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Rigid foam plastic and preparation method thereof

A technology for rigid foam plastics and raw materials, applied in the field of packaging materials, can solve the problems of low tensile strength and low compressive strength, and achieve the effects of simple raw materials, easy availability of raw materials, and simple preparation methods

Inactive Publication Date: 2019-03-22
嘉兴市竹林塑料泡沫有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a rigid foam with high compressive strength, high tensile strength, high elongation and high tear strength and a preparation method thereof, which solves technical problems such as low compressive strength and low tensile strength of existing packaging materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1: Weigh 100 parts of polymethylene polyphenylisocyanate, 10 parts of polydimethylsiloxane, 60 parts of polyether, 0.1 part of catalyst, 4 parts of triethylenediamine, TCEP 40 parts, 2 parts of distilled water, 5 parts of fluorodichloroethane, 1 part of dimethylcyclohexylamine, and 0.5 parts of hexahydrotriazine.

[0025] Step 2: Put all raw materials into a high-speed mixer and mix evenly. The temperature of the mixer is 20°C, the mixing speed is 1000r / min, and the mixture is mixed for 10s.

[0026] The third step: put the mixed material into the mold, the mold temperature is 40°C, the curing temperature is 90°C, and rises for 110s.

[0027] Product density is 0.034g / cm3, tensile strength is 250MPa, compression deformation is 5.5%; compressive strength is 240MPa, thermal conductivity is 0.02W / (m K); product bonding strength is 310MPa, raw materials are easy to obtain, preparation method is simple, elongation Rate 140%.

Embodiment 2

[0029] Step 1: Weigh 100 parts of polymethylene polyphenylisocyanate, 20 parts of polydimethylsiloxane, 70 parts of polyether, 0.5 parts of catalyst, 8 parts of triethylenediamine, TCEP 60 parts of distilled water, 25 parts of fluorodichloroethane, 5 parts of dimethylcyclohexylamine, and 4.5 parts of hexahydrotriazine.

[0030] Step 2: Put all the raw materials into a high-speed mixer and mix evenly. The temperature of the mixer is 30°C, the mixing speed is 1400r / min, and the mixing is 20s.

[0031] Step 3: The mixed material is put into the mold, the mold temperature is 45°C, the curing temperature is 100°C, and rises for 130s.

[0032] Product density 0.035g / cm3, tensile strength 260MPa, compression deformation 5%; compressive strength 250MPa, thermal conductivity 0.021W / (m K); product bonding strength 320MPa, raw materials are simple and easy to obtain, simple preparation method, elongation Rate 150%.

Embodiment 3

[0034] Step 1: Weigh 100 parts of polymethylene polyphenylisocyanate, 10 parts of silicone oil, 65 parts of polyether, 0.2 parts of catalyst, 5 parts of triethylenediamine, 45 parts of TCEP, and 3 parts of distilled water according to the ratio of parts by mass. 10 parts of fluorodichloroethane, 2 parts of dimethylcyclohexylamine, and 1.5 parts of hexahydrotriazine.

[0035] Step 2: Put all raw materials into a high-speed mixer and mix evenly. The temperature of the mixer is 20°C, the mixing speed is 1000r / min, and the mixture is mixed for 10s.

[0036] The third step: put the mixed material into the mold, the mold temperature is 40°C, the curing temperature is 90°C, and rises for 110s.

[0037] Product density is 0.036g / cm3, tensile strength is 270MPa, compression deformation is 4.5%; compressive strength is 260MPa, thermal conductivity is 0.022W / (m K); product bonding strength is 330MPa, raw materials are easy to obtain, preparation method is simple, elongation Rate 160%. ...

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Abstract

The invention discloses a rigid foam plastic and a preparation method thereof. Raw materials are as follows: polymethylene polyphenyl isocyanate, an antifoaming agent, a polyether, a catalyst, triethylenediamine, tris(2-carboxyethyl)phosphine (TCEP), distilled water, monofluorodichloroethane, dimethylcyclohexylamine and hexahydrotriazine. A product has the density of 0.03-0.038 g / cm<3>, the tensile strength of 250-290MPa, the compression deformation of 3.5-5.5%, the compressive strength of 240-280MPa, the thermal conductivity of 0.02-0.024W / (m.K) and the bonding strength of 310-350MPa. The rawmaterials are simple and easy to obtain; the preparation method is simple; the elongation is 140-180%.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a rigid foamed plastic and a preparation method thereof. Background technique [0002] Packaging materials refer to the materials used to make packaging containers, packaging decoration, packaging printing, packaging and transportation to meet product packaging requirements, including metal, plastic, glass, ceramics, paper, bamboo, wild mushrooms, natural fibers, Main packaging materials such as chemical fibers and composite materials, as well as auxiliary materials such as strapping, decoration, and printing materials. [0003] Refers to the materials used to make packaging containers, packaging decoration, packaging printing, packaging and transportation to meet product packaging requirements, including metal, plastic, glass, ceramics, paper, bamboo, wild mushrooms, natural fibers, chemical fibers , composite materials and other main packaging materials, including ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/48C08J9/14
CPCC08G18/48C08J9/144C08J2203/142C08J2375/08
Inventor 周执
Owner 嘉兴市竹林塑料泡沫有限公司