Low-carbon, low-odor and low-VOC (volatile organic compound) carbon dioxide-based polyether foam

Abstract

The invention discloses low-carbon, low-odor and low-VOC (volatile organic compound) carbon dioxide-based polyether foam which is characterized by comprising a component A and a component B. The component A comprises the following components in parts by weight: 65-80 parts of polyether polyol, 20-35 parts of carbon dioxide-based polyether polyol, 3-4 parts of foaming agent water, 0.7-1.2 parts of catalyst, 0.8-2 parts of cross-linking agent and 0.6-1.2 parts of stabilizer. The component B is an isocyanate mixture and comprises TDI (toluene diisocynate) and MDI (diphenylmethane diisocyanate), and the mass percent of TDI to MDI is (50-80%): (50-20%). According to the invention, the carbon dioxide-based polyether polyol and the water are selected as the foaming agent, so that the smell of the finally produced foam meets the requirements of the Changqian standard, the Gili standard, the Baidi standard and the like: the Changqian standard is less than or equal to grade 3, the Gili standard is more than or equal to grade 6.0, and the Baidi standard is less than or equal to grade 3.3, and no obvious smell perception exists; the VOC of the foam can completely meet the industry and national standards, no harm is caused to bodies of drivers and passengers, carbon emission of foam production is reduced by more than 50%, and the foam is accepted by main engine plants and users.

Description

Technical Field

[0001] The invention relates to a low-carbon, low-odor, low-VOC carbon dioxide-based polyether foam, belonging to the technical field of foaming materials. Background Art

[0002] Car seats are the main car parts that drivers and passengers directly contact and perceive. They have a direct impact on their riding comfort, perception of odor concentration in the car, and physical health. Therefore, in addition to riding comfort, seats must also be environmentally friendly. Odor and VOC harmful substance indicators cannot exceed the content level that causes harm to the drivers and passengers' bodies, and must comply with industry and national standards.

[0003] To achieve low carbon, low odor and low VOC in the production of car seats, from the perspective of foam, it mainly exists in petroleum-based polyether polyols and isocyanates as well as amine catalysts, stabilizers, cross-linking agents, repair glue, release agents, etc. Existing formulas include:

[0004] Component A: weight ratio: petroleum-based polyether polyol: 50-80%, petroleum-based polymer polyol: 50-20%, total foaming agent: 2.8-4.2%, total catalyst: 0.6-1.5%, total cross-linking agent: 0.8-2.5%, total stabilizer: 0.8-1.2%.

[0005] The weight ratio of component B mixture is:

[0006] TDI:MDI=(50-80%):(50-20%)

[0007] After foaming, the foam odor (level 3-3.5) and some VOC substances exceed the national and industry standards by 30-200%. The total carbon emissions are high, and TVOC exceeds 10,000, which does not meet the national low-carbon environmental protection requirements and causes pollution to the environment.

[0008] The national and OEM standards for automotive seat assembly odor and VOC are becoming increasingly stringent, and they also require low-carbon production and emissions. However, existing automotive seat foam production technology cannot fully meet national and enterprise standards for foam odor and VOC, as shown below:

[0009] Summary of the Invention

[0010] In view of the above problems, the object of the present invention is to provide a low-carbon, low-odor, low-VOC carbon dioxide-based polyether foam.

[0011] In order to achieve the above-mentioned first purpose, the technical solution of the present invention is: a low-carbon, low-odor, low-VOC carbon dioxide-based polyether foam, characterized in that: it is composed of component A and component B in a ratio of 100:40-53, wherein component A is composed of the following components in parts by weight: 65-80 parts of polyether polyol, 20-35 parts of carbon dioxide-based polyether polyol, 3-4 parts of foaming agent water, 0.7-1.2 parts of catalyst, 0.8-2 parts of crosslinking agent, and 0.6-1.2 parts of stabilizer.

[0012] The B component is an isocyanate mixture, which includes TDI and MDI, with the mass percentage of TDI:MDI being 50-80%:50-20%.

[0013] In the above scheme: the polyether polyol is a polyether polyol produced by Sinochem Dongda (Zibo) Co., Ltd., and the carbon dioxide-based polyol is a carbon dioxide-based polyether polyol produced by Changhua Chemical Technology Co., Ltd.

[0014] In the above scheme: the catalyst is a combination of catalysts NE317, NE1050 and NE1082 produced by Evonik Specialty Chemicals.

[0015] In the above scheme: the catalysts NE317, NE1050 and NE1082 are combined according to the following weight parts: NE317 0.1-0.3 parts, NE1055 0.3-0.7 parts, NE1082 0.3-0.7 parts, and the total is 0.7-1.2 parts.

[0016] In the above solution, the stabilizer is a combination of stabilizers SI1314LO and SI1107L0 from Evonik Specialty Chemicals.

[0017] SI1314LO is a mixture of organically modified polysiloxanes purchased from Evonik Specialty Chemicals (Shanghai) Co., Ltd. SI1107L0 is an organically modified polysiloxane preparation purchased from Evonik Specialty Chemicals (Nanjing) Co., Ltd.

[0018] In the above scheme: stabilizers SI1314LO and SI1107L0 are combined according to the following weight parts: SI1314LO 0.2-0.8 parts, SI1107L0 0.2-0.8 parts, totaling 0.6-1.2 parts.

[0019] In the above solution, the cross-linking agent is a combination of DEOA and TEOA in any proportion produced by Dow Chemical (China) Co., Ltd.

[0020] In the above scheme: the TDI is recycled TDI from Covestro, and the MDI is M20S from BASF.

[0021] Beneficial effect: The present invention selects carbon dioxide-based polyether polyol and water as a foaming agent, so that the odor of the produced foam meets the requirements of Changan standards, Geely standards and BYD standards: Changan standard ≤ level 3, Geely standard ≥ level 6.0, BYD standard ≤ level 3.3, the driver and passengers have no obvious odor perception, the foam VOC can fully meet the industry and national standards, and has no harm to the driver and passengers' bodies, and the carbon emissions of foam production are reduced by more than 50%, which is recognized by the main manufacturers and users. DETAILED DESCRIPTION

[0022] The present invention will be further described below by way of examples:

[0023] Example 1

[0024] Component A and component B are composed in a mass ratio of 100:40

[0025] Component A consists of the following raw materials in parts by weight:

[0026] Polyether polyol: 65 parts, carbon dioxide-based polyether polyol: 35 parts, foaming agent water 3.0 parts, total amount of catalyst: 0.7 parts, total amount of cross-linking agent: 0.8 parts, total amount of stabilizer: 0.6 parts.

[0027] Among them, the polyether polyol is the polyether polyol produced by Sinochem Dongda (Zibo) Co., Ltd., and the carbon dioxide-based polyol is the carbon dioxide-based polyether polyol produced by Changhua Chemical Technology Co., Ltd.

[0028] The catalyst is a combination of catalysts NE317, NE1050, and NE1082 produced by Evonik Specialty Chemicals, with 0.1 parts of NE317, 0.3 parts of NE1055, and 0.3 parts of NE1082.

[0029] The stabilizer is a combination of Evonik Specialty Chemicals' stabilizers SI1314LO and SI1107L0, with 0.2 parts of SI1314LO and 0.4 parts of SI1107L0.

[0030] The crosslinking agent is 0.4 parts of DEOA and 0.4 parts of TEOA produced by Dow Chemical (China) Co., Ltd. of the United States.

[0031] Component B is an isocyanate mixture containing TDI and MDI in a ratio of 50% TDI:50% by weight. TDI is recycled TDI from Covestro, and MDI is M20S from BASF.

[0032] Prepare as follows:

[0033] Components A and B are mixed in proportion and stored in separate tanks for temperature control. Components A and B are then mixed under high pressure in a high-pressure foaming machine before being injected into the mold, closed, reacted, and matured for molding. The temperature of the raw materials in the tanks is 20°C-26°C. The pressure of the high-pressure pump and mixing head is 100-140 bar, the flow rate is 300-400 g / s, and the injection size is 900-3800 g. The mold closing reaction and curing time is 4-4.5 minutes. The upper and lower mold temperatures are controlled at 55°C-65°C.

[0034]

[0035] VOC test results of carbon dioxide-based polyether foam

[0036]

[0037]

[0038] Example 2

[0039] Component A and component B are composed in a mass ratio of 100:53

[0040] Component A consists of the following raw materials in parts by weight:

[0041] Polyether polyol: 80 parts, carbon dioxide-based polyether polyol: 20 parts, foaming agent water: 4.0 parts, total amount of catalyst: 1.2 parts, total amount of cross-linking agent: 2.0 parts, total amount of stabilizer: 1.2 parts.

[0042] Among them, the polyether polyol is the polyether polyol produced by Sinochem Dongda (Zibo) Co., Ltd., and the carbon dioxide-based polyol is the carbon dioxide-based polyether polyol produced by Changhua Chemical Technology Co., Ltd.

[0043] The catalyst is a combination of catalysts NE317, NE1050, and NE1082 produced by Evonik Specialty Chemicals, with 0.2 parts of NE317, 0.7 parts of NE1055, and 0.3 parts of NE1082.

[0044] The stabilizer is a combination of Evonik Specialty Chemicals' stabilizers SI1314LO and SI1107L0, with 0.4 parts of SI1314LO and 0.8 parts of SI1107L0.

[0045] The crosslinking agent is 1.0 part DEOA and 1.0 part TEOA produced by Dow Chemical (China) Co., Ltd. of the United States.

[0046] Component B is an isocyanate mixture containing TDI and MDI in a ratio of 80% TDI to 20% by weight. TDI is recycled TDI from Covestro, and MDI is M20S from BASF.

[0047] Prepare as follows:

[0048] Components A and B are mixed in proportion to form a composite material and stored in respective storage tanks for temperature adjustment. Components A and B are then mixed under high pressure in a high-pressure foaming machine, injected into a mold, closed for reaction, and then matured for molding.

[0049] The temperature of the raw materials stored in the storage tank is 20°C-26°C. The pressure of the high-pressure pump and mixing head is 100-140 bar, the flow rate is 300-400g / s, and the injection volume is 900-3800g. The mold closing reaction and aging time is 4-4.5 minutes. The upper and lower mold temperatures are controlled at 55°C-65°C.

[0050]

[0051] VOC test results of carbon dioxide-based polyether foam

[0052]

[0053] Example 3

[0054] Component A and component B are composed in a mass ratio of 100:45

[0055] Component A consists of the following raw materials in parts by weight:

[0056] Polyether polyol: 75 parts, carbon dioxide-based polyether polyol: 25 parts, foaming agent water: 3 parts, total amount of catalyst: 1.0 part, total amount of cross-linking agent: 1.6 parts, total amount of stabilizer: 1.0 part.

[0057] Among them, the polyether polyol is the polyether polyol produced by Sinochem Dongda (Zibo) Co., Ltd., and the carbon dioxide-based polyol is the carbon dioxide-based polyether polyol produced by Changhua Chemical Technology Co., Ltd.

[0058] The catalyst is a combination of catalysts NE317, NE1050, and NE1082 produced by Evonik Specialty Chemicals, with 0.1 parts of NE317, 0.3 parts of NE1055, and 0.6 parts of NE1082.

[0059] The stabilizer is a combination of Evonik Specialty Chemicals' stabilizers SI1314LO and SI1107L0, with 0.6 parts of SI1314LO and 0.4 parts of SI1107L0.

[0060] The crosslinking agent is 0.8 parts of DEOA and 0.8 parts of TEOA produced by Dow Chemical (China) Co., Ltd. of the United States.

[0061] Component B is an isocyanate mixture containing TDI and MDI in a ratio of 60% TDI to 40% MDI by weight. The TDI is recycled TDI from Covestro, and the MDI is M20S from BASF.

[0062] Prepare as follows:

[0063] Components A and B are mixed in proportion to form a composite material and stored in respective storage tanks for temperature adjustment. Components A and B are then mixed under high pressure in a high-pressure foaming machine, injected into a mold, closed for reaction, and then matured for molding.

[0064] The temperature of the raw materials stored in the storage tank is 20°C-26°C. The pressure of the high-pressure pump and mixing head is 100-140 bar, the flow rate is 300-400g / s, and the injection volume is 900-3800g. The mold closing reaction and aging time is 4-4.5 minutes. The upper and lower mold temperatures are controlled at 55°C-65°C.

[0065]

[0066] VOC test results of carbon dioxide-based polyether foam

[0067]

[0068] Example 4 is the same as Example 2 except that:

[0069] The main polyether ingredients used are Changhua Chemical Polyether Polyol 2803L (6000 molecular weight) and Changhua Chemical Carbon Dioxide-based Polyether, Cangzhou Dahua TDI and BASF MDI, Huntsman Chemical Trading (Shanghai) Co., Ltd. catalysts LE517 (polyurethane catalyst), LE519, LED-103 (JEFFCAT LED-103) and Xiamen Kaiping Chemical stabilizers 1231 and 1254, and Jiahua Chemical Co., Ltd. crosslinkers DEOA and TEOA. The chemical reaction produces foam odor: Changan standard ≤ Level 3, actual level (2.8-3.3), Geely standard ≥ Level 6.0, actual level (5.5-6.0), BYD standard ≤ Level 3, actual level (3.2-3.5). The foam VOC does not fully meet industry and national standards. Drivers and passengers can notice the odor and it is harmful to the body. Carbon emissions from foam production are reduced by more than 30%.

[0070] Example 4: Test results of carbon dioxide-based foam odor

[0071]

[0072] VOC test results of carbon dioxide-based polyether foam

[0073] Benzene 50 ND qualified Benzene 50 ND qualified Benzene 40 ND qualified Toluene 300 29.53 qualified Toluene 300 12.35 qualified Toluene 200 ND qualified Ethylbenzene 200 9.67 qualified Ethylbenzene 200 11.65 qualified Ethylbenzene 150 12.65 qualified Xylene 300 35.52 qualified Xylene 300 62.83 qualified Xylene 200 68.35 qualified Styrene 300 6.95 qualified Styrene 300 105.38 qualified Styrene 100 ND qualified Formaldehyde 200 128.35 qualified Formaldehyde 200 101.146 qualified Formaldehyde 200 299 Unqualified Acetaldehyde 200 8.47 qualified Acetaldehyde 200 5.997 qualified Acetaldehyde 100 34 qualified Acrolein 100 0.85 qualified Acrolein 100 0.59 qualified Acrolein 50 ND qualified TVOC8000 1136.63 qualified TVOC8000 1570.20 qualified TVOC9000 895.30 qualified

[0074] Example 5

[0075] The rest is the same as Example 2, except that: the main ingredient polyether is Wanhua Chemical polyether polyol F-3128 and Changhua Chemical carbon dioxide-based polyether polyol, TDI+BASF MDI from Baiyin, Gansu, Qingdao Qianzhuo catalyst 7303c delay 0.5 part, 7303c balance 0.7 part, Meside stabilizer 7738LF2 0.4 part, 7735FL2 0.8 part, and South Asia Chemical cross-linking agents DEOA and TEOA. The foam odor generated after chemical reaction is: Changan standard ≤ level 3, actual level (3.0-3.5), Geely standard ≥ level 6.0, actual level (5.5-5.8), BYD standard ≤ level 3, actual level (3.2-3.5) and foam VOC cannot fully meet industry and national standards, drivers and passengers have obvious odor perception and it is harmful to the body, and carbon emissions from foam production are reduced by more than 30%.

[0076] Example 5: Test results of carbon dioxide-based foam odor

[0077] VOC test results of carbon dioxide-based polyether foam

[0078]

[0079]

[0080] The present invention is not limited to the above embodiments. Those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A low-carbon, low-odor, low-VOC carbon dioxide-based polyether foam, characterized by: The composition is composed of component A and component B in a ratio of 100:40-53, wherein component A is composed of the following components in parts by weight: 65-80 parts of polyether polyol, 20-35 parts of carbon dioxide-based polyether polyol, 3-4 parts of foaming agent water, 0.7-1.2 parts of catalyst, 0.8-2 parts of crosslinking agent, and 0.6-1.2 parts of stabilizer. The B component is an isocyanate mixture, which includes TDI and MDI, with the mass percentage of TDI:MDI being 50-80%:50-20%.

2. The low-carbon, low-odor, low-VOC carbon dioxide-based polyether foam according to claim 1, characterized in that: The polyether polyol is produced by Sinochem Dongda (Zibo) Co., Ltd., and the carbon dioxide-based polyol is produced by Changhua Chemical Technology Co., Ltd.

3. The low-carbon, low-odor, low-VOC carbon dioxide-based polyether foam according to claim 1 or 2, characterized in that: The catalyst is a combination of catalysts NE317, NE1050, and NE1082 produced by Evonik Specialty Chemicals.

4. The low-carbon, low-odor, low-VOC carbon dioxide-based polyether foam according to claim 3, characterized in that: The catalysts NE317, NE1050 and NE1082 are combined according to the following weight parts: NE317 0.1-0.3 parts, NE1055 0.3-0.7 parts, NE1082 0.3-0.7 parts, and the total weight is 0.7-1.2 parts.

5. The low-carbon, low-odor, low-VOC carbon dioxide-based polyether foam according to claim 4, characterized in that: The stabilizer is a combination of stabilizers SI1314LO and SI1107L0 from Evonik Specialty Chemicals.

6. The low-carbon, low-odor, low-VOC carbon dioxide-based polyether foam according to claim 5, characterized in that: The stabilizers SI1314LO and SI1107L0 are combined according to the following weight parts: SI1314LO 0.2-0.8 parts, SI1107L0 0.2-0.8 parts, and the total is 0.6-1.2 parts.

7. The low-carbon, low-odor, low-VOC carbon dioxide-based polyether foam according to claim 6, characterized in that: The cross-linking agent is a combination of DEOA and TEOA in any proportion produced by Dow Chemical (China) Co., Ltd.

8. The low-carbon, low-odor, low-VOC carbon dioxide-based polyether foam according to any one of claims 1 to 7, characterized in that: The TDI is recycled TDI from Covestro, and the MDI is M20S from BASF.

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