20-30 parts of 120-150 mesh alkaline earth metal aluminate powder, 30-40 parts of 180-220 mesh alkaline earth metal aluminate powder and 50-60 parts of 250-300 mesh alkaline earth metal aluminate powder.

Further, in the first step, before adding the light storage powder, the light storage powder and the main antioxidant are stirred for 5-10min in a ceramic container at the rotating speed of 40-50r/min, and then the light storage powder and the main antioxidant are added into the resin after pre-stirring.

As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: by adding the light storage powder, the hot melt adhesive film formed by tape casting has a light storage effect besides the bonding performance of a common hot melt adhesive film, can be applied to more occasions, and improves the practicability of the hot melt adhesive film; meanwhile, by limiting the specific composition of the main antioxidant, the light storage powder can be stably dispersed in the resin and can not settle by matching the PE wax with the fumed silica and the bentonite, and the finally cast hot melt adhesive film can uniformly emit light; wherein, the organic tin is matched with the phosphite ester, which can stabilize the formation of the light-storing powder in the preparation and use processes and ensure the light-reflecting effect of the hot melt adhesive film;

the specific composition of the secondary antioxidant is limited, and the secondary antioxidant is matched with the primary antioxidant and the anti-UV agent, so that the prepared hot melt adhesive film has excellent weather resistance, and the service life of the hot melt adhesive film is ensured, wherein the alkyl modified organosiloxane is matched with other raw materials, so that the prepared hot melt adhesive film is flat, uniform and smooth; the zinc stearate is matched with the paraffin wax, so that other raw materials can be uniformly dispersed, and the light storage effect and the bonding property of the finally formed hot melt adhesive film can be ensured;

the specific composition mesh number of the light storage powder is limited to adjust the brightness of the light storage powder, so that the hot melt adhesive film formed by tape casting can emit soft brightness, and the use of the hot melt adhesive film is stabilized;

through limiting the specific selection of the ultraviolet absorbent, the ultraviolet absorbent 622, the ultraviolet absorbent UV-9 and the light stabilizer 744 are cooperatively matched to absorb ultraviolet rays, stabilize a protective layer, improve the quality of the reflective film and prolong the service life of the reflective film;

before the light storage powder is added, the light storage powder is mixed and stirred with the main antioxidant, so that an isolation layer is formed around the light storage powder, and the light storage powder is prevented from being damaged in the subsequent stirring process to influence the light emitting effect of the hot melt adhesive film.

Detailed Description

The invention is further described below by means of specific embodiments.

A hot melt adhesive film with a light storage effect is composed of the following raw materials in parts by weight: 60-70 parts of PC resin, 20-30 parts of ABS resin, 10-20 parts of light-storing powder and 0.1-0.2 part of auxiliary agent.

The auxiliary agent consists of an anti-UV agent, a main antioxidant and an auxiliary antioxidant according to the mass ratio of 2:1: 1.

The main antioxidant comprises the following raw materials in parts by weight: 70-80 parts of antioxidant 168, 10-20 parts of stearic acid amide, 15-25 parts of PE wax, 30-40 parts of ethyl acetate, 10-20 parts of organotin, 5-10 parts of phosphite ester, 30-40 parts of fumed silica and 10-20 parts of bentonite.

The secondary antioxidant comprises the following raw materials in parts by weight: 40-50 parts of antioxidant 1076, 20-30 parts of antioxidant DNP, 20-30 parts of silane coupling agent, 35-40 parts of zinc stearate, 10-20 parts of paraffin, 25-30 parts of alkyl modified organosiloxane and 15-25 parts of epoxidized soybean oil.

The anti-UV agent consists of the following raw materials in parts by weight: 50-60 parts of anti-UV agent, 30-40 parts of light stabilizer 744 and 20-30 parts of ultraviolet absorbent UV-9.

The light-storing powder is alkaline earth metal aluminate powder, and comprises 10-20 parts of alkaline earth metal aluminate powder with 50-100 meshes, 20-30 parts of alkaline earth metal aluminate powder with 120-150 meshes, 30-40 parts of alkaline earth metal aluminate powder with 180-220 meshes and 50-60 parts of alkaline earth metal aluminate powder with 250-300 meshes.

The preparation method comprises the following steps:

step one, placing PC resin and ABS resin into a rotating speed stirrer, and stirring at the rotating speed of 900 plus 1100r/min for 20-30 min; then adding light storage powder and various auxiliary agents, and stirring at the rotating speed of 900-1100r/min for 20-30 min; wherein, before adding the light-storing powder, the light-storing powder and the main antioxidant are firstly stirred in a ceramic container for 5-10min at the rotating speed of 40-50r/min, and then are added into the resin after pre-stirring

Feeding the stirred raw materials into a granulator for granulation to obtain hot melt adhesive particles;

and step three, transferring the hot melt adhesive particles into a casting machine, and casting into a film to obtain the hot melt adhesive film with the light storage effect.

The preparation method of the light-storing powder comprises the following steps:

weighing 120 parts of strontium oxide, 100 parts of aluminum oxide, 10 parts of holmium oxide, 5 parts of cerium oxide, 3 parts of yttrium oxide, 10 parts of calcium oxide, 2 parts of calcium phosphate, 3 parts of boric acid and 3 parts of boric acid, fully and uniformly mixing, feeding into a kiln, presintering for 3 hours at 1020 ℃ in a reducing atmosphere, cooling to room temperature, and crushing to obtain matrix powder;

step two, adding 100 parts of matrix powder into a mixed solution of 750ml of potassium silicate and 750ml of aluminum phosphate, performing ultrasonic dispersion, soaking for 20min, then performing centrifugal separation on the redundant mixed solution, washing with deionized water, and drying;

and step three, filling the dried matrix powder into an alumina crucible, feeding the alumina crucible into a kiln, calcining the alumina crucible for 3 hours at 1180 ℃ in a reducing atmosphere, cooling the calcined alumina crucible to room temperature, and crushing the calcined alumina crucible to obtain alkaline earth metal aluminate powder.

Example 1

A hot melt adhesive film with a light storage effect is composed of the following raw materials in parts by weight: 60 parts of PC resin, 30 parts of ABS resin, 10 parts of light-storing powder and 0.2 part of auxiliary agent.

The auxiliary agent consists of an anti-UV agent, a main antioxidant and an auxiliary antioxidant according to the mass ratio of 2:1: 1.

The main antioxidant comprises the following raw materials in parts by weight: 70 parts of antioxidant 168, 20 parts of stearic acid amide, 15 parts of PE wax, 40 parts of ethyl acetate, 10 parts of organic tin, 10 parts of phosphite ester, 30 parts of fumed silica and 20 parts of bentonite.

The secondary antioxidant comprises the following raw materials in parts by weight: 40 parts of antioxidant 1076, 30 parts of antioxidant DNP, 20 parts of silane coupling agent, 40 parts of zinc stearate, 10 parts of paraffin, 30 parts of alkyl modified organosiloxane and 15 parts of epoxidized soybean oil.

The anti-UV agent consists of the following raw materials in parts by weight: 50 parts of an anti-UV agent, 40 parts of a light stabilizer 744 and 20 parts of an ultraviolet light absorber UV-9.

The light storage powder is alkaline earth metal aluminate powder and comprises 10 parts of alkaline earth metal aluminate powder with 50-100 meshes, 30 parts of alkaline earth metal aluminate powder with 120-150 meshes, 30 parts of alkaline earth metal aluminate powder with 180-220 meshes and 60 parts of alkaline earth metal aluminate powder with 250-300 meshes.

The preparation method comprises the following steps:

step one, placing PC resin and ABS resin into a rotating speed stirrer, and stirring for 30min at the rotating speed of 900 r/min; then adding light storage powder and various auxiliary agents, and stirring for 30min at the rotating speed of 900 r/min; wherein, before adding the light-storing powder, the light-storing powder and the main antioxidant are firstly stirred in a ceramic container for 10min at the rotating speed of 40r/min, and then are added into the resin after pre-stirring

Feeding the stirred raw materials into a granulator for granulation to obtain hot melt adhesive particles;

and step three, transferring the hot melt adhesive particles into a casting machine, and casting into a film to obtain the hot melt adhesive film with the light storage effect.

Example 2

A hot melt adhesive film with a light storage effect is composed of the following raw materials in parts by weight: 70 parts of PC resin, 20 parts of ABS resin, 20 parts of light-storing powder and 0.1 part of auxiliary agent.

The auxiliary agent consists of an anti-UV agent, a main antioxidant and an auxiliary antioxidant according to the mass ratio of 2:1: 1.

The main antioxidant comprises the following raw materials in parts by weight: 80 parts of antioxidant 168, 10 parts of stearic acid amide, 25 parts of PE wax, 30 parts of ethyl acetate, 20 parts of organic tin, 5 parts of phosphite ester, 40 parts of fumed silica and 10 parts of bentonite.

The secondary antioxidant comprises the following raw materials in parts by weight: 50 parts of antioxidant 1076, 20 parts of antioxidant DNP, 30 parts of silane coupling agent, 35 parts of zinc stearate, 20 parts of paraffin, 25 parts of alkyl modified organosiloxane and 25 parts of epoxidized soybean oil.

The anti-UV agent consists of the following raw materials in parts by weight: 60 parts of an anti-UV agent, 30 parts of a light stabilizer 744 and 20 parts of an ultraviolet light absorber UV-9.

The light storage powder is alkaline earth metal aluminate powder and comprises 20 parts of 50-100 meshes of alkaline earth metal aluminate powder, 20 parts of 120-150 meshes of alkaline earth metal aluminate powder, 40 parts of 180-220 meshes of alkaline earth metal aluminate powder and 50 parts of 250-300 meshes of alkaline earth metal aluminate powder.

The preparation method comprises the following steps:

step one, placing PC resin and ABS resin into a rotary speed stirrer, and stirring for 20min at the rotary speed of 1100 r/min; then adding light storage powder and various auxiliary agents, and stirring at the rotating speed of 1100r/min for 20 min; wherein, before adding the light-storing powder, the light-storing powder and the main antioxidant are firstly stirred for 5min in a ceramic container at the rotating speed of 50r/min, and then are added into the resin after pre-stirring

Feeding the stirred raw materials into a granulator for granulation to obtain hot melt adhesive particles;

step three, transferring the hot melt adhesive particles into a casting machine, and casting into a film to obtain the hot melt adhesive film with the light storage effect

Example 3

A hot melt adhesive film with a light storage effect is composed of the following raw materials in parts by weight: 65 parts of PC resin, 25 parts of ABS resin, 15 parts of light-storing powder and 0.15 part of auxiliary agent.

The auxiliary agent consists of an anti-UV agent, a main antioxidant and an auxiliary antioxidant according to the mass ratio of 2:1: 1.

The main antioxidant comprises the following raw materials in parts by weight: 75 parts of antioxidant 168, 15 parts of stearic acid amide, 20 parts of PE wax, 35 parts of ethyl acetate, 15 parts of organic tin, 8 parts of phosphite ester, 35 parts of fumed silica and 15 parts of bentonite.

The secondary antioxidant comprises the following raw materials in parts by weight: 45 parts of antioxidant 1076, 25 parts of antioxidant DNP, 25 parts of silane coupling agent, 37 parts of zinc stearate, 15 parts of paraffin, 28 parts of alkyl modified organosiloxane and 20 parts of epoxidized soybean oil.

The anti-UV agent consists of the following raw materials in parts by weight: 55 parts of an anti-UV agent, 35 parts of a light stabilizer 744 and 25 parts of an ultraviolet light absorber UV-9.

The light storage powder is alkaline earth metal aluminate powder and comprises 15 parts of 50-100 meshes of alkaline earth metal aluminate powder, 25 parts of 120-150 meshes of alkaline earth metal aluminate powder, 35 parts of 180-220 meshes of alkaline earth metal aluminate powder and 55 parts of 250-300 meshes of alkaline earth metal aluminate powder.

The preparation method comprises the following steps:

step one, placing PC resin and ABS resin into a rotating speed stirrer, and stirring for 25min at the rotating speed of 1000 r/min; then adding light storage powder and various auxiliaries, and stirring at the rotating speed of 1000r/min for 25 min; wherein, before adding the light-storing powder, the light-storing powder and the main antioxidant are firstly stirred for 7min in a ceramic container at the rotating speed of 45r/min, and then are added into the resin after pre-stirring

Feeding the stirred raw materials into a granulator for granulation to obtain hot melt adhesive particles;

step three, transferring the hot melt adhesive particles into a casting machine, and casting into a film to obtain the hot melt adhesive film with the light storage effect

Process test

The hot melt adhesive films obtained in examples 1 to 3 were tested with a red hot melt adhesive film of the prior art, and the following data were obtained:

TABLE 1 test data Table for each example

Item	Tensile breaking strength/MPa	Shore hardness	Resistance to Artificial aging test
				Example 1	128	67	No bubbling, no peeling and no crack after 2000h
Example 2	132	68	No bubbling, no peeling and no crack after 2000h
				Example 3	135	70	No bubbling, no peeling and no crack after 2000h
Comparative example	89	42	No bubbling, no peeling and no crack after 1000h

According to the above tables, the hot melt adhesive film prepared by the method is good in quality, has higher tensile breaking strength and shore hardness, and excellent weather resistance, meets the use requirements of a composite hot melt adhesive film, has a light-emitting effect, can meet more using annular shapes, and improves the practicability of the hot melt adhesive film.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.