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Lignin-modified phenolic molding compound and its preparation method

A technology of phenolic molding compound and lignin is applied in the field of preparation of lignin in thermoplastic phenolic resin and phenolic molding compound, which can solve the problems of seldom reporting, and achieve the effects of high production efficiency, widening of raw material sources and low cost.

Active Publication Date: 2016-09-07
徐州市洛克尔化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The research on the application of lignin in phenolic resins, most of which are applied in wood adhesives, but rarely reported in the application of lignin in thermoplastic phenolic resins

Method used

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  • Lignin-modified phenolic molding compound and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Preparation of thermoplastic phenolic resin modified by enzymatic hydrolysis of lignin

[0022] Add 100 grams of phenol, enzymatic lignin (30% of phenol mass) and hydrochloric acid (5% of phenol mass) into the reactor, the reaction temperature is 95°C, and the reaction time is 2h, then add formaldehyde (phenol-formaldehyde molar ratio is 1:0.85 ), the reaction temperature is 90°C-110°C, the reaction time is 2h, the moisture and remaining phenol are removed under normal pressure and then under reduced pressure, and the enzymatic lignin modified phenolic resin is obtained. Ordinary thermoplastic phenolic resins are prepared in the same way.

[0023] Preparation of enzymatically hydrolyzed lignin-based phenolic molding compound

[0024] The above enzymatic lignin modified thermoplastic phenolic resin is blended with ordinary thermoplastic phenolic resin at 20%, 40%, 60%, 80%, 100%, and other additives such as curing agent, filler, mold release agent and pigment are blende...

Embodiment 2

[0026] Preparation of Hydrolyzed Lignin Modified Thermoplastic Phenolic Resin

[0027] Add 100 grams of phenol, hydrolyzed lignin (40% of phenol mass) and oxalic acid (5% of phenol mass) into the reactor, the reaction temperature is 100°C, and the reaction time is 1.5h, then add formaldehyde (phenol-formaldehyde molar ratio is 1:0.85 ), the reaction temperature is 90°C-110°C, the reaction time is 2.5h, and the moisture and remaining phenol are removed under normal pressure and then under reduced pressure to obtain a hydrolyzed lignin-modified phenolic resin. Ordinary thermoplastic phenolic resins are prepared in the same way.

[0028] Preparation of hydrolyzed lignin-based phenolic molding compound

[0029] Blend the above-mentioned hydrolyzed lignin modified thermoplastic phenolic resin with ordinary thermoplastic phenolic resin at 20%, 40%, 60%, 80%, 100%, and blend with other additives such as curing agent, filler, mold release agent and pigment Uniform, the specific form...

Embodiment 3

[0031] Preparation of Alkali Lignin Modified Thermoplastic Phenolic Resin

[0032]Add 100 grams of phenol, alkali lignin (50% of phenol mass) and hydrochloric acid (6% of phenol mass) into the reactor, the reaction temperature is 98°C, the reaction time is 2.5h, then add formaldehyde (phenol-formaldehyde molar ratio is 1:0.85 ), the reaction temperature is 95°C-110°C, the reaction time is 4h, and the moisture and remaining phenol are removed under normal pressure and then under reduced pressure to obtain alkali lignin modified phenolic resin. Ordinary thermoplastic phenolic resins are prepared in the same way.

[0033] Preparation of Alkali Lignin Based Phenolic Molding Compound

[0034] Blend the above alkali lignin modified thermoplastic phenolic resin with ordinary thermoplastic phenolic resin at 20%, 40%, 60%, 80%, 100%, and blend with other additives such as curing agent, filler, mold release agent and pigment Uniform, the specific formula is 137 parts of lignin phenoli...

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Abstract

The invention discloses lignin-modified phenolic molding plastic and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing lignin-modified thermoplastic phenolic resin with a curing agent, a filler, a demolding agent, pigments and other aids, and performing semi-curing treatment on an open type plastic mixing mill, thereby obtaining a flaky brittle product with good glossiness; and grinding, and screening by virtue of a 200mesh sieve, thereby obtaining the molding plastic. According to the lignin-based phenolic molding plastic product, the bending strength is more than or equal to 70MPa, the notch impact strength is more than or equal to 1.3kJ / m<2>, the non-notched impact strength is more than or equal to 4kJ / m<2>, and the heat deflection temperature is more than or equal to 140 DEG C.

Description

technical field [0001] The invention relates to a lignin-modified phenolic molding compound and a preparation method thereof, in particular to a preparation method of lignin produced in the biofuel industry in a thermoplastic phenolic resin and a phenolic molding compound thereof. Background technique [0002] Phenolic molding compound is a material with excellent heat resistance and good cost performance, and its main component is phenolic resin. Phenolic resin is formed by polycondensation of phenolic compounds and aldehyde compounds under the action of a catalyst. Due to its low price, heat resistance, ablation resistance, flame retardancy, and less combustion smoke, it is widely used in adhesives, coatings, and molding compounds. , laminated plastics, foamed plastics, and ion exchange resins. The production and use of phenolic resin will consume a large amount of petrochemical products, and bring a certain degree of pollution to the environment, affecting the entire eco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/14C08L61/06C08L97/02C08K13/02C08K3/22C08K3/34C08G8/28
Inventor 周永红贾普友胡立红周静薄采颖
Owner 徐州市洛克尔化工科技有限公司