阅读说明：本技术 一种二醋酸纤维素-聚酰胺复合材料及其制备方法 (A kind of cellulose diacetate-polyamide compoiste material and preparation method thereof ) 是由 张宁 潘书刚 滕业方 于 2018-05-21 设计创作，主要内容包括：本发明公开了一种二醋酸纤维素-聚酰胺复合材料及其制备方法,包括如下质量份含量的各组份：二醋酸纤维素100份；低分子量聚酰胺树脂多元醇5-30份；超支化聚酰胺30-100份；抗氧剂0.5-2份。解决了普通增塑剂改性二醋酸纤维素导致的拉伸强度下降与耐久性差的问题,制备一种高性能二醋酸纤维素-聚酰胺复合材料,此复合材料具有良好的透明性与耐久性、优异的加工性能、更高的拉伸强度与冲击强度。(The invention discloses a kind of cellulose diacetate-polyamide compoiste material and preparation method thereof, each component including following mass parts content: 100 parts of cellulose diacetate；5-30 parts of low-molecular-weight polyamide resin polyalcohol；30-100 parts of ultrabranching polyamide；0.5-2 parts of antioxidant.Solve the problems, such as that tensile strength decline caused by the modified cellulose diacetate of conventional plasticizers and durability are poor, a kind of high-performance cellulose diacetate-polyamide compoiste material is prepared, this composite material has the good transparency and durability, excellent processing performance, higher tensile strength and impact strength.)

1. a kind of cellulose diacetate-polyamide compoiste material and preparation method thereof, it is characterised in that: cellulose diacetate 100 Part；5-30 parts of low-molecular-weight polyamide resin polyalcohol；30-100 parts of ultrabranching polyamide；0.5-2 parts of antioxidant.

2. low-molecular-weight polyamide resin polyalcohol according to claim 1, it is characterised in that: melt index range is 50-200g/10min, 120-180 DEG C of melting temperature.

3. ultrabranching polyamide according to claim 1 it is characterized by: melt index range be 30-100g/10min, 150-190 DEG C of melting temperature.

4. antioxidant according to claim 1 be β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester, Bis- (2,4-DTBP) pentaerythritol diphosphites, propionic acid n-octadecyl alcohol ester two or more.

5. preparation method according to claim 1, it is characterised in that: step 1 weighs each raw material, two vinegar by set dosage 100 parts of acid cellulose；5-30 parts of low-molecular-weight polyamide resin polyalcohol；30-100 parts of ultrabranching polyamide；Antioxidant 0.5-2 Part；Weighed cellulose diacetate is placed in high-speed mixer with antioxidant after mixing 5-10min by step 2, then successively plus Enter low-molecular-weight polyamide resin polyalcohol and ultrabranching polyamide mixing 10-15min, discharges spare；Step 3, it is mixed Material is in double screw extruder extruding pelletization, and 170-195 DEG C of extrusion temperature.

Technical field

The present invention relates to cellulose diacetate field of compound material, more particularly to one kind to have excellent machinability and machinery Cellulose diacetate-polyamide compoiste material of comprehensive performance and preparation method thereof.

Background technique

Contain great amount of hydroxy group, acetyl group isopolarity group on cellulose diacetate strand, cause molecule chain rigidity larger, Interchain interaction power is larger, leads to that cellulose diacetate processing temperature is high, processing fluidity is poor, process is easily divided Solution, therefore the processing performance for improving cellulose diacetate one of has been a hot spot of research, the current most common method is to pass through It adds plasticizer and reduces the active force of cellulose diacetate molecule interchain, and then improve its processing performance, wherein most important increasing Moulding agent includes: phthalic acid ester (repefral, diethyl phthalate, dibutyl phthalate, adjacent benzene Dioctyl phthalate butyl benzyl), trimellitate (trimethyl trimellitate, triethyl trimellitate and tributyl trimellitate), positive phosphorus Acid esters (triphenyl phosphate, tricresyl phosphate, ethylhexyl diphenyl phosphate, isodecyl diphenyl phosphate), citric acid Ester (triethyl citrate, CitroflexA-2, citroflex A-4), benzoic ether (diethylene glycol (DEG) hexichol first Acid esters, dipropylene glycol dibenzoate), adipate ester (dimethyl adipate), tartrate, oleate, sebacate, nonyl Two acid esters, ricinoleate ester, glyceride.The addition of plasticizer as above can effectively improve the processability of cellulose diacetate Can, but lead to its tensile strength degradation simultaneously, and plasticizer can be constantly from diacetate fiber internal migration to table Face causes cellulose diacetate performance unstable, as the time constantly changes.

Polyamide is to obtain polymer through high temperature polycondensation by binary acid, diamine, lactams or amino acid, is had excellent Different processing performance and mechanical performance.Due to the presence of amide groups, amino and carboxyl a large amount of in polyamide molecule structure, with two Acetate fiber has good compatibility, and the hydroxyl on the carboxyl and diacetate fiber on polyamide can be formed at high temperature Ester group has the requirement for preparing high-performance composite materials, and polyamide is high polymer, and strand is big, will not be from diacetate fiber It is migrated in element, there is excellent endurance quality.

Technical problem solved by the invention is to stretch caused by solving the modified cellulose diacetate of conventional plasticizers The problem of intensity decline and durability difference, prepares a kind of high-performance cellulose diacetate-polyamide compoiste material, this composite material With good processing performance, higher tensile strength and impact strength are had concurrently, and there is excellent durability.

Summary of the invention

In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a kind of cellulose diacetate-polyamide composite woods Material and preparation method thereof, solve the problems of conventional method (the modified cellulose diacetate of addition plasticizer): plasticizer is waved Processing site smell caused by sending out is big, the properties of product durability of preparation is poor, tensile strength is low.Prepare a kind of NEW TYPE OF COMPOSITE material Material has good processing performance, higher tensile strength and impact strength, excellent durability.

The technical scheme adopted by the invention is that: a kind of cellulose diacetate-polyamide compoiste material and preparation method thereof, Each component including following mass parts content: 100 parts of cellulose diacetate；5-30 parts of low-molecular-weight polyamide resin polyalcohol； 30-100 parts of ultrabranching polyamide；0.5-2 parts of antioxidant.

Preferably, the low-molecular-weight polyamide resin polyalcohol melt index range is 50-200g/10min, melting temperature 120-180 DEG C of degree.

Preferably, the ultrabranching polyamide melt index range be 30-100g/10min, 150-190 DEG C of melting temperature

Preferably, the antioxidant is β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester, bis- (2,4- bis- Tert-butyl phenol) pentaerythritol diphosphites, propionic acid n-octadecyl alcohol ester two or more.

Include the following steps:

(1) each raw material is weighed by set dosage, 100 parts of cellulose diacetate；5-30 parts of low-molecular-weight polyamide resin polyalcohol； 30-100 parts of ultrabranching polyamide；0.5-2 parts of antioxidant；

(2) weighed cellulose diacetate is placed in high-speed mixer after mixing 5-10min with antioxidant, is sequentially added low Molecular weight polyamide resinous polyol and ultrabranching polyamide mixing 10-15min discharge spare；

(3) by step (2) mixed material in double screw extruder extruding pelletization, 170-195 DEG C of extrusion temperature.

Compared with prior art, the beneficial effects of the invention are as follows cellulose diacetate-polyamide prepared by the present invention is compound Material has the good transparency and durability, excellent processing performance, higher tensile strength and impact strength, can be used as height Quality transparent material is applied to the fields such as automobile, electronic apparatus, spectacle-frame.

Specific embodiment

Embodiments of the present invention are relatively simple, if as described above formula described in book and preparation method thereof the step of Step-by-step operation is carried out, the present invention just can be preferably implemented.Four embodiments are set forth below, preparation method is completely as described above Book operation.Still there are many specific embodiment, all skills formed using equivalent replacement or equivalent transformation by the present invention Art scheme, all falls within the scope of protection of present invention.