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A flame-retardant and aging-resistant plastic shell

A plastic shell, aging-resistant technology, applied in the field of plastic shells, can solve the problems of poor impact resistance of PVC, lack of flame retardancy and aging resistance, etc.

Active Publication Date: 2020-10-23
东莞市立晶塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the impact resistance of PVC is poor, and the flame retardancy and aging resistance are also lacking.

Method used

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  • A flame-retardant and aging-resistant plastic shell
  • A flame-retardant and aging-resistant plastic shell
  • A flame-retardant and aging-resistant plastic shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A flame-retardant and aging-resistant plastic shell, comprising the following raw materials in parts by weight:

[0028]

[0029] Wherein, the preparation method of described toughening agent comprises the steps:

[0030] (1) alcoholysis: get castor oil and glycerin and carry out alcoholysis reaction under the catalysis of catalyzer, temperature of reaction is 210 ℃, and the reaction time is 2h, obtains alcoholysis castor oil, and the weight ratio of described castor oil, glycerin and catalyzer is 500:100:2 ratio composition;

[0031] (2) Modification: Take 2,4-diisocyanate toluene and dissolve it in N,N-dimethylacetamide, add nano silicon dioxide and stir and mix to obtain an isocyanate solution, the 2,4-diisocyanate The weight ratio of cresyl isocyanate, nano silicon dioxide and N,N-dimethylacetamide is 6:1.5:10;

[0032] (3) Polyurethane synthesis: the alcoholyzed castor oil is added to the isocyanate solution to react, the reaction temperature is 60°C, and the ...

Embodiment 2

[0043] A flame-retardant and aging-resistant plastic shell, comprising the following raw materials in parts by weight:

[0044]

[0045] Wherein, the preparation method of described toughening agent comprises the steps:

[0046] (1) alcoholysis: get castor oil and glycerol to carry out alcoholysis reaction under the catalysis of catalyzer, reaction temperature is 200 ℃, and reaction time is 1.5h, obtains alcoholylated castor oil, the weight ratio of described castor oil, glycerol and catalyzer Composed of a ratio of 500:80:1;

[0047] (2) Modification: Take 2,4-diisocyanate toluene and dissolve it in N,N-dimethylacetamide, add nano silicon dioxide and stir and mix to obtain an isocyanate solution, the 2,4-diisocyanate The weight ratio of cresyl isocyanate, nano silicon dioxide and N,N-dimethylacetamide is 5:1:10;

[0048] (3) Polyurethane synthesis: the alcoholyzed castor oil is added to the isocyanate solution to react, the reaction temperature is 50°C, and the reaction ...

Embodiment 3

[0059] A flame-retardant and aging-resistant plastic shell, comprising the following raw materials in parts by weight:

[0060]

[0061]

[0062] Wherein, the preparation method of described toughening agent comprises the steps:

[0063] (1) alcoholysis: get castor oil and glycerin to carry out alcoholysis reaction under the catalysis of catalyzer, reaction temperature is 220 ℃, and reaction time is 2.5h, obtains alcoholylated castor oil, the weight ratio of described castor oil, glycerol and catalyzer Composed of a ratio of 500:120:3;

[0064] (2) Modification: Take 2,4-diisocyanate toluene and dissolve it in N,N-dimethylacetamide, add nano silicon dioxide and stir and mix to obtain an isocyanate solution, the 2,4-diisocyanate The weight ratio of cresyl isocyanate, nano silicon dioxide and N,N-dimethylacetamide is 7:2:10;

[0065] (3) Polyurethane synthesis: the alcoholyzed castor oil is added to the isocyanate solution to react, the reaction temperature is 70°C, and ...

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Abstract

The invention relates to the technical field of plastic shells, and specifically relates to a flame retardant anti-aging plastic shell, which comprises following raw materials: PVC, a plasticizer, a heat stabilizer, a flame retardant, a flexibilizer, an antioxidant, and a lubricant; wherein the flexibilizer is mainly prepared from castor oil, 2,4-toluene diisocyanate, and nano silicon dioxide. Byadding the flame retardant, heat stabilizer, and antioxidant into PVC, the PVC composite material has a good flame retardant property and anti-aging performance; in order to improve the impact resistant performance of PVC, castor oil polyurethane is used to wrap nano silicon dioxide to prepare the flexibilizer, by wrapping nano silicon dioxide, nano silicon dioxide can be better dispersed in PVC,the toughening effect is good; at the same time, castor oil polyurethane has good elasticity; the toughness of PVC is enhanced by the flexibilizer through two radically different principles: elastomertoughening and rigidness toughening; and the PVC has an excellent impact resistant performance and can be used to prepare a plug shell.

Description

technical field [0001] The invention relates to the technical field of plastic shells, in particular to a flame-retardant and aging-resistant plastic shell. Background technique [0002] The plug is a key part of the power cord to connect strong electricity, so its performance directly affects the safe use. The power cord plug is prone to heat during work in high-power situations, or sparks when it is loaded with instantaneous high voltage. These heat or Sparks may become the origin of fire and cause combustion, which must be paid attention to. [0003] Polyvinyl chloride (PVC) is widely used in injection molding various power cord plugs because of its good physical and mechanical properties, superior electrical insulation, simple injection molding process, and low price. The PVC material used for plug materials is mainly composed of PVC resin, Plasticizer, heat stabilizer, flame retardant, impact modifier, etc. [0004] However, the impact resistance of PVC is poor, and i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L23/06C08K13/06C08K9/10C08K3/36C08K3/32C08K5/523C08K3/22C08K5/12C08K5/11
Inventor 高天平
Owner 东莞市立晶塑胶有限公司
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