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Colorless and transparent polyurethane rotary forming model material and preparation method thereof

A rotational molding, polyurethane technology, used in other household appliances, household components, household appliances, etc., can solve the problem of single material, and achieve the effect of good transparency, strong three-dimensional effect and excellent toughness

Inactive Publication Date: 2017-09-29
SHANGHAI HECHENG POLYMER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current market is mainly based on opaque and light yellow polyurethane model materials, the material is single, and the appearance is mainly color-coated.

Method used

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  • Colorless and transparent polyurethane rotary forming model material and preparation method thereof
  • Colorless and transparent polyurethane rotary forming model material and preparation method thereof
  • Colorless and transparent polyurethane rotary forming model material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Synthesis of component A: add colorless transparent polyether polyol GE-303 40kg, MN-500 50kg, DL-4008kg in sequence, and dehydrate to moisture under the condition of temperature 100℃~110℃ and pressure ≤-0.095MPa Less than 0.05%, then lower the temperature to 65-70°C and add 0.2kg of leveling agent BYK333, 0.1kg of defoamer BYK056, 1kg of water-removing agent ALT101, 0.2kg of antioxidant PU68, and 2-hydroxyl-4-normal UV stabilizer 0.2kg of octyloxybenzophenone, stir evenly, vacuum dehydrate at 90-110°C for 1-3h, cool down to room temperature, add catalyst triethylenediamine 0.2kg, stannous octoate 0.1kg, stir evenly, and obtain A component;

[0028] (2) Synthesis of component B: 10kg of colorless transparent polyether polyol GE-210, 20kg of GE-330NG and 40kg of polyisocyanate methylene diphenyl diisocyanate, 30kg of carbodiimide modified MDI in 60 ℃~80℃ for 2 hours to make component B; the NCO content of the prepolymer of component B is 21% (test standard reference:...

Embodiment 2

[0032] (1) Synthesis of component A: add colorless transparent polyether polyol DV-125 50kg, MN-500 40kg, DL-4008kg in sequence, and dehydrate to moisture under the condition of temperature 100℃~110℃ and pressure ≤-0.095MPa Less than 0.05%, then lower the temperature to 65-70°C and add 0.2kg of leveling agent BYK333, 0.1kg of defoamer BYK056, 1kg of water-removing agent ALT101, 0.2kg of antioxidant PU68, and 2-hydroxyl-4-normal UV stabilizer 0.2kg of octyloxybenzophenone, stir evenly, vacuum dehydrate at 90-110°C for 1-3h, cool down to room temperature, add catalyst triethylenediamine 0.2kg, stannous octoate 0.1kg, stir evenly, and obtain A component;

[0033] (2) Synthesis of component B: Add 20kg of colorless transparent polyether polyol GE-330NG and 50kg of polyisocyanate methylene diphenyl diisocyanate in sequence, and react with 30kg of carbodiimide modified MDI at 60℃~80℃ 2 hours, make B component; B component prepolymer NCO content is preferably 25% (test standard refer...

Embodiment 3

[0039] (1) Synthesis of component A: add colorless transparent polyether polyol NT-403A 20kg, MN-500 60kg, DL-40018kg in sequence, and dehydrate to moisture at a temperature of 100℃~110℃ and a pressure of ≤-0.095MPa Less than 0.05%, then lower the temperature to 65-70°C and add 0.2kg of leveling agent BYK333, 0.1kg of defoamer BYK056, 1kg of water-removing agent ALT101, 0.2kg of antioxidant PU68, and 2-hydroxyl-4-normal UV stabilizer 0.2kg of octyloxybenzophenone, stir evenly, vacuum dehydrate at 90-110°C for 1-3h, cool down to room temperature, add 0.2kg of catalyst triethylenediamine, stir evenly, and obtain component A;

[0040] (2) Synthesis of component B: Put in 10kg of colorless transparent polyether polyol GE-210 and 60kg of polyisocyanate methylene diphenyl diisocyanate in sequence, and react with 30kg of carbodiimide modified MDI at 60℃~80℃ 2 hours, make B component; B component prepolymer NCO content is preferably 28% (test standard reference: HG / T 2409-1992);

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Abstract

The invention relates to a colorless and transparent polyurethane rotary forming model material and a preparation method thereof. The colorless and transparent polyurethane rotary forming model material comprises a component A and a component B, wherein a mass ratio of the component A to the component B is (1:0.2) to (1:4), wherein the component A is prepared from 85 to 95 weight percent of polyether polyol, 0.1 to 5 weight percent of catalyst, 0.1 to 5 weight percent of flatting agent, 0.1 to 5 weight percent of defoaming agent, 0.5 to 5 weight percent of dewatering agent, 0.2 to 0.5 weight percent of antioxidant, and 0.2 to 0.5 weight percent of ultraviolet stabilizer; and the component B is prepared from 50 to 60 weight percent of polyisocyanates and 40 to 60 weight percent of polyether polyol. The two components A and B are formed into a polyurethane model in a rotational molding rotating device. Compared with an existing polyurethane model in the market, the product has the characteristics of colorlessness, transparency, good heat resistance, excellent toughness and the like, and a rotary forming processing technology is adopted.

Description

technical field [0001] The invention belongs to the field of model materials and its preparation, in particular to a colorless and transparent polyurethane rotational molding model material and a preparation method thereof. Background technique [0002] At present, there are two main methods of forming clothing models: rotational molding and blow molding, especially the rotational molding method is common. Rotational molding, also known as rotational molding, rotary molding, rotary molding, etc., is a hollow molding method for thermoplastics. The method is to add plastic raw materials into the mold first, then the mold is continuously rotated along two vertical axes and heated, and the plastic raw materials in the mold are gradually and uniformly coated and melted and adhered to the mold cavity under the action of gravity and heat energy. On the entire surface, it is formed into the desired shape, and then cooled and shaped to form a product. [0003] At present, the rotat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08K5/132B29C41/04B29L31/30
CPCC08G18/4804B29C41/04B29L2031/7028C08K5/132
Inventor 赵朝阳齐文斌张毅董雨磊
Owner SHANGHAI HECHENG POLYMER TECH CO LTD