Novel polyurethane trunk cover plate production process

Abstract

The invention discloses a novel polyurethane trunk cover plate production process which comprises the following steps: spraying a polyurethane foaming raw material on glass fabric, and then putting the glass fabric into a mold for molding; putting the molded substrate as an insert into a mold, and then injecting a polyurethane raw material with a self-demolding function; and finally, taking out the product from the mold, and trimming to obtain a finished product. By adopting the production process of the polyurethane trunk cover plate, the production efficiency can be improved, the formaldehyde emission can be reduced, and the polyurethane-coated cover plate is easy to clean and maintain. The polyurethane foaming raw material can be used for bonding two irregular contact surfaces, can be used for uniformly filling the two irregular contact surfaces, has good thermal insulation property and higher viscosity, and is suitable for popularization and application. The premixed polyether polyol is an all-water foaming system, has no destructive effect on the ozone layer, and has the advantage of environmental protection.

Description

Technical Field

[0001] The invention relates to the technical field of polyurethane foaming, in particular to a novel production process of a polyurethane luggage trunk cover. Background Art

[0002] Polyurethane is widely used in aviation, railways, construction, sports and other fields; used for surface finishing of wooden furniture and metal; used for thermal insulation and cold preservation of storage tanks, pipelines, cold storage, beer, fermentation tanks, fresh-keeping barrels, thermal insulation and waterproofing of building construction, and can also be used for prefabricated polyurethane sheets; can be used to manufacture plastic products, wear-resistant synthetic rubber products, synthetic fibers, hard and soft foam plastic products, adhesives and coatings, etc.; used for surface finishing of various types of wooden products, chemical equipment, telecommunications equipment and instruments and various means of transportation.

[0003] When using polyurethane to make trunk covers, the traditional process is to spray the polyurethane foaming material on the glass fiber cloth, then put it in a mold to form it, trim it after forming, then brush glue on it, and then cover it with a layer of carpet surface to complete the production of the finished product. Its production efficiency is low, the glue releases a lot of formaldehyde, and the carpet surface is not easy to clean after it is dirty. Summary of the invention

[0004] The purpose of the present invention is to provide a novel polyurethane luggage trunk cover production process to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a novel polyurethane luggage trunk cover production process, comprising the following steps:

[0006] Step S1, spraying the polyurethane foaming raw material on the glass fiber cloth, and then placing it in a mold for molding;

[0007] Step S2, placing the substrate formed in step S1 into the mold as an insert, and then injecting a polyurethane raw material with a self-release function;

[0008] Step S3, taking the product out of the mold and trimming it to obtain the finished product.

[0009] Preferably, the polyurethane foaming raw materials in step S1 include a white material component and a black material component, and the mass ratio of the white material component to the black material component is 1.1-1.4; the white material component includes: hydroxypropyl methacrylate HPMA, acrylate monomer, castor oil, NJ6305 and a catalyst; the black material component includes: HT-600, IPDI, and an initiator TBPB.

[0010] Preferably, the weight ratio of each raw material in the white material component is: 1% to 30% hydroxypropyl methacrylate HPMA, 15% to 40% acrylate monomer, 20% to 40% castor oil, 10% to 40% NJ6305 and 0.01% to 0.05% catalyst.

[0011] Preferably, the weight ratio of each raw material in the black material component is: 20% to 70% HT-600, 20% to 70% IPDI, and 1% to 5% initiator TBPB.

[0012] Preferably, the catalyst is an organotin catalyst.

[0013] Preferably, in step S2, the polyurethane raw material consists of a composite polyether and polyphenyl polymethylene polyisocyanate, and the mass ratio of the composite polyether to the polyphenyl polymethylene polyisocyanate is 1:1 to 1:1.5.

[0014] Preferably, the composite polyether is composed of the following components in weight ratio: 60% to 80% of polyether polyol EP-330N, 0.6% to 1.5% of non-hydrolyzable surfactant L-580, 15% to 20% of water, 8% to 15% of nonylphenol polyoxyethylene ether NP-10, 0.3% to 0.5% of foaming catalyst PC52, 3% to 5% of foaming catalyst NE300 and 8% to 15% of diethyl ethyl phosphate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The polyurethane luggage trunk cover production process adopted in the present invention can improve production efficiency and reduce formaldehyde emissions. The polyurethane-coated cover is easy to clean and maintain.

[0017] (2) The polyurethane foaming raw material of the present invention can be used to bond two irregular contact surfaces and can be evenly filled on the two irregular contact surfaces. It has good thermal insulation performance and high viscosity and is suitable for promotion and application.

[0018] (3) The combined polyether of the present invention is a fully water foaming system, which has no destructive effect on the ozone layer and has environmental advantages.

[0019] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a production process flow chart of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.

[0024] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] In order to make the technical personnel in this field better understand the present application scheme, the following will be combined with the attached Figure 1 , clearly and completely describe the technical solutions in the embodiments of the present application.

[0026] Example 1

[0027] A novel polyurethane luggage trunk cover production process comprises the following steps:

[0028] Step S1, spraying the polyurethane foaming raw material on the glass fiber cloth, and then placing it in a mold for molding;

[0029] Step S2, placing the substrate formed in step S1 into the mold as an insert, and then injecting a polyurethane raw material with a self-release function;

[0030] Step S3, taking the product out of the mold and trimming it to obtain the finished product.

[0031] Preferably, the polyurethane foaming raw materials in step S1 include a white material component and a black material component, and the mass ratio of the white material component to the black material component is 1.2; the white material component includes: hydroxypropyl methacrylate HPMA, acrylate monomer, castor oil, NJ6305 and a catalyst; the black material component includes: HT-600, IPDI, and an initiator TBPB.

[0032] The weight ratio of each raw material in the white material component is: 18.97% hydroxypropyl methacrylate HPMA, 16% acrylate monomer, 35% castor oil, 30% NJ6305 and 0.03% catalyst. The weight ratio of each raw material in the black material component is 40% HT-600, 57% IPDI, and 3% initiator TBPB. The catalyst used is an organic tin catalyst.

[0033] In step S2, the polyurethane raw material is composed of a composite polyether and polyphenyl polymethylene polyisocyanate, and the mass ratio of the composite polyether to the polyphenyl polymethylene polyisocyanate is 1:1.3.

[0034] The composite polyether is composed of the following components in weight ratio: 62% of polyether polyol EP-330N, 0.8% of non-hydrolyzable surfactant L-580, 16% of water, 8% of nonylphenol polyoxyethylene ether NP-10, 0.4% of foaming catalyst PC52, 4% of foaming catalyst NE300 and 8.8% of diethyl ethyl phosphate.

[0035] Example 2

[0036] A novel polyurethane luggage trunk cover production process comprises the following steps:

[0037] Step S1, spraying the polyurethane foaming raw material on the glass fiber cloth, and then placing it in a mold for molding;

[0038] Step S2, placing the substrate formed in step S1 into the mold as an insert, and then injecting a polyurethane raw material with a self-release function;

[0039] Step S3, taking the product out of the mold and trimming it to obtain the finished product.

[0040] Preferably, the polyurethane foaming raw materials in step S1 include a white material component and a black material component, and the mass ratio of the white material component to the black material component is 1.2; the white material component includes: hydroxypropyl methacrylate HPMA, acrylate monomer, castor oil, NJ6305 and a catalyst; the black material component includes: HT-600, IPDI, and an initiator TBPB.

[0041] The weight ratio of each raw material in the white material component is: 15% hydroxypropyl methacrylate HPMA, 23% acrylate monomer, 31% castor oil, 30.96% NJ6305 and 0.04% catalyst. The weight ratio of each raw material in the black material component is: 55% HT-600, 41% IPDI, 4% initiator TBPB. The catalyst used is an organic tin catalyst.

[0042] Preferably, the polyurethane raw material in step S2 is composed of a composite polyether and polyphenyl polymethylene polyisocyanate, and the mass ratio of the composite polyether to the polyphenyl polymethylene polyisocyanate is 1: 4. The composite polyether involved is composed of the following components in weight ratio: polyether polyol EP-330N 72%, non-hydrolyzable surfactant L-580 1.2%, water 15% to 20%, nonylphenol polyoxyethylene ether NP-10 12%, foaming catalyst PC52 0.4%, foaming catalyst NE300 3% and diethyl ethyl phosphate 11.4%.

[0043] Example 3

[0044] A novel polyurethane luggage trunk cover production process comprises the following steps:

[0045] Step S1, spraying the polyurethane foaming raw material on the glass fiber cloth, and then placing it in a mold for molding;

[0046] Step S2, placing the substrate formed in step S1 into the mold as an insert, and then injecting a polyurethane raw material with a self-release function;

[0047] Step S3, taking the product out of the mold and trimming it to obtain the finished product.

[0048] Preferably, the polyurethane foaming raw materials in step S1 include a white material component and a black material component, and the mass ratio of the white material component to the black material component is 1.4; the white material component includes: hydroxypropyl methacrylate HPMA, acrylate monomer, castor oil, NJ6305 and a catalyst; the black material component includes: HT-600, IPDI, and an initiator TBPB.

[0049] The weight ratio of each raw material in the white material component is: 1% to 30% of hydroxypropyl methacrylate HPMA, 26% of acrylate monomer, 35% of castor oil, 38.96% of NJ6305 and 0.04% of catalyst.

[0050] The weight ratio of each raw material in the black material component is: 42% HT-600, 57% IPDI, 3% initiator TBPB. The catalyst used is an organic tin catalyst.

[0051] In step S2, the polyurethane raw material is composed of a composite polyether and polyphenyl polymethylene polyisocyanate, and the mass ratio of the composite polyether to the polyphenyl polymethylene polyisocyanate is 1:1.5. The composite polyether is composed of the following components in weight ratio: 61% of polyether polyol EP-330N, 1.5% of non-hydrolyzable surfactant L-580, 15% of water, 8% of nonylphenol polyoxyethylene ether NP-10, 0.5% of foaming catalyst PC52, 4% of foaming catalyst NE300 and 10% of diethyl ethyl phosphate.

[0052] The polyurethane luggage trunk cover production process used in the invention can improve production efficiency, reduce formaldehyde emissions, and the polyurethane-coated cover is easy to clean and maintain. The polyurethane foaming raw material can bond two irregular contact surfaces and can be evenly filled on the two irregular contact surfaces. It has good thermal insulation performance and high viscosity, and is suitable for promotion and application. The combined polyether of the present invention is a fully water foaming system, which has no destructive effect on the ozone layer and has environmental advantages.

[0053] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A novel polyurethane luggage trunk cover production process, characterized in that: The following steps are involved: Step S1, spraying the polyurethane foaming raw material on the glass fiber cloth, and then placing it in a mold for molding; Step S2, placing the substrate formed in step S1 into the mold as an insert, and then injecting a polyurethane raw material with a self-release function; Step S3, taking the product out of the mold and trimming it to obtain the finished product.

2. A novel polyurethane luggage trunk cover production process according to claim 1, characterized in that: The polyurethane foaming raw material in step S1 includes a white material component and a black material component, and the mass ratio of the white material component to the black material component is 1.1-1.4; The white material components include: hydroxypropyl methacrylate HPMA, acrylate monomer, castor oil, NJ6305 and a catalyst; The black material components include: HT-600, IPDI, and initiator TBPB.

3. A novel polyurethane luggage trunk cover production process according to claim 2, characterized in that: The weight ratio of each raw material in the white material component is: 1% to 30% of hydroxypropyl methacrylate HPMA, 15% to 40% of acrylate monomer, 20% to 40% of castor oil, 10% to 40% of NJ6305 and 0.01% to 0.05% of catalyst.

4. A novel polyurethane luggage trunk cover production process according to claim 2, characterized in that: The weight ratio of each raw material in the black material component is: 20% to 70% HT-600, 20% to 70% IPDI, and 1% to 5% initiator TBPB.

5. A novel polyurethane luggage trunk cover production process according to claim 2, characterized in that: The catalyst is an organotin catalyst.

6. A novel polyurethane luggage trunk cover production process according to claim 1, characterized in that: In the step S2, the polyurethane raw material is composed of a combination of polyether and polyphenyl polymethylene polyisocyanate, and the mass ratio of the combination of polyether and polyphenyl polymethylene polyisocyanate is 1:1 to 1:1.

5.

7. A novel polyurethane luggage trunk cover production process according to claim 6, characterized in that: The composite polyether is composed of the following components in weight ratio: 60% to 80% of polyether polyol EP-330N, 0.6% to 1.5% of non-hydrolyzable surfactant L-580, 15% to 20% of water, 8% to 15% of nonylphenol polyoxyethylene ether NP-10, 0.3% to 0.5% of foaming catalyst PC52, 3% to 5% of foaming catalyst NE300 and 8% to 15% of diethyl ethyl phosphate.

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