CN101503504B - Preparation of polyurethane rigid foam wood-like material - Google Patents
Preparation of polyurethane rigid foam wood-like material Download PDFInfo
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- CN101503504B CN101503504B CN2008102444069A CN200810244406A CN101503504B CN 101503504 B CN101503504 B CN 101503504B CN 2008102444069 A CN2008102444069 A CN 2008102444069A CN 200810244406 A CN200810244406 A CN 200810244406A CN 101503504 B CN101503504 B CN 101503504B
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Abstract
The invention describes a preparation method of a rigid polyurethane foam wood-imitation material. The preparation method comprises the following steps: taking a mixture of polyether glycol, a catalyst, a foam stabilizer, a foaming agent, a fire retardant and the like as a white material, taking polymethylene polyphenyl isocyanate as a black material, injecting a certain amount of the mixed materials into a mould at temperature of 23-25 DEG C of the white material and the black material with mechanical stirring rate of 2000-3000r/min and mass ratio of the white material to the black material as 100/105-110, and demoulding after being at constant temperature of 35 DEG C for half an hour to obtain the rigid polyurethane foam wood-imitation material. The polyether glycol in the white material is a mixture of GR-4110, GR-403 and GE-210; the catalyst is a mixture of SFC, A33 and PC-41; the foam stabilizer is AK-8805, and the foaming agent is a mixture of HCFC-141b and H2O; and the fire retardant is DMMP. The black material is PM-200, Suprasec 5005 or Desmodur 44V20L.
Description
Technical field
The present invention relates to a kind of preparation method of polyurethane rigid foam wood-like material, specifically, the present invention relates to a kind of mixture with polyether glycol, catalyzer, suds-stabilizing agent, whipping agent, fire retardant etc. is white material, be black material with poly methylene poly phenyl poly isocyanate (PAPI), the two mixes, reacts the method that moulding prepares polyurethane rigid foam wood-like material under certain condition by a certain percentage.
Background technology
Natural timber of many uses is requisite materials used in people's productive life.But the several years; lack enough protections owing to the overexploitation of the forest reserves and to the existing forest reserves; caused a large amount of losses of Ecological environment worsening and water and soil, thereby the exploitation and the exploitation of the natural forest resourceies of control have been give stricted orders, the prevention denudation by some countries.So the substitution problem of timber causes people's extensive concern gradually.
The existing raw material that is used for synthetic wood has multiple, generally with inorganic or organic filler and the manufacturing of tackiness agent employing mould pressing process.Mineral filler has lime carbonate, talcum powder etc., organic filler mainly is natural fibers such as straw, stalk and crudefiber crop, the resin that is used for imitated wood material mainly contains polyvinyl chloride, polyester, polystyrene, ABS etc., but the ubiquity goods are big for environment pollution, goods are short work-ing life, problems such as intensity difference.
The polyurethane structural porous plastics is 20th century a kind of middle-high density poromerics of growing up of the mid-1970s, because the rigidity and the physical strength height of this material, density is low, but supporting capacity is strong, can substitute other materials such as the bigger conventional gypsum plate of density, polyester, glass reinforced plastic, be used for synthetic wood.
In recent years, polyurethane rigid foam wood-like material has become a frontier of various countries' researcher research and development.Many traditional Application Areas at natural timber, polyurethane rigid foam wood-like material part has substituted timber, as having obtained using widely at aspects such as wood furniture, door and window, electric appliance casing, tub, engraving finishing device, picture frames, and this kind material can be followed closely, can dig, can saw, and outward appearance, feel, density and natural timber are similar, also have moistureproofly, anti-damage by worms, fire-retardant, the characteristics that are better than timber such as need not to paint.
Polyurethane rigid foam wood-like material is the structural rigid urethane foam of a class middle-high density, and it has fine foam structure, and density is usually above 0.2g/cm
3The polyurethane rigid foam plastic that is used for synthetic wood has fine and close tough and tensile epidermis, make this synthetic materials not only have the outward appearance and the density range of timber, and the bulk strength of goods is higher, and the core of product can be accomplished lower density, thereby can alleviate the weight of product.
The polyurethane imitation wood material is compared tangible advantage with natural timber be can be by die design, molded batch process different shape, moulding process is simple, and product repeats excellent property, production efficiency height, particularly accurately duplicate the carving handicraft article of various complexity, form is true to nature, and large-scale industrial production can be realized by product in the time and labour saving, production technique is simple, once shaped production efficiency height.Strength ratio natural timber height, density is lower than natural timber, resistance to acids and bases and antiseptic property excellence.In addition, this kind material can have very strong flame retardant properties as required, and the oxygen index of goods and smoke density can be regulated within the specific limits, satisfies different service requirementss.Thereby the alternative natural timber of polyurethane rigid foam wood-like material is subjected to user's welcome deeply as all kinds of high-grade goods, so nearly 10 years China's polyurethane rigid foam wood-like materials have obtained developing rapidly in industries such as furniture wood industry, decorative engineering.
Summary of the invention
The invention provides a kind of preparation method of polyurethane rigid foam wood-like material, mixture with polyether glycol, catalyzer, suds-stabilizing agent, whipping agent, fire retardant etc. is white material, be black material with poly methylene poly phenyl poly isocyanate (PAPI), the two mixes, pours into a mould, reacts moulding under certain condition by a certain percentage and prepares polyurethane rigid foam wood-like material.
The present invention realizes by following measure:
The invention discloses a kind of preparation method of polyurethane rigid foam wood-like material, this kind imitated wood material mixes, reacts moulding by white material and black material and makes under certain reaction condition, certain proportion.White material is made up of the blend of polyether glycol, catalyzer, suds-stabilizing agent, whipping agent, fire retardant etc., and black material is poly methylene poly phenyl poly isocyanate.
The present invention is with 100 parts of polyether glycols, 1.3～1.5 parts of catalyzer, 1.5～2.0 parts of suds-stabilizing agents, 8.3～9.5 parts of whipping agents, 1.0～1.2 parts of linking agent glycerine, and the mixture that fire retardant is 7～8 parts is white material; Be black material with poly methylene poly phenyl poly isocyanate, white material mixes, reacts under 23-25 ℃ temperature with black material; Stirring velocity during mixing is 2000-3000r/min, and mixed white material and black material inject mould, and at 35 ± 2 ℃, constant temperature 0.5-1 hour, the demoulding obtained goods; Described white material is 100/105-110 with the mass ratio of black material; Described unit is a mass parts.
The polyurethane rigid foam wood-like material of the present invention preparation, the polyether glycol in the described white material are the mixture of 10～20 parts of 5～15 parts of 70～78 parts of polyether glycol GR-4110, GR-403 and GE-210, and unit is a mass parts.
Described catalyzer is the mixture of SFC, A33 and PC-41; Add in per 100 parts of polyether glycols: 0.3～0.4 part of 0.4～0.5 part of 0.5～0.6 part of SFC, A33 and PC-41, unit are mass parts.
The polyurethane rigid foam wood-like material of the present invention's preparation, the suds-stabilizing agent in the described white material is AK-8805, the add-on of suds-stabilizing agent AK-8805 is to add 1.5～2.0 parts in per 100 parts of polyether glycols;
Whipping agent is HCFC-141b and H
2The mixture of O; Add in per 100 parts of polyether glycols: 8～9 parts of HCFC-141b and H
20.3～0.5 part of O, unit are mass parts.
The polyurethane rigid foam wood-like material of the present invention's preparation, the suds-stabilizing agent in the described white material is AK-8805, and in per 100 parts of polyether glycols, the add-on of fire retardant is 7～8 parts of DMMP, and unit is a mass parts.
The polyurethane rigid foam wood-like material of the present invention preparation, described white material be meant mechanical stirring by a certain percentage such as polyether glycol, catalyzer, suds-stabilizing agent, whipping agent, fire retardant, mixes to form.
The polyurethane rigid foam wood-like material of the present invention's preparation, described black material poly methylene poly phenyl poly isocyanate is by the different commodity that producer named PM-200, Suprasec 5005 by name or Desmodur 44V20L.
The present invention mixes, reacts moulding under certain condition with white material and black material and makes polyurethane rigid foam wood-like material, and raw material is easy to get, technology is simple, and the product performance good reproducibility can be realized producing in batches.And the epidermis of goods is thick, intensity good, oxygen index and smoke density can be regulated in certain limit, can satisfy different service requirementss, alternative natural timber is as all kinds of high-grade goods, for the suitability for industrialized production of polyurethane rigid foam wood-like material provides a valid approach, thereby characteristics of the present invention are very outstanding.
Embodiment
Embodiment one
Catalyzer is the mixture of dimethylcyclohexylamine SFC, triethylene diamine and ethylene glycol A33 and Hexahydrotriazine PC-41; Suds-stabilizing agent is AK-8805, and whipping agent is a fluorine ethylene dichloride HCFC-141b and water H
2The mixture of O; Fire retardant is inferior adjacent acid esters DMMP.(commodity are by name: PM-200, Suprasec 5005 or Desmodur 44V20L for poly methylene poly phenyl poly isocyanate for black material; Described PM-200, Suprasec5005 or Desmodur 44V20L are the trades mark of different manufacturers).
Each raw-material proportioning in the white material of table 1
| Raw material is formed | Mass ratio | Raw material is formed | Mass ratio |
| Polyether glycol GR-4110 polyether glycol GR-403 polyether glycol GR-210 blowing agent H 2O catalyst S FC catalyst A 33 | 70 10 20 0.3 0.5 0.5 | Catalyst P C-41 suds-stabilizing agent AK-8805 linking agent glycerine Glycerol fire retardant DMMP blowing agent H CFC-141b | 0.3 1.5 1.0 6.5 8 |
A kind of among PM-200, Suprasec 5005 or the Desmodur 44V20L of black material;
The temperature of white material of control and black material is 23-25 ℃, the mechanical stirring speed of equipment is 2000-3000r/min, according to white material/black material (mass ratio) is that 100/110 ratio is expelled to a certain amount of combination material in the mould, demoulding half an hour of 35 ℃ of constant temperature can obtain the polyurethane rigid foam wood-like material finished product.The finished product epidermis smooth finish that makes is good, basic free of pinholes and bubble, and epidermis is hard, the integral hardness height.
The placement of sample after the moulding was measured performance after 24 hours.The end properties index is as shown in table 2:
The physical index of table 2 polyurethane rigid foam wood-like material
| Test index | Physics value | Test index | Physics value |
| Density/Kgm -3Compressive strength/MPa flexural strength/Mpa modulus in flexure/MPa | 236 4.3 10.7 362 | Deformation temperature/℃ shock strength/KJm -2Hardness (the oxygen index % of Shao-D) | 52 3.0 43 23.5 |
Each raw-material proportioning in the white material of embodiment two tables 3
| Raw material is formed | Mass ratio | Raw material is formed | Mass ratio |
| GR-4110GR-403GR-210H 2OSFCA33 | 70 15 10 0.4 0.55 0.45 | PC-41 AK-8805 Glycerol fire retardant DMMP HCFC-141b | 0.37 1.8 1.0 7.0 8.6 |
A kind of among PM-200, Suprasec 5005 or the Desmodur 44V20L of black material;
The temperature of white material of control and black material is 23-25 ℃, the mechanical stirring speed of equipment is 2000-3000r/min, according to white material/black material (mass ratio) is that 100/105 ratio is expelled to a certain amount of combination material in the mould, demoulding half an hour of 35 ℃ of constant temperature can obtain the polyurethane rigid foam wood-like material finished product.The finished product epidermis smooth finish that makes is good, basic free of pinholes and bubble, and epidermis is hard, the integral hardness height.
The placement of sample after the moulding was measured performance after 24 hours.The end properties index is as shown in table 4:
The physical index of table 4 polyurethane rigid foam wood-like material
Each raw-material proportioning in the white material of embodiment three tables 5
| Raw material is formed | Mass ratio | Raw material is formed | Mass ratio |
| GR-4110 GR-403 GR-210 H 2O SFC A33 | 78 7 15 0.5 0.6 0.4 | PC-41 AK-8805 Glycerol DMMP HCFC-141b | 0.34 1.6 1.1 7.5 8.3 |
A kind of among PM-200, Suprasec 5005 or the Desmodur 44V20L of black material;
The temperature of white material of control and black material is 23-25 ℃, the mechanical stirring speed of equipment is 2000-3000r/min, according to white material/black material (mass ratio) is that 100/110 ratio is expelled to a certain amount of combination material in the mould, demoulding half an hour of 35 ℃ of constant temperature can obtain the polyurethane rigid foam wood-like material finished product.The finished product epidermis smooth finish that makes is good, basic free of pinholes and bubble, and epidermis is hard, the integral hardness height.
The placement of sample after the moulding was measured performance after 24 hours.The end properties index is as shown in table 6:
The physical index of table 6 ammonia ester rigid foam wood-like material
| Test index | Physics value | Test index | Physics value |
| Density/Kgm -3Compressive strength/MPa flexural strength/Mpa modulus in flexure/MPa | 256 5.9 12.7 403 | Deformation temperature/℃ shock strength/KJm -2Hardness (the oxygen index % of Shao-D) | 61 3.8 53 27.1 |
Each raw-material proportioning in the white material of embodiment four tables 7
| Raw material is formed | Mass ratio | Raw material is formed | Mass ratio |
| GR-4110 GR-403 GR-210 H 2O SFC A33 | 80 5 15 0.45 0.6 0.5 | PC-41 AK-8805 Glycerol DMMP HCFC-141b | 0.4 2.0 1.2 8 9 |
A kind of among PM-200, Suprasec 5005 or the Desmodur 44V20L of black material;
The temperature of white material of control and black material is 23-25 ℃, the mechanical stirring speed of equipment is 2000-3000r/min, according to white material/black material (mass ratio) is that 100/110 ratio is expelled to a certain amount of combination material in the mould, demoulding half an hour of 35 ℃ of constant temperature can obtain the polyurethane rigid foam wood-like material finished product.The finished product epidermis smooth finish that makes is good, basic free of pinholes and bubble, and epidermis is hard, the integral hardness height.
The placement of sample after the moulding was measured performance after 24 hours.The end properties index is as shown in table 8:
The physical index of table 8 polyurethane rigid foam wood-like material
| Test index | Physics value | Test index | Physics value |
| Density/Kgm -3Compressive strength/MPa flexural strength/Mpa modulus in flexure/MPa | 223 3.8 9.3 327 | Deformation temperature/℃ shock strength/KJm -2Hardness (the oxygen index % of Shao-D) | 46 2.7 39 25.6 |
Claims (1)
1. the preparation method of a polyurethane rigid foam wood-like material, it is characterized in that, with 100 parts of polyether glycols, 1.3～1.5 parts of catalyzer, 1.5～2.0 parts of suds-stabilizing agents, 8.3～9.5 parts of whipping agents, 1.0～1.2 parts of linking agent glycerine, the mixture that fire retardant is 7～8 parts is white material; Be black material with poly methylene poly phenyl poly isocyanate, white material mixes, reacts under 23～25 ℃ temperature with black material; Stirring velocity during mixing is 2000～3000r/min, and mixed white material and black material inject mould, at 35 ± 2 ℃, and constant temperature 0.5～1 hour, the demoulding obtains goods; Described white material is 100/105～110 with the mass ratio of black material;
Polyether glycol in the described white material is the mixture of 10～20 parts of 5～15 parts of 70～78 parts of polyether glycol GR-4110, polyether glycol GR-403 and polyether glycol GE-210;
Described catalyzer is the mixture of catalyst S FC, catalyst A 33 and catalyst P C-41; Add in per 100 parts of polyether glycols: 0.5～0.6 part of SFC, A330.4～0.5 part and PC-410.3～0.4 part;
Described whipping agent is HCFC-141b and H
2The mixture of O; Add in per 100 parts of polyether glycols: 8～9 parts of HCFC-141b and H
20.3～0.5 part of O, above-mentioned unit are mass parts;
Described suds-stabilizing agent is AK-8805; Described linking agent is a glycerine; Described fire retardant is DMMP;
Described black material is a kind of among PM-200, Suprasec 5005 or the Desmodur 44V20L;
The density of goods is 200～300Kgm
-3, compressive strength is 3.5～6.0MPa, shock strength is 2.5～4.0KJm
-2, Shao Shi-D hardness is 90～95 degree, oxygen index is 23.0～27.5%.
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| CN101724255B (en) * | 2009-12-09 | 2012-10-31 | 南京林业大学 | Wood powder reinforced polyurethane wood-imitation material for furniture and production method thereof |
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