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Wood-like polyurethane door and preparation method thereof

A polyurethane and wood technology, applied in the field of polyurethane products, can solve the problems of easy cracking, poor product size consistency, and easy warping or bending of wood-like polyurethane doors, and achieve water resistance, no hygroscopicity, good size consistency, and excellent heat insulation The effect of thermal insulation performance

Active Publication Date: 2012-10-31
黄吉力
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the imitation wood polyurethane door is easy to warp or bend, and is easy to crack, and the dimensional consistency of the manufactured product is poor, so it needs further improvement

Method used

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  • Wood-like polyurethane door and preparation method thereof
  • Wood-like polyurethane door and preparation method thereof
  • Wood-like polyurethane door and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Take the following raw materials and mix them into component A: 300-350 relative molecular mass, 4-6 functional polyether polyol 5 kg; 600-700 relative molecular mass, 4-6 functional polyether polyol 350 kg ; 800-900 relative molecular mass, 4-6 functional polyether polyol 20 kg; catalyst DBU0.05 kg; catalyst pentamethyldiethylenetriamine 0.05 kg for foaming; catalyst four for balance Methylhexamethylenediamine 0.55 kg; flame retardant additive triphosphate 5 kg; flame retardant additive melamine 5 kg; flame retardant additive microcapsule red phosphorus flame retardant 5 kg; foam stabilizing additive Silicone oil 1 kg.

[0024] Among them, the catalyst DBU was purchased from Air Chemical Products Co., Ltd., and the flame retardant additive microcapsule red phosphorus flame retardant was purchased from Shanghai Xusen Non-Halogen Smoke Suppressant Flame Retardant Co., Ltd. The following examples also use the same material. Of course, the same material from o...

Embodiment 2

[0028] Example 2: Take the following raw materials and mix them into component A: 300-350 relative molecular mass, 4-6 functional polyether polyol 15 kg; 600-700 relative molecular mass, 4-6 functional polyether polyol 50 kg kg; 800-900 relative molecular mass, 4-6 functional polyether polyol 40 kg; catalyst DBU 0.15 kg; foaming catalyst pentamethyldiethylenetriamine 0.15 kg; balancing catalyst Tetramethylhexamethylenediamine 1.5 kg; flame retardant additive triphosphate 15 kg; flame retardant additive melamine 10 kg; flame retardant additive microcapsule red phosphorus flame retardant 10 kg; Additive silicone oil 2 kg; foaming agent water 0.5 kg; take 130 kg of polyphenylmethane polyisocyanate (Sup5005) and stir well as component B.

[0029] Then put the pre-processed multi-layer board body 3 into the mold, and then prepare according to the following steps: 1) spray the release agent in the mold; 2) heat the mold to 30-70 degrees, then spray the release agent and put The mul...

Embodiment 3

[0030] Example 3: Take the following raw materials and mix them into component A: 300-350 relative molecular mass, 4-6 functional polyether polyol 8 kg; 600-700 relative molecular mass, 4-6 functional polyether polyol 33 kg; 800-900 relative molecular mass, 4-6 functional polyether polyol 25 kg; catalyst DBU 0.05 kg; catalyst pentamethyldiethylenetriamine 0.1 kg for foaming; catalyst four for balance Methylhexamethylenediamine 0.1 kg; flame retardant additive triphosphate 8 kg; flame retardant additive melamine 8 kg; flame retardant additive microcapsule red phosphorus flame retardant 6 kg; Additive silicone oil 1.5 kg; Foaming agent water 0.2 kg; Take polyphenylmethane polyisocyanate (Sup5005) 115 kg and stir well as component B.

[0031] Then put the pre-processed multi-layer board body 3 into the mold, and then prepare according to the following steps: 1) spray the release agent in the mold; 2) heat the mold to 30-70 degrees, then spray the release agent and put The multi-...

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Abstract

The invention discloses a wood-like polyurethane door and a preparation method thereof. The wood-like polyurethane door comprises a door body, wherein a multilayer-spliced multilayer board body having a supporting function is integrally formed in the door body. The preparation method of the wood-like polyurethane door comprises the following steps: heating a die to 30-70 DEG C, putting the multilayer board body in the die; proportionally mixing raw materials; spraying a stripping agent in the die; injecting the mixture in the step 2 into the die until the mixture covers the whole spliced board body, and curing for 30-90 minutes; stripping, taking the product out of the die, and carrying out constant-temperature setting in a thermal insulation chamber; carrying out trimming, deburring and the like on the product; and spraying paint to complete the manufacture of the wood-like polyurethane door. The invention has the advantages of stable dimension, small expansion coefficient, no warping or bending, no cracking, and high dimensional uniformity of the manufactured product.

Description

technical field [0001] The invention relates to a polyurethane product, in particular to a wood-like polyurethane door and a preparation method thereof. Background technique [0002] Since the industrialization of polyurethane foam in the 1950s, a large number of new varieties, new technologies, new processes and new equipment have been developed in an astonishing period. Other countries, such as Japan, France, Italy and other countries, first rely on imported technology to establish polyurethane industrial enterprises, and then continue to expand production to meet the needs of other departments, and the development speed is also very fast. The world's polyurethane production was only over 3,600 tons in 1956, and it had grown to over 270,000 tons by 1967. The polyurethane foam reached 1.25 million tons in 1972 and increased to 4.5 million tons in 1990. In 1999, it reached 8 million tons. It is expected to continue to grow at an annual growth rate of 12% to 14% in the fut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E06B3/70C08G18/66C08G18/48C08G18/32C08K5/521C08K5/3492C08K3/02
CPCC08K3/32C08K5/5406C08K3/02C08K5/34922B29C33/58C08G18/1808C08G18/2063C08G18/6677C08G18/7664C08G2110/0025C08G2110/0083C08L75/08
Inventor 黄吉力
Owner 黄吉力
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