阅读说明：本技术 具有微胀气感超柔软的降噪耳塞及其制备方法 (Noise reduction earplug with micro-flatulence and super-soft feeling and preparation method thereof ) 是由 崔玉志 孙清峰 郭勇生 燕杰善 刘芳 于 2020-12-30 设计创作，主要内容包括：本发明涉及一种具有微胀气感超柔软的降噪耳塞及其制备方法,属于聚氨酯技术领域。本发明所述的具有微胀气感超柔软的降噪耳塞,由A组分和B组分组成,A组分和B组分质量比为100：33-35；A组分包括以下质量份数的原料：聚醚多元醇A40-60份；聚醚多元醇B20-40份；聚醚多元醇C 0-20份；泡沫稳定剂0.5-1份；交联剂0.5-1.5份；催化剂1.0-1.5份；发泡剂0.3-0.5份；开孔剂0-5份；B组分为改性MDI。本发明所述的耳塞,具有微胀气感,柔软度高,具有降噪、耐用的功效；本发明同时提供了简单易行的制备方法。(The invention relates to a noise reduction earplug with micro-flatulence and super-softness and a preparation method thereof, belonging to the technical field of polyurethane. The invention relates to a noise reduction earplug with micro-flatulence and super-soft feeling, which consists of a component A and a component B, wherein the mass ratio of the component A to the component B is 100: 33-35; the component A comprises the following raw materials in parts by mass: polyether polyol A40-60 parts; polyether polyol B20-40 parts; 0-20 parts of polyether polyol C; 0.5-1 part of foam stabilizer; 0.5-1.5 parts of a crosslinking agent; 1.0-1.5 parts of a catalyst; 0.3-0.5 part of foaming agent; 0-5 parts of a pore forming agent; the component B is modified MDI. The earplug has the advantages of slight flatulence, high softness, noise reduction and durability; the invention also provides a simple and feasible preparation method.)

1. A noise reduction earplug with micro-flatulence sense and super-soft performance is characterized in that: the paint consists of a component A and a component B, wherein the mass ratio of the component A to the component B is 100: 33-35;

the component A comprises the following raw materials in parts by mass:

the component B is modified MDI;

the polyether polyol A is the flatulence polyether polyol with the functionality of 3, the hydroxyl value of 30-100mgKOH/g, the acid value of less than or equal to 0.8mgKOH/g and the number average molecular weight of 4500-;

the polyether polyol B is polyether polyol with the functionality of 3 and the hydroxyl value of 240 mgKOH/g;

the polyether polyol C is slow rebound polyether polyol with a hydroxyl value of 200 mgKOH/g.

2. The noise reducing earplug with a micro-bloating feeling and ultra-softness as set forth in claim 1, wherein: the foam stabilizer is a mixture of a low-fogging polysiloxane-oxyalkylene block copolymer and slow-rebound silicone oil.

3. The noise reducing earplug with a micro-bloating feeling and ultra-softness as set forth in claim 1, wherein: the cross-linking agent is one or two of triethanolamine or diethanolamine.

4. The noise reducing earplug with a micro-bloating feeling and ultra-softness as set forth in claim 1, wherein: the catalyst is a low atomization reaction type catalyst.

5. The noise reducing earplug with a micro-bloating feeling and ultra-softness as set forth in claim 1, wherein: the foaming agent is water.

6. The noise reducing earplug with a micro-bloating feeling and ultra-softness as set forth in claim 1, wherein: the cell opener is INOVOL S1900.

7. The noise reducing earplug with a micro-bloating feeling and ultra-softness as set forth in claim 1, wherein: the NCO mass content of the modified MDI is 25.5-27%.

8. A method of making a soft noise reducing earplug of any of claims 1-7, wherein the method comprises: the method comprises the following steps:

(1) preparation of component A:

mixing polyether polyol A, polyether polyol B, polyether polyol C, a foam stabilizer, a crosslinking agent, a catalyst, a foaming agent and a cell opening agent at normal temperature at the rotation speed of 50-60 revolutions per minute, and stirring for 0.6-1 hour to obtain a component A;

(2) preparation of the product:

mixing the component A and the component B according to the mass ratio of 100: 33-100: 35, mixing, injection molding, sealing, opening the mold for 6-9 minutes to obtain the target product.

Technical Field

The invention relates to a noise reduction earplug with micro-flatulence and super-softness and a preparation method thereof, belonging to the technical field of polyurethane.

Background

The development of the industry has led to social progress and also has caused certain problems, namely noise is a byproduct of the development of the industry. In general, continuous noise up to 40dB greater can affect 10% of people; 70dB may affect 50%; while the sudden movement noise can wake up 10% of people at 40dB and 70 at 60 dB. The long-term sleep disturbance can cause insomnia, fatigue, weakness and memory deterioration, so as to generate neurasthenia syndrome and the like. In a high-noise environment, the incidence rate of the disease can reach more than 50% -60%. To create a good rest and sleep, the noise must not exceed 50bB, respectively.

CN 110872371A proposes a preparation method of a slow-rebound sponge earplug adopting Z15 sound-absorbing particles, and the catalyst adopts a tin catalyst, belonging to a metal catalyst. The long-time wearing of the glasses easily causes inflammation, causes abnormal blood flow and causes hearing loss. Meanwhile, dichloromethane is selected as a physical foaming agent, so that certain environmental pollution is caused.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects in the prior art, and provide the noise reduction earplug with micro-flatulence and super-softness, which has the advantages of micro-flatulence, high softness, noise reduction and durability; the invention also provides a simple and feasible preparation method.

The invention relates to a noise reduction earplug with micro-flatulence and super-soft feeling, which consists of a component A and a component B, wherein the mass ratio of the component A to the component B is 100: 33-35;

the component A comprises the following raw materials in parts by mass:

the component B is modified MDI;

the polyether polyol A is the flatulence polyether polyol with the functionality of 3, the hydroxyl value of 30-100mgKOH/g, the acid value of less than or equal to 0.8mgKOH/g and the number average molecular weight of 4500-; INOVOL F8001A, a new material to shandong-norway, is preferred.

The polyether polyol B is polyether polyol with the functionality of 3 and the hydroxyl value of 240 mgKOH/g; INOVOL F1070A, a new material to shandong-norway, is preferred.

The polyether polyol C is slow rebound polyether polyol with a hydroxyl value of 200 mgKOH/g. INOVOL S385 of new shandong-norway material is preferred. In place of portion F1070, the hand feel at low temperatures of the article can be improved.

The foam stabilizer is a mixture of low-fogging polysiloxane-oxyalkylene block copolymer and slow-rebound silicone oil. The polysiloxane-oxyalkylene block copolymer is preferably AC-5359H, a low fogging product of Shandong Dingxin; the slow rebound silicone oil is preferably L-580 of the Mylar chart.

The cross-linking agent is an alcohol amine cross-linking agent, preferably one or two of Triethanolamine (TEA) or Diethanolamine (DEOA).

The catalyst is a low atomization reaction type catalyst. Preferably DP36L from Shandong Dingxin.

The blowing agent is preferably water.

The pore former is a special slow rebound pore former, preferably INOVOL S1900 of a new Shandong-one Noway material. The adoption of the pore-forming agent can effectively improve the pore-forming of the slow rebound product and meet the fine and smooth effect of the pores.

The NCO mass content of the modified MDI is 25.5-27%. DG5412, a commercially available product from Norway, Shandong, is preferred.

The preparation method of the noise reduction earplug with the micro flatulence feeling and the ultra-soft feeling comprises the following steps:

(1) preparation of component A:

mixing polyether polyol A, polyether polyol B, polyether polyol C, a foam stabilizer, a crosslinking agent, a catalyst, a foaming agent and a cell opening agent at normal temperature at the rotation speed of 50-60 revolutions per minute, and stirring for 0.6-1 hour to obtain a component A;

(2) preparation of the product:

mixing the component A and the component B according to the mass ratio of 100: 33-100: 35 (R: 0.75-0.85), then injection molding, sealing, opening the mold for 6-9 minutes, and obtaining the target product.

Compared with the prior art, the invention has the following beneficial effects:

(1) in the component A, F8001 flatulence polyether polyol is selected as a main raw material, so that the prepared product has the characteristic of flatulence, the attaching degree of earplugs and ear skin is increased, and the noise reduction effect is improved;

(2) according to the invention, the flatulence polyether F8001 and the cell opening agent S1900 are matched for use, so that the cell structure is adjusted, and the micro flatulence effect is achieved;

(3) in the invention, S385 is matched with F1070A for use, so that the low-temperature hand feeling of the product is improved, the hand feeling is effectively improved, and the foam is fine, soft and comfortable;

(4) in the invention, the foaming agent is selected from full water, and the catalyst is selected from a reaction type catalyst, so that the smell of the product is reduced, the harm to human skin is reduced, and the foaming agent is a friendly material;

(5) the preparation method is scientific, reasonable, simple and feasible, and is beneficial to industrial production.

Detailed Description

The present invention is further illustrated by the following examples, which are not intended to limit the practice of the invention.

The starting materials used in the examples are all commercial products.

Example 1

The component A is prepared from the following raw materials in parts by mass:

the component B is DG 5412;

the preparation method of the noise reduction earplug with the micro flatulence feeling and the ultra-soft feeling comprises the following steps:

preparation of component A:

firstly, F8001, F1070A, S385, AC-5359H, L-580, a cross-linking agent DEOA, DP36L, a foaming agent and S1900 are stirred for 1 hour at the normal temperature at the rotating speed of 60 revolutions per minute, sampling is carried out for inspection, process parameters are met, and satisfactory foam is emitted, so that a qualified product of the component A is obtained;

preparation of the product:

mixing the component A and the component B according to the proportion of 100: and (3) uniformly mixing the components in parts by mass of 33(R is 0.8), then performing injection molding, sealing and opening the mold for 8 minutes.

Example 2

The component A is prepared from the following raw materials in parts by mass:

the component B is DG 5412;

the preparation method of the noise reduction earplug with the micro flatulence feeling and the ultra-soft feeling comprises the following steps:

preparation of component A:

firstly, F8001, F1070A, S385, AC-5359H, L-580, a cross-linking agent DEOA, DP36L, a foaming agent and S1900 are stirred for 1 hour at the normal temperature at the rotating speed of 60 revolutions per minute, sampling is carried out for inspection, process parameters are met, and satisfactory foam is emitted, so that a qualified product of the component A is obtained;

preparation of the product:

mixing the component A and the component B according to the proportion of 100: and (3) uniformly mixing 35(R is 0.8) in parts by mass, then injection molding, sealing and opening the mold for 8 minutes.

Example 3

The component A is prepared from the following raw materials in parts by mass:

the component B is DG 5412;

the preparation method of the noise reduction earplug with the micro flatulence feeling and the ultra-soft feeling comprises the following steps:

preparation of component A:

firstly, F8001, F1070A, S385, AC-5359H, L-580, a cross-linking agent DEOA, DP36L, a foaming agent and S1900 are stirred for 1 hour at the normal temperature at the rotating speed of 60 revolutions per minute, sampling is carried out for inspection, process parameters are met, and satisfactory foam is emitted, so that a qualified product of the component A is obtained;

preparation of the product:

mixing the component A and the component B according to the proportion of 100: and (3) uniformly mixing the components in parts by mass of 33(R is 0.8), then performing injection molding, sealing and opening the mold for 8 minutes.

Example 4

The component A is prepared from the following raw materials in parts by mass:

the component B is DG 5412;

the preparation method of the noise reduction earplug with the micro flatulence feeling and the ultra-soft feeling comprises the following steps:

preparation of component A:

firstly, F8001, F1070A, S385, AC-5359H, L-580, a cross-linking agent DEOA, DP36L, a foaming agent and S1900 are stirred for 1 hour at the normal temperature at the rotating speed of 60 revolutions per minute, sampling is carried out for inspection, process parameters are met, and satisfactory foam is emitted, so that a qualified product of the component A is obtained;

preparation of the product:

mixing the component A and the component B according to the proportion of 100: and (3) uniformly mixing the components in parts by mass of 33(R is 0.8), then performing injection molding, sealing and opening the mold for 8 minutes.

Comparative example 1

The component A is prepared from the following raw materials in parts by mass:

the component B is DG 5412;

the preparation method of the noise reduction earplug comprises the following steps:

preparation of component A:

firstly, F8001, F1070A, AC-5359H, L-580, a cross-linking agent DEOA, DP36L, a foaming agent and S1900 are stirred for 1 hour at the normal temperature at the rotating speed of 60 revolutions per minute, samples are taken for inspection, process parameters are met, satisfactory foams are emitted, and qualified products of the component A are obtained;

preparation of the product:

mixing the component A and the component B according to the proportion of 100: and (3) uniformly mixing the components in parts by mass of 33(R is 0.8), then performing injection molding, sealing and opening the mold for 8 minutes.

Comparative example 2

The component A is prepared from the following raw materials in parts by mass:

the component B is DG 5412;

the preparation method of the noise reduction earplug comprises the following steps:

preparation of component A:

firstly, F8001, F1070A, S385, AC-5359H, L-580, a cross-linking agent DEOA, DP36L and a foaming agent are stirred for 1 hour at the normal temperature at the rotating speed of 60 revolutions per minute, samples are sampled for inspection, process parameters are met, satisfactory foams are emitted, and qualified products of the component A are obtained;

preparation of the product:

mixing the component A and the component B according to the proportion of 100: and (3) uniformly mixing the components in parts by mass of 33(R is 0.8), then performing injection molding, sealing and opening the mold for 8 minutes.

The noise reducing earplugs prepared in the examples and the comparative examples are respectively subjected to performance tests, and the test results are shown in table 1.

Table 1 noise reducing earplug performance test results

Remarking: 1. the mechanical property is tested by GB/T-2008 standard.

2. The noise value testing method refers to the technical requirements and the measuring method of the wireless noise reduction earphone.

3. The phase change recovery time refers to GB/T26392-2011 'determination of recovery time of slow rebound foam'.

As can be seen from Table 1, the product prepared by the method can effectively reduce noise and meet the requirement of being lower than 50 dB. From the data of example 1 and comparative example 1, it is seen that the addition of slow rebound polyether S385 can reduce the effect of temperature change on product hardness and improve product comfort at low temperatures. From the data of example 1 and comparative example 2, the cell opening agent S1900 can well adjust the closed cell condition of the product, and ensure that the product has slight flatulence without shrinkage.

The above-mentioned embodiments are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions, equivalents, etc. made within the scope of the principles of the present invention should be included in the scope of the present invention.