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Halogen-free flame-proof phenolic plastic

A phenolic molding compound and phenolic resin technology, applied in the field of halogen-free flame-retardant phenolic molding compound, can solve the problems of toxic gas, harm to health, damage to the environment, etc., and achieve the effect of ensuring human safety and protecting the environment

Inactive Publication Date: 2009-01-14
常熟东南塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the flame retardancy of phenolic molding compounds can be improved by adding halogen-containing flame retardants, halogen-containing flame retardants will produce a large amount of toxic and corrosive gases during combustion, which will endanger people's health and damage the environment.

Method used

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  • Halogen-free flame-proof phenolic plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Phenolic resin (refers to 40.5 parts obtained by acid production; novolac resin)

[0025] 8.8 parts of hexa(methylene)tetramine;

[0026] 1.2 parts of calcium oxide;

[0027] Zinc stearate 1.6 parts;

[0028] 6.2 parts of polyphosphate amine;

[0029] 1.6 parts of zinc borate;

[0030] 45 parts of calcium carbonate;

[0031] 20 parts of glass fiber;

[0032] During specific implementation, at first above-mentioned novolac resin obtained by the acid method is pulverized in a grinder to obtain a powdery resin, then accurately weigh the above-mentioned other components and mix with the powdery resin to obtain a uniform powder, and then knead the uniform powder on a double-roller machine at a mixing temperature of 90-110°C. After 6-7 minutes, the mixed material is pressed into flakes and cooled to room temperature, and then the cooled flakes are crushed into 1 ~ 2mm particles, to obtain the halogen-free flame retardant phenolic molding compound.

Embodiment 2

[0034] Phenolic resin (refers to 42.2 parts obtained by acid production; novolac resin)

[0035] 7.2 parts of hexa(methylene)tetramine;

[0036] 1.4 parts of magnesium oxide;

[0037] 0.1 part of bis stearic acid amide;

[0038] 0.5 parts of magnesium stearate;

[0039] Zinc stearate 1.2 parts;

[0040] 4.9 parts of melamine phosphate;

[0041] 1.8 parts of antimony trioxide;

[0042] 45 parts of aluminum hydroxide;

[0043] 22 parts of glass fiber;

[0044] 2 parts of titanium dioxide;

[0045] Titanium cyanide green 0.3 parts.

[0046] During specific implementation, first the above-mentioned novolac resin produced by the acid method is pulverized in a grinder to obtain a powdery resin, then accurately weigh the above-mentioned other components and mix with the powdery resin to obtain a uniform powder , and then knead the uniform powder on a two-roller machine at a mixing temperature of 90-110°C. After 6-7 minutes, the mixed material is pressed into flakes and coole...

Embodiment 3

[0048] Phenolic resin (refers to 43.5 parts obtained by acid production; novolac resin)

[0049] Hexa(methylene)tetramine 6.3 parts;

[0050] 1.8 parts of zinc oxide;

[0051] 0.1 part of bis stearic acid amide;

[0052] 0.7 parts of calcium stearate;

[0053] Zinc stearate 1.5 parts;

[0054] 5.8 parts of melamine cyanurate;

[0055] 2.7 parts of antimony trioxide;

[0056] 15 parts of mica powder;

[0057] 32 parts of aluminum hydroxide;

[0058] 23 parts of glass fiber;

[0059] Everlasting Red 0.5 parts.

[0060] During specific implementation, the above-mentioned novolak resin produced by the acid method is first pulverized in a grinder to obtain a powdery resin, and then the above-mentioned other components are accurately weighed and mixed with the powdery resin to obtain a uniformly mixed powder Then mix the uniform powder on a double-roller machine at a mixing temperature of 90-110°C. After 6-7 minutes, the mixed material is pressed into flakes and cooled to r...

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Abstract

The invention relates to non-halogen flame-resistant phenolic molding compound. According to the weight parts, the raw material of the non-halogen flame-resistant phenolic molding compound comprises 40 parts to 45 parts of phenolic resin, 4 parts to 9 parts of curing agent, 1.1 parts to 2.3 parts of curing accelerator, 1.5 parts to 3 parts of mould releasing agent, 4.8 parts to 6.3 parts of phosphate, 1.5 parts to 2.8 parts of metal oxide, 45 parts to 50 parts of mineral filler and 20 parts to 25 parts of reinforcing fiber. The non-halogen flame-resistant phenolic molding compound has the advantages that because halogen is not contained in the formulation, when being burnt, noxious gas and corrosive gas can not be generated, thus the physical safety and the environmental protection can be ensured; the flame-resistant performance can reach grade UL-94-V-0 (0.45 mm), the insulation resistance is greater than or equal to 1X10<12> Omega; the bending strength is more than (MPa) 85; the thermal deformation temperature is higher than or equal to 240 DEG C.

Description

technical field [0001] The invention belongs to the technical field of thermosetting molding compounds, in particular to a halogen-free flame-retardant phenolic molding compound. Background technique [0002] Phenolic molding compound is a granular or powder composite material that can be processed easily by adding necessary auxiliary components (such as curing agent, mineral filler, reinforcing fiber, etc.) with phenolic resin and fully masticated. Because phenolic molding compound has many advantages such as good heat resistance, high strength, convenient molding and low price, it has become one of the most widely used and most used thermosetting plastics. In recent years, with the development of electrical and electronic components towards increasingly smaller and thinner, the requirements for flame retardancy of phenolic molding compounds used in such components are getting higher and higher. Although the flame retardancy of phenolic molding compounds can be improved by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/06C08K13/04C08K3/32C08K5/3492C08K5/52C08K3/22C08K3/38C08J5/04
Inventor 张文军王康建王伟江朱叶刚唐轶雯魏卫王可强
Owner 常熟东南塑料有限公司
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