阅读说明：本技术 一种环保型热熔胶片及其制备方法 (Environment-friendly hot-melt adhesive sheet and preparation method thereof ) 是由 杜飞虎 于 2019-12-18 设计创作，主要内容包括：本发明涉及一种环保型热熔胶片及其制备方法,环保型热熔胶片的原料包含如下重量份的组份：环烷油20-35份、高分子聚合物10-30份、EMA树脂40-50份、竹质活性炭粉8-12份、氟硅橡胶3-6份、丁基橡胶10-15份、紫外光吸收剂UV-531 2-4份、液体石蜡4-8份、有机硅1-3份、酯交换促进剂0.02-0.03份、抗氧剂0.1-0.3份。相对现有技术,本发明的环保型热熔胶片粘接度强和耐寒性高,还容易吸收冲击力,也可用作抗冲击改性剂；更具柔韧性,提升无纺布应用的舒适性。(The invention relates to an environment-friendly hot melt adhesive sheet and a preparation method thereof, wherein the environment-friendly hot melt adhesive sheet comprises the following raw materials in parts by weight: 20-35 parts of naphthenic oil, 10-30 parts of high molecular polymer, 40-50 parts of EMA resin, 8-12 parts of bamboo activated carbon powder, 3-6 parts of fluorosilicone rubber, 10-15 parts of butyl rubber, UV-5312-4 parts of ultraviolet absorber, 4-8 parts of liquid paraffin, 1-3 parts of organic silicon, 0.02-0.03 part of ester exchange accelerator and 0.1-0.3 part of antioxidant. Compared with the prior art, the environment-friendly hot melt adhesive sheet has strong bonding degree and high cold resistance, is easy to absorb impact force, and can also be used as an impact modifier; has more flexibility and improves the comfort of the non-woven fabric application.)

1. The environment-friendly hot melt adhesive sheet is characterized by comprising the following raw materials in parts by weight: 20-35 parts of naphthenic oil, 10-30 parts of high molecular polymer, 40-50 parts of EMA resin, 8-12 parts of bamboo activated carbon powder, 3-6 parts of fluorosilicone rubber, 10-15 parts of butyl rubber, UV-5312-4 parts of ultraviolet absorber, 4-8 parts of liquid paraffin, 1-3 parts of organic silicon, 0.02-0.03 part of ester exchange accelerator and 0.1-0.3 part of antioxidant.

2. The low-temperature-resistant environment-friendly hot melt adhesive sheet according to claim 1, wherein the raw materials comprise the following components in parts by weight: 28 parts of naphthenic oil, 18 parts of high molecular polymer, 45 parts of EMA resin, 10 parts of bamboo activated carbon powder, 3 parts of fluorosilicone rubber, 12 parts of butyl rubber, 12 parts of ultraviolet light absorber UV-5312 parts, 4 parts of liquid paraffin, 2 parts of organic silicon, 0.02 part of ester exchange accelerator and 0.2 part of antioxidant.

3. The low temperature resistant environment-friendly hot melt adhesive sheet according to claim 1, wherein the high molecular polymer is one or more of SBS, SIS and SEBS.

4. The low-temperature-resistant environment-friendly hot melt adhesive sheet as claimed in claim 1, wherein the bamboo activated carbon powder is carbonized at high temperature for 7 days at 1000 ℃, and then is subjected to high-temperature and high-pressure activation treatment to make the carbon molecules fine and porous, and the sum of the surface areas of the gaps of each gram of bamboo activated carbon powder is not less than 350m²。

5. The low temperature resistant environment friendly hot melt adhesive sheet according to claim 1, wherein the ester exchange accelerator is tetrabutyl titanate.

6. The low temperature resistant environment friendly hot melt adhesive sheet according to claim 1, wherein the antioxidant is n-octadecyl propionate or triisotridecyl phosphite.

7. The preparation method of the environment-friendly hot melt adhesive sheet is characterized by comprising the following steps:

placing 20-35 parts of naphthenic oil, 10-30 parts of high molecular polymer, 40-50 parts of EMA resin, 8-12 parts of bamboo activated carbon powder, 3-6 parts of fluorosilicone rubber, 10-15 parts of butyl rubber, 4-4 parts of ultraviolet light absorber UV-5312, 4-8 parts of liquid paraffin, 1-3 parts of organic silicon, 0.02-0.03 part of ester exchange accelerator and 0.1-0.3 part of antioxidant into a high-speed and low-speed stirrer, stirring at high speed for 10-20 minutes, and heating to 110-120 ℃ in the high-speed and low-speed stirrer to obtain the hot melt adhesive;

and (3) rotating the high-speed stirrer and the low-speed stirrer at a low speed, and extruding the obtained hot melt adhesive through a high-temperature casting machine to form a hot melt adhesive sheet.

Technical Field

The invention relates to the technical field of hot melt adhesives, in particular to an environment-friendly hot melt adhesive sheet and a preparation method thereof.

Background

Non-woven fabrics often need the hot melt adhesive to connect, and the hot melt adhesive needs direct contact human body to use. At present, natural and environment-friendly concepts are provided in the industry, so that some natural materials are introduced in the non-woven fabric industry to prepare the hot melt adhesive.

At present, the general hot melt adhesive in the market mainly takes naphthenic oil, high molecular polymer, antioxidant, tackifying resin and auxiliary resin as basic components, and the general hot melt adhesive can meet the bonding of most materials when used on disposable sanitary products, but the prepared bamboo charcoal fiber has low bonding strength and poor cold resistance; poor low-temperature forming.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the invention aims to provide an environment-friendly hot melt adhesive sheet which is high in bonding degree, high in cold resistance and convenient to form at low temperature and a preparation method thereof.

The technical scheme for solving the technical problems is as follows: an environment-friendly hot melt adhesive sheet comprises the following raw materials in parts by weight: 20-35 parts of naphthenic oil, 10-30 parts of high molecular polymer, 40-50 parts of EMA resin, 8-12 parts of bamboo activated carbon powder, 3-6 parts of fluorosilicone rubber, 10-15 parts of butyl rubber, UV-5312-4 parts of ultraviolet absorber, 4-8 parts of liquid paraffin, 1-3 parts of organic silicon, 0.02-0.03 part of ester exchange accelerator and 0.1-0.3 part of antioxidant.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, the raw materials comprise the following components in parts by weight: 28 parts of naphthenic oil, 18 parts of high molecular polymer, 45 parts of EMA resin, 10 parts of bamboo activated carbon powder, 3 parts of fluorosilicone rubber, 12 parts of butyl rubber, 12 parts of ultraviolet light absorber UV-5312 parts, 4 parts of liquid paraffin, 2 parts of organic silicon, 0.02 part of ester exchange accelerator and 0.2 part of antioxidant.

Further, the high molecular polymer is one or more of SBS, SIS and SEBS.

Further, the bamboo activated carbon powder is carbonized at high temperature for 7 days, the carbonization temperature is controlled at 1000 ℃, and then the bamboo activated carbon powder is activated at high temperature and high pressure, so that the carbon molecules are fine and porous, and the sum of the surface areas of gaps of each gram of bamboo activated carbon powder is more than or equal to 350m²。

Further, the transesterification accelerator is tetrabutyl titanate.

The antioxidant is n-octadecyl propionate or triisotridecyl phosphite.

The invention has the beneficial effects that: the environment-friendly hot-melt adhesive sheet has strong bonding degree and high cold resistance, is easy to absorb impact force, and can also be used as an impact modifier; the environment-friendly hot-melt adhesive sheet has higher flexibility through the interaction of the liquid paraffin and the organic silicon, and the comfort of the application of the non-woven fabric is improved; residual dirt on the non-woven fabric can be removed; meanwhile, the efficiency is high, and the production cost is reduced; can effectively reduce the preparation temperature and realize low-temperature molding.

Another technical solution of the present invention for solving the above technical problems is as follows: a preparation method of an environment-friendly hot melt adhesive sheet comprises the following steps:

placing 20-35 parts of naphthenic oil, 10-30 parts of high molecular polymer, 40-50 parts of EMA resin, 8-12 parts of bamboo activated carbon powder, 3-6 parts of fluorosilicone rubber, 10-15 parts of butyl rubber, 4-4 parts of ultraviolet light absorber UV-5312, 4-8 parts of liquid paraffin, 1-3 parts of organic silicon, 0.02-0.03 part of ester exchange accelerator and 0.1-0.3 part of antioxidant into a high-speed and low-speed stirrer, stirring at high speed for 10-20 minutes, and heating to 110-120 ℃ in the high-speed and low-speed stirrer to obtain the hot melt adhesive;

and (3) rotating the high-speed stirrer and the low-speed stirrer at a low speed, and extruding the obtained hot melt adhesive through a high-temperature casting machine to form a hot melt adhesive sheet.

The invention has the beneficial effects that: the environment-friendly hot-melt adhesive sheet has strong bonding degree and high cold resistance, is easy to absorb impact force, and can also be used as an impact modifier; the environment-friendly hot-melt adhesive sheet has higher flexibility through the interaction of the liquid paraffin and the organic silicon, and the comfort of the application of the non-woven fabric is improved; residual dirt on the non-woven fabric can be removed; meanwhile, the efficiency is high, and the production cost is reduced; the preparation temperature can be effectively reduced, and low-temperature molding is realized; the fluorosilicone rubber, the butyl rubber, the ultraviolet light absorber UV-531 and the antioxidant are matched, so that the aging resistance can be improved in an all-round manner.

Detailed Description

The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.