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Castor oil composite material and castor oil-based polyurethane elastomer prepared by using it

A technology of polyurethane elastomers and composite materials, applied in the field of castor oil-based polyurethane elastomers, which can solve problems such as poor toughness and easy disconnection, and achieve the effects of increasing elongation at break, reducing viscosity, and promoting dissolution

Active Publication Date: 2020-07-07
JIAHUA CHEM MAOMING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the technical problem to be solved in the present invention is to overcome the problem that the polyurethane elastomer prepared from castor oil as raw material in the prior art cannot have high hardness and high tensile strength, but poor toughness and easy disconnection, and then provide a castor oil Sesame oil-based composite material, when the material is used to prepare polyurethane elastomers, it can improve its elongation at break and flexibility while ensuring hardness and tensile strength

Method used

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  • Castor oil composite material and castor oil-based polyurethane elastomer prepared by using it
  • Castor oil composite material and castor oil-based polyurethane elastomer prepared by using it

Examples

Experimental program
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Effect test

Embodiment 1

[0040] The present embodiment provides a kind of castor oil-based polyurethane elastomer, and the synthetic raw material of castor oil-based polyurethane elastomer comprises castor oil composite material 100g, liquefied diphenylmethane diisocyanate (MDI) 21g; Castor oil composite material uses castor oil, Acrylic monomers and epoxy compounds are used as raw materials.

[0041] The preparation method of above-mentioned castor oil-based polyurethane elastomer is as follows:

[0042] (1) preparation of castor oil composite material

[0043] S1. Add 190 g of castor oil into a four-necked flask with a stirring device, and raise the temperature to 50° C. After mixing 2g of methyl methacrylate, 2g of isooctyl acrylate, 6g of hydroxyethyl acrylate and 0.1g of azobisisobutyronitrile, add them dropwise to castor oil within 10 hours; h.

[0044] S2. Remove the gas and moisture in the four-necked flask, add 0.04g of potassium hydroxide and 100g of propylene oxide and ripen at 140°C for...

Embodiment 2

[0048] The present embodiment provides a kind of castor oil-based polyurethane elastomer, and the synthetic raw material of castor oil-based polyurethane elastomer comprises castor oil composite material 100g, liquefied diphenylmethane diisocyanate (MDI) 41g; Castor oil composite material uses castor oil, Acrylic monomers and epoxy compounds are used as raw materials.

[0049] The preparation method of above-mentioned castor oil-based polyurethane elastomer is as follows:

[0050] (1) preparation of castor oil composite material

[0051] S1. Add 160 g of castor oil into a four-necked flask with a stirring device, and raise the temperature to 85° C. After mixing 10g of isopropyl acrylate, 8g of isooctyl acrylate, 12g of hydroxyethyl acrylate, 10g of isobornyl methacrylate and 0.2g of azobisisoheptanonitrile, they were added dropwise to castor oil within 2 hours; After the addition is complete, keep stirring for 0.5h.

[0052] S2. Remove the gas and moisture in the four-necke...

Embodiment 3

[0056] The present embodiment provides a kind of castor oil base polyurethane elastomer, and the synthetic raw material of castor oil base polyurethane elastomer comprises castor oil composite material 100g, the diphenylmethane diisocyanate (MDI) 25g of liquefaction; Castor oil composite material uses castor oil, Acrylic monomers and epoxy compounds are used as raw materials.

[0057] The preparation method of above-mentioned castor oil-based polyurethane elastomer is as follows:

[0058] (1) preparation of castor oil composite material

[0059] S1. Add 40 g of castor oil into a four-necked flask with a stirring device, and raise the temperature to 120° C. After mixing 10g of ethyl methacrylate, 30g of butyl methacrylate, 30g of isobutyl acrylate, 50g of hydroxyethyl acrylate, 40g of methyl acrylate and 5g of azobisisobutyronitrile, they were added dropwise to castor within 8 hours. In sesame oil; after the dropwise addition is completed, keep stirring for 0.5h.

[0060] S2...

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Abstract

The invention discloses a castor-oil composite material, which is used for preparing a polyurethane elastomer, and is prepared from castor oil, an acrylate monomer and an epoxy compound. When the castor-oil composite material is used for synthesizing the polyurethane elastomer with isocyanate, through regulating active groups in a copolymerization product and an interactive relationship among groups, the polyurethane elastomer with good comprehensive mechanical performance of flexibility, hardness, tensile strength and the like can be synthesized. The invention discloses a castor oil based polyurethane elastomer, applies the castor-oil composite material, and has the flexibility and the hardness at the same time. The invention discloses a preparation method of the castor oil based polyurethane elastomer. The preparation method has a high synthesis rate; the performance of the elastomer can be regulated and controlled through selecting acrylate; a catalyst and a chain extender do not need to be used; meanwhile, a preparation system has low viscosity; a solvent does not need to be used, and the polyurethane elastomer which has low toxicity to a human body and is environmentally friendly can be synthesized, and is applicable to large-scale industrial popularization.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a castor oil composite material and a castor oil-based polyurethane elastomer prepared by using the castor oil composite material. Background technique [0002] Polyurethane elastomer (TPU), also known as polyurethane elastomer, is a polymer synthetic material containing more carbamate groups in the main chain. It is generally composed of macromolecules such as polyether, polyester and polyolefin. Polyol is formed by addition polymerization with polyisocyanate and diol or diamine chain extender step by step. Its structure includes a hard segment and a soft segment connected by urethane. The soft segment endows the material with the characteristics of being easy to be stretched and retracted. The hard segment has crystallinity, which makes the material have good resilience and strength. This system of coexistence of soft and hard segments makes the tensile e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/28C08G18/48C08G18/62
CPCC08G18/4891C08G18/6229C08G65/2609
Inventor 郭彦彬关永坚李玉博
Owner JIAHUA CHEM MAOMING
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