Super-soft low-sensitization breathing airbag and preparation method thereof

Abstract

The invention discloses a super-soft low-sensitization breathing airbag and a preparation method thereof. The super-soft low-sensitization breathing airbag is prepared from mixed latex prepared from vulcanized neoprene latex, styrene-butadiene latex, a waterborne polyurethane solution and isophorone diisocyanate. The isophorone diisocyanate is introduced into the neoprene latex and the styrene-butadiene latex, so that the film-forming property, the surface smoothness, the elasticity and the durability of the mixed latex can be improved, and the service life of a breathing airbag can be prolonged; besides, a waterborne polyurethane solution with the polarity consistent with that of the neoprene latex is introduced into the neoprene latex, the two phases are similar, so that the two phases have good compatibility, a uniform blending system can be formed, and introduction of polyurethane can overcome the defect that the neoprene latex is prone to hardening at the low temperature; certain flexibility and elasticity are kept at the relatively low temperature, and the breathing air bag and the plastic connector have good bonding performance, so that the sealing performance of the breathing air bag is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical appliances, and particularly relates to a super-soft and low-allergy breathing bag and a preparation method thereof. Background Art

[0002] A breathing bag (also known as a resuscitation bag or a manual breathing bag) is a key device for providing artificial ventilation in the first aid and medical fields, and is mainly used for cardiopulmonary resuscitation during the rescue process.

[0003] Traditional air bags mostly use polyvinyl chloride (PVC), but its thickness is relatively large, and it is easy to produce wrinkles, resulting in leakage of secretions. There are also breathing bags made of natural latex on the market, but the breathing bags made of natural latex contain water-soluble proteins and are easy to cause allergies in some people. There are also breathing bags injection-molded with silicone or TPE materials, but the breathing bags injection-molded with these two materials are relatively expensive. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects existing in the prior art and provide a super-soft and low-allergy breathing bag and a preparation method thereof.

[0005] To achieve the above purpose, the technical solution of the present invention is to design a mixed latex, which includes sulfurized chloroprene latex, styrene-butadiene latex, aqueous polyurethane solution and isophorone diisocyanate.

[0006] Further, by weight, the mixed latex includes 70-90 parts of sulfurized chloroprene latex, 5-16 parts of styrene-butadiene latex, 4-15 parts of aqueous polyurethane solution, and 1-3 parts of isophorone diisocyanate;

[0007] Among them, the sulfurized chloroprene latex is prepared by sequentially adding sulfur, an activator, a compound antioxidant and an accelerator to a chloroprene rubber emulsion and mixing and heating.

[0008] Further, the preparation method of the sulfurized chloroprene latex is as follows:

[0009] By weight, take 80-100 parts of chloroprene rubber emulsion, then heat up to 25-40 °C and sequentially add 1-2 parts of sulfur, 1-3 parts of activator, 1.6-2.5 parts of compound antioxidant, 1-2.5 parts of accelerator, and then stir and heat up to 35-45 °C for constant-temperature vulcanization. The vulcanization time is 8-12 hours for standby;

[0010] Preferably, the preparation method of the sulfurized chloroprene latex is as follows:

[0011] By weight, take 90 - 95 parts of chloroprene rubber latex, then heat it to 32 - 35 °C and sequentially add 1 - 2 parts of sulfur, 1 - 3 parts of activator, 1.6 - 2.5 parts of compound antioxidant, and 1 - 2.5 parts of accelerator. After that, stir and heat it to 38 - 42 °C for constant-temperature vulcanization, and keep it for 8 - 12 hours for standby.

[0012] Further, the accelerator is at least one of tetramethylthiuram disulfide (TMTD), zinc dibutyldithiocarbamate (ZDBC), and zinc diethyldithiocarbamate (ZDC);

[0013] The antioxidant is at least one of antioxidant 616, antioxidant BHT (2,6 - di - tert - butyl - 4 - methylphenol), and antioxidant 264 (pentaerythritol tetrakis [β - (3,5 - di - tert - butyl - 4 - hydroxyphenyl) propionate]);

[0014] The activator is at least one of ZnO and zinc carbonate (ZnCO3).

[0015] Preferably, the accelerator is zinc diethyldithiocarbamate; the compound antioxidant is compound antioxidant 616; and the activator is ZnO.

[0016] More preferably, for the vulcanization method of chloroprene rubber latex: take 92 Kg of chloroprene rubber latex from Denka Japan (model: LM - 61), then heat it to 32 - 35 °C and sequentially add 2.0 Kg of S, 2.0 Kg of ZnO, 2.0 Kg of compound antioxidant 616, and 2.0 Kg of accelerator zinc diethyldithiocarbamate (ZDC). After that, stir and heat it to 40 ± 2 °C for constant-temperature vulcanization, and keep it for 10 hours for standby to obtain the vulcanized LM - 61 latex.

[0017] Further, the preparation method of the mixed latex is as follows:

[0018] By weight, weigh the vulcanized chloroprene rubber latex, and then sequentially add styrene - butadiene rubber latex, aqueous polyurethane solution, and isophorone diisocyanate, and prepare it after stirring at 25 - 40 °C for 24 - 60 hours;

[0019] Preferably, the preparation method of the mixed latex is as follows:

[0020] By weight, weigh the vulcanized chloroprene rubber latex, and then sequentially add styrene - butadiene rubber latex, aqueous polyurethane solution, and isophorone diisocyanate, and prepare it after stirring at 32 ± 2 °C for 48 hours.

[0021] Further, the mixed latex also includes dibutyl sebacate; the preparation method of the mixed latex is as follows:

[0022] Weigh the chloroprene latex by weight parts, and then successively add styrene-butadiene latex, aqueous polyurethane solution, isophorone diisocyanate, and dibutyl sebacate, and prepare it after stirring at 25-40 °C for 24-60 hours.

[0023] Preferably, the mixed latex further includes dibutyl sebacate; the preparation method of the mixed latex is as follows:

[0024] Weigh the chloroprene latex by weight parts, and then successively add styrene-butadiene latex, aqueous polyurethane solution, isophorone diisocyanate, and dibutyl sebacate, and prepare it after stirring at 32±2 °C for 48 hours.

[0025] More preferably, by weight parts, the mixed latex includes 70-90 parts of chloroprene latex, 5-16 parts of styrene-butadiene latex, 4-15 parts of aqueous polyurethane solution, 1-3 parts of isophorone diisocyanate, and 0-2 parts of dibutyl sebacate;

[0026] Most preferably, by weight parts, the mixed latex includes 85 parts of chloroprene latex, 7 parts of styrene-butadiene latex, 5 parts of aqueous polyurethane solution, 2 parts of isophorone diisocyanate, and 1 part of dibutyl sebacate.

[0027] Most preferably, by weight parts, the mixed latex includes 88 parts of chloroprene latex, 5 parts of styrene-butadiene latex, 4 parts of aqueous polyurethane solution, 1.5 parts of isophorone diisocyanate, and 1.5 parts of dibutyl sebacate.

[0028] A mixed latex can be used to prepare a super soft and low-sensitization breathing airbag.

[0029] A preparation method of a super soft and low-sensitization breathing airbag, the preparation steps thereof include:

[0030] S1: Clean the mold, then dry it, and then take out the mold, and cool the mold temperature to 50-60 °C;

[0031] S2: Immerse the mold in the coagulant, and heat it at a water bath temperature of 40-60 °C for 5-20 s, then put it into the oven, dry it at 70-90 °C for 3-5 min, then take out the mold, and cool the mold temperature to 50-60 °C;

[0032] S3: Immerse the mold in the mixed latex, the immersion time is 45-50 s, then take it out and dry it at 70-90 °C for 2-3 min;

[0033] S4: Immerse the mold in the mixed latex again, the immersion time is 45-50 s, then take it out and dry it at 70-90 °C for 2-3 min;

[0034] S5: Immerse in hot water at 60 - 80°C for 10 - 25 min, and then dry at 70 - 90°C for 3 - 5 min;

[0035] S6: Dip - coat, spin - off the excess drops, and then crimp the edge;

[0036] S7: Vulcanize: Put it into an oven, dry at 110 - 130°C for 30 - 60 minutes and then take it out;

[0037] S8: Demold to obtain an ultra - soft and low - allergenic breathing airbag.

[0038] Preferably, in steps S1, S2, S3, S4 and S5, drying is carried out at 80°C;

[0039] Preferably, in step S7, take it out after drying at 120°C for 45 minutes.

[0040] Preferably, in step S2, heat in a water bath at a temperature of 48 - 50°C for 8 - 10 s;

[0041] Preferably, in step S5, immerse in hot water at 70 ± 2°C for 15 - 20 min;

[0042] Preferably, in step S6, the coating liquid is the coating liquid of model SX - 643F produced by Shixiu New Material Technology (Zhejiang) Co., Ltd., and the dipping time in the coating liquid is 10 - 20 s.

[0043] Further, by weight, the coagulant includes 20 - 40 parts of calcium nitrate, 1 - 4 parts of 5% Peregal O, 3 - 7 parts of calcium stearate, 1 - 3 parts of hydroxyethyl cellulose, and 50 - 70 parts of soft water;

[0044] Preferably, by weight, the coagulant includes 25 parts of calcium nitrate, 3 parts of 5% Peregal O, 5 parts of calcium stearate, 2 parts of hydroxyethyl cellulose, and 65 parts of soft water;

[0045] Among them, the preparation method of 5% Peregal O is as follows: Add 5 kg of Peregal O to 95 kg of soft water.

[0046] Further, the preparation method of the coagulant is as follows:

[0047] Weigh soft water, and in a stirred state, add solid calcium nitrate, calcium stearate, hydroxyethyl cellulose and 5% Peregal O in sequence by means of water - bath heating, and continue stirring until all solid substances are completely dissolved, then filter and reserve;

[0048] Preferably, the water - bath heating temperature is 40 - 50°C; preferably 43 - 47°C.

[0049] Further, in step S2, Ca is used 2+A coagulant with a concentration of 20 - 40%.

[0050] In the present invention, in the mixed system of chloroprene latex and styrene - butadiene latex, when heated to 32 ± 2 °C, the reaction lasts for 48 hours. The isocyanate group (-NCO) in IPDI can react with the chlorine atoms or double bonds in the chloroprene latex to form a cross - linked structure; it can also react with the double bonds or carboxyl groups in the styrene segments of the styrene - butadiene latex, so as to improve the compatibility of the two phases by reducing the interfacial tension, and improve the elastic recovery performance of the system and the processing performance of the product.

[0051] The advantages and beneficial effects of the present invention are as follows:

[0052] (1) Introducing isophorone diisocyanate (IPDI) into the chloroprene latex and styrene - butadiene latex can not only improve the film - forming property, surface smoothness, elasticity and durability of the mixed latex, but also extend the service life of the breathing airbag.

[0053] (2) Introducing an aqueous polyurethane solution with the same polarity as the chloroprene latex. Since the two phases are similar, they have good compatibility and can form a uniform blend system. The introduction of polyurethane can not only change the defect that the chloroprene latex is prone to harden at low temperatures, making it maintain a certain softness and elasticity at relatively low temperatures, but also enable the breathing airbag to have good adhesion performance with the plastic joint to ensure the airtightness of the breathing airbag.

[0054] (3) Introducing dibutyl sebacate into the system. Its molecules can penetrate between the latex molecular chains, increasing the mobility of the molecular chains, thereby improving the softness and elasticity of the composite latex and improving the touch and comfort of the breathing airbag. Description of the Drawings

[0055] Figure 1 The product diagram prepared for Example 1;

[0056] Figure 2 The product diagram prepared for Comparative Example 1 - 1;

[0057] Figure 3 The product diagram prepared for Comparative Example 1 - 2;

[0058] Figure 4 The product diagram prepared for Comparative Example 1 - 3;

[0059] Figure 5 The product diagram prepared for Comparative Example 1 - 4;

[0060] Figure 6 The product diagram prepared for Example 2;

[0061] Figure 7 The product diagram prepared for Comparative Example 2 - 1;

[0062] Figure 8 Product diagram prepared for Example 3 Detailed implementation manners

[0063] The following combines examples to further describe the detailed implementation manners of the present invention. The following examples are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0064] The manufacturers and models of the raw materials used in the examples and comparative examples are as follows:

[0065] Neoprene latex: Denka Japan (model LM-61);

[0066] Styrene-butadiene latex: Trinseo, model: LIGO A 3630;

[0067] Waterborne polyurethane solution: Covestro, model DLN-SD;

[0068] Waterborne coating: SX-643F; Shixiu New Material Technology (Zhejiang) Co., Ltd.

[0069] (I) Example

[0070] Example 1:

[0071] In this example, a preparation method of a super soft and low-sensitization breathing airbag is provided, and the preparation steps are specifically as follows:

[0072] Step 1) Sulfuration method of neoprene latex

[0073]

[0074] Take 92 Kg of neoprene latex from Denka Japan (model: LM-61), then heat it to 32 - 35 °C and sequentially add 2 Kg of S, 2 Kg of ZnO, 2 Kg of compound antioxidant 616, and 2 Kg of accelerator zinc diethyldithiocarbamate (ZDC). After that, stir and heat it to 40 ± 2 °C for constant-temperature vulcanization, and the vulcanization time is 10 hours for standby to obtain the vulcanized LM-61 latex.

[0075] Step 2) Preparation method of breathing airbag mixed latex

[0076]

[0077] Weigh 81 Kg of vulcanized LM-61 latex, and then sequentially add 10 Kg of Trinseo styrene-butadiene latex (model: LIGO A3630), 8 Kg of Covestro waterborne polyurethane solution (DLN-SD), and 1 Kg of isophorone diisocyanate (IPDI). Stir at 32 ± 2 °C for 48 hours and then set aside.

[0078] Step 3) Preparation method of coagulant:

[0079]

[0080]

[0081] Weigh 65 kg of soft water. By means of water bath heating (temperature: 45 ± 2 °C), while stirring, sequentially add 25 Kg of solid calcium nitrate, 5 Kg of calcium stearate, 3 Kg of hydroxyethyl cellulose, and 3 Kg of 5% pre-diluted Peregal O. Continuously stir until all solid substances are completely dissolved, and then filter for standby.

[0082] Among them, the preparation method of 5% Peregal O is as follows: Take 5 kg of Peregal O and add it to 95 kg of soft water. Heat it to 35 ± 2 °C and stir until Peregal O is completely dissolved to obtain a 5% Peregal O aqueous solution.

[0083] Step 4) Preparation method of super soft and low-sensitization breathing airbag:

[0084] S1: Mold pretreatment: Clean the mold, then dry it at 80 °C, and then take out the mold. Let the mold temperature cool to 50 - 60 °C;

[0085] S2: Immerse the mold in the coagulant and heat it in a water bath at a temperature of 48 - 50 °C for 8 - 10 s, then put it into an oven and dry it at 80 °C for 5 min. Then take out the mold and let the mold temperature cool to 50 - 60 °C;

[0086] S3: Immerse the mold in the mixed latex for 45 - 50 s, then take it out and dry it at 80 °C for 2.5 min;

[0087] S4: Immerse the mold in the mixed latex again for 45 - 50 s, then take it out and dry it at 80 °C for 3 min;

[0088] S5: Immerse it in hot water at 70 ± 2 °C for 18 min, then dry it at 80 °C for 5 min;

[0089] S6: Apply the coating, shake off the remaining drops, and then crimp the edge; Among them, the coating liquid is the coating liquid of model SX-643F produced by Shixiu New Material Technology (Zhejiang) Co., Ltd., and the impregnation time in the coating liquid is 15 s;

[0090] S7: Vulcanize: Put it into an oven, dry it at 120 °C for 45 minutes and then take it out;

[0091] S8: Demold to obtain a super soft and low-sensitization breathing airbag.

[0092] Comparative example 1-1:

[0093] The difference from Example 1 is only that: step 2) is different, specifically as follows:

[0094] Preparation method of the breathing airbag mixed latex in step 2)

[0095] 81 Kg of vulcanized LM-61 latex

[0096] 10 Kg of LIGO A 3630

[0097] 8 Kg of DLN-SD-PU

[0098] Weigh 81 Kg of vulcanized LM-61 latex, and then sequentially add 10 Kg of Shengxi Aoding styrene latex (model: LIGO A3630) and 8 Kg of Covestro aqueous polyurethane solution (DLN-SD), and stir at 32 ± 2 °C for 48 hours and then set aside.

[0099] Comparative Example 1-2:

[0100] The difference from Example 1 is only that: step 2) is different, specifically as follows:

[0101] Preparation method of the breathing airbag mixed latex in step 2)

[0102] 81 Kg of vulcanized LM-61 latex

[0103] 10 Kg of LIGO A 3630

[0104] 1 Kg of isophorone diisocyanate (IPDI)

[0105] Weigh 81 Kg of vulcanized LM-61 latex, and then sequentially add 10 Kg of Shengxi Aoding styrene latex (model: LIGO A3630) and 1 Kg of isophorone diisocyanate (IPDI), and stir at 32 ± 2 °C for 48 hours and then set aside.

[0106] Comparative Example 1-3:

[0107] The difference from Example 1 is only that: step 2) is different, specifically as follows:

[0108] Preparation method of the breathing airbag mixed latex in step 2)

[0109]

[0110] Weigh 81 Kg of vulcanized LM-61 latex, and then sequentially add 10 Kg of Shengxi Aoding styrene latex (model: LIGO A3630), 8 Kg of Covestro aqueous polyurethane solution (DLN-SD), and 1 Kg of isophorone diisocyanate (IPDI), and stir at 42 ± 2 °C for 48 hours and then set aside.

[0111] Comparative Example 1-4:

[0112] The difference from Example 1 is only that: Step 2) is different, specifically as follows:

[0113] Step 2) Preparation method of the breathing airbag mixed latex

[0114] Vulcanize 81 Kg of LM-61 latex

[0115] 10 Kg of LIGO A 3630

[0116] Weigh 81 Kg of vulcanized LM-61 latex, then add 10 Kg of Shengxi Aoding benzene latex (model: LIGO A 3630), and stir at 32 ± 2 °C for 48 hours for later use.

[0117] Example 2:

[0118] The difference from Example 1 is only that: the vulcanization method of the chloroprene latex and the preparation method of the breathing airbag mixed latex are different, specifically as follows:

[0119] Step 1) Vulcanization method of the chloroprene latex

[0120]

[0121] Take 92 Kg of chloroprene latex of Denka Japan (model: LM-61), then heat it up to 32 - 35 °C and sequentially add 2 Kg of S, 2 Kg of ZnO, 2 Kg of compound antioxidant 616, 2 Kg of accelerator zinc diethyldithiocarbamate (ZDC), and then stir and heat up to 40 ± 2 °C for constant temperature vulcanization. The vulcanization time is 10 hours for later use to obtain the vulcanized LM-61 latex.

[0122] Step 2) Preparation method of the breathing airbag mixed latex

[0123]

[0124] Weigh 85 Kg of vulcanized chloroprene latex, then sequentially add 7 Kg of Shengxi Aoding benzene latex (model: LIGO A 3630), 5 Kg of Covestro aqueous polyurethane solution (DLN-SD), 2 Kg of isophorone diisocyanate (IPDI), 1 Kg of dibutyl sebacate, and stir at 32 ± 2 °C for 48 hours for later use.

[0125] Comparative Example 2-1:

[0126] The difference from Example 2 is only that: Step 1) the vulcanization method of the chloroprene latex is missing, and Step 2) is different, specifically as follows:

[0127] Step 2) Preparation method of the breathing airbag mixed latex

[0128]

[0129] Weigh 85 Kg of unvulcanized chloroprene latex, and then successively add 7 Kg of Shengxi Aoding styrene-butadiene latex (model: LIGO A3630), 5 Kg of Covestro aqueous polyurethane solution (DLN-SD), 2 Kg of isophorone diisocyanate (IPDI), 1 Kg of dibutyl sebacate, and stir at 32 ± 2 °C for 48 hours for later use.

[0130] Example 3:

[0131] The difference from Example 1 is only that: the vulcanization method of chloroprene latex and the preparation method of the mixed latex for the breathing airbag are different, which are specifically as follows:

[0132] Step 1) Vulcanization method of chloroprene latex

[0133]

[0134] Take 90 Kg of chloroprene rubber latex from Denka Japan (model: LM-61), then heat it up to 32 - 35 °C and successively add 2 Kg of S, 3 Kg of ZnCO3, 2.5 Kg of compound antioxidant 616, 2.5 Kg of accelerator zinc dibutyldithiocarbamate (ZDBC), and then stir and heat up to 40 ± 2 °C for constant-temperature vulcanization. The vulcanization time is 10 hours for later use to obtain the vulcanized LM-61 latex.

[0135] Step 2) Preparation method of the mixed latex for the breathing airbag

[0136]

[0137] Weigh 88 Kg of vulcanized chloroprene latex, and then successively add 5 Kg of Shengxi Aoding styrene-butadiene latex (model: LIGO A 3630), 4 Kg of Covestro aqueous polyurethane solution (DLN-SD), 1.5 Kg of isophorone diisocyanate (IPDI), 1.5 Kg of dibutyl sebacate, and stir at 32 ± 2 °C for 48 hours for later use.

[0138] (II) Performance testing

[0139] 1) Testing method

[0140] Flexibility: Refer to the national standard GB / T7543-2020IS010282. After preparing the breathing airbag to the same thickness as a medical surgical glove and cutting it into pieces, test its performance, and then compare the elongation at break % and the 300% modulus value of the cut pieces;

[0141] Allergenicity: Detect the protein in the breathing airbag. The protein content can be detected by referring to GB / T 21870-2008 / IS012243:2003.

[0142] 2) Test results

[0143] The test results of the flexibility performance are shown in Table 1 below:

[0144] Table 1

[0145]

[0146]

[0147] The test results of the protein detection are shown in Table 2 below:

[0148] Table 2

[0149] Serial number Detection result Example 1 Not detected Comparative example 1-1 Not detected Comparative example 1-2 Not detected Comparative example 1-3 Not detected Comparative example 1-4 Not detected Example 2 Not detected Comparative example 2-1 Not detected Example 3 Not detected

[0150] It can be seen from the performance test results in Table 1 that through Example 1 and Comparative Examples 1-1 to 1-2 and Comparative Example 1-4, it can be known that introducing isophorone diisocyanate (IPDI) into chloroprene latex and styrene-butadiene latex can not only improve the film-forming property, surface smoothness, elasticity and durability of the mixed latex, but also extend the service life of the breathing airbag. Introducing an aqueous polyurethane solution with the same polarity as that in the chloroprene latex, the two phases are similar, so the two have good compatibility and can form a uniform blend system. The introduction of polyurethane can not only change the defect that the chloroprene latex is easy to harden at low temperature, so that it still maintains a certain softness and elasticity at relatively low temperature, but also enable the breathing airbag to have good adhesion performance with the plastic joint to ensure the airtightness of the breathing airbag.

[0151] It can be seen from the comparison between Example 1 and Comparative Example 1-3 that the breathing airbag prepared in Comparative Example 1-3 is relatively hard; while in Examples 2 and 3, dibutyl sebacate is introduced into the system, and its molecules can penetrate between the latex molecular chains to increase the mobility of the molecular chains, thereby improving the softness and elasticity of the composite latex and improving the touch and comfort of the breathing airbag. It can be seen from the comparison between Example 2 and Comparative Example 2-1 that the performance of the breathing airbag can be effectively improved by using vulcanized chloroprene latex.

[0152] It can be seen from the performance test results in Table 2 that the breathing airbags prepared through Examples 1-3 and Comparative Example 1-6 all meet the requirements.

[0153] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and retouches can still be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A hybrid latex, characterized in that, It includes sulfurized chloroprene latex, styrene-butadiene latex, aqueous polyurethane solution and isophorone diisocyanate.

2. The hybrid latex according to claim 1, characterized in that, By weight, the mixed latex includes 70-90 parts of sulfurized chloroprene latex, 5-16 parts of styrene-butadiene latex, 4-15 parts of aqueous polyurethane solution, and 1-3 parts of isophorone diisocyanate; Among them, the sulfurized chloroprene latex is prepared by sequentially adding sulfur, active agent, compound antioxidant and accelerator to the chloroprene latex emulsion and mixing and heating.

3. The hybrid latex according to claim 2, characterized in that, The preparation method of the sulfurized chloroprene latex is as follows: By weight, take 80-100 parts of chloroprene latex emulsion, then heat up to 25-40 °C and sequentially add 1-2 parts of sulfur, 1-3 parts of active agent, 1.6-2.5 parts of compound antioxidant, 1-2.5 parts of accelerator, and then stir and heat up to 35-45 °C for constant temperature vulcanization. The vulcanization time is 8-12 hours for standby; Among them, the accelerator is at least one of tetramethylthiuram disulfide, zinc dibutyldithiocarbamate, and zinc diethyldithiocarbamate; The antioxidant is at least one of antioxidant 616, antioxidant BHT, and antioxidant 264; The active agent is at least one of ZnO and zinc carbonate.

4. A hybrid latex according to claim 1, characterized in that, The preparation method of the mixed latex is as follows: By weight, weigh the sulfurized chloroprene latex, and then sequentially add styrene-butadiene latex, aqueous polyurethane solution, and isophorone diisocyanate, and prepare by stirring at 25-40 °C for 24-60 hours.

5. A hybrid latex according to claim 1, characterized in that, The mixed latex also includes dibutyl sebacate; the preparation method of the mixed latex is as follows: By weight, weigh the sulfurized chloroprene latex, and then sequentially add styrene-butadiene latex, aqueous polyurethane solution, isophorone diisocyanate, and dibutyl sebacate, and prepare by stirring at 25-40 °C for 24-60 hours.

6. A mixed latex as described in any one of claims 1-5 can be used to prepare a super soft and low-sensitization breathing airbag.

7. A preparation method of an ultra-soft and low-allergy breathing airbag as described in claim 6, characterized in that, Its preparation steps include: S1: Clean the mold, then dry it, and then take out the mold. The temperature of the mold is cooled to 50-60 °C; S2: Immerse the mold in the coagulant and heat it at a water bath temperature of 40-60 °C for 5-20 s, then put it into the oven and dry it at 70-90 °C for 3-5 min, then take out the mold. The temperature of the mold is cooled to 50-60 °C; S3: Immerse the mold in the mixed latex for 45-50 s, then take it out and dry it at 80 °C for 2-3 min; S4: Immerse the mold in the mixed latex again for 45-50 s, then take it out and dry it at 70-90 °C for 2-3 min; S5: Immerse it in hot water at 60-80 °C for 10-25 min, and then dry it at 70-90 °C for 3-5 min; S6: Dip the coating, shake off the remaining drops, and then crimp the edge; S7: Vulcanize: Put it into the oven and dry it at 110-130 °C for 30-60 minutes and then take it out; S8: Demold to obtain a super soft and low-sensitization breathing airbag.

8. The preparation method of a super-soft and low-allergy breathing airbag according to claim 7, characterized in that, By weight, the coagulant includes 20-40 parts of calcium nitrate, 1-4 parts of 5% Peregal O, 3-7 parts of calcium stearate, 1-3 parts of hydroxyethyl cellulose, and 50-70 parts of soft water; Preferably, by weight parts, the coagulant comprises 25 parts of calcium nitrate, 3 parts of 5% Peregal O, 5 parts of calcium stearate, 2 parts of hydroxyethyl cellulose, and 65 parts of soft water.

9. The preparation method of a super soft and low-sensitization breathing airbag according to claim 8, characterized in that, The preparation method of the coagulant is as follows: Weigh soft water, and in a stirred state, successively add solid calcium nitrate, calcium stearate, hydroxyethyl cellulose, and 5% Peregal O by means of water bath heating, and continue stirring until all solid substances are completely dissolved, then filter and set aside; Preferably, the water bath heating temperature is 40-50 °C; preferably 43-47 °C.

10. The preparation method of a super soft and hypoallergenic breathing airbag according to claim 8, characterized in that, In step S2, Ca 2+ is used as the coagulant with a concentration of 20-40%.

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