Summary of the invention
The object of the invention is at mould molding temperature (generally more than 80 ℃, common is 100 ℃~120 ℃) and can not produce obstruction or bonding, the streamline that the thermoplastic resin that molding shrinkage is low is made anti-stick roller bearing.
The present invention is achieved by the following technical solutions:
Described streamline anti-stick roller bearing, comprises the tack coat at inside and outside two-layer and middle part, and internal layer and skin comprise respectively following component, first: vinyl-α, β-unrighted acid and α, the EVA of β-unsaturated fatty acid ester, 60~90 parts; Second portion: with alhpa olefin, glycidyl acrylate, 1~5 part of the terpolymers that ethene acid esters is monomer; Third part: 15~30 parts of polyethylene.
Further, the vinyl-α in described first, β-unrighted acid proportion is 10%~15%.
Further, vinyl-the α of described first, β-unrighted acid or α, α described in β-unsaturated fatty acid ester, β-unrighted acid is that carbon chain lengths is at the aliphatic acid of 3~7 carbon atoms, the ester carbon chain lengths of its formation is 5~12 carbon atoms, and the degree of polymerization is controlled between 200~500.
Further, each free carbon chain length in described second portion is controlled at 3~7 carbon atoms, and after it forms ester, carbon chain lengths is at 5~12, and the degree of polymerization is controlled between 200~500.
Further, the polyolefin in described third part is the homopolymers of Atactic Polypropylene, propylene and one or more the mixture in LLDPE, and carbon chain lengths is at 3~7 carbon atoms; The degree of polymerization is controlled between 100~200.
Beneficial effect of the present invention illustrates with embodiment testing result in the lump in specific embodiment part.
The specific embodiment
Below in conjunction with the specific embodiment, the present invention is further elaborated:
Umber described in this part unless otherwise indicated, all refers to mass fraction.
The present invention includes following component:
First: vinyl-α, β-unrighted acid and α, the EVA of β-unsaturated fatty acid ester, 60~90 parts; Second portion: with alhpa olefin, glycidyl acrylate, 1~5 part of the terpolymers that ethene acid esters is monomer; Third part: 15~30 parts of polyethylene.
Vinyl-α in described first, β-unrighted acid proportion is 10%~15%.
Vinyl-the α of described first, β-unrighted acid or α, the α described in β-unsaturated fatty acid ester, β-unrighted acid is that carbon chain lengths is at the aliphatic acid of 3~7 carbon atoms.As acrylic acid, methacrylic acid, crotonic acid, maleic acid, anhydrous itaconic acid, while selecting sour under this length of carbochain, product pliability is better, after its formation ester, carbon chain lengths is good at 5~12, esterification selects other acid or alcohol as propionic acid, butyric acid, propyl alcohol, butanols etc., the length of coordinated carbochain; The degree of polymerization is controlled at 200~500 for good.
Each free carbon chain length in described second portion is controlled at 3~7 carbon atoms, and it forms after ester carbon chain lengths and selects other acid or propionic acid, butyric acid, propyl alcohol, butanols etc. for alcohol, the length of coordinated carbochain at 5~12 for good esterification; The degree of polymerization is controlled at 200~500 for good.
Polyolefin in described third part is the homopolymers of Atactic Polypropylene, propylene and one or more the mixture in LLDPE, and carbon chain lengths is at 3~7 carbon atoms; The degree of polymerization is controlled at 100~200 for good.
Manufacture method of the present invention is as follows:
Second portion and the even Hou Zaiyu of third part melting mixing first are mixed.
Moulding can obtain formed body of the present invention in the manner described above, and it can be used as skin material and uses, and inner side is attached with adhesive sticker and is combined with the article that need protection, and outside, as protective layer, can be simple layer, can be also composite bed.
Above-mentioned formed body can also be made multilayer material, and its main application is composite industrial sheet material, prevents from producing bonding with other metals that contact or glass equipment or element etc. under hot environment.Middle part sticks with glue knot, and positive and negative preferably adopts the resin-formed body of different material, in case result of use of certain one side can be changed with another side when bad.
The present invention also can be used as equipment component as bearing etc., but because the lower heavy duty industrial that is not suitable for of the strength of materials, its main purpose is still to prevent bonding, for example, can be used as the conveyer belt of streamline or the surfacing of roller bearing, and it is difficult for producing with the article of surface transport and bonds.
Embodiment 1
First: the EVA of vinylacrylic acid and crotonic acid, 60 parts; Second portion: with alhpa olefin, glycidyl acrylate, 1 part of the terpolymers that ethene acid esters is monomer; Third part: 30 parts of polyethylene.Vinyl-α in described first, β-unrighted acid proportion is 15%, the degree of polymerization, between 400~500, all selects butanols or acetic acid to coordinate corresponding acid or alcohol during lipid esterification used.When described second portion is selected alpha-butylene, glycidyl acrylate, ethene acid esters, select butanols to coordinate esterification, the degree of polymerization is between 400~500.Polyolefin in described third part is the homopolymers of propylene, and average carbon number is at 4.4 carbon atoms; The degree of polymerization is controlled between 100~200.
Above-mentioned product can not soften under 120 degree, during moulding, does not shrink, and all can not produce bonding phenomenon with glass or metal die or equipment, thereby can not produce bonding and block.
Embodiment 2
First: the EVA of methacrylic acid and itaconic acid, 90 parts; Second portion: with alhpa olefin, glycidyl acrylate, 1 part of the terpolymers that ethene acid esters is monomer; Third part: 15 parts of polyethylene.Vinyl-α in described first, β-unrighted acid proportion is 10%, the degree of polymerization, between 200~300, all selects butanols or acetic acid to coordinate corresponding acid or alcohol during lipid esterification used.When described second portion is selected alpha-butylene, glycidyl acrylate, ethene acid esters, select ethanol to coordinate esterification, the degree of polymerization is between 200~300.Polyolefin in described third part is LLDPE, and average carbon number is at 4.7 carbon atoms; The degree of polymerization is controlled between 100~200.
Above-mentioned product can not soften under 120 degree, during moulding, does not shrink, and all can not produce bonding phenomenon with glass or metal die or equipment, thereby can not produce bonding and block.
Embodiment 3
First: the EVA of methacrylic acid and maleic acid, 70 parts; Second portion: with alhpa olefin, glycidyl acrylate, 2 parts of the terpolymers that ethene acid esters is monomer; Third part: 20 parts of polyethylene.Vinyl-α in described first, β-unrighted acid proportion is 12%, the degree of polymerization, between 200~300, all selects butanols or butyric acid to coordinate corresponding acid or alcohol during lipid esterification used.When described second portion is selected alpha-butylene, glycidyl acrylate, ethene acid esters, select ethanol to coordinate esterification, the degree of polymerization is between 300~400.Polyolefin in described third part is Atactic Polypropylene, and average carbon number is at 4.2 carbon atoms; The degree of polymerization is controlled between 100~200.
Above-mentioned product can not soften under 120 degree, during moulding, does not shrink, and all can not produce bonding phenomenon with glass or metal die or equipment, thereby can not produce bonding and block.
Embodiment 4
First: the EVA of crotonic acid and maleic acid, 80 parts; Second portion: with alhpa olefin, glycidyl acrylate, 4 parts of the terpolymers that ethene acid esters is monomer; Third part: 25 parts of polyethylene.Vinyl-α in described first, β-unrighted acid proportion is 15%, the degree of polymerization, between 200~300, all selects butanols or butyric acid to coordinate corresponding acid or alcohol during lipid esterification used.When described second portion is selected alpha-butylene, glycidyl acrylate, ethene acid esters, select ethanol to coordinate esterification, the degree of polymerization is between 400~500.Polyolefin in described third part is the homopolymers of propylene and the mixture of LLDPE, and mixed proportion is 1 to 3, and average carbon number is at 4.2 carbon atoms; The degree of polymerization is controlled between 100~200.
Above-mentioned product can not soften under 120 degree, during moulding, does not shrink, and all can not produce bonding phenomenon with glass or metal die or equipment, thereby can not produce bonding and block.
Embodiment 5
First: the EVA of crotonic acid and itaconic acid, 65 parts; Second portion: with alhpa olefin, glycidyl acrylate, 3 parts of the terpolymers that ethene acid esters is monomer; Third part: 25 parts of polyethylene.Vinyl-α in described first, β-unrighted acid proportion is 13%, the degree of polymerization, between 200~300, all selects butanols or butyric acid to coordinate corresponding acid or alcohol during lipid esterification used.When described second portion is selected alpha-butylene, glycidyl acrylate, ethene acid esters, select ethanol to coordinate esterification, the degree of polymerization is between 400~500.The mixture of the Atactic Polypropylene in described third part, the homopolymers of propylene, LLDPE, mixed proportion is 1 to 3 to 3, average carbon number is at 4.2 carbon atoms; The degree of polymerization is controlled between 100~200.
Above-mentioned product can not soften under 120 degree, during moulding, does not shrink, and all can not produce bonding phenomenon with glass or metal die or equipment, thereby can not produce bonding and block.
The detailed description of this patent being made according to above description; its object is to be convenient to application mode and the scope that those skilled in the art better understand this patent; can not be interpreted as limitation of the present invention; general knowledge in conjunction with above content and this area; under the prerequisite of aim that does not depart from this patent, the alternative that is equal to that those skilled in the art make the technical scheme of recording in this patent document still falls into protection scope of the present invention.